diff --git a/Makefile b/Makefile
index 1848974..b2ee3f2 100644
--- a/Makefile
+++ b/Makefile
@@ -23,6 +23,7 @@ merge: sol-merger-check
     sol-merger --export-plugin SPDXLicenseRemovePlugin ./contracts/FeralfileArtworkV3.sol /tmp/sol-merger && \
     sol-merger --export-plugin SPDXLicenseRemovePlugin ./contracts/FeralfileArtworkV4_1.sol /tmp/sol-merger && \
 	sol-merger --export-plugin SPDXLicenseRemovePlugin ./contracts/FeralfileArtworkV4_2.sol /tmp/sol-merger && \
+	sol-merger --export-plugin SPDXLicenseRemovePlugin ./contracts/FeralfileArtworkV4_3.sol /tmp/sol-merger && \
 	sol-merger --export-plugin SPDXLicenseRemovePlugin ./contracts/FeralfileEnglishAuction.sol /tmp/sol-merger && \
 	sol-merger --export-plugin SPDXLicenseRemovePlugin ./contracts/FeralFileAirdropV1.sol /tmp/sol-merger && \
 	sol-merger --export-plugin SPDXLicenseRemovePlugin ./contracts/OwnerData.sol /tmp/sol-merger && \
@@ -45,6 +46,8 @@ build-contract: check
 	jq -r ".abi" build/contracts/FeralfileExhibitionV4_1.json > ./build/FeralfileExhibitionV4.abi && \
 	jq -r ".bytecode" build/contracts/FeralfileExhibitionV4_2.json > ./build/FeralfileExhibitionV4_2.bin && \
 	jq -r ".abi" build/contracts/FeralfileExhibitionV4_2.json > ./build/FeralfileExhibitionV4_2.abi && \
+	jq -r ".bytecode" build/contracts/FeralfileExhibitionV4_3.json > ./build/FeralfileExhibitionV4_3.bin && \
+	jq -r ".abi" build/contracts/FeralfileExhibitionV4_3.json > ./build/FeralfileExhibitionV4_3.abi && \
 	jq -r ".bytecode" build/contracts/FeralfileEnglishAuction.json > ./build/FeralfileEnglishAuction.bin && \
 	jq -r ".abi" build/contracts/FeralfileEnglishAuction.json > ./build/FeralfileEnglishAuction.abi && \
 	jq -r ".bytecode" build/contracts/FeralFileAirdropV1.json > ./build/FeralFileAirdropV1.bin && \
@@ -57,6 +60,7 @@ build: build-contract
 	mkdir -p ./go-binding/feralfile-exhibition-v3 && \
 	mkdir -p ./go-binding/feralfile-exhibition-v4 && \
 	mkdir -p ./go-binding/feralfile-exhibition-v4_2 && \
+	mkdir -p ./go-binding/feralfile-exhibition-v4_3 && \
 	mkdir -p ./go-binding/feralfile-english-auction && \
 	mkdir -p ./go-binding/feralfile-airdrop-v1 && \
 	mkdir -p ./go-binding/owner-data && \
@@ -64,6 +68,7 @@ build: build-contract
 	abigen --abi ./build/FeralfileExhibitionV3.abi --bin ./build/FeralfileExhibitionV3.bin --pkg feralfilev3 -type FeralfileExhibitionV3 --out ./go-binding/feralfile-exhibition-v3/abi.go
 	abigen --abi ./build/FeralfileExhibitionV4.abi --bin ./build/FeralfileExhibitionV4.bin --pkg feralfilev4 -type FeralfileExhibitionV4 --out ./go-binding/feralfile-exhibition-v4/abi.go
 	abigen --abi ./build/FeralfileExhibitionV4_2.abi --bin ./build/FeralfileExhibitionV4_2.bin --pkg feralfilev4_2 -type FeralfileExhibitionV4_2 --out ./go-binding/feralfile-exhibition-v4_2/abi.go
+	abigen --abi ./build/FeralfileExhibitionV4_3.abi --bin ./build/FeralfileExhibitionV4_3.bin --pkg feralfilev4_2 -type FeralfileExhibitionV4_3 --out ./go-binding/feralfile-exhibition-v4_3/abi.go
 	abigen --abi ./build/FeralfileEnglishAuction.abi --bin ./build/FeralfileEnglishAuction.bin --pkg english_auction -type FeralfileEnglishAuction --out ./go-binding/feralfile-english-auction/abi.go
 	abigen --abi ./build/FeralFileAirdropV1.abi --bin ./build/FeralFileAirdropV1.bin --pkg airdropv1 -type FeralFileAirdropV1 --out ./go-binding/feralfile-airdrop-v1/abi.go && \
 	abigen --abi ./build/OwnerData.abi --bin ./build/OwnerData.bin --pkg ownerdata -type OwnerData --out ./go-binding/owner-data/abi.go
diff --git a/contracts/FeralfileArtworkV4.sol b/contracts/FeralfileArtworkV4.sol
index 8b3f3cf..cdeb9a0 100644
--- a/contracts/FeralfileArtworkV4.sol
+++ b/contracts/FeralfileArtworkV4.sol
@@ -130,12 +130,11 @@ contract FeralfileExhibitionV4 is
 
         // initialize max supply map
         for (uint256 i = 0; i < seriesIds_.length; i++) {
-            // Check duplicate with others
-            for (uint256 j = i + 1; j < seriesIds_.length; j++) {
-                if (seriesIds_[i] == seriesIds_[j]) {
-                    revert("FeralfileExhibitionV4: duplicate seriesId");
-                }
-            }
+            require(
+                _seriesMaxSupplies[seriesIds_[i]] == 0,
+                "FeralfileExhibitionV4: duplicate seriesId"
+            );
+
             require(
                 seriesMaxSupplies_[i] > 0,
                 "FeralfileExhibitionV4: zero max supply"
diff --git a/contracts/FeralfileArtworkV4_3.sol b/contracts/FeralfileArtworkV4_3.sol
new file mode 100644
index 0000000..bab0144
--- /dev/null
+++ b/contracts/FeralfileArtworkV4_3.sol
@@ -0,0 +1,91 @@
+// SPDX-License-Identifier: MIT
+pragma solidity ^0.8.13;
+
+import {FeralfileExhibitionV4_1} from "./FeralfileArtworkV4_1.sol";
+
+contract FeralfileExhibitionV4_3 is FeralfileExhibitionV4_1 {
+    error InvalidOwner();
+    error TokenIsNonMergeable();
+    error InvalidLength();
+
+    struct MergeArtworkInfo {
+        uint256 singleSeriesId;
+        uint256 mergedSeriesId;
+        uint256 nextTokenId;
+    }
+    MergeArtworkInfo private mergeArtworkInfo;
+
+    constructor(
+        string memory name_,
+        string memory symbol_,
+        bool burnable_,
+        bool bridgeable_,
+        address signer_,
+        address vault_,
+        address costReceiver_,
+        string memory contractURI_,
+        uint256[] memory seriesIds_,
+        uint256[] memory seriesMaxSupplies_,
+        MergeArtworkInfo memory mergeArtworkInfo_
+    )
+        FeralfileExhibitionV4_1(
+            name_,
+            symbol_,
+            burnable_,
+            bridgeable_,
+            signer_,
+            vault_,
+            costReceiver_,
+            contractURI_,
+            seriesIds_,
+            seriesMaxSupplies_
+        )
+    {
+        mergeArtworkInfo = mergeArtworkInfo_;
+    }
+
+    /// @notice burns multiples mergeable artworks and mint a new artworks
+    /// @param tokenIds - list of tokenIds to be burned
+    function mergeArtworks(uint256[] calldata tokenIds) external {
+        if (tokenIds.length < 2) {
+            revert InvalidLength();
+        }
+
+        // Burn artworks
+        for (uint256 i = 0; i < tokenIds.length; i++) {
+            uint256 tokenId = tokenIds[i];
+            Artwork memory artwork = _allArtworks[tokenId];
+
+            if (
+                artwork.seriesId != mergeArtworkInfo.singleSeriesId &&
+                artwork.seriesId != mergeArtworkInfo.mergedSeriesId
+            ) {
+                revert TokenIsNonMergeable();
+            }
+
+            if (ownerOf(tokenId) != _msgSender()) {
+                revert InvalidOwner();
+            }
+
+            _burnArtwork(tokenId);
+        }
+
+        // Mint new artwork
+        uint256 newTokenId = mergeArtworkInfo.nextTokenId;
+        _mintArtwork(
+            mergeArtworkInfo.mergedSeriesId,
+            newTokenId,
+            _msgSender()
+        );
+        mergeArtworkInfo.nextTokenId++;
+
+        emit MergedArtwork(_msgSender(), tokenIds, newTokenId);
+    }
+
+    /// @notice Event emitted when a merged artwork has been minted
+    event MergedArtwork(
+        address indexed owner,
+        uint256[] mergingTokenIds,
+        uint256 indexed newTokenId
+    );
+}
diff --git a/go-binding/feralfile-exhibition-v4/abi.go b/go-binding/feralfile-exhibition-v4/abi.go
index 272703b..6f8e27b 100644
--- a/go-binding/feralfile-exhibition-v4/abi.go
+++ b/go-binding/feralfile-exhibition-v4/abi.go
@@ -62,7 +62,7 @@ type IFeralfileSaleDataSaleData struct {
 // FeralfileExhibitionV4MetaData contains all meta data concerning the FeralfileExhibitionV4 contract.
 var FeralfileExhibitionV4MetaData = &bind.MetaData{
 	ABI: "[{\"inputs\":[{\"internalType\":\"string\",\"name\":\"name_\",\"type\":\"string\"},{\"internalType\":\"string\",\"name\":\"symbol_\",\"type\":\"string\"},{\"internalType\":\"bool\",\"name\":\"burnable_\",\"type\":\"bool\"},{\"internalType\":\"bool\",\"name\":\"bridgeable_\",\"type\":\"bool\"},{\"internalType\":\"address\",\"name\":\"signer_\",\"type\":\"address\"},{\"internalType\":\"address\",\"name\":\"vault_\",\"type\":\"address\"},{\"internalType\":\"address\",\"name\":\"costReceiver_\",\"type\":\"address\"},{\"internalType\":\"string\",\"name\":\"contractURI_\",\"type\":\"string\"},{\"internalType\":\"uint256[]\",\"name\":\"seriesIds_\",\"type\":\"uint256[]\"},{\"internalType\":\"uint256[]\",\"name\":\"seriesMaxSupplies_\",\"type\":\"uint256[]\"}],\"stateMutability\":\"nonpayable\",\"type\":\"constructor\"},{\"inputs\":[],\"name\":\"AdvanceAddressAlreadyUsed\",\"type\":\"error\"},{\"inputs\":[],\"name\":\"InvalidAdvanceAddress\",\"type\":\"error\"},{\"inputs\":[],\"name\":\"InvalidAdvanceAddressesAndAmounts\",\"type\":\"error\"},{\"inputs\":[],\"name\":\"InvalidAdvanceAmount\",\"type\":\"error\"},{\"inputs\":[],\"name\":\"InvalidSignature\",\"type\":\"error\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"operator\",\"type\":\"address\"}],\"name\":\"OperatorNotAllowed\",\"type\":\"error\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"internalType\":\"address\",\"name\":\"owner\",\"type\":\"address\"},{\"indexed\":true,\"internalType\":\"address\",\"name\":\"approved\",\"type\":\"address\"},{\"indexed\":true,\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"}],\"name\":\"Approval\",\"type\":\"event\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"internalType\":\"address\",\"name\":\"owner\",\"type\":\"address\"},{\"indexed\":true,\"internalType\":\"address\",\"name\":\"operator\",\"type\":\"address\"},{\"indexed\":false,\"internalType\":\"bool\",\"name\":\"approved\",\"type\":\"bool\"}],\"name\":\"ApprovalForAll\",\"type\":\"event\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"}],\"name\":\"BurnArtwork\",\"type\":\"event\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"internalType\":\"address\",\"name\":\"buyer\",\"type\":\"address\"},{\"indexed\":true,\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"}],\"name\":\"BuyArtwork\",\"type\":\"event\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"internalType\":\"address\",\"name\":\"owner\",\"type\":\"address\"},{\"indexed\":true,\"internalType\":\"uint256\",\"name\":\"seriesId\",\"type\":\"uint256\"},{\"indexed\":true,\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"}],\"name\":\"NewArtwork\",\"type\":\"event\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"internalType\":\"address\",\"name\":\"previousOwner\",\"type\":\"address\"},{\"indexed\":true,\"internalType\":\"address\",\"name\":\"newOwner\",\"type\":\"address\"}],\"name\":\"OwnershipTransferred\",\"type\":\"event\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"internalType\":\"address\",\"name\":\"from\",\"type\":\"address\"},{\"indexed\":true,\"internalType\":\"address\",\"name\":\"to\",\"type\":\"address\"},{\"indexed\":true,\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"}],\"name\":\"Transfer\",\"type\":\"event\"},{\"inputs\":[],\"name\":\"OperatorFilterRegistry\",\"outputs\":[{\"internalType\":\"contractIOperatorFilterRegistry\",\"name\":\"\",\"type\":\"address\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"_trustee\",\"type\":\"address\"}],\"name\":\"addTrustee\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"\",\"type\":\"address\"}],\"name\":\"advances\",\"outputs\":[{\"internalType\":\"uint256\",\"name\":\"\",\"type\":\"uint256\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"operator\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"}],\"name\":\"approve\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"owner\",\"type\":\"address\"}],\"name\":\"balanceOf\",\"outputs\":[{\"internalType\":\"uint256\",\"name\":\"\",\"type\":\"uint256\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"bridgeable\",\"outputs\":[{\"internalType\":\"bool\",\"name\":\"\",\"type\":\"bool\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"uint256[]\",\"name\":\"tokenIds\",\"type\":\"uint256[]\"}],\"name\":\"burnArtworks\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"burnable\",\"outputs\":[{\"internalType\":\"bool\",\"name\":\"\",\"type\":\"bool\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"codeVersion\",\"outputs\":[{\"internalType\":\"string\",\"name\":\"\",\"type\":\"string\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"contractURI\",\"outputs\":[{\"internalType\":\"string\",\"name\":\"\",\"type\":\"string\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"costReceiver\",\"outputs\":[{\"internalType\":\"address\",\"name\":\"\",\"type\":\"address\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"}],\"name\":\"getApproved\",\"outputs\":[{\"internalType\":\"address\",\"name\":\"\",\"type\":\"address\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"}],\"name\":\"getArtwork\",\"outputs\":[{\"components\":[{\"internalType\":\"uint256\",\"name\":\"seriesId\",\"type\":\"uint256\"},{\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"}],\"internalType\":\"structFeralfileExhibitionV4.Artwork\",\"name\":\"\",\"type\":\"tuple\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"owner\",\"type\":\"address\"},{\"internalType\":\"address\",\"name\":\"operator\",\"type\":\"address\"}],\"name\":\"isApprovedForAll\",\"outputs\":[{\"internalType\":\"bool\",\"name\":\"\",\"type\":\"bool\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"components\":[{\"internalType\":\"uint256\",\"name\":\"seriesId\",\"type\":\"uint256\"},{\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"},{\"internalType\":\"address\",\"name\":\"owner\",\"type\":\"address\"}],\"internalType\":\"structFeralfileExhibitionV4.MintData[]\",\"name\":\"data\",\"type\":\"tuple[]\"}],\"name\":\"mintArtworks\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"mintable\",\"outputs\":[{\"internalType\":\"bool\",\"name\":\"\",\"type\":\"bool\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"name\",\"outputs\":[{\"internalType\":\"string\",\"name\":\"\",\"type\":\"string\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"owner\",\"outputs\":[{\"internalType\":\"address\",\"name\":\"\",\"type\":\"address\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"}],\"name\":\"ownerOf\",\"outputs\":[{\"internalType\":\"address\",\"name\":\"\",\"type\":\"address\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"pauseSale\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"_trustee\",\"type\":\"address\"}],\"name\":\"removeTrustee\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"renounceOwnership\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"resumeSale\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"from\",\"type\":\"address\"},{\"internalType\":\"address\",\"name\":\"to\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"}],\"name\":\"safeTransferFrom\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"from\",\"type\":\"address\"},{\"internalType\":\"address\",\"name\":\"to\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"},{\"internalType\":\"bytes\",\"name\":\"data\",\"type\":\"bytes\"}],\"name\":\"safeTransferFrom\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"selling\",\"outputs\":[{\"internalType\":\"bool\",\"name\":\"\",\"type\":\"bool\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"uint256\",\"name\":\"seriesId\",\"type\":\"uint256\"}],\"name\":\"seriesMaxSupply\",\"outputs\":[{\"internalType\":\"uint256\",\"name\":\"\",\"type\":\"uint256\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"uint256\",\"name\":\"seriesId\",\"type\":\"uint256\"}],\"name\":\"seriesTotalSupply\",\"outputs\":[{\"internalType\":\"uint256\",\"name\":\"\",\"type\":\"uint256\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"operator\",\"type\":\"address\"},{\"internalType\":\"bool\",\"name\":\"approved\",\"type\":\"bool\"}],\"name\":\"setApprovalForAll\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"costReceiver_\",\"type\":\"address\"}],\"name\":\"setCostReceiver\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"signer_\",\"type\":\"address\"}],\"name\":\"setSigner\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"string\",\"name\":\"baseURI_\",\"type\":\"string\"}],\"name\":\"setTokenBaseURI\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"vault_\",\"type\":\"address\"}],\"name\":\"setVault\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"signer\",\"outputs\":[{\"internalType\":\"address\",\"name\":\"\",\"type\":\"address\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"startSale\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"stopSaleAndBurn\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"uint256[]\",\"name\":\"seriesIds\",\"type\":\"uint256[]\"},{\"internalType\":\"address[]\",\"name\":\"recipientAddresses\",\"type\":\"address[]\"}],\"name\":\"stopSaleAndTransfer\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"bytes4\",\"name\":\"interfaceId\",\"type\":\"bytes4\"}],\"name\":\"supportsInterface\",\"outputs\":[{\"internalType\":\"bool\",\"name\":\"\",\"type\":\"bool\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"symbol\",\"outputs\":[{\"internalType\":\"string\",\"name\":\"\",\"type\":\"string\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"tokenBaseURI\",\"outputs\":[{\"internalType\":\"string\",\"name\":\"\",\"type\":\"string\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"owner\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"index\",\"type\":\"uint256\"}],\"name\":\"tokenOfOwnerByIndex\",\"outputs\":[{\"internalType\":\"uint256\",\"name\":\"\",\"type\":\"uint256\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"}],\"name\":\"tokenURI\",\"outputs\":[{\"internalType\":\"string\",\"name\":\"\",\"type\":\"string\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"owner\",\"type\":\"address\"}],\"name\":\"tokensOfOwner\",\"outputs\":[{\"internalType\":\"uint256[]\",\"name\":\"\",\"type\":\"uint256[]\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"totalSupply\",\"outputs\":[{\"internalType\":\"uint256\",\"name\":\"\",\"type\":\"uint256\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"from\",\"type\":\"address\"},{\"internalType\":\"address\",\"name\":\"to\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"}],\"name\":\"transferFrom\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"newOwner\",\"type\":\"address\"}],\"name\":\"transferOwnership\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"\",\"type\":\"address\"}],\"name\":\"trustees\",\"outputs\":[{\"internalType\":\"bool\",\"name\":\"\",\"type\":\"bool\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"operatorFilterRegisterAddress\",\"type\":\"address\"}],\"name\":\"updateOperatorFilterRegistry\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"vault\",\"outputs\":[{\"internalType\":\"contractIFeralfileVault\",\"name\":\"\",\"type\":\"address\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"stateMutability\":\"payable\",\"type\":\"receive\"},{\"inputs\":[{\"internalType\":\"address[]\",\"name\":\"addresses_\",\"type\":\"address[]\"},{\"internalType\":\"uint256[]\",\"name\":\"amounts_\",\"type\":\"uint256[]\"}],\"name\":\"setAdvanceSetting\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address[]\",\"name\":\"oldAddresses_\",\"type\":\"address[]\"},{\"internalType\":\"address[]\",\"name\":\"newAddresses_\",\"type\":\"address[]\"}],\"name\":\"replaceAdvanceAddresses\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"bytes32\",\"name\":\"r_\",\"type\":\"bytes32\"},{\"internalType\":\"bytes32\",\"name\":\"s_\",\"type\":\"bytes32\"},{\"internalType\":\"uint8\",\"name\":\"v_\",\"type\":\"uint8\"},{\"components\":[{\"internalType\":\"uint256\",\"name\":\"price\",\"type\":\"uint256\"},{\"internalType\":\"uint256\",\"name\":\"cost\",\"type\":\"uint256\"},{\"internalType\":\"uint256\",\"name\":\"expiryTime\",\"type\":\"uint256\"},{\"internalType\":\"address\",\"name\":\"destination\",\"type\":\"address\"},{\"internalType\":\"uint256[]\",\"name\":\"tokenIds\",\"type\":\"uint256[]\"},{\"components\":[{\"internalType\":\"address\",\"name\":\"recipient\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"bps\",\"type\":\"uint256\"}],\"internalType\":\"structIFeralfileSaleData.RevenueShare[][]\",\"name\":\"revenueShares\",\"type\":\"tuple[][]\"},{\"internalType\":\"bool\",\"name\":\"payByVaultContract\",\"type\":\"bool\"}],\"internalType\":\"structIFeralfileSaleData.SaleData\",\"name\":\"saleData_\",\"type\":\"tuple\"}],\"name\":\"buyArtworks\",\"outputs\":[],\"stateMutability\":\"payable\",\"type\":\"function\"}]",
-	Bin: 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 }
 
 // FeralfileExhibitionV4ABI is the input ABI used to generate the binding from.
diff --git a/go-binding/feralfile-exhibition-v4_2/abi.go b/go-binding/feralfile-exhibition-v4_2/abi.go
index 91d2e96..9aa1285 100644
--- a/go-binding/feralfile-exhibition-v4_2/abi.go
+++ b/go-binding/feralfile-exhibition-v4_2/abi.go
@@ -75,7 +75,7 @@ type IFeralfileSaleDataV2SaleDataV2 struct {
 // FeralfileExhibitionV42MetaData contains all meta data concerning the FeralfileExhibitionV42 contract.
 var FeralfileExhibitionV42MetaData = &bind.MetaData{
 	ABI: "[{\"inputs\":[{\"internalType\":\"string\",\"name\":\"name_\",\"type\":\"string\"},{\"internalType\":\"string\",\"name\":\"symbol_\",\"type\":\"string\"},{\"internalType\":\"bool\",\"name\":\"burnable_\",\"type\":\"bool\"},{\"internalType\":\"bool\",\"name\":\"bridgeable_\",\"type\":\"bool\"},{\"internalType\":\"address\",\"name\":\"signer_\",\"type\":\"address\"},{\"internalType\":\"address\",\"name\":\"vault_\",\"type\":\"address\"},{\"internalType\":\"address\",\"name\":\"costReceiver_\",\"type\":\"address\"},{\"internalType\":\"string\",\"name\":\"contractURI_\",\"type\":\"string\"},{\"internalType\":\"uint256[]\",\"name\":\"seriesIds_\",\"type\":\"uint256[]\"},{\"internalType\":\"uint256[]\",\"name\":\"seriesMaxSupplies_\",\"type\":\"uint256[]\"},{\"internalType\":\"uint256[]\",\"name\":\"seriesNextPurchasableTokenIds_\",\"type\":\"uint256[]\"}],\"stateMutability\":\"nonpayable\",\"type\":\"constructor\"},{\"inputs\":[],\"name\":\"AdvanceAddressAlreadyUsed\",\"type\":\"error\"},{\"inputs\":[],\"name\":\"FunctionNotSupported\",\"type\":\"error\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"account\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"currentNonce\",\"type\":\"uint256\"}],\"name\":\"InvalidAccountNonce\",\"type\":\"error\"},{\"inputs\":[],\"name\":\"InvalidAddress\",\"type\":\"error\"},{\"inputs\":[],\"name\":\"InvalidAdvanceAddress\",\"type\":\"error\"},{\"inputs\":[],\"name\":\"InvalidAdvanceAddressesAndAmounts\",\"type\":\"error\"},{\"inputs\":[],\"name\":\"InvalidAdvanceAmount\",\"type\":\"error\"},{\"inputs\":[],\"name\":\"InvalidPaymentAmount\",\"type\":\"error\"},{\"inputs\":[],\"name\":\"InvalidSignature\",\"type\":\"error\"},{\"inputs\":[],\"name\":\"NotEnoughToken\",\"type\":\"error\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"operator\",\"type\":\"address\"}],\"name\":\"OperatorNotAllowed\",\"type\":\"error\"},{\"inputs\":[],\"name\":\"SaleNotStarted\",\"type\":\"error\"},{\"inputs\":[],\"name\":\"SeriesLengthMismatch\",\"type\":\"error\"},{\"inputs\":[],\"name\":\"TokenIDNotFound\",\"type\":\"error\"},{\"inputs\":[],\"name\":\"TotalBpsOver\",\"type\":\"error\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"internalType\":\"address\",\"name\":\"owner\",\"type\":\"address\"},{\"indexed\":true,\"internalType\":\"address\",\"name\":\"approved\",\"type\":\"address\"},{\"indexed\":true,\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"}],\"name\":\"Approval\",\"type\":\"event\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"internalType\":\"address\",\"name\":\"owner\",\"type\":\"address\"},{\"indexed\":true,\"internalType\":\"address\",\"name\":\"operator\",\"type\":\"address\"},{\"indexed\":false,\"internalType\":\"bool\",\"name\":\"approved\",\"type\":\"bool\"}],\"name\":\"ApprovalForAll\",\"type\":\"event\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"}],\"name\":\"BurnArtwork\",\"type\":\"event\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"internalType\":\"address\",\"name\":\"buyer\",\"type\":\"address\"},{\"indexed\":true,\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"}],\"name\":\"BuyArtwork\",\"type\":\"event\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"internalType\":\"address\",\"name\":\"buyer\",\"type\":\"address\"},{\"indexed\":true,\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"},{\"indexed\":false,\"internalType\":\"uint256\",\"name\":\"nonce\",\"type\":\"uint256\"}],\"name\":\"BuyArtworkV2\",\"type\":\"event\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"internalType\":\"address\",\"name\":\"owner\",\"type\":\"address\"},{\"indexed\":true,\"internalType\":\"uint256\",\"name\":\"seriesId\",\"type\":\"uint256\"},{\"indexed\":true,\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"}],\"name\":\"NewArtwork\",\"type\":\"event\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"internalType\":\"address\",\"name\":\"previousOwner\",\"type\":\"address\"},{\"indexed\":true,\"internalType\":\"address\",\"name\":\"newOwner\",\"type\":\"address\"}],\"name\":\"OwnershipTransferred\",\"type\":\"event\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"internalType\":\"address\",\"name\":\"from\",\"type\":\"address\"},{\"indexed\":true,\"internalType\":\"address\",\"name\":\"to\",\"type\":\"address\"},{\"indexed\":true,\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"}],\"name\":\"Transfer\",\"type\":\"event\"},{\"inputs\":[],\"name\":\"OperatorFilterRegistry\",\"outputs\":[{\"internalType\":\"contractIOperatorFilterRegistry\",\"name\":\"\",\"type\":\"address\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"_trustee\",\"type\":\"address\"}],\"name\":\"addTrustee\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"\",\"type\":\"address\"}],\"name\":\"advances\",\"outputs\":[{\"internalType\":\"uint256\",\"name\":\"\",\"type\":\"uint256\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"operator\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"}],\"name\":\"approve\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"owner\",\"type\":\"address\"}],\"name\":\"balanceOf\",\"outputs\":[{\"internalType\":\"uint256\",\"name\":\"\",\"type\":\"uint256\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"bridgeable\",\"outputs\":[{\"internalType\":\"bool\",\"name\":\"\",\"type\":\"bool\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"uint256[]\",\"name\":\"tokenIds\",\"type\":\"uint256[]\"}],\"name\":\"burnArtworks\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"burnable\",\"outputs\":[{\"internalType\":\"bool\",\"name\":\"\",\"type\":\"bool\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"codeVersion\",\"outputs\":[{\"internalType\":\"string\",\"name\":\"\",\"type\":\"string\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"contractURI\",\"outputs\":[{\"internalType\":\"string\",\"name\":\"\",\"type\":\"string\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"costReceiver\",\"outputs\":[{\"internalType\":\"address\",\"name\":\"\",\"type\":\"address\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"}],\"name\":\"getApproved\",\"outputs\":[{\"internalType\":\"address\",\"name\":\"\",\"type\":\"address\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"}],\"name\":\"getArtwork\",\"outputs\":[{\"components\":[{\"internalType\":\"uint256\",\"name\":\"seriesId\",\"type\":\"uint256\"},{\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"}],\"internalType\":\"structFeralfileExhibitionV4.Artwork\",\"name\":\"\",\"type\":\"tuple\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"owner\",\"type\":\"address\"},{\"internalType\":\"address\",\"name\":\"operator\",\"type\":\"address\"}],\"name\":\"isApprovedForAll\",\"outputs\":[{\"internalType\":\"bool\",\"name\":\"\",\"type\":\"bool\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"components\":[{\"internalType\":\"uint256\",\"name\":\"seriesId\",\"type\":\"uint256\"},{\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"},{\"internalType\":\"address\",\"name\":\"owner\",\"type\":\"address\"}],\"internalType\":\"structFeralfileExhibitionV4.MintData[]\",\"name\":\"data\",\"type\":\"tuple[]\"}],\"name\":\"mintArtworks\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"mintable\",\"outputs\":[{\"internalType\":\"bool\",\"name\":\"\",\"type\":\"bool\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"name\",\"outputs\":[{\"internalType\":\"string\",\"name\":\"\",\"type\":\"string\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"owner\",\"type\":\"address\"}],\"name\":\"nonces\",\"outputs\":[{\"internalType\":\"uint256\",\"name\":\"\",\"type\":\"uint256\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"owner\",\"outputs\":[{\"internalType\":\"address\",\"name\":\"\",\"type\":\"address\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"}],\"name\":\"ownerOf\",\"outputs\":[{\"internalType\":\"address\",\"name\":\"\",\"type\":\"address\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"pauseSale\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"_trustee\",\"type\":\"address\"}],\"name\":\"removeTrustee\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"renounceOwnership\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address[]\",\"name\":\"oldAddresses_\",\"type\":\"address[]\"},{\"internalType\":\"address[]\",\"name\":\"newAddresses_\",\"type\":\"address[]\"}],\"name\":\"replaceAdvanceAddresses\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"resumeSale\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"from\",\"type\":\"address\"},{\"internalType\":\"address\",\"name\":\"to\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"}],\"name\":\"safeTransferFrom\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"from\",\"type\":\"address\"},{\"internalType\":\"address\",\"name\":\"to\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"},{\"internalType\":\"bytes\",\"name\":\"data\",\"type\":\"bytes\"}],\"name\":\"safeTransferFrom\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"selling\",\"outputs\":[{\"internalType\":\"bool\",\"name\":\"\",\"type\":\"bool\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"uint256\",\"name\":\"seriesId\",\"type\":\"uint256\"}],\"name\":\"seriesMaxSupply\",\"outputs\":[{\"internalType\":\"uint256\",\"name\":\"\",\"type\":\"uint256\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"uint256\",\"name\":\"seriesId\",\"type\":\"uint256\"}],\"name\":\"seriesTotalSupply\",\"outputs\":[{\"internalType\":\"uint256\",\"name\":\"\",\"type\":\"uint256\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address[]\",\"name\":\"addresses_\",\"type\":\"address[]\"},{\"internalType\":\"uint256[]\",\"name\":\"amounts_\",\"type\":\"uint256[]\"}],\"name\":\"setAdvanceSetting\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"operator\",\"type\":\"address\"},{\"internalType\":\"bool\",\"name\":\"approved\",\"type\":\"bool\"}],\"name\":\"setApprovalForAll\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"costReceiver_\",\"type\":\"address\"}],\"name\":\"setCostReceiver\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"signer_\",\"type\":\"address\"}],\"name\":\"setSigner\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"string\",\"name\":\"baseURI_\",\"type\":\"string\"}],\"name\":\"setTokenBaseURI\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"signer\",\"outputs\":[{\"internalType\":\"address\",\"name\":\"\",\"type\":\"address\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"startSale\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"stopSaleAndBurn\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"uint256[]\",\"name\":\"seriesIds\",\"type\":\"uint256[]\"},{\"internalType\":\"address[]\",\"name\":\"recipientAddresses\",\"type\":\"address[]\"}],\"name\":\"stopSaleAndTransfer\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"bytes4\",\"name\":\"interfaceId\",\"type\":\"bytes4\"}],\"name\":\"supportsInterface\",\"outputs\":[{\"internalType\":\"bool\",\"name\":\"\",\"type\":\"bool\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"symbol\",\"outputs\":[{\"internalType\":\"string\",\"name\":\"\",\"type\":\"string\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"tokenBaseURI\",\"outputs\":[{\"internalType\":\"string\",\"name\":\"\",\"type\":\"string\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"owner\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"index\",\"type\":\"uint256\"}],\"name\":\"tokenOfOwnerByIndex\",\"outputs\":[{\"internalType\":\"uint256\",\"name\":\"\",\"type\":\"uint256\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"}],\"name\":\"tokenURI\",\"outputs\":[{\"internalType\":\"string\",\"name\":\"\",\"type\":\"string\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"owner\",\"type\":\"address\"}],\"name\":\"tokensOfOwner\",\"outputs\":[{\"internalType\":\"uint256[]\",\"name\":\"\",\"type\":\"uint256[]\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"totalSupply\",\"outputs\":[{\"internalType\":\"uint256\",\"name\":\"\",\"type\":\"uint256\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"from\",\"type\":\"address\"},{\"internalType\":\"address\",\"name\":\"to\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"}],\"name\":\"transferFrom\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"newOwner\",\"type\":\"address\"}],\"name\":\"transferOwnership\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"\",\"type\":\"address\"}],\"name\":\"trustees\",\"outputs\":[{\"internalType\":\"bool\",\"name\":\"\",\"type\":\"bool\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"operatorFilterRegisterAddress\",\"type\":\"address\"}],\"name\":\"updateOperatorFilterRegistry\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"vault\",\"outputs\":[{\"internalType\":\"contractIFeralfileVault\",\"name\":\"\",\"type\":\"address\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"vaultV2\",\"outputs\":[{\"internalType\":\"contractIFeralfileVaultV2\",\"name\":\"\",\"type\":\"address\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"stateMutability\":\"payable\",\"type\":\"receive\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"vault_\",\"type\":\"address\"}],\"name\":\"setVaultV2\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"\",\"type\":\"address\"}],\"name\":\"setVault\",\"outputs\":[],\"stateMutability\":\"pure\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"bytes32\",\"name\":\"r_\",\"type\":\"bytes32\"},{\"internalType\":\"bytes32\",\"name\":\"s_\",\"type\":\"bytes32\"},{\"internalType\":\"uint8\",\"name\":\"v_\",\"type\":\"uint8\"},{\"components\":[{\"internalType\":\"uint256\",\"name\":\"price\",\"type\":\"uint256\"},{\"internalType\":\"uint256\",\"name\":\"cost\",\"type\":\"uint256\"},{\"internalType\":\"uint256\",\"name\":\"expiryTime\",\"type\":\"uint256\"},{\"internalType\":\"address\",\"name\":\"destination\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"nonce\",\"type\":\"uint256\"},{\"internalType\":\"uint256\",\"name\":\"seriesID\",\"type\":\"uint256\"},{\"internalType\":\"uint16\",\"name\":\"quantity\",\"type\":\"uint16\"},{\"components\":[{\"internalType\":\"address\",\"name\":\"recipient\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"bps\",\"type\":\"uint256\"}],\"internalType\":\"structIFeralfileSaleData.RevenueShare[]\",\"name\":\"revenueShares\",\"type\":\"tuple[]\"},{\"internalType\":\"bool\",\"name\":\"payByVaultContract\",\"type\":\"bool\"}],\"internalType\":\"structIFeralfileSaleDataV2.SaleDataV2\",\"name\":\"saleData_\",\"type\":\"tuple\"}],\"name\":\"buyBulkArtworks\",\"outputs\":[],\"stateMutability\":\"payable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"bytes32\",\"name\":\"\",\"type\":\"bytes32\"},{\"internalType\":\"bytes32\",\"name\":\"\",\"type\":\"bytes32\"},{\"internalType\":\"uint8\",\"name\":\"\",\"type\":\"uint8\"},{\"components\":[{\"internalType\":\"uint256\",\"name\":\"price\",\"type\":\"uint256\"},{\"internalType\":\"uint256\",\"name\":\"cost\",\"type\":\"uint256\"},{\"internalType\":\"uint256\",\"name\":\"expiryTime\",\"type\":\"uint256\"},{\"internalType\":\"address\",\"name\":\"destination\",\"type\":\"address\"},{\"internalType\":\"uint256[]\",\"name\":\"tokenIds\",\"type\":\"uint256[]\"},{\"components\":[{\"internalType\":\"address\",\"name\":\"recipient\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"bps\",\"type\":\"uint256\"}],\"internalType\":\"structIFeralfileSaleData.RevenueShare[][]\",\"name\":\"revenueShares\",\"type\":\"tuple[][]\"},{\"internalType\":\"bool\",\"name\":\"payByVaultContract\",\"type\":\"bool\"}],\"internalType\":\"structIFeralfileSaleData.SaleData\",\"name\":\"\",\"type\":\"tuple\"}],\"name\":\"buyArtworks\",\"outputs\":[],\"stateMutability\":\"payable\",\"type\":\"function\"}]",
-	Bin: 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 }
 
 // FeralfileExhibitionV42ABI is the input ABI used to generate the binding from.
diff --git a/go-binding/feralfile-exhibition-v4_3/abi.go b/go-binding/feralfile-exhibition-v4_3/abi.go
new file mode 100644
index 0000000..55c5605
--- /dev/null
+++ b/go-binding/feralfile-exhibition-v4_3/abi.go
@@ -0,0 +1,2900 @@
+// Code generated - DO NOT EDIT.
+// This file is a generated binding and any manual changes will be lost.
+
+package feralfilev4_2
+
+import (
+	"errors"
+	"math/big"
+	"strings"
+
+	ethereum "github.com/ethereum/go-ethereum"
+	"github.com/ethereum/go-ethereum/accounts/abi"
+	"github.com/ethereum/go-ethereum/accounts/abi/bind"
+	"github.com/ethereum/go-ethereum/common"
+	"github.com/ethereum/go-ethereum/core/types"
+	"github.com/ethereum/go-ethereum/event"
+)
+
+// Reference imports to suppress errors if they are not otherwise used.
+var (
+	_ = errors.New
+	_ = big.NewInt
+	_ = strings.NewReader
+	_ = ethereum.NotFound
+	_ = bind.Bind
+	_ = common.Big1
+	_ = types.BloomLookup
+	_ = event.NewSubscription
+	_ = abi.ConvertType
+)
+
+// FeralfileExhibitionV4Artwork is an auto generated low-level Go binding around an user-defined struct.
+type FeralfileExhibitionV4Artwork struct {
+	SeriesId *big.Int
+	TokenId  *big.Int
+}
+
+// FeralfileExhibitionV4MintData is an auto generated low-level Go binding around an user-defined struct.
+type FeralfileExhibitionV4MintData struct {
+	SeriesId *big.Int
+	TokenId  *big.Int
+	Owner    common.Address
+}
+
+// FeralfileExhibitionV43MergeArtworkInfo is an auto generated low-level Go binding around an user-defined struct.
+type FeralfileExhibitionV43MergeArtworkInfo struct {
+	SingleSeriesId *big.Int
+	MergedSeriesId *big.Int
+	NextTokenId    *big.Int
+}
+
+// IFeralfileSaleDataRevenueShare is an auto generated low-level Go binding around an user-defined struct.
+type IFeralfileSaleDataRevenueShare struct {
+	Recipient common.Address
+	Bps       *big.Int
+}
+
+// IFeralfileSaleDataSaleData is an auto generated low-level Go binding around an user-defined struct.
+type IFeralfileSaleDataSaleData struct {
+	Price              *big.Int
+	Cost               *big.Int
+	ExpiryTime         *big.Int
+	Destination        common.Address
+	TokenIds           []*big.Int
+	RevenueShares      [][]IFeralfileSaleDataRevenueShare
+	PayByVaultContract bool
+}
+
+// FeralfileExhibitionV43MetaData contains all meta data concerning the FeralfileExhibitionV43 contract.
+var FeralfileExhibitionV43MetaData = &bind.MetaData{
+	ABI: 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+}
+
+// FeralfileExhibitionV43ABI is the input ABI used to generate the binding from.
+// Deprecated: Use FeralfileExhibitionV43MetaData.ABI instead.
+var FeralfileExhibitionV43ABI = FeralfileExhibitionV43MetaData.ABI
+
+// FeralfileExhibitionV43Bin is the compiled bytecode used for deploying new contracts.
+// Deprecated: Use FeralfileExhibitionV43MetaData.Bin instead.
+var FeralfileExhibitionV43Bin = FeralfileExhibitionV43MetaData.Bin
+
+// DeployFeralfileExhibitionV43 deploys a new Ethereum contract, binding an instance of FeralfileExhibitionV43 to it.
+func DeployFeralfileExhibitionV43(auth *bind.TransactOpts, backend bind.ContractBackend, name_ string, symbol_ string, burnable_ bool, bridgeable_ bool, signer_ common.Address, vault_ common.Address, costReceiver_ common.Address, contractURI_ string, seriesIds_ []*big.Int, seriesMaxSupplies_ []*big.Int, mergeArtworkInfo_ FeralfileExhibitionV43MergeArtworkInfo) (common.Address, *types.Transaction, *FeralfileExhibitionV43, error) {
+	parsed, err := FeralfileExhibitionV43MetaData.GetAbi()
+	if err != nil {
+		return common.Address{}, nil, nil, err
+	}
+	if parsed == nil {
+		return common.Address{}, nil, nil, errors.New("GetABI returned nil")
+	}
+
+	address, tx, contract, err := bind.DeployContract(auth, *parsed, common.FromHex(FeralfileExhibitionV43Bin), backend, name_, symbol_, burnable_, bridgeable_, signer_, vault_, costReceiver_, contractURI_, seriesIds_, seriesMaxSupplies_, mergeArtworkInfo_)
+	if err != nil {
+		return common.Address{}, nil, nil, err
+	}
+	return address, tx, &FeralfileExhibitionV43{FeralfileExhibitionV43Caller: FeralfileExhibitionV43Caller{contract: contract}, FeralfileExhibitionV43Transactor: FeralfileExhibitionV43Transactor{contract: contract}, FeralfileExhibitionV43Filterer: FeralfileExhibitionV43Filterer{contract: contract}}, nil
+}
+
+// FeralfileExhibitionV43 is an auto generated Go binding around an Ethereum contract.
+type FeralfileExhibitionV43 struct {
+	FeralfileExhibitionV43Caller     // Read-only binding to the contract
+	FeralfileExhibitionV43Transactor // Write-only binding to the contract
+	FeralfileExhibitionV43Filterer   // Log filterer for contract events
+}
+
+// FeralfileExhibitionV43Caller is an auto generated read-only Go binding around an Ethereum contract.
+type FeralfileExhibitionV43Caller struct {
+	contract *bind.BoundContract // Generic contract wrapper for the low level calls
+}
+
+// FeralfileExhibitionV43Transactor is an auto generated write-only Go binding around an Ethereum contract.
+type FeralfileExhibitionV43Transactor struct {
+	contract *bind.BoundContract // Generic contract wrapper for the low level calls
+}
+
+// FeralfileExhibitionV43Filterer is an auto generated log filtering Go binding around an Ethereum contract events.
+type FeralfileExhibitionV43Filterer struct {
+	contract *bind.BoundContract // Generic contract wrapper for the low level calls
+}
+
+// FeralfileExhibitionV43Session is an auto generated Go binding around an Ethereum contract,
+// with pre-set call and transact options.
+type FeralfileExhibitionV43Session struct {
+	Contract     *FeralfileExhibitionV43 // Generic contract binding to set the session for
+	CallOpts     bind.CallOpts           // Call options to use throughout this session
+	TransactOpts bind.TransactOpts       // Transaction auth options to use throughout this session
+}
+
+// FeralfileExhibitionV43CallerSession is an auto generated read-only Go binding around an Ethereum contract,
+// with pre-set call options.
+type FeralfileExhibitionV43CallerSession struct {
+	Contract *FeralfileExhibitionV43Caller // Generic contract caller binding to set the session for
+	CallOpts bind.CallOpts                 // Call options to use throughout this session
+}
+
+// FeralfileExhibitionV43TransactorSession is an auto generated write-only Go binding around an Ethereum contract,
+// with pre-set transact options.
+type FeralfileExhibitionV43TransactorSession struct {
+	Contract     *FeralfileExhibitionV43Transactor // Generic contract transactor binding to set the session for
+	TransactOpts bind.TransactOpts                 // Transaction auth options to use throughout this session
+}
+
+// FeralfileExhibitionV43Raw is an auto generated low-level Go binding around an Ethereum contract.
+type FeralfileExhibitionV43Raw struct {
+	Contract *FeralfileExhibitionV43 // Generic contract binding to access the raw methods on
+}
+
+// FeralfileExhibitionV43CallerRaw is an auto generated low-level read-only Go binding around an Ethereum contract.
+type FeralfileExhibitionV43CallerRaw struct {
+	Contract *FeralfileExhibitionV43Caller // Generic read-only contract binding to access the raw methods on
+}
+
+// FeralfileExhibitionV43TransactorRaw is an auto generated low-level write-only Go binding around an Ethereum contract.
+type FeralfileExhibitionV43TransactorRaw struct {
+	Contract *FeralfileExhibitionV43Transactor // Generic write-only contract binding to access the raw methods on
+}
+
+// NewFeralfileExhibitionV43 creates a new instance of FeralfileExhibitionV43, bound to a specific deployed contract.
+func NewFeralfileExhibitionV43(address common.Address, backend bind.ContractBackend) (*FeralfileExhibitionV43, error) {
+	contract, err := bindFeralfileExhibitionV43(address, backend, backend, backend)
+	if err != nil {
+		return nil, err
+	}
+	return &FeralfileExhibitionV43{FeralfileExhibitionV43Caller: FeralfileExhibitionV43Caller{contract: contract}, FeralfileExhibitionV43Transactor: FeralfileExhibitionV43Transactor{contract: contract}, FeralfileExhibitionV43Filterer: FeralfileExhibitionV43Filterer{contract: contract}}, nil
+}
+
+// NewFeralfileExhibitionV43Caller creates a new read-only instance of FeralfileExhibitionV43, bound to a specific deployed contract.
+func NewFeralfileExhibitionV43Caller(address common.Address, caller bind.ContractCaller) (*FeralfileExhibitionV43Caller, error) {
+	contract, err := bindFeralfileExhibitionV43(address, caller, nil, nil)
+	if err != nil {
+		return nil, err
+	}
+	return &FeralfileExhibitionV43Caller{contract: contract}, nil
+}
+
+// NewFeralfileExhibitionV43Transactor creates a new write-only instance of FeralfileExhibitionV43, bound to a specific deployed contract.
+func NewFeralfileExhibitionV43Transactor(address common.Address, transactor bind.ContractTransactor) (*FeralfileExhibitionV43Transactor, error) {
+	contract, err := bindFeralfileExhibitionV43(address, nil, transactor, nil)
+	if err != nil {
+		return nil, err
+	}
+	return &FeralfileExhibitionV43Transactor{contract: contract}, nil
+}
+
+// NewFeralfileExhibitionV43Filterer creates a new log filterer instance of FeralfileExhibitionV43, bound to a specific deployed contract.
+func NewFeralfileExhibitionV43Filterer(address common.Address, filterer bind.ContractFilterer) (*FeralfileExhibitionV43Filterer, error) {
+	contract, err := bindFeralfileExhibitionV43(address, nil, nil, filterer)
+	if err != nil {
+		return nil, err
+	}
+	return &FeralfileExhibitionV43Filterer{contract: contract}, nil
+}
+
+// bindFeralfileExhibitionV43 binds a generic wrapper to an already deployed contract.
+func bindFeralfileExhibitionV43(address common.Address, caller bind.ContractCaller, transactor bind.ContractTransactor, filterer bind.ContractFilterer) (*bind.BoundContract, error) {
+	parsed, err := FeralfileExhibitionV43MetaData.GetAbi()
+	if err != nil {
+		return nil, err
+	}
+	return bind.NewBoundContract(address, *parsed, caller, transactor, filterer), nil
+}
+
+// Call invokes the (constant) contract method with params as input values and
+// sets the output to result. The result type might be a single field for simple
+// returns, a slice of interfaces for anonymous returns and a struct for named
+// returns.
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43Raw) Call(opts *bind.CallOpts, result *[]interface{}, method string, params ...interface{}) error {
+	return _FeralfileExhibitionV43.Contract.FeralfileExhibitionV43Caller.contract.Call(opts, result, method, params...)
+}
+
+// Transfer initiates a plain transaction to move funds to the contract, calling
+// its default method if one is available.
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43Raw) Transfer(opts *bind.TransactOpts) (*types.Transaction, error) {
+	return _FeralfileExhibitionV43.Contract.FeralfileExhibitionV43Transactor.contract.Transfer(opts)
+}
+
+// Transact invokes the (paid) contract method with params as input values.
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43Raw) Transact(opts *bind.TransactOpts, method string, params ...interface{}) (*types.Transaction, error) {
+	return _FeralfileExhibitionV43.Contract.FeralfileExhibitionV43Transactor.contract.Transact(opts, method, params...)
+}
+
+// Call invokes the (constant) contract method with params as input values and
+// sets the output to result. The result type might be a single field for simple
+// returns, a slice of interfaces for anonymous returns and a struct for named
+// returns.
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43CallerRaw) Call(opts *bind.CallOpts, result *[]interface{}, method string, params ...interface{}) error {
+	return _FeralfileExhibitionV43.Contract.contract.Call(opts, result, method, params...)
+}
+
+// Transfer initiates a plain transaction to move funds to the contract, calling
+// its default method if one is available.
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43TransactorRaw) Transfer(opts *bind.TransactOpts) (*types.Transaction, error) {
+	return _FeralfileExhibitionV43.Contract.contract.Transfer(opts)
+}
+
+// Transact invokes the (paid) contract method with params as input values.
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43TransactorRaw) Transact(opts *bind.TransactOpts, method string, params ...interface{}) (*types.Transaction, error) {
+	return _FeralfileExhibitionV43.Contract.contract.Transact(opts, method, params...)
+}
+
+// OperatorFilterRegistry is a free data retrieval call binding the contract method 0xf07e7fd0.
+//
+// Solidity: function OperatorFilterRegistry() view returns(address)
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43Caller) OperatorFilterRegistry(opts *bind.CallOpts) (common.Address, error) {
+	var out []interface{}
+	err := _FeralfileExhibitionV43.contract.Call(opts, &out, "OperatorFilterRegistry")
+
+	if err != nil {
+		return *new(common.Address), err
+	}
+
+	out0 := *abi.ConvertType(out[0], new(common.Address)).(*common.Address)
+
+	return out0, err
+
+}
+
+// OperatorFilterRegistry is a free data retrieval call binding the contract method 0xf07e7fd0.
+//
+// Solidity: function OperatorFilterRegistry() view returns(address)
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43Session) OperatorFilterRegistry() (common.Address, error) {
+	return _FeralfileExhibitionV43.Contract.OperatorFilterRegistry(&_FeralfileExhibitionV43.CallOpts)
+}
+
+// OperatorFilterRegistry is a free data retrieval call binding the contract method 0xf07e7fd0.
+//
+// Solidity: function OperatorFilterRegistry() view returns(address)
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43CallerSession) OperatorFilterRegistry() (common.Address, error) {
+	return _FeralfileExhibitionV43.Contract.OperatorFilterRegistry(&_FeralfileExhibitionV43.CallOpts)
+}
+
+// Advances is a free data retrieval call binding the contract method 0x926ce44e.
+//
+// Solidity: function advances(address ) view returns(uint256)
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43Caller) Advances(opts *bind.CallOpts, arg0 common.Address) (*big.Int, error) {
+	var out []interface{}
+	err := _FeralfileExhibitionV43.contract.Call(opts, &out, "advances", arg0)
+
+	if err != nil {
+		return *new(*big.Int), err
+	}
+
+	out0 := *abi.ConvertType(out[0], new(*big.Int)).(**big.Int)
+
+	return out0, err
+
+}
+
+// Advances is a free data retrieval call binding the contract method 0x926ce44e.
+//
+// Solidity: function advances(address ) view returns(uint256)
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43Session) Advances(arg0 common.Address) (*big.Int, error) {
+	return _FeralfileExhibitionV43.Contract.Advances(&_FeralfileExhibitionV43.CallOpts, arg0)
+}
+
+// Advances is a free data retrieval call binding the contract method 0x926ce44e.
+//
+// Solidity: function advances(address ) view returns(uint256)
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43CallerSession) Advances(arg0 common.Address) (*big.Int, error) {
+	return _FeralfileExhibitionV43.Contract.Advances(&_FeralfileExhibitionV43.CallOpts, arg0)
+}
+
+// BalanceOf is a free data retrieval call binding the contract method 0x70a08231.
+//
+// Solidity: function balanceOf(address owner) view returns(uint256)
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43Caller) BalanceOf(opts *bind.CallOpts, owner common.Address) (*big.Int, error) {
+	var out []interface{}
+	err := _FeralfileExhibitionV43.contract.Call(opts, &out, "balanceOf", owner)
+
+	if err != nil {
+		return *new(*big.Int), err
+	}
+
+	out0 := *abi.ConvertType(out[0], new(*big.Int)).(**big.Int)
+
+	return out0, err
+
+}
+
+// BalanceOf is a free data retrieval call binding the contract method 0x70a08231.
+//
+// Solidity: function balanceOf(address owner) view returns(uint256)
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43Session) BalanceOf(owner common.Address) (*big.Int, error) {
+	return _FeralfileExhibitionV43.Contract.BalanceOf(&_FeralfileExhibitionV43.CallOpts, owner)
+}
+
+// BalanceOf is a free data retrieval call binding the contract method 0x70a08231.
+//
+// Solidity: function balanceOf(address owner) view returns(uint256)
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43CallerSession) BalanceOf(owner common.Address) (*big.Int, error) {
+	return _FeralfileExhibitionV43.Contract.BalanceOf(&_FeralfileExhibitionV43.CallOpts, owner)
+}
+
+// Bridgeable is a free data retrieval call binding the contract method 0x530da8ef.
+//
+// Solidity: function bridgeable() view returns(bool)
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43Caller) Bridgeable(opts *bind.CallOpts) (bool, error) {
+	var out []interface{}
+	err := _FeralfileExhibitionV43.contract.Call(opts, &out, "bridgeable")
+
+	if err != nil {
+		return *new(bool), err
+	}
+
+	out0 := *abi.ConvertType(out[0], new(bool)).(*bool)
+
+	return out0, err
+
+}
+
+// Bridgeable is a free data retrieval call binding the contract method 0x530da8ef.
+//
+// Solidity: function bridgeable() view returns(bool)
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43Session) Bridgeable() (bool, error) {
+	return _FeralfileExhibitionV43.Contract.Bridgeable(&_FeralfileExhibitionV43.CallOpts)
+}
+
+// Bridgeable is a free data retrieval call binding the contract method 0x530da8ef.
+//
+// Solidity: function bridgeable() view returns(bool)
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43CallerSession) Bridgeable() (bool, error) {
+	return _FeralfileExhibitionV43.Contract.Bridgeable(&_FeralfileExhibitionV43.CallOpts)
+}
+
+// Burnable is a free data retrieval call binding the contract method 0xa07c7ce4.
+//
+// Solidity: function burnable() view returns(bool)
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43Caller) Burnable(opts *bind.CallOpts) (bool, error) {
+	var out []interface{}
+	err := _FeralfileExhibitionV43.contract.Call(opts, &out, "burnable")
+
+	if err != nil {
+		return *new(bool), err
+	}
+
+	out0 := *abi.ConvertType(out[0], new(bool)).(*bool)
+
+	return out0, err
+
+}
+
+// Burnable is a free data retrieval call binding the contract method 0xa07c7ce4.
+//
+// Solidity: function burnable() view returns(bool)
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43Session) Burnable() (bool, error) {
+	return _FeralfileExhibitionV43.Contract.Burnable(&_FeralfileExhibitionV43.CallOpts)
+}
+
+// Burnable is a free data retrieval call binding the contract method 0xa07c7ce4.
+//
+// Solidity: function burnable() view returns(bool)
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43CallerSession) Burnable() (bool, error) {
+	return _FeralfileExhibitionV43.Contract.Burnable(&_FeralfileExhibitionV43.CallOpts)
+}
+
+// CodeVersion is a free data retrieval call binding the contract method 0x63e60230.
+//
+// Solidity: function codeVersion() view returns(string)
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43Caller) CodeVersion(opts *bind.CallOpts) (string, error) {
+	var out []interface{}
+	err := _FeralfileExhibitionV43.contract.Call(opts, &out, "codeVersion")
+
+	if err != nil {
+		return *new(string), err
+	}
+
+	out0 := *abi.ConvertType(out[0], new(string)).(*string)
+
+	return out0, err
+
+}
+
+// CodeVersion is a free data retrieval call binding the contract method 0x63e60230.
+//
+// Solidity: function codeVersion() view returns(string)
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43Session) CodeVersion() (string, error) {
+	return _FeralfileExhibitionV43.Contract.CodeVersion(&_FeralfileExhibitionV43.CallOpts)
+}
+
+// CodeVersion is a free data retrieval call binding the contract method 0x63e60230.
+//
+// Solidity: function codeVersion() view returns(string)
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43CallerSession) CodeVersion() (string, error) {
+	return _FeralfileExhibitionV43.Contract.CodeVersion(&_FeralfileExhibitionV43.CallOpts)
+}
+
+// ContractURI is a free data retrieval call binding the contract method 0xe8a3d485.
+//
+// Solidity: function contractURI() view returns(string)
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43Caller) ContractURI(opts *bind.CallOpts) (string, error) {
+	var out []interface{}
+	err := _FeralfileExhibitionV43.contract.Call(opts, &out, "contractURI")
+
+	if err != nil {
+		return *new(string), err
+	}
+
+	out0 := *abi.ConvertType(out[0], new(string)).(*string)
+
+	return out0, err
+
+}
+
+// ContractURI is a free data retrieval call binding the contract method 0xe8a3d485.
+//
+// Solidity: function contractURI() view returns(string)
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43Session) ContractURI() (string, error) {
+	return _FeralfileExhibitionV43.Contract.ContractURI(&_FeralfileExhibitionV43.CallOpts)
+}
+
+// ContractURI is a free data retrieval call binding the contract method 0xe8a3d485.
+//
+// Solidity: function contractURI() view returns(string)
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43CallerSession) ContractURI() (string, error) {
+	return _FeralfileExhibitionV43.Contract.ContractURI(&_FeralfileExhibitionV43.CallOpts)
+}
+
+// CostReceiver is a free data retrieval call binding the contract method 0xf4e638be.
+//
+// Solidity: function costReceiver() view returns(address)
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43Caller) CostReceiver(opts *bind.CallOpts) (common.Address, error) {
+	var out []interface{}
+	err := _FeralfileExhibitionV43.contract.Call(opts, &out, "costReceiver")
+
+	if err != nil {
+		return *new(common.Address), err
+	}
+
+	out0 := *abi.ConvertType(out[0], new(common.Address)).(*common.Address)
+
+	return out0, err
+
+}
+
+// CostReceiver is a free data retrieval call binding the contract method 0xf4e638be.
+//
+// Solidity: function costReceiver() view returns(address)
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43Session) CostReceiver() (common.Address, error) {
+	return _FeralfileExhibitionV43.Contract.CostReceiver(&_FeralfileExhibitionV43.CallOpts)
+}
+
+// CostReceiver is a free data retrieval call binding the contract method 0xf4e638be.
+//
+// Solidity: function costReceiver() view returns(address)
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43CallerSession) CostReceiver() (common.Address, error) {
+	return _FeralfileExhibitionV43.Contract.CostReceiver(&_FeralfileExhibitionV43.CallOpts)
+}
+
+// GetApproved is a free data retrieval call binding the contract method 0x081812fc.
+//
+// Solidity: function getApproved(uint256 tokenId) view returns(address)
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43Caller) GetApproved(opts *bind.CallOpts, tokenId *big.Int) (common.Address, error) {
+	var out []interface{}
+	err := _FeralfileExhibitionV43.contract.Call(opts, &out, "getApproved", tokenId)
+
+	if err != nil {
+		return *new(common.Address), err
+	}
+
+	out0 := *abi.ConvertType(out[0], new(common.Address)).(*common.Address)
+
+	return out0, err
+
+}
+
+// GetApproved is a free data retrieval call binding the contract method 0x081812fc.
+//
+// Solidity: function getApproved(uint256 tokenId) view returns(address)
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43Session) GetApproved(tokenId *big.Int) (common.Address, error) {
+	return _FeralfileExhibitionV43.Contract.GetApproved(&_FeralfileExhibitionV43.CallOpts, tokenId)
+}
+
+// GetApproved is a free data retrieval call binding the contract method 0x081812fc.
+//
+// Solidity: function getApproved(uint256 tokenId) view returns(address)
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43CallerSession) GetApproved(tokenId *big.Int) (common.Address, error) {
+	return _FeralfileExhibitionV43.Contract.GetApproved(&_FeralfileExhibitionV43.CallOpts, tokenId)
+}
+
+// GetArtwork is a free data retrieval call binding the contract method 0x167ddf6e.
+//
+// Solidity: function getArtwork(uint256 tokenId) view returns((uint256,uint256))
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43Caller) GetArtwork(opts *bind.CallOpts, tokenId *big.Int) (FeralfileExhibitionV4Artwork, error) {
+	var out []interface{}
+	err := _FeralfileExhibitionV43.contract.Call(opts, &out, "getArtwork", tokenId)
+
+	if err != nil {
+		return *new(FeralfileExhibitionV4Artwork), err
+	}
+
+	out0 := *abi.ConvertType(out[0], new(FeralfileExhibitionV4Artwork)).(*FeralfileExhibitionV4Artwork)
+
+	return out0, err
+
+}
+
+// GetArtwork is a free data retrieval call binding the contract method 0x167ddf6e.
+//
+// Solidity: function getArtwork(uint256 tokenId) view returns((uint256,uint256))
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43Session) GetArtwork(tokenId *big.Int) (FeralfileExhibitionV4Artwork, error) {
+	return _FeralfileExhibitionV43.Contract.GetArtwork(&_FeralfileExhibitionV43.CallOpts, tokenId)
+}
+
+// GetArtwork is a free data retrieval call binding the contract method 0x167ddf6e.
+//
+// Solidity: function getArtwork(uint256 tokenId) view returns((uint256,uint256))
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43CallerSession) GetArtwork(tokenId *big.Int) (FeralfileExhibitionV4Artwork, error) {
+	return _FeralfileExhibitionV43.Contract.GetArtwork(&_FeralfileExhibitionV43.CallOpts, tokenId)
+}
+
+// IsApprovedForAll is a free data retrieval call binding the contract method 0xe985e9c5.
+//
+// Solidity: function isApprovedForAll(address owner, address operator) view returns(bool)
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43Caller) IsApprovedForAll(opts *bind.CallOpts, owner common.Address, operator common.Address) (bool, error) {
+	var out []interface{}
+	err := _FeralfileExhibitionV43.contract.Call(opts, &out, "isApprovedForAll", owner, operator)
+
+	if err != nil {
+		return *new(bool), err
+	}
+
+	out0 := *abi.ConvertType(out[0], new(bool)).(*bool)
+
+	return out0, err
+
+}
+
+// IsApprovedForAll is a free data retrieval call binding the contract method 0xe985e9c5.
+//
+// Solidity: function isApprovedForAll(address owner, address operator) view returns(bool)
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43Session) IsApprovedForAll(owner common.Address, operator common.Address) (bool, error) {
+	return _FeralfileExhibitionV43.Contract.IsApprovedForAll(&_FeralfileExhibitionV43.CallOpts, owner, operator)
+}
+
+// IsApprovedForAll is a free data retrieval call binding the contract method 0xe985e9c5.
+//
+// Solidity: function isApprovedForAll(address owner, address operator) view returns(bool)
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43CallerSession) IsApprovedForAll(owner common.Address, operator common.Address) (bool, error) {
+	return _FeralfileExhibitionV43.Contract.IsApprovedForAll(&_FeralfileExhibitionV43.CallOpts, owner, operator)
+}
+
+// Mintable is a free data retrieval call binding the contract method 0x4bf365df.
+//
+// Solidity: function mintable() view returns(bool)
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43Caller) Mintable(opts *bind.CallOpts) (bool, error) {
+	var out []interface{}
+	err := _FeralfileExhibitionV43.contract.Call(opts, &out, "mintable")
+
+	if err != nil {
+		return *new(bool), err
+	}
+
+	out0 := *abi.ConvertType(out[0], new(bool)).(*bool)
+
+	return out0, err
+
+}
+
+// Mintable is a free data retrieval call binding the contract method 0x4bf365df.
+//
+// Solidity: function mintable() view returns(bool)
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43Session) Mintable() (bool, error) {
+	return _FeralfileExhibitionV43.Contract.Mintable(&_FeralfileExhibitionV43.CallOpts)
+}
+
+// Mintable is a free data retrieval call binding the contract method 0x4bf365df.
+//
+// Solidity: function mintable() view returns(bool)
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43CallerSession) Mintable() (bool, error) {
+	return _FeralfileExhibitionV43.Contract.Mintable(&_FeralfileExhibitionV43.CallOpts)
+}
+
+// Name is a free data retrieval call binding the contract method 0x06fdde03.
+//
+// Solidity: function name() view returns(string)
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43Caller) Name(opts *bind.CallOpts) (string, error) {
+	var out []interface{}
+	err := _FeralfileExhibitionV43.contract.Call(opts, &out, "name")
+
+	if err != nil {
+		return *new(string), err
+	}
+
+	out0 := *abi.ConvertType(out[0], new(string)).(*string)
+
+	return out0, err
+
+}
+
+// Name is a free data retrieval call binding the contract method 0x06fdde03.
+//
+// Solidity: function name() view returns(string)
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43Session) Name() (string, error) {
+	return _FeralfileExhibitionV43.Contract.Name(&_FeralfileExhibitionV43.CallOpts)
+}
+
+// Name is a free data retrieval call binding the contract method 0x06fdde03.
+//
+// Solidity: function name() view returns(string)
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43CallerSession) Name() (string, error) {
+	return _FeralfileExhibitionV43.Contract.Name(&_FeralfileExhibitionV43.CallOpts)
+}
+
+// Owner is a free data retrieval call binding the contract method 0x8da5cb5b.
+//
+// Solidity: function owner() view returns(address)
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43Caller) Owner(opts *bind.CallOpts) (common.Address, error) {
+	var out []interface{}
+	err := _FeralfileExhibitionV43.contract.Call(opts, &out, "owner")
+
+	if err != nil {
+		return *new(common.Address), err
+	}
+
+	out0 := *abi.ConvertType(out[0], new(common.Address)).(*common.Address)
+
+	return out0, err
+
+}
+
+// Owner is a free data retrieval call binding the contract method 0x8da5cb5b.
+//
+// Solidity: function owner() view returns(address)
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43Session) Owner() (common.Address, error) {
+	return _FeralfileExhibitionV43.Contract.Owner(&_FeralfileExhibitionV43.CallOpts)
+}
+
+// Owner is a free data retrieval call binding the contract method 0x8da5cb5b.
+//
+// Solidity: function owner() view returns(address)
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43CallerSession) Owner() (common.Address, error) {
+	return _FeralfileExhibitionV43.Contract.Owner(&_FeralfileExhibitionV43.CallOpts)
+}
+
+// OwnerOf is a free data retrieval call binding the contract method 0x6352211e.
+//
+// Solidity: function ownerOf(uint256 tokenId) view returns(address)
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43Caller) OwnerOf(opts *bind.CallOpts, tokenId *big.Int) (common.Address, error) {
+	var out []interface{}
+	err := _FeralfileExhibitionV43.contract.Call(opts, &out, "ownerOf", tokenId)
+
+	if err != nil {
+		return *new(common.Address), err
+	}
+
+	out0 := *abi.ConvertType(out[0], new(common.Address)).(*common.Address)
+
+	return out0, err
+
+}
+
+// OwnerOf is a free data retrieval call binding the contract method 0x6352211e.
+//
+// Solidity: function ownerOf(uint256 tokenId) view returns(address)
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43Session) OwnerOf(tokenId *big.Int) (common.Address, error) {
+	return _FeralfileExhibitionV43.Contract.OwnerOf(&_FeralfileExhibitionV43.CallOpts, tokenId)
+}
+
+// OwnerOf is a free data retrieval call binding the contract method 0x6352211e.
+//
+// Solidity: function ownerOf(uint256 tokenId) view returns(address)
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43CallerSession) OwnerOf(tokenId *big.Int) (common.Address, error) {
+	return _FeralfileExhibitionV43.Contract.OwnerOf(&_FeralfileExhibitionV43.CallOpts, tokenId)
+}
+
+// Selling is a free data retrieval call binding the contract method 0x23aed228.
+//
+// Solidity: function selling() view returns(bool)
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43Caller) Selling(opts *bind.CallOpts) (bool, error) {
+	var out []interface{}
+	err := _FeralfileExhibitionV43.contract.Call(opts, &out, "selling")
+
+	if err != nil {
+		return *new(bool), err
+	}
+
+	out0 := *abi.ConvertType(out[0], new(bool)).(*bool)
+
+	return out0, err
+
+}
+
+// Selling is a free data retrieval call binding the contract method 0x23aed228.
+//
+// Solidity: function selling() view returns(bool)
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43Session) Selling() (bool, error) {
+	return _FeralfileExhibitionV43.Contract.Selling(&_FeralfileExhibitionV43.CallOpts)
+}
+
+// Selling is a free data retrieval call binding the contract method 0x23aed228.
+//
+// Solidity: function selling() view returns(bool)
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43CallerSession) Selling() (bool, error) {
+	return _FeralfileExhibitionV43.Contract.Selling(&_FeralfileExhibitionV43.CallOpts)
+}
+
+// SeriesMaxSupply is a free data retrieval call binding the contract method 0xeb5c60f2.
+//
+// Solidity: function seriesMaxSupply(uint256 seriesId) view returns(uint256)
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43Caller) SeriesMaxSupply(opts *bind.CallOpts, seriesId *big.Int) (*big.Int, error) {
+	var out []interface{}
+	err := _FeralfileExhibitionV43.contract.Call(opts, &out, "seriesMaxSupply", seriesId)
+
+	if err != nil {
+		return *new(*big.Int), err
+	}
+
+	out0 := *abi.ConvertType(out[0], new(*big.Int)).(**big.Int)
+
+	return out0, err
+
+}
+
+// SeriesMaxSupply is a free data retrieval call binding the contract method 0xeb5c60f2.
+//
+// Solidity: function seriesMaxSupply(uint256 seriesId) view returns(uint256)
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43Session) SeriesMaxSupply(seriesId *big.Int) (*big.Int, error) {
+	return _FeralfileExhibitionV43.Contract.SeriesMaxSupply(&_FeralfileExhibitionV43.CallOpts, seriesId)
+}
+
+// SeriesMaxSupply is a free data retrieval call binding the contract method 0xeb5c60f2.
+//
+// Solidity: function seriesMaxSupply(uint256 seriesId) view returns(uint256)
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43CallerSession) SeriesMaxSupply(seriesId *big.Int) (*big.Int, error) {
+	return _FeralfileExhibitionV43.Contract.SeriesMaxSupply(&_FeralfileExhibitionV43.CallOpts, seriesId)
+}
+
+// SeriesTotalSupply is a free data retrieval call binding the contract method 0x7f06ee06.
+//
+// Solidity: function seriesTotalSupply(uint256 seriesId) view returns(uint256)
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43Caller) SeriesTotalSupply(opts *bind.CallOpts, seriesId *big.Int) (*big.Int, error) {
+	var out []interface{}
+	err := _FeralfileExhibitionV43.contract.Call(opts, &out, "seriesTotalSupply", seriesId)
+
+	if err != nil {
+		return *new(*big.Int), err
+	}
+
+	out0 := *abi.ConvertType(out[0], new(*big.Int)).(**big.Int)
+
+	return out0, err
+
+}
+
+// SeriesTotalSupply is a free data retrieval call binding the contract method 0x7f06ee06.
+//
+// Solidity: function seriesTotalSupply(uint256 seriesId) view returns(uint256)
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43Session) SeriesTotalSupply(seriesId *big.Int) (*big.Int, error) {
+	return _FeralfileExhibitionV43.Contract.SeriesTotalSupply(&_FeralfileExhibitionV43.CallOpts, seriesId)
+}
+
+// SeriesTotalSupply is a free data retrieval call binding the contract method 0x7f06ee06.
+//
+// Solidity: function seriesTotalSupply(uint256 seriesId) view returns(uint256)
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43CallerSession) SeriesTotalSupply(seriesId *big.Int) (*big.Int, error) {
+	return _FeralfileExhibitionV43.Contract.SeriesTotalSupply(&_FeralfileExhibitionV43.CallOpts, seriesId)
+}
+
+// Signer is a free data retrieval call binding the contract method 0x238ac933.
+//
+// Solidity: function signer() view returns(address)
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43Caller) Signer(opts *bind.CallOpts) (common.Address, error) {
+	var out []interface{}
+	err := _FeralfileExhibitionV43.contract.Call(opts, &out, "signer")
+
+	if err != nil {
+		return *new(common.Address), err
+	}
+
+	out0 := *abi.ConvertType(out[0], new(common.Address)).(*common.Address)
+
+	return out0, err
+
+}
+
+// Signer is a free data retrieval call binding the contract method 0x238ac933.
+//
+// Solidity: function signer() view returns(address)
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43Session) Signer() (common.Address, error) {
+	return _FeralfileExhibitionV43.Contract.Signer(&_FeralfileExhibitionV43.CallOpts)
+}
+
+// Signer is a free data retrieval call binding the contract method 0x238ac933.
+//
+// Solidity: function signer() view returns(address)
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43CallerSession) Signer() (common.Address, error) {
+	return _FeralfileExhibitionV43.Contract.Signer(&_FeralfileExhibitionV43.CallOpts)
+}
+
+// SupportsInterface is a free data retrieval call binding the contract method 0x01ffc9a7.
+//
+// Solidity: function supportsInterface(bytes4 interfaceId) view returns(bool)
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43Caller) SupportsInterface(opts *bind.CallOpts, interfaceId [4]byte) (bool, error) {
+	var out []interface{}
+	err := _FeralfileExhibitionV43.contract.Call(opts, &out, "supportsInterface", interfaceId)
+
+	if err != nil {
+		return *new(bool), err
+	}
+
+	out0 := *abi.ConvertType(out[0], new(bool)).(*bool)
+
+	return out0, err
+
+}
+
+// SupportsInterface is a free data retrieval call binding the contract method 0x01ffc9a7.
+//
+// Solidity: function supportsInterface(bytes4 interfaceId) view returns(bool)
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43Session) SupportsInterface(interfaceId [4]byte) (bool, error) {
+	return _FeralfileExhibitionV43.Contract.SupportsInterface(&_FeralfileExhibitionV43.CallOpts, interfaceId)
+}
+
+// SupportsInterface is a free data retrieval call binding the contract method 0x01ffc9a7.
+//
+// Solidity: function supportsInterface(bytes4 interfaceId) view returns(bool)
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43CallerSession) SupportsInterface(interfaceId [4]byte) (bool, error) {
+	return _FeralfileExhibitionV43.Contract.SupportsInterface(&_FeralfileExhibitionV43.CallOpts, interfaceId)
+}
+
+// Symbol is a free data retrieval call binding the contract method 0x95d89b41.
+//
+// Solidity: function symbol() view returns(string)
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43Caller) Symbol(opts *bind.CallOpts) (string, error) {
+	var out []interface{}
+	err := _FeralfileExhibitionV43.contract.Call(opts, &out, "symbol")
+
+	if err != nil {
+		return *new(string), err
+	}
+
+	out0 := *abi.ConvertType(out[0], new(string)).(*string)
+
+	return out0, err
+
+}
+
+// Symbol is a free data retrieval call binding the contract method 0x95d89b41.
+//
+// Solidity: function symbol() view returns(string)
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43Session) Symbol() (string, error) {
+	return _FeralfileExhibitionV43.Contract.Symbol(&_FeralfileExhibitionV43.CallOpts)
+}
+
+// Symbol is a free data retrieval call binding the contract method 0x95d89b41.
+//
+// Solidity: function symbol() view returns(string)
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43CallerSession) Symbol() (string, error) {
+	return _FeralfileExhibitionV43.Contract.Symbol(&_FeralfileExhibitionV43.CallOpts)
+}
+
+// TokenBaseURI is a free data retrieval call binding the contract method 0x4e99b800.
+//
+// Solidity: function tokenBaseURI() view returns(string)
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43Caller) TokenBaseURI(opts *bind.CallOpts) (string, error) {
+	var out []interface{}
+	err := _FeralfileExhibitionV43.contract.Call(opts, &out, "tokenBaseURI")
+
+	if err != nil {
+		return *new(string), err
+	}
+
+	out0 := *abi.ConvertType(out[0], new(string)).(*string)
+
+	return out0, err
+
+}
+
+// TokenBaseURI is a free data retrieval call binding the contract method 0x4e99b800.
+//
+// Solidity: function tokenBaseURI() view returns(string)
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43Session) TokenBaseURI() (string, error) {
+	return _FeralfileExhibitionV43.Contract.TokenBaseURI(&_FeralfileExhibitionV43.CallOpts)
+}
+
+// TokenBaseURI is a free data retrieval call binding the contract method 0x4e99b800.
+//
+// Solidity: function tokenBaseURI() view returns(string)
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43CallerSession) TokenBaseURI() (string, error) {
+	return _FeralfileExhibitionV43.Contract.TokenBaseURI(&_FeralfileExhibitionV43.CallOpts)
+}
+
+// TokenOfOwnerByIndex is a free data retrieval call binding the contract method 0x2f745c59.
+//
+// Solidity: function tokenOfOwnerByIndex(address owner, uint256 index) view returns(uint256)
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43Caller) TokenOfOwnerByIndex(opts *bind.CallOpts, owner common.Address, index *big.Int) (*big.Int, error) {
+	var out []interface{}
+	err := _FeralfileExhibitionV43.contract.Call(opts, &out, "tokenOfOwnerByIndex", owner, index)
+
+	if err != nil {
+		return *new(*big.Int), err
+	}
+
+	out0 := *abi.ConvertType(out[0], new(*big.Int)).(**big.Int)
+
+	return out0, err
+
+}
+
+// TokenOfOwnerByIndex is a free data retrieval call binding the contract method 0x2f745c59.
+//
+// Solidity: function tokenOfOwnerByIndex(address owner, uint256 index) view returns(uint256)
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43Session) TokenOfOwnerByIndex(owner common.Address, index *big.Int) (*big.Int, error) {
+	return _FeralfileExhibitionV43.Contract.TokenOfOwnerByIndex(&_FeralfileExhibitionV43.CallOpts, owner, index)
+}
+
+// TokenOfOwnerByIndex is a free data retrieval call binding the contract method 0x2f745c59.
+//
+// Solidity: function tokenOfOwnerByIndex(address owner, uint256 index) view returns(uint256)
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43CallerSession) TokenOfOwnerByIndex(owner common.Address, index *big.Int) (*big.Int, error) {
+	return _FeralfileExhibitionV43.Contract.TokenOfOwnerByIndex(&_FeralfileExhibitionV43.CallOpts, owner, index)
+}
+
+// TokenURI is a free data retrieval call binding the contract method 0xc87b56dd.
+//
+// Solidity: function tokenURI(uint256 tokenId) view returns(string)
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43Caller) TokenURI(opts *bind.CallOpts, tokenId *big.Int) (string, error) {
+	var out []interface{}
+	err := _FeralfileExhibitionV43.contract.Call(opts, &out, "tokenURI", tokenId)
+
+	if err != nil {
+		return *new(string), err
+	}
+
+	out0 := *abi.ConvertType(out[0], new(string)).(*string)
+
+	return out0, err
+
+}
+
+// TokenURI is a free data retrieval call binding the contract method 0xc87b56dd.
+//
+// Solidity: function tokenURI(uint256 tokenId) view returns(string)
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43Session) TokenURI(tokenId *big.Int) (string, error) {
+	return _FeralfileExhibitionV43.Contract.TokenURI(&_FeralfileExhibitionV43.CallOpts, tokenId)
+}
+
+// TokenURI is a free data retrieval call binding the contract method 0xc87b56dd.
+//
+// Solidity: function tokenURI(uint256 tokenId) view returns(string)
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43CallerSession) TokenURI(tokenId *big.Int) (string, error) {
+	return _FeralfileExhibitionV43.Contract.TokenURI(&_FeralfileExhibitionV43.CallOpts, tokenId)
+}
+
+// TokensOfOwner is a free data retrieval call binding the contract method 0x8462151c.
+//
+// Solidity: function tokensOfOwner(address owner) view returns(uint256[])
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43Caller) TokensOfOwner(opts *bind.CallOpts, owner common.Address) ([]*big.Int, error) {
+	var out []interface{}
+	err := _FeralfileExhibitionV43.contract.Call(opts, &out, "tokensOfOwner", owner)
+
+	if err != nil {
+		return *new([]*big.Int), err
+	}
+
+	out0 := *abi.ConvertType(out[0], new([]*big.Int)).(*[]*big.Int)
+
+	return out0, err
+
+}
+
+// TokensOfOwner is a free data retrieval call binding the contract method 0x8462151c.
+//
+// Solidity: function tokensOfOwner(address owner) view returns(uint256[])
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43Session) TokensOfOwner(owner common.Address) ([]*big.Int, error) {
+	return _FeralfileExhibitionV43.Contract.TokensOfOwner(&_FeralfileExhibitionV43.CallOpts, owner)
+}
+
+// TokensOfOwner is a free data retrieval call binding the contract method 0x8462151c.
+//
+// Solidity: function tokensOfOwner(address owner) view returns(uint256[])
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43CallerSession) TokensOfOwner(owner common.Address) ([]*big.Int, error) {
+	return _FeralfileExhibitionV43.Contract.TokensOfOwner(&_FeralfileExhibitionV43.CallOpts, owner)
+}
+
+// TotalSupply is a free data retrieval call binding the contract method 0x18160ddd.
+//
+// Solidity: function totalSupply() view returns(uint256)
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43Caller) TotalSupply(opts *bind.CallOpts) (*big.Int, error) {
+	var out []interface{}
+	err := _FeralfileExhibitionV43.contract.Call(opts, &out, "totalSupply")
+
+	if err != nil {
+		return *new(*big.Int), err
+	}
+
+	out0 := *abi.ConvertType(out[0], new(*big.Int)).(**big.Int)
+
+	return out0, err
+
+}
+
+// TotalSupply is a free data retrieval call binding the contract method 0x18160ddd.
+//
+// Solidity: function totalSupply() view returns(uint256)
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43Session) TotalSupply() (*big.Int, error) {
+	return _FeralfileExhibitionV43.Contract.TotalSupply(&_FeralfileExhibitionV43.CallOpts)
+}
+
+// TotalSupply is a free data retrieval call binding the contract method 0x18160ddd.
+//
+// Solidity: function totalSupply() view returns(uint256)
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43CallerSession) TotalSupply() (*big.Int, error) {
+	return _FeralfileExhibitionV43.Contract.TotalSupply(&_FeralfileExhibitionV43.CallOpts)
+}
+
+// Trustees is a free data retrieval call binding the contract method 0xeee608a4.
+//
+// Solidity: function trustees(address ) view returns(bool)
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43Caller) Trustees(opts *bind.CallOpts, arg0 common.Address) (bool, error) {
+	var out []interface{}
+	err := _FeralfileExhibitionV43.contract.Call(opts, &out, "trustees", arg0)
+
+	if err != nil {
+		return *new(bool), err
+	}
+
+	out0 := *abi.ConvertType(out[0], new(bool)).(*bool)
+
+	return out0, err
+
+}
+
+// Trustees is a free data retrieval call binding the contract method 0xeee608a4.
+//
+// Solidity: function trustees(address ) view returns(bool)
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43Session) Trustees(arg0 common.Address) (bool, error) {
+	return _FeralfileExhibitionV43.Contract.Trustees(&_FeralfileExhibitionV43.CallOpts, arg0)
+}
+
+// Trustees is a free data retrieval call binding the contract method 0xeee608a4.
+//
+// Solidity: function trustees(address ) view returns(bool)
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43CallerSession) Trustees(arg0 common.Address) (bool, error) {
+	return _FeralfileExhibitionV43.Contract.Trustees(&_FeralfileExhibitionV43.CallOpts, arg0)
+}
+
+// Vault is a free data retrieval call binding the contract method 0xfbfa77cf.
+//
+// Solidity: function vault() view returns(address)
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43Caller) Vault(opts *bind.CallOpts) (common.Address, error) {
+	var out []interface{}
+	err := _FeralfileExhibitionV43.contract.Call(opts, &out, "vault")
+
+	if err != nil {
+		return *new(common.Address), err
+	}
+
+	out0 := *abi.ConvertType(out[0], new(common.Address)).(*common.Address)
+
+	return out0, err
+
+}
+
+// Vault is a free data retrieval call binding the contract method 0xfbfa77cf.
+//
+// Solidity: function vault() view returns(address)
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43Session) Vault() (common.Address, error) {
+	return _FeralfileExhibitionV43.Contract.Vault(&_FeralfileExhibitionV43.CallOpts)
+}
+
+// Vault is a free data retrieval call binding the contract method 0xfbfa77cf.
+//
+// Solidity: function vault() view returns(address)
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43CallerSession) Vault() (common.Address, error) {
+	return _FeralfileExhibitionV43.Contract.Vault(&_FeralfileExhibitionV43.CallOpts)
+}
+
+// AddTrustee is a paid mutator transaction binding the contract method 0xdc78ac1c.
+//
+// Solidity: function addTrustee(address _trustee) returns()
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43Transactor) AddTrustee(opts *bind.TransactOpts, _trustee common.Address) (*types.Transaction, error) {
+	return _FeralfileExhibitionV43.contract.Transact(opts, "addTrustee", _trustee)
+}
+
+// AddTrustee is a paid mutator transaction binding the contract method 0xdc78ac1c.
+//
+// Solidity: function addTrustee(address _trustee) returns()
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43Session) AddTrustee(_trustee common.Address) (*types.Transaction, error) {
+	return _FeralfileExhibitionV43.Contract.AddTrustee(&_FeralfileExhibitionV43.TransactOpts, _trustee)
+}
+
+// AddTrustee is a paid mutator transaction binding the contract method 0xdc78ac1c.
+//
+// Solidity: function addTrustee(address _trustee) returns()
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43TransactorSession) AddTrustee(_trustee common.Address) (*types.Transaction, error) {
+	return _FeralfileExhibitionV43.Contract.AddTrustee(&_FeralfileExhibitionV43.TransactOpts, _trustee)
+}
+
+// Approve is a paid mutator transaction binding the contract method 0x095ea7b3.
+//
+// Solidity: function approve(address operator, uint256 tokenId) returns()
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43Transactor) Approve(opts *bind.TransactOpts, operator common.Address, tokenId *big.Int) (*types.Transaction, error) {
+	return _FeralfileExhibitionV43.contract.Transact(opts, "approve", operator, tokenId)
+}
+
+// Approve is a paid mutator transaction binding the contract method 0x095ea7b3.
+//
+// Solidity: function approve(address operator, uint256 tokenId) returns()
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43Session) Approve(operator common.Address, tokenId *big.Int) (*types.Transaction, error) {
+	return _FeralfileExhibitionV43.Contract.Approve(&_FeralfileExhibitionV43.TransactOpts, operator, tokenId)
+}
+
+// Approve is a paid mutator transaction binding the contract method 0x095ea7b3.
+//
+// Solidity: function approve(address operator, uint256 tokenId) returns()
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43TransactorSession) Approve(operator common.Address, tokenId *big.Int) (*types.Transaction, error) {
+	return _FeralfileExhibitionV43.Contract.Approve(&_FeralfileExhibitionV43.TransactOpts, operator, tokenId)
+}
+
+// BurnArtworks is a paid mutator transaction binding the contract method 0x21fe0c64.
+//
+// Solidity: function burnArtworks(uint256[] tokenIds) returns()
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43Transactor) BurnArtworks(opts *bind.TransactOpts, tokenIds []*big.Int) (*types.Transaction, error) {
+	return _FeralfileExhibitionV43.contract.Transact(opts, "burnArtworks", tokenIds)
+}
+
+// BurnArtworks is a paid mutator transaction binding the contract method 0x21fe0c64.
+//
+// Solidity: function burnArtworks(uint256[] tokenIds) returns()
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43Session) BurnArtworks(tokenIds []*big.Int) (*types.Transaction, error) {
+	return _FeralfileExhibitionV43.Contract.BurnArtworks(&_FeralfileExhibitionV43.TransactOpts, tokenIds)
+}
+
+// BurnArtworks is a paid mutator transaction binding the contract method 0x21fe0c64.
+//
+// Solidity: function burnArtworks(uint256[] tokenIds) returns()
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43TransactorSession) BurnArtworks(tokenIds []*big.Int) (*types.Transaction, error) {
+	return _FeralfileExhibitionV43.Contract.BurnArtworks(&_FeralfileExhibitionV43.TransactOpts, tokenIds)
+}
+
+// BuyArtworks is a paid mutator transaction binding the contract method 0x2977e4b3.
+//
+// Solidity: function buyArtworks(bytes32 r_, bytes32 s_, uint8 v_, (uint256,uint256,uint256,address,uint256[],(address,uint256)[][],bool) saleData_) payable returns()
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43Transactor) BuyArtworks(opts *bind.TransactOpts, r_ [32]byte, s_ [32]byte, v_ uint8, saleData_ IFeralfileSaleDataSaleData) (*types.Transaction, error) {
+	return _FeralfileExhibitionV43.contract.Transact(opts, "buyArtworks", r_, s_, v_, saleData_)
+}
+
+// BuyArtworks is a paid mutator transaction binding the contract method 0x2977e4b3.
+//
+// Solidity: function buyArtworks(bytes32 r_, bytes32 s_, uint8 v_, (uint256,uint256,uint256,address,uint256[],(address,uint256)[][],bool) saleData_) payable returns()
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43Session) BuyArtworks(r_ [32]byte, s_ [32]byte, v_ uint8, saleData_ IFeralfileSaleDataSaleData) (*types.Transaction, error) {
+	return _FeralfileExhibitionV43.Contract.BuyArtworks(&_FeralfileExhibitionV43.TransactOpts, r_, s_, v_, saleData_)
+}
+
+// BuyArtworks is a paid mutator transaction binding the contract method 0x2977e4b3.
+//
+// Solidity: function buyArtworks(bytes32 r_, bytes32 s_, uint8 v_, (uint256,uint256,uint256,address,uint256[],(address,uint256)[][],bool) saleData_) payable returns()
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43TransactorSession) BuyArtworks(r_ [32]byte, s_ [32]byte, v_ uint8, saleData_ IFeralfileSaleDataSaleData) (*types.Transaction, error) {
+	return _FeralfileExhibitionV43.Contract.BuyArtworks(&_FeralfileExhibitionV43.TransactOpts, r_, s_, v_, saleData_)
+}
+
+// MergeArtworks is a paid mutator transaction binding the contract method 0xc3714c69.
+//
+// Solidity: function mergeArtworks(uint256[] tokenIds) returns()
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43Transactor) MergeArtworks(opts *bind.TransactOpts, tokenIds []*big.Int) (*types.Transaction, error) {
+	return _FeralfileExhibitionV43.contract.Transact(opts, "mergeArtworks", tokenIds)
+}
+
+// MergeArtworks is a paid mutator transaction binding the contract method 0xc3714c69.
+//
+// Solidity: function mergeArtworks(uint256[] tokenIds) returns()
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43Session) MergeArtworks(tokenIds []*big.Int) (*types.Transaction, error) {
+	return _FeralfileExhibitionV43.Contract.MergeArtworks(&_FeralfileExhibitionV43.TransactOpts, tokenIds)
+}
+
+// MergeArtworks is a paid mutator transaction binding the contract method 0xc3714c69.
+//
+// Solidity: function mergeArtworks(uint256[] tokenIds) returns()
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43TransactorSession) MergeArtworks(tokenIds []*big.Int) (*types.Transaction, error) {
+	return _FeralfileExhibitionV43.Contract.MergeArtworks(&_FeralfileExhibitionV43.TransactOpts, tokenIds)
+}
+
+// MintArtworks is a paid mutator transaction binding the contract method 0x8cba1c67.
+//
+// Solidity: function mintArtworks((uint256,uint256,address)[] data) returns()
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43Transactor) MintArtworks(opts *bind.TransactOpts, data []FeralfileExhibitionV4MintData) (*types.Transaction, error) {
+	return _FeralfileExhibitionV43.contract.Transact(opts, "mintArtworks", data)
+}
+
+// MintArtworks is a paid mutator transaction binding the contract method 0x8cba1c67.
+//
+// Solidity: function mintArtworks((uint256,uint256,address)[] data) returns()
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43Session) MintArtworks(data []FeralfileExhibitionV4MintData) (*types.Transaction, error) {
+	return _FeralfileExhibitionV43.Contract.MintArtworks(&_FeralfileExhibitionV43.TransactOpts, data)
+}
+
+// MintArtworks is a paid mutator transaction binding the contract method 0x8cba1c67.
+//
+// Solidity: function mintArtworks((uint256,uint256,address)[] data) returns()
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43TransactorSession) MintArtworks(data []FeralfileExhibitionV4MintData) (*types.Transaction, error) {
+	return _FeralfileExhibitionV43.Contract.MintArtworks(&_FeralfileExhibitionV43.TransactOpts, data)
+}
+
+// PauseSale is a paid mutator transaction binding the contract method 0x55367ba9.
+//
+// Solidity: function pauseSale() returns()
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43Transactor) PauseSale(opts *bind.TransactOpts) (*types.Transaction, error) {
+	return _FeralfileExhibitionV43.contract.Transact(opts, "pauseSale")
+}
+
+// PauseSale is a paid mutator transaction binding the contract method 0x55367ba9.
+//
+// Solidity: function pauseSale() returns()
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43Session) PauseSale() (*types.Transaction, error) {
+	return _FeralfileExhibitionV43.Contract.PauseSale(&_FeralfileExhibitionV43.TransactOpts)
+}
+
+// PauseSale is a paid mutator transaction binding the contract method 0x55367ba9.
+//
+// Solidity: function pauseSale() returns()
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43TransactorSession) PauseSale() (*types.Transaction, error) {
+	return _FeralfileExhibitionV43.Contract.PauseSale(&_FeralfileExhibitionV43.TransactOpts)
+}
+
+// RemoveTrustee is a paid mutator transaction binding the contract method 0x03120506.
+//
+// Solidity: function removeTrustee(address _trustee) returns()
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43Transactor) RemoveTrustee(opts *bind.TransactOpts, _trustee common.Address) (*types.Transaction, error) {
+	return _FeralfileExhibitionV43.contract.Transact(opts, "removeTrustee", _trustee)
+}
+
+// RemoveTrustee is a paid mutator transaction binding the contract method 0x03120506.
+//
+// Solidity: function removeTrustee(address _trustee) returns()
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43Session) RemoveTrustee(_trustee common.Address) (*types.Transaction, error) {
+	return _FeralfileExhibitionV43.Contract.RemoveTrustee(&_FeralfileExhibitionV43.TransactOpts, _trustee)
+}
+
+// RemoveTrustee is a paid mutator transaction binding the contract method 0x03120506.
+//
+// Solidity: function removeTrustee(address _trustee) returns()
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43TransactorSession) RemoveTrustee(_trustee common.Address) (*types.Transaction, error) {
+	return _FeralfileExhibitionV43.Contract.RemoveTrustee(&_FeralfileExhibitionV43.TransactOpts, _trustee)
+}
+
+// RenounceOwnership is a paid mutator transaction binding the contract method 0x715018a6.
+//
+// Solidity: function renounceOwnership() returns()
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43Transactor) RenounceOwnership(opts *bind.TransactOpts) (*types.Transaction, error) {
+	return _FeralfileExhibitionV43.contract.Transact(opts, "renounceOwnership")
+}
+
+// RenounceOwnership is a paid mutator transaction binding the contract method 0x715018a6.
+//
+// Solidity: function renounceOwnership() returns()
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43Session) RenounceOwnership() (*types.Transaction, error) {
+	return _FeralfileExhibitionV43.Contract.RenounceOwnership(&_FeralfileExhibitionV43.TransactOpts)
+}
+
+// RenounceOwnership is a paid mutator transaction binding the contract method 0x715018a6.
+//
+// Solidity: function renounceOwnership() returns()
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43TransactorSession) RenounceOwnership() (*types.Transaction, error) {
+	return _FeralfileExhibitionV43.Contract.RenounceOwnership(&_FeralfileExhibitionV43.TransactOpts)
+}
+
+// ReplaceAdvanceAddresses is a paid mutator transaction binding the contract method 0x41a5626a.
+//
+// Solidity: function replaceAdvanceAddresses(address[] oldAddresses_, address[] newAddresses_) returns()
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43Transactor) ReplaceAdvanceAddresses(opts *bind.TransactOpts, oldAddresses_ []common.Address, newAddresses_ []common.Address) (*types.Transaction, error) {
+	return _FeralfileExhibitionV43.contract.Transact(opts, "replaceAdvanceAddresses", oldAddresses_, newAddresses_)
+}
+
+// ReplaceAdvanceAddresses is a paid mutator transaction binding the contract method 0x41a5626a.
+//
+// Solidity: function replaceAdvanceAddresses(address[] oldAddresses_, address[] newAddresses_) returns()
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43Session) ReplaceAdvanceAddresses(oldAddresses_ []common.Address, newAddresses_ []common.Address) (*types.Transaction, error) {
+	return _FeralfileExhibitionV43.Contract.ReplaceAdvanceAddresses(&_FeralfileExhibitionV43.TransactOpts, oldAddresses_, newAddresses_)
+}
+
+// ReplaceAdvanceAddresses is a paid mutator transaction binding the contract method 0x41a5626a.
+//
+// Solidity: function replaceAdvanceAddresses(address[] oldAddresses_, address[] newAddresses_) returns()
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43TransactorSession) ReplaceAdvanceAddresses(oldAddresses_ []common.Address, newAddresses_ []common.Address) (*types.Transaction, error) {
+	return _FeralfileExhibitionV43.Contract.ReplaceAdvanceAddresses(&_FeralfileExhibitionV43.TransactOpts, oldAddresses_, newAddresses_)
+}
+
+// ResumeSale is a paid mutator transaction binding the contract method 0x33e364cb.
+//
+// Solidity: function resumeSale() returns()
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43Transactor) ResumeSale(opts *bind.TransactOpts) (*types.Transaction, error) {
+	return _FeralfileExhibitionV43.contract.Transact(opts, "resumeSale")
+}
+
+// ResumeSale is a paid mutator transaction binding the contract method 0x33e364cb.
+//
+// Solidity: function resumeSale() returns()
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43Session) ResumeSale() (*types.Transaction, error) {
+	return _FeralfileExhibitionV43.Contract.ResumeSale(&_FeralfileExhibitionV43.TransactOpts)
+}
+
+// ResumeSale is a paid mutator transaction binding the contract method 0x33e364cb.
+//
+// Solidity: function resumeSale() returns()
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43TransactorSession) ResumeSale() (*types.Transaction, error) {
+	return _FeralfileExhibitionV43.Contract.ResumeSale(&_FeralfileExhibitionV43.TransactOpts)
+}
+
+// SafeTransferFrom is a paid mutator transaction binding the contract method 0x42842e0e.
+//
+// Solidity: function safeTransferFrom(address from, address to, uint256 tokenId) returns()
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43Transactor) SafeTransferFrom(opts *bind.TransactOpts, from common.Address, to common.Address, tokenId *big.Int) (*types.Transaction, error) {
+	return _FeralfileExhibitionV43.contract.Transact(opts, "safeTransferFrom", from, to, tokenId)
+}
+
+// SafeTransferFrom is a paid mutator transaction binding the contract method 0x42842e0e.
+//
+// Solidity: function safeTransferFrom(address from, address to, uint256 tokenId) returns()
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43Session) SafeTransferFrom(from common.Address, to common.Address, tokenId *big.Int) (*types.Transaction, error) {
+	return _FeralfileExhibitionV43.Contract.SafeTransferFrom(&_FeralfileExhibitionV43.TransactOpts, from, to, tokenId)
+}
+
+// SafeTransferFrom is a paid mutator transaction binding the contract method 0x42842e0e.
+//
+// Solidity: function safeTransferFrom(address from, address to, uint256 tokenId) returns()
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43TransactorSession) SafeTransferFrom(from common.Address, to common.Address, tokenId *big.Int) (*types.Transaction, error) {
+	return _FeralfileExhibitionV43.Contract.SafeTransferFrom(&_FeralfileExhibitionV43.TransactOpts, from, to, tokenId)
+}
+
+// SafeTransferFrom0 is a paid mutator transaction binding the contract method 0xb88d4fde.
+//
+// Solidity: function safeTransferFrom(address from, address to, uint256 tokenId, bytes data) returns()
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43Transactor) SafeTransferFrom0(opts *bind.TransactOpts, from common.Address, to common.Address, tokenId *big.Int, data []byte) (*types.Transaction, error) {
+	return _FeralfileExhibitionV43.contract.Transact(opts, "safeTransferFrom0", from, to, tokenId, data)
+}
+
+// SafeTransferFrom0 is a paid mutator transaction binding the contract method 0xb88d4fde.
+//
+// Solidity: function safeTransferFrom(address from, address to, uint256 tokenId, bytes data) returns()
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43Session) SafeTransferFrom0(from common.Address, to common.Address, tokenId *big.Int, data []byte) (*types.Transaction, error) {
+	return _FeralfileExhibitionV43.Contract.SafeTransferFrom0(&_FeralfileExhibitionV43.TransactOpts, from, to, tokenId, data)
+}
+
+// SafeTransferFrom0 is a paid mutator transaction binding the contract method 0xb88d4fde.
+//
+// Solidity: function safeTransferFrom(address from, address to, uint256 tokenId, bytes data) returns()
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43TransactorSession) SafeTransferFrom0(from common.Address, to common.Address, tokenId *big.Int, data []byte) (*types.Transaction, error) {
+	return _FeralfileExhibitionV43.Contract.SafeTransferFrom0(&_FeralfileExhibitionV43.TransactOpts, from, to, tokenId, data)
+}
+
+// SetAdvanceSetting is a paid mutator transaction binding the contract method 0x3c352b0d.
+//
+// Solidity: function setAdvanceSetting(address[] addresses_, uint256[] amounts_) returns()
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43Transactor) SetAdvanceSetting(opts *bind.TransactOpts, addresses_ []common.Address, amounts_ []*big.Int) (*types.Transaction, error) {
+	return _FeralfileExhibitionV43.contract.Transact(opts, "setAdvanceSetting", addresses_, amounts_)
+}
+
+// SetAdvanceSetting is a paid mutator transaction binding the contract method 0x3c352b0d.
+//
+// Solidity: function setAdvanceSetting(address[] addresses_, uint256[] amounts_) returns()
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43Session) SetAdvanceSetting(addresses_ []common.Address, amounts_ []*big.Int) (*types.Transaction, error) {
+	return _FeralfileExhibitionV43.Contract.SetAdvanceSetting(&_FeralfileExhibitionV43.TransactOpts, addresses_, amounts_)
+}
+
+// SetAdvanceSetting is a paid mutator transaction binding the contract method 0x3c352b0d.
+//
+// Solidity: function setAdvanceSetting(address[] addresses_, uint256[] amounts_) returns()
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43TransactorSession) SetAdvanceSetting(addresses_ []common.Address, amounts_ []*big.Int) (*types.Transaction, error) {
+	return _FeralfileExhibitionV43.Contract.SetAdvanceSetting(&_FeralfileExhibitionV43.TransactOpts, addresses_, amounts_)
+}
+
+// SetApprovalForAll is a paid mutator transaction binding the contract method 0xa22cb465.
+//
+// Solidity: function setApprovalForAll(address operator, bool approved) returns()
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43Transactor) SetApprovalForAll(opts *bind.TransactOpts, operator common.Address, approved bool) (*types.Transaction, error) {
+	return _FeralfileExhibitionV43.contract.Transact(opts, "setApprovalForAll", operator, approved)
+}
+
+// SetApprovalForAll is a paid mutator transaction binding the contract method 0xa22cb465.
+//
+// Solidity: function setApprovalForAll(address operator, bool approved) returns()
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43Session) SetApprovalForAll(operator common.Address, approved bool) (*types.Transaction, error) {
+	return _FeralfileExhibitionV43.Contract.SetApprovalForAll(&_FeralfileExhibitionV43.TransactOpts, operator, approved)
+}
+
+// SetApprovalForAll is a paid mutator transaction binding the contract method 0xa22cb465.
+//
+// Solidity: function setApprovalForAll(address operator, bool approved) returns()
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43TransactorSession) SetApprovalForAll(operator common.Address, approved bool) (*types.Transaction, error) {
+	return _FeralfileExhibitionV43.Contract.SetApprovalForAll(&_FeralfileExhibitionV43.TransactOpts, operator, approved)
+}
+
+// SetCostReceiver is a paid mutator transaction binding the contract method 0x1623528f.
+//
+// Solidity: function setCostReceiver(address costReceiver_) returns()
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43Transactor) SetCostReceiver(opts *bind.TransactOpts, costReceiver_ common.Address) (*types.Transaction, error) {
+	return _FeralfileExhibitionV43.contract.Transact(opts, "setCostReceiver", costReceiver_)
+}
+
+// SetCostReceiver is a paid mutator transaction binding the contract method 0x1623528f.
+//
+// Solidity: function setCostReceiver(address costReceiver_) returns()
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43Session) SetCostReceiver(costReceiver_ common.Address) (*types.Transaction, error) {
+	return _FeralfileExhibitionV43.Contract.SetCostReceiver(&_FeralfileExhibitionV43.TransactOpts, costReceiver_)
+}
+
+// SetCostReceiver is a paid mutator transaction binding the contract method 0x1623528f.
+//
+// Solidity: function setCostReceiver(address costReceiver_) returns()
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43TransactorSession) SetCostReceiver(costReceiver_ common.Address) (*types.Transaction, error) {
+	return _FeralfileExhibitionV43.Contract.SetCostReceiver(&_FeralfileExhibitionV43.TransactOpts, costReceiver_)
+}
+
+// SetSigner is a paid mutator transaction binding the contract method 0x6c19e783.
+//
+// Solidity: function setSigner(address signer_) returns()
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43Transactor) SetSigner(opts *bind.TransactOpts, signer_ common.Address) (*types.Transaction, error) {
+	return _FeralfileExhibitionV43.contract.Transact(opts, "setSigner", signer_)
+}
+
+// SetSigner is a paid mutator transaction binding the contract method 0x6c19e783.
+//
+// Solidity: function setSigner(address signer_) returns()
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43Session) SetSigner(signer_ common.Address) (*types.Transaction, error) {
+	return _FeralfileExhibitionV43.Contract.SetSigner(&_FeralfileExhibitionV43.TransactOpts, signer_)
+}
+
+// SetSigner is a paid mutator transaction binding the contract method 0x6c19e783.
+//
+// Solidity: function setSigner(address signer_) returns()
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43TransactorSession) SetSigner(signer_ common.Address) (*types.Transaction, error) {
+	return _FeralfileExhibitionV43.Contract.SetSigner(&_FeralfileExhibitionV43.TransactOpts, signer_)
+}
+
+// SetTokenBaseURI is a paid mutator transaction binding the contract method 0x8ef79e91.
+//
+// Solidity: function setTokenBaseURI(string baseURI_) returns()
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43Transactor) SetTokenBaseURI(opts *bind.TransactOpts, baseURI_ string) (*types.Transaction, error) {
+	return _FeralfileExhibitionV43.contract.Transact(opts, "setTokenBaseURI", baseURI_)
+}
+
+// SetTokenBaseURI is a paid mutator transaction binding the contract method 0x8ef79e91.
+//
+// Solidity: function setTokenBaseURI(string baseURI_) returns()
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43Session) SetTokenBaseURI(baseURI_ string) (*types.Transaction, error) {
+	return _FeralfileExhibitionV43.Contract.SetTokenBaseURI(&_FeralfileExhibitionV43.TransactOpts, baseURI_)
+}
+
+// SetTokenBaseURI is a paid mutator transaction binding the contract method 0x8ef79e91.
+//
+// Solidity: function setTokenBaseURI(string baseURI_) returns()
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43TransactorSession) SetTokenBaseURI(baseURI_ string) (*types.Transaction, error) {
+	return _FeralfileExhibitionV43.Contract.SetTokenBaseURI(&_FeralfileExhibitionV43.TransactOpts, baseURI_)
+}
+
+// SetVault is a paid mutator transaction binding the contract method 0x6817031b.
+//
+// Solidity: function setVault(address vault_) returns()
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43Transactor) SetVault(opts *bind.TransactOpts, vault_ common.Address) (*types.Transaction, error) {
+	return _FeralfileExhibitionV43.contract.Transact(opts, "setVault", vault_)
+}
+
+// SetVault is a paid mutator transaction binding the contract method 0x6817031b.
+//
+// Solidity: function setVault(address vault_) returns()
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43Session) SetVault(vault_ common.Address) (*types.Transaction, error) {
+	return _FeralfileExhibitionV43.Contract.SetVault(&_FeralfileExhibitionV43.TransactOpts, vault_)
+}
+
+// SetVault is a paid mutator transaction binding the contract method 0x6817031b.
+//
+// Solidity: function setVault(address vault_) returns()
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43TransactorSession) SetVault(vault_ common.Address) (*types.Transaction, error) {
+	return _FeralfileExhibitionV43.Contract.SetVault(&_FeralfileExhibitionV43.TransactOpts, vault_)
+}
+
+// StartSale is a paid mutator transaction binding the contract method 0xb66a0e5d.
+//
+// Solidity: function startSale() returns()
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43Transactor) StartSale(opts *bind.TransactOpts) (*types.Transaction, error) {
+	return _FeralfileExhibitionV43.contract.Transact(opts, "startSale")
+}
+
+// StartSale is a paid mutator transaction binding the contract method 0xb66a0e5d.
+//
+// Solidity: function startSale() returns()
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43Session) StartSale() (*types.Transaction, error) {
+	return _FeralfileExhibitionV43.Contract.StartSale(&_FeralfileExhibitionV43.TransactOpts)
+}
+
+// StartSale is a paid mutator transaction binding the contract method 0xb66a0e5d.
+//
+// Solidity: function startSale() returns()
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43TransactorSession) StartSale() (*types.Transaction, error) {
+	return _FeralfileExhibitionV43.Contract.StartSale(&_FeralfileExhibitionV43.TransactOpts)
+}
+
+// StopSaleAndBurn is a paid mutator transaction binding the contract method 0xb9b8311a.
+//
+// Solidity: function stopSaleAndBurn() returns()
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43Transactor) StopSaleAndBurn(opts *bind.TransactOpts) (*types.Transaction, error) {
+	return _FeralfileExhibitionV43.contract.Transact(opts, "stopSaleAndBurn")
+}
+
+// StopSaleAndBurn is a paid mutator transaction binding the contract method 0xb9b8311a.
+//
+// Solidity: function stopSaleAndBurn() returns()
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43Session) StopSaleAndBurn() (*types.Transaction, error) {
+	return _FeralfileExhibitionV43.Contract.StopSaleAndBurn(&_FeralfileExhibitionV43.TransactOpts)
+}
+
+// StopSaleAndBurn is a paid mutator transaction binding the contract method 0xb9b8311a.
+//
+// Solidity: function stopSaleAndBurn() returns()
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43TransactorSession) StopSaleAndBurn() (*types.Transaction, error) {
+	return _FeralfileExhibitionV43.Contract.StopSaleAndBurn(&_FeralfileExhibitionV43.TransactOpts)
+}
+
+// StopSaleAndTransfer is a paid mutator transaction binding the contract method 0x65a46e08.
+//
+// Solidity: function stopSaleAndTransfer(uint256[] seriesIds, address[] recipientAddresses) returns()
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43Transactor) StopSaleAndTransfer(opts *bind.TransactOpts, seriesIds []*big.Int, recipientAddresses []common.Address) (*types.Transaction, error) {
+	return _FeralfileExhibitionV43.contract.Transact(opts, "stopSaleAndTransfer", seriesIds, recipientAddresses)
+}
+
+// StopSaleAndTransfer is a paid mutator transaction binding the contract method 0x65a46e08.
+//
+// Solidity: function stopSaleAndTransfer(uint256[] seriesIds, address[] recipientAddresses) returns()
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43Session) StopSaleAndTransfer(seriesIds []*big.Int, recipientAddresses []common.Address) (*types.Transaction, error) {
+	return _FeralfileExhibitionV43.Contract.StopSaleAndTransfer(&_FeralfileExhibitionV43.TransactOpts, seriesIds, recipientAddresses)
+}
+
+// StopSaleAndTransfer is a paid mutator transaction binding the contract method 0x65a46e08.
+//
+// Solidity: function stopSaleAndTransfer(uint256[] seriesIds, address[] recipientAddresses) returns()
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43TransactorSession) StopSaleAndTransfer(seriesIds []*big.Int, recipientAddresses []common.Address) (*types.Transaction, error) {
+	return _FeralfileExhibitionV43.Contract.StopSaleAndTransfer(&_FeralfileExhibitionV43.TransactOpts, seriesIds, recipientAddresses)
+}
+
+// TransferFrom is a paid mutator transaction binding the contract method 0x23b872dd.
+//
+// Solidity: function transferFrom(address from, address to, uint256 tokenId) returns()
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43Transactor) TransferFrom(opts *bind.TransactOpts, from common.Address, to common.Address, tokenId *big.Int) (*types.Transaction, error) {
+	return _FeralfileExhibitionV43.contract.Transact(opts, "transferFrom", from, to, tokenId)
+}
+
+// TransferFrom is a paid mutator transaction binding the contract method 0x23b872dd.
+//
+// Solidity: function transferFrom(address from, address to, uint256 tokenId) returns()
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43Session) TransferFrom(from common.Address, to common.Address, tokenId *big.Int) (*types.Transaction, error) {
+	return _FeralfileExhibitionV43.Contract.TransferFrom(&_FeralfileExhibitionV43.TransactOpts, from, to, tokenId)
+}
+
+// TransferFrom is a paid mutator transaction binding the contract method 0x23b872dd.
+//
+// Solidity: function transferFrom(address from, address to, uint256 tokenId) returns()
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43TransactorSession) TransferFrom(from common.Address, to common.Address, tokenId *big.Int) (*types.Transaction, error) {
+	return _FeralfileExhibitionV43.Contract.TransferFrom(&_FeralfileExhibitionV43.TransactOpts, from, to, tokenId)
+}
+
+// TransferOwnership is a paid mutator transaction binding the contract method 0xf2fde38b.
+//
+// Solidity: function transferOwnership(address newOwner) returns()
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43Transactor) TransferOwnership(opts *bind.TransactOpts, newOwner common.Address) (*types.Transaction, error) {
+	return _FeralfileExhibitionV43.contract.Transact(opts, "transferOwnership", newOwner)
+}
+
+// TransferOwnership is a paid mutator transaction binding the contract method 0xf2fde38b.
+//
+// Solidity: function transferOwnership(address newOwner) returns()
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43Session) TransferOwnership(newOwner common.Address) (*types.Transaction, error) {
+	return _FeralfileExhibitionV43.Contract.TransferOwnership(&_FeralfileExhibitionV43.TransactOpts, newOwner)
+}
+
+// TransferOwnership is a paid mutator transaction binding the contract method 0xf2fde38b.
+//
+// Solidity: function transferOwnership(address newOwner) returns()
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43TransactorSession) TransferOwnership(newOwner common.Address) (*types.Transaction, error) {
+	return _FeralfileExhibitionV43.Contract.TransferOwnership(&_FeralfileExhibitionV43.TransactOpts, newOwner)
+}
+
+// UpdateOperatorFilterRegistry is a paid mutator transaction binding the contract method 0x114ba8ee.
+//
+// Solidity: function updateOperatorFilterRegistry(address operatorFilterRegisterAddress) returns()
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43Transactor) UpdateOperatorFilterRegistry(opts *bind.TransactOpts, operatorFilterRegisterAddress common.Address) (*types.Transaction, error) {
+	return _FeralfileExhibitionV43.contract.Transact(opts, "updateOperatorFilterRegistry", operatorFilterRegisterAddress)
+}
+
+// UpdateOperatorFilterRegistry is a paid mutator transaction binding the contract method 0x114ba8ee.
+//
+// Solidity: function updateOperatorFilterRegistry(address operatorFilterRegisterAddress) returns()
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43Session) UpdateOperatorFilterRegistry(operatorFilterRegisterAddress common.Address) (*types.Transaction, error) {
+	return _FeralfileExhibitionV43.Contract.UpdateOperatorFilterRegistry(&_FeralfileExhibitionV43.TransactOpts, operatorFilterRegisterAddress)
+}
+
+// UpdateOperatorFilterRegistry is a paid mutator transaction binding the contract method 0x114ba8ee.
+//
+// Solidity: function updateOperatorFilterRegistry(address operatorFilterRegisterAddress) returns()
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43TransactorSession) UpdateOperatorFilterRegistry(operatorFilterRegisterAddress common.Address) (*types.Transaction, error) {
+	return _FeralfileExhibitionV43.Contract.UpdateOperatorFilterRegistry(&_FeralfileExhibitionV43.TransactOpts, operatorFilterRegisterAddress)
+}
+
+// Receive is a paid mutator transaction binding the contract receive function.
+//
+// Solidity: receive() payable returns()
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43Transactor) Receive(opts *bind.TransactOpts) (*types.Transaction, error) {
+	return _FeralfileExhibitionV43.contract.RawTransact(opts, nil) // calldata is disallowed for receive function
+}
+
+// Receive is a paid mutator transaction binding the contract receive function.
+//
+// Solidity: receive() payable returns()
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43Session) Receive() (*types.Transaction, error) {
+	return _FeralfileExhibitionV43.Contract.Receive(&_FeralfileExhibitionV43.TransactOpts)
+}
+
+// Receive is a paid mutator transaction binding the contract receive function.
+//
+// Solidity: receive() payable returns()
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43TransactorSession) Receive() (*types.Transaction, error) {
+	return _FeralfileExhibitionV43.Contract.Receive(&_FeralfileExhibitionV43.TransactOpts)
+}
+
+// FeralfileExhibitionV43ApprovalIterator is returned from FilterApproval and is used to iterate over the raw logs and unpacked data for Approval events raised by the FeralfileExhibitionV43 contract.
+type FeralfileExhibitionV43ApprovalIterator struct {
+	Event *FeralfileExhibitionV43Approval // Event containing the contract specifics and raw log
+
+	contract *bind.BoundContract // Generic contract to use for unpacking event data
+	event    string              // Event name to use for unpacking event data
+
+	logs chan types.Log        // Log channel receiving the found contract events
+	sub  ethereum.Subscription // Subscription for errors, completion and termination
+	done bool                  // Whether the subscription completed delivering logs
+	fail error                 // Occurred error to stop iteration
+}
+
+// Next advances the iterator to the subsequent event, returning whether there
+// are any more events found. In case of a retrieval or parsing error, false is
+// returned and Error() can be queried for the exact failure.
+func (it *FeralfileExhibitionV43ApprovalIterator) Next() bool {
+	// If the iterator failed, stop iterating
+	if it.fail != nil {
+		return false
+	}
+	// If the iterator completed, deliver directly whatever's available
+	if it.done {
+		select {
+		case log := <-it.logs:
+			it.Event = new(FeralfileExhibitionV43Approval)
+			if err := it.contract.UnpackLog(it.Event, it.event, log); err != nil {
+				it.fail = err
+				return false
+			}
+			it.Event.Raw = log
+			return true
+
+		default:
+			return false
+		}
+	}
+	// Iterator still in progress, wait for either a data or an error event
+	select {
+	case log := <-it.logs:
+		it.Event = new(FeralfileExhibitionV43Approval)
+		if err := it.contract.UnpackLog(it.Event, it.event, log); err != nil {
+			it.fail = err
+			return false
+		}
+		it.Event.Raw = log
+		return true
+
+	case err := <-it.sub.Err():
+		it.done = true
+		it.fail = err
+		return it.Next()
+	}
+}
+
+// Error returns any retrieval or parsing error occurred during filtering.
+func (it *FeralfileExhibitionV43ApprovalIterator) Error() error {
+	return it.fail
+}
+
+// Close terminates the iteration process, releasing any pending underlying
+// resources.
+func (it *FeralfileExhibitionV43ApprovalIterator) Close() error {
+	it.sub.Unsubscribe()
+	return nil
+}
+
+// FeralfileExhibitionV43Approval represents a Approval event raised by the FeralfileExhibitionV43 contract.
+type FeralfileExhibitionV43Approval struct {
+	Owner    common.Address
+	Approved common.Address
+	TokenId  *big.Int
+	Raw      types.Log // Blockchain specific contextual infos
+}
+
+// FilterApproval is a free log retrieval operation binding the contract event 0x8c5be1e5ebec7d5bd14f71427d1e84f3dd0314c0f7b2291e5b200ac8c7c3b925.
+//
+// Solidity: event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId)
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43Filterer) FilterApproval(opts *bind.FilterOpts, owner []common.Address, approved []common.Address, tokenId []*big.Int) (*FeralfileExhibitionV43ApprovalIterator, error) {
+
+	var ownerRule []interface{}
+	for _, ownerItem := range owner {
+		ownerRule = append(ownerRule, ownerItem)
+	}
+	var approvedRule []interface{}
+	for _, approvedItem := range approved {
+		approvedRule = append(approvedRule, approvedItem)
+	}
+	var tokenIdRule []interface{}
+	for _, tokenIdItem := range tokenId {
+		tokenIdRule = append(tokenIdRule, tokenIdItem)
+	}
+
+	logs, sub, err := _FeralfileExhibitionV43.contract.FilterLogs(opts, "Approval", ownerRule, approvedRule, tokenIdRule)
+	if err != nil {
+		return nil, err
+	}
+	return &FeralfileExhibitionV43ApprovalIterator{contract: _FeralfileExhibitionV43.contract, event: "Approval", logs: logs, sub: sub}, nil
+}
+
+// WatchApproval is a free log subscription operation binding the contract event 0x8c5be1e5ebec7d5bd14f71427d1e84f3dd0314c0f7b2291e5b200ac8c7c3b925.
+//
+// Solidity: event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId)
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43Filterer) WatchApproval(opts *bind.WatchOpts, sink chan<- *FeralfileExhibitionV43Approval, owner []common.Address, approved []common.Address, tokenId []*big.Int) (event.Subscription, error) {
+
+	var ownerRule []interface{}
+	for _, ownerItem := range owner {
+		ownerRule = append(ownerRule, ownerItem)
+	}
+	var approvedRule []interface{}
+	for _, approvedItem := range approved {
+		approvedRule = append(approvedRule, approvedItem)
+	}
+	var tokenIdRule []interface{}
+	for _, tokenIdItem := range tokenId {
+		tokenIdRule = append(tokenIdRule, tokenIdItem)
+	}
+
+	logs, sub, err := _FeralfileExhibitionV43.contract.WatchLogs(opts, "Approval", ownerRule, approvedRule, tokenIdRule)
+	if err != nil {
+		return nil, err
+	}
+	return event.NewSubscription(func(quit <-chan struct{}) error {
+		defer sub.Unsubscribe()
+		for {
+			select {
+			case log := <-logs:
+				// New log arrived, parse the event and forward to the user
+				event := new(FeralfileExhibitionV43Approval)
+				if err := _FeralfileExhibitionV43.contract.UnpackLog(event, "Approval", log); err != nil {
+					return err
+				}
+				event.Raw = log
+
+				select {
+				case sink <- event:
+				case err := <-sub.Err():
+					return err
+				case <-quit:
+					return nil
+				}
+			case err := <-sub.Err():
+				return err
+			case <-quit:
+				return nil
+			}
+		}
+	}), nil
+}
+
+// ParseApproval is a log parse operation binding the contract event 0x8c5be1e5ebec7d5bd14f71427d1e84f3dd0314c0f7b2291e5b200ac8c7c3b925.
+//
+// Solidity: event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId)
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43Filterer) ParseApproval(log types.Log) (*FeralfileExhibitionV43Approval, error) {
+	event := new(FeralfileExhibitionV43Approval)
+	if err := _FeralfileExhibitionV43.contract.UnpackLog(event, "Approval", log); err != nil {
+		return nil, err
+	}
+	event.Raw = log
+	return event, nil
+}
+
+// FeralfileExhibitionV43ApprovalForAllIterator is returned from FilterApprovalForAll and is used to iterate over the raw logs and unpacked data for ApprovalForAll events raised by the FeralfileExhibitionV43 contract.
+type FeralfileExhibitionV43ApprovalForAllIterator struct {
+	Event *FeralfileExhibitionV43ApprovalForAll // Event containing the contract specifics and raw log
+
+	contract *bind.BoundContract // Generic contract to use for unpacking event data
+	event    string              // Event name to use for unpacking event data
+
+	logs chan types.Log        // Log channel receiving the found contract events
+	sub  ethereum.Subscription // Subscription for errors, completion and termination
+	done bool                  // Whether the subscription completed delivering logs
+	fail error                 // Occurred error to stop iteration
+}
+
+// Next advances the iterator to the subsequent event, returning whether there
+// are any more events found. In case of a retrieval or parsing error, false is
+// returned and Error() can be queried for the exact failure.
+func (it *FeralfileExhibitionV43ApprovalForAllIterator) Next() bool {
+	// If the iterator failed, stop iterating
+	if it.fail != nil {
+		return false
+	}
+	// If the iterator completed, deliver directly whatever's available
+	if it.done {
+		select {
+		case log := <-it.logs:
+			it.Event = new(FeralfileExhibitionV43ApprovalForAll)
+			if err := it.contract.UnpackLog(it.Event, it.event, log); err != nil {
+				it.fail = err
+				return false
+			}
+			it.Event.Raw = log
+			return true
+
+		default:
+			return false
+		}
+	}
+	// Iterator still in progress, wait for either a data or an error event
+	select {
+	case log := <-it.logs:
+		it.Event = new(FeralfileExhibitionV43ApprovalForAll)
+		if err := it.contract.UnpackLog(it.Event, it.event, log); err != nil {
+			it.fail = err
+			return false
+		}
+		it.Event.Raw = log
+		return true
+
+	case err := <-it.sub.Err():
+		it.done = true
+		it.fail = err
+		return it.Next()
+	}
+}
+
+// Error returns any retrieval or parsing error occurred during filtering.
+func (it *FeralfileExhibitionV43ApprovalForAllIterator) Error() error {
+	return it.fail
+}
+
+// Close terminates the iteration process, releasing any pending underlying
+// resources.
+func (it *FeralfileExhibitionV43ApprovalForAllIterator) Close() error {
+	it.sub.Unsubscribe()
+	return nil
+}
+
+// FeralfileExhibitionV43ApprovalForAll represents a ApprovalForAll event raised by the FeralfileExhibitionV43 contract.
+type FeralfileExhibitionV43ApprovalForAll struct {
+	Owner    common.Address
+	Operator common.Address
+	Approved bool
+	Raw      types.Log // Blockchain specific contextual infos
+}
+
+// FilterApprovalForAll is a free log retrieval operation binding the contract event 0x17307eab39ab6107e8899845ad3d59bd9653f200f220920489ca2b5937696c31.
+//
+// Solidity: event ApprovalForAll(address indexed owner, address indexed operator, bool approved)
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43Filterer) FilterApprovalForAll(opts *bind.FilterOpts, owner []common.Address, operator []common.Address) (*FeralfileExhibitionV43ApprovalForAllIterator, error) {
+
+	var ownerRule []interface{}
+	for _, ownerItem := range owner {
+		ownerRule = append(ownerRule, ownerItem)
+	}
+	var operatorRule []interface{}
+	for _, operatorItem := range operator {
+		operatorRule = append(operatorRule, operatorItem)
+	}
+
+	logs, sub, err := _FeralfileExhibitionV43.contract.FilterLogs(opts, "ApprovalForAll", ownerRule, operatorRule)
+	if err != nil {
+		return nil, err
+	}
+	return &FeralfileExhibitionV43ApprovalForAllIterator{contract: _FeralfileExhibitionV43.contract, event: "ApprovalForAll", logs: logs, sub: sub}, nil
+}
+
+// WatchApprovalForAll is a free log subscription operation binding the contract event 0x17307eab39ab6107e8899845ad3d59bd9653f200f220920489ca2b5937696c31.
+//
+// Solidity: event ApprovalForAll(address indexed owner, address indexed operator, bool approved)
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43Filterer) WatchApprovalForAll(opts *bind.WatchOpts, sink chan<- *FeralfileExhibitionV43ApprovalForAll, owner []common.Address, operator []common.Address) (event.Subscription, error) {
+
+	var ownerRule []interface{}
+	for _, ownerItem := range owner {
+		ownerRule = append(ownerRule, ownerItem)
+	}
+	var operatorRule []interface{}
+	for _, operatorItem := range operator {
+		operatorRule = append(operatorRule, operatorItem)
+	}
+
+	logs, sub, err := _FeralfileExhibitionV43.contract.WatchLogs(opts, "ApprovalForAll", ownerRule, operatorRule)
+	if err != nil {
+		return nil, err
+	}
+	return event.NewSubscription(func(quit <-chan struct{}) error {
+		defer sub.Unsubscribe()
+		for {
+			select {
+			case log := <-logs:
+				// New log arrived, parse the event and forward to the user
+				event := new(FeralfileExhibitionV43ApprovalForAll)
+				if err := _FeralfileExhibitionV43.contract.UnpackLog(event, "ApprovalForAll", log); err != nil {
+					return err
+				}
+				event.Raw = log
+
+				select {
+				case sink <- event:
+				case err := <-sub.Err():
+					return err
+				case <-quit:
+					return nil
+				}
+			case err := <-sub.Err():
+				return err
+			case <-quit:
+				return nil
+			}
+		}
+	}), nil
+}
+
+// ParseApprovalForAll is a log parse operation binding the contract event 0x17307eab39ab6107e8899845ad3d59bd9653f200f220920489ca2b5937696c31.
+//
+// Solidity: event ApprovalForAll(address indexed owner, address indexed operator, bool approved)
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43Filterer) ParseApprovalForAll(log types.Log) (*FeralfileExhibitionV43ApprovalForAll, error) {
+	event := new(FeralfileExhibitionV43ApprovalForAll)
+	if err := _FeralfileExhibitionV43.contract.UnpackLog(event, "ApprovalForAll", log); err != nil {
+		return nil, err
+	}
+	event.Raw = log
+	return event, nil
+}
+
+// FeralfileExhibitionV43BurnArtworkIterator is returned from FilterBurnArtwork and is used to iterate over the raw logs and unpacked data for BurnArtwork events raised by the FeralfileExhibitionV43 contract.
+type FeralfileExhibitionV43BurnArtworkIterator struct {
+	Event *FeralfileExhibitionV43BurnArtwork // Event containing the contract specifics and raw log
+
+	contract *bind.BoundContract // Generic contract to use for unpacking event data
+	event    string              // Event name to use for unpacking event data
+
+	logs chan types.Log        // Log channel receiving the found contract events
+	sub  ethereum.Subscription // Subscription for errors, completion and termination
+	done bool                  // Whether the subscription completed delivering logs
+	fail error                 // Occurred error to stop iteration
+}
+
+// Next advances the iterator to the subsequent event, returning whether there
+// are any more events found. In case of a retrieval or parsing error, false is
+// returned and Error() can be queried for the exact failure.
+func (it *FeralfileExhibitionV43BurnArtworkIterator) Next() bool {
+	// If the iterator failed, stop iterating
+	if it.fail != nil {
+		return false
+	}
+	// If the iterator completed, deliver directly whatever's available
+	if it.done {
+		select {
+		case log := <-it.logs:
+			it.Event = new(FeralfileExhibitionV43BurnArtwork)
+			if err := it.contract.UnpackLog(it.Event, it.event, log); err != nil {
+				it.fail = err
+				return false
+			}
+			it.Event.Raw = log
+			return true
+
+		default:
+			return false
+		}
+	}
+	// Iterator still in progress, wait for either a data or an error event
+	select {
+	case log := <-it.logs:
+		it.Event = new(FeralfileExhibitionV43BurnArtwork)
+		if err := it.contract.UnpackLog(it.Event, it.event, log); err != nil {
+			it.fail = err
+			return false
+		}
+		it.Event.Raw = log
+		return true
+
+	case err := <-it.sub.Err():
+		it.done = true
+		it.fail = err
+		return it.Next()
+	}
+}
+
+// Error returns any retrieval or parsing error occurred during filtering.
+func (it *FeralfileExhibitionV43BurnArtworkIterator) Error() error {
+	return it.fail
+}
+
+// Close terminates the iteration process, releasing any pending underlying
+// resources.
+func (it *FeralfileExhibitionV43BurnArtworkIterator) Close() error {
+	it.sub.Unsubscribe()
+	return nil
+}
+
+// FeralfileExhibitionV43BurnArtwork represents a BurnArtwork event raised by the FeralfileExhibitionV43 contract.
+type FeralfileExhibitionV43BurnArtwork struct {
+	TokenId *big.Int
+	Raw     types.Log // Blockchain specific contextual infos
+}
+
+// FilterBurnArtwork is a free log retrieval operation binding the contract event 0xbde7938970372996ff103863625e348ef2bf8f38a5b02181be75aafef17c23d5.
+//
+// Solidity: event BurnArtwork(uint256 indexed tokenId)
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43Filterer) FilterBurnArtwork(opts *bind.FilterOpts, tokenId []*big.Int) (*FeralfileExhibitionV43BurnArtworkIterator, error) {
+
+	var tokenIdRule []interface{}
+	for _, tokenIdItem := range tokenId {
+		tokenIdRule = append(tokenIdRule, tokenIdItem)
+	}
+
+	logs, sub, err := _FeralfileExhibitionV43.contract.FilterLogs(opts, "BurnArtwork", tokenIdRule)
+	if err != nil {
+		return nil, err
+	}
+	return &FeralfileExhibitionV43BurnArtworkIterator{contract: _FeralfileExhibitionV43.contract, event: "BurnArtwork", logs: logs, sub: sub}, nil
+}
+
+// WatchBurnArtwork is a free log subscription operation binding the contract event 0xbde7938970372996ff103863625e348ef2bf8f38a5b02181be75aafef17c23d5.
+//
+// Solidity: event BurnArtwork(uint256 indexed tokenId)
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43Filterer) WatchBurnArtwork(opts *bind.WatchOpts, sink chan<- *FeralfileExhibitionV43BurnArtwork, tokenId []*big.Int) (event.Subscription, error) {
+
+	var tokenIdRule []interface{}
+	for _, tokenIdItem := range tokenId {
+		tokenIdRule = append(tokenIdRule, tokenIdItem)
+	}
+
+	logs, sub, err := _FeralfileExhibitionV43.contract.WatchLogs(opts, "BurnArtwork", tokenIdRule)
+	if err != nil {
+		return nil, err
+	}
+	return event.NewSubscription(func(quit <-chan struct{}) error {
+		defer sub.Unsubscribe()
+		for {
+			select {
+			case log := <-logs:
+				// New log arrived, parse the event and forward to the user
+				event := new(FeralfileExhibitionV43BurnArtwork)
+				if err := _FeralfileExhibitionV43.contract.UnpackLog(event, "BurnArtwork", log); err != nil {
+					return err
+				}
+				event.Raw = log
+
+				select {
+				case sink <- event:
+				case err := <-sub.Err():
+					return err
+				case <-quit:
+					return nil
+				}
+			case err := <-sub.Err():
+				return err
+			case <-quit:
+				return nil
+			}
+		}
+	}), nil
+}
+
+// ParseBurnArtwork is a log parse operation binding the contract event 0xbde7938970372996ff103863625e348ef2bf8f38a5b02181be75aafef17c23d5.
+//
+// Solidity: event BurnArtwork(uint256 indexed tokenId)
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43Filterer) ParseBurnArtwork(log types.Log) (*FeralfileExhibitionV43BurnArtwork, error) {
+	event := new(FeralfileExhibitionV43BurnArtwork)
+	if err := _FeralfileExhibitionV43.contract.UnpackLog(event, "BurnArtwork", log); err != nil {
+		return nil, err
+	}
+	event.Raw = log
+	return event, nil
+}
+
+// FeralfileExhibitionV43BuyArtworkIterator is returned from FilterBuyArtwork and is used to iterate over the raw logs and unpacked data for BuyArtwork events raised by the FeralfileExhibitionV43 contract.
+type FeralfileExhibitionV43BuyArtworkIterator struct {
+	Event *FeralfileExhibitionV43BuyArtwork // Event containing the contract specifics and raw log
+
+	contract *bind.BoundContract // Generic contract to use for unpacking event data
+	event    string              // Event name to use for unpacking event data
+
+	logs chan types.Log        // Log channel receiving the found contract events
+	sub  ethereum.Subscription // Subscription for errors, completion and termination
+	done bool                  // Whether the subscription completed delivering logs
+	fail error                 // Occurred error to stop iteration
+}
+
+// Next advances the iterator to the subsequent event, returning whether there
+// are any more events found. In case of a retrieval or parsing error, false is
+// returned and Error() can be queried for the exact failure.
+func (it *FeralfileExhibitionV43BuyArtworkIterator) Next() bool {
+	// If the iterator failed, stop iterating
+	if it.fail != nil {
+		return false
+	}
+	// If the iterator completed, deliver directly whatever's available
+	if it.done {
+		select {
+		case log := <-it.logs:
+			it.Event = new(FeralfileExhibitionV43BuyArtwork)
+			if err := it.contract.UnpackLog(it.Event, it.event, log); err != nil {
+				it.fail = err
+				return false
+			}
+			it.Event.Raw = log
+			return true
+
+		default:
+			return false
+		}
+	}
+	// Iterator still in progress, wait for either a data or an error event
+	select {
+	case log := <-it.logs:
+		it.Event = new(FeralfileExhibitionV43BuyArtwork)
+		if err := it.contract.UnpackLog(it.Event, it.event, log); err != nil {
+			it.fail = err
+			return false
+		}
+		it.Event.Raw = log
+		return true
+
+	case err := <-it.sub.Err():
+		it.done = true
+		it.fail = err
+		return it.Next()
+	}
+}
+
+// Error returns any retrieval or parsing error occurred during filtering.
+func (it *FeralfileExhibitionV43BuyArtworkIterator) Error() error {
+	return it.fail
+}
+
+// Close terminates the iteration process, releasing any pending underlying
+// resources.
+func (it *FeralfileExhibitionV43BuyArtworkIterator) Close() error {
+	it.sub.Unsubscribe()
+	return nil
+}
+
+// FeralfileExhibitionV43BuyArtwork represents a BuyArtwork event raised by the FeralfileExhibitionV43 contract.
+type FeralfileExhibitionV43BuyArtwork struct {
+	Buyer   common.Address
+	TokenId *big.Int
+	Raw     types.Log // Blockchain specific contextual infos
+}
+
+// FilterBuyArtwork is a free log retrieval operation binding the contract event 0x0475389cd69b8d3163620b43283bf74e8fc71020c3c6cef2a529b5c405e9687f.
+//
+// Solidity: event BuyArtwork(address indexed buyer, uint256 indexed tokenId)
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43Filterer) FilterBuyArtwork(opts *bind.FilterOpts, buyer []common.Address, tokenId []*big.Int) (*FeralfileExhibitionV43BuyArtworkIterator, error) {
+
+	var buyerRule []interface{}
+	for _, buyerItem := range buyer {
+		buyerRule = append(buyerRule, buyerItem)
+	}
+	var tokenIdRule []interface{}
+	for _, tokenIdItem := range tokenId {
+		tokenIdRule = append(tokenIdRule, tokenIdItem)
+	}
+
+	logs, sub, err := _FeralfileExhibitionV43.contract.FilterLogs(opts, "BuyArtwork", buyerRule, tokenIdRule)
+	if err != nil {
+		return nil, err
+	}
+	return &FeralfileExhibitionV43BuyArtworkIterator{contract: _FeralfileExhibitionV43.contract, event: "BuyArtwork", logs: logs, sub: sub}, nil
+}
+
+// WatchBuyArtwork is a free log subscription operation binding the contract event 0x0475389cd69b8d3163620b43283bf74e8fc71020c3c6cef2a529b5c405e9687f.
+//
+// Solidity: event BuyArtwork(address indexed buyer, uint256 indexed tokenId)
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43Filterer) WatchBuyArtwork(opts *bind.WatchOpts, sink chan<- *FeralfileExhibitionV43BuyArtwork, buyer []common.Address, tokenId []*big.Int) (event.Subscription, error) {
+
+	var buyerRule []interface{}
+	for _, buyerItem := range buyer {
+		buyerRule = append(buyerRule, buyerItem)
+	}
+	var tokenIdRule []interface{}
+	for _, tokenIdItem := range tokenId {
+		tokenIdRule = append(tokenIdRule, tokenIdItem)
+	}
+
+	logs, sub, err := _FeralfileExhibitionV43.contract.WatchLogs(opts, "BuyArtwork", buyerRule, tokenIdRule)
+	if err != nil {
+		return nil, err
+	}
+	return event.NewSubscription(func(quit <-chan struct{}) error {
+		defer sub.Unsubscribe()
+		for {
+			select {
+			case log := <-logs:
+				// New log arrived, parse the event and forward to the user
+				event := new(FeralfileExhibitionV43BuyArtwork)
+				if err := _FeralfileExhibitionV43.contract.UnpackLog(event, "BuyArtwork", log); err != nil {
+					return err
+				}
+				event.Raw = log
+
+				select {
+				case sink <- event:
+				case err := <-sub.Err():
+					return err
+				case <-quit:
+					return nil
+				}
+			case err := <-sub.Err():
+				return err
+			case <-quit:
+				return nil
+			}
+		}
+	}), nil
+}
+
+// ParseBuyArtwork is a log parse operation binding the contract event 0x0475389cd69b8d3163620b43283bf74e8fc71020c3c6cef2a529b5c405e9687f.
+//
+// Solidity: event BuyArtwork(address indexed buyer, uint256 indexed tokenId)
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43Filterer) ParseBuyArtwork(log types.Log) (*FeralfileExhibitionV43BuyArtwork, error) {
+	event := new(FeralfileExhibitionV43BuyArtwork)
+	if err := _FeralfileExhibitionV43.contract.UnpackLog(event, "BuyArtwork", log); err != nil {
+		return nil, err
+	}
+	event.Raw = log
+	return event, nil
+}
+
+// FeralfileExhibitionV43MergedArtworkIterator is returned from FilterMergedArtwork and is used to iterate over the raw logs and unpacked data for MergedArtwork events raised by the FeralfileExhibitionV43 contract.
+type FeralfileExhibitionV43MergedArtworkIterator struct {
+	Event *FeralfileExhibitionV43MergedArtwork // Event containing the contract specifics and raw log
+
+	contract *bind.BoundContract // Generic contract to use for unpacking event data
+	event    string              // Event name to use for unpacking event data
+
+	logs chan types.Log        // Log channel receiving the found contract events
+	sub  ethereum.Subscription // Subscription for errors, completion and termination
+	done bool                  // Whether the subscription completed delivering logs
+	fail error                 // Occurred error to stop iteration
+}
+
+// Next advances the iterator to the subsequent event, returning whether there
+// are any more events found. In case of a retrieval or parsing error, false is
+// returned and Error() can be queried for the exact failure.
+func (it *FeralfileExhibitionV43MergedArtworkIterator) Next() bool {
+	// If the iterator failed, stop iterating
+	if it.fail != nil {
+		return false
+	}
+	// If the iterator completed, deliver directly whatever's available
+	if it.done {
+		select {
+		case log := <-it.logs:
+			it.Event = new(FeralfileExhibitionV43MergedArtwork)
+			if err := it.contract.UnpackLog(it.Event, it.event, log); err != nil {
+				it.fail = err
+				return false
+			}
+			it.Event.Raw = log
+			return true
+
+		default:
+			return false
+		}
+	}
+	// Iterator still in progress, wait for either a data or an error event
+	select {
+	case log := <-it.logs:
+		it.Event = new(FeralfileExhibitionV43MergedArtwork)
+		if err := it.contract.UnpackLog(it.Event, it.event, log); err != nil {
+			it.fail = err
+			return false
+		}
+		it.Event.Raw = log
+		return true
+
+	case err := <-it.sub.Err():
+		it.done = true
+		it.fail = err
+		return it.Next()
+	}
+}
+
+// Error returns any retrieval or parsing error occurred during filtering.
+func (it *FeralfileExhibitionV43MergedArtworkIterator) Error() error {
+	return it.fail
+}
+
+// Close terminates the iteration process, releasing any pending underlying
+// resources.
+func (it *FeralfileExhibitionV43MergedArtworkIterator) Close() error {
+	it.sub.Unsubscribe()
+	return nil
+}
+
+// FeralfileExhibitionV43MergedArtwork represents a MergedArtwork event raised by the FeralfileExhibitionV43 contract.
+type FeralfileExhibitionV43MergedArtwork struct {
+	Owner           common.Address
+	MergingTokenIds []*big.Int
+	NewTokenId      *big.Int
+	Raw             types.Log // Blockchain specific contextual infos
+}
+
+// FilterMergedArtwork is a free log retrieval operation binding the contract event 0x01cb282a137c69adfa541f949214e683b63d21e063da2750ccd324692dca8382.
+//
+// Solidity: event MergedArtwork(address indexed owner, uint256[] mergingTokenIds, uint256 indexed newTokenId)
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43Filterer) FilterMergedArtwork(opts *bind.FilterOpts, owner []common.Address, newTokenId []*big.Int) (*FeralfileExhibitionV43MergedArtworkIterator, error) {
+
+	var ownerRule []interface{}
+	for _, ownerItem := range owner {
+		ownerRule = append(ownerRule, ownerItem)
+	}
+
+	var newTokenIdRule []interface{}
+	for _, newTokenIdItem := range newTokenId {
+		newTokenIdRule = append(newTokenIdRule, newTokenIdItem)
+	}
+
+	logs, sub, err := _FeralfileExhibitionV43.contract.FilterLogs(opts, "MergedArtwork", ownerRule, newTokenIdRule)
+	if err != nil {
+		return nil, err
+	}
+	return &FeralfileExhibitionV43MergedArtworkIterator{contract: _FeralfileExhibitionV43.contract, event: "MergedArtwork", logs: logs, sub: sub}, nil
+}
+
+// WatchMergedArtwork is a free log subscription operation binding the contract event 0x01cb282a137c69adfa541f949214e683b63d21e063da2750ccd324692dca8382.
+//
+// Solidity: event MergedArtwork(address indexed owner, uint256[] mergingTokenIds, uint256 indexed newTokenId)
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43Filterer) WatchMergedArtwork(opts *bind.WatchOpts, sink chan<- *FeralfileExhibitionV43MergedArtwork, owner []common.Address, newTokenId []*big.Int) (event.Subscription, error) {
+
+	var ownerRule []interface{}
+	for _, ownerItem := range owner {
+		ownerRule = append(ownerRule, ownerItem)
+	}
+
+	var newTokenIdRule []interface{}
+	for _, newTokenIdItem := range newTokenId {
+		newTokenIdRule = append(newTokenIdRule, newTokenIdItem)
+	}
+
+	logs, sub, err := _FeralfileExhibitionV43.contract.WatchLogs(opts, "MergedArtwork", ownerRule, newTokenIdRule)
+	if err != nil {
+		return nil, err
+	}
+	return event.NewSubscription(func(quit <-chan struct{}) error {
+		defer sub.Unsubscribe()
+		for {
+			select {
+			case log := <-logs:
+				// New log arrived, parse the event and forward to the user
+				event := new(FeralfileExhibitionV43MergedArtwork)
+				if err := _FeralfileExhibitionV43.contract.UnpackLog(event, "MergedArtwork", log); err != nil {
+					return err
+				}
+				event.Raw = log
+
+				select {
+				case sink <- event:
+				case err := <-sub.Err():
+					return err
+				case <-quit:
+					return nil
+				}
+			case err := <-sub.Err():
+				return err
+			case <-quit:
+				return nil
+			}
+		}
+	}), nil
+}
+
+// ParseMergedArtwork is a log parse operation binding the contract event 0x01cb282a137c69adfa541f949214e683b63d21e063da2750ccd324692dca8382.
+//
+// Solidity: event MergedArtwork(address indexed owner, uint256[] mergingTokenIds, uint256 indexed newTokenId)
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43Filterer) ParseMergedArtwork(log types.Log) (*FeralfileExhibitionV43MergedArtwork, error) {
+	event := new(FeralfileExhibitionV43MergedArtwork)
+	if err := _FeralfileExhibitionV43.contract.UnpackLog(event, "MergedArtwork", log); err != nil {
+		return nil, err
+	}
+	event.Raw = log
+	return event, nil
+}
+
+// FeralfileExhibitionV43NewArtworkIterator is returned from FilterNewArtwork and is used to iterate over the raw logs and unpacked data for NewArtwork events raised by the FeralfileExhibitionV43 contract.
+type FeralfileExhibitionV43NewArtworkIterator struct {
+	Event *FeralfileExhibitionV43NewArtwork // Event containing the contract specifics and raw log
+
+	contract *bind.BoundContract // Generic contract to use for unpacking event data
+	event    string              // Event name to use for unpacking event data
+
+	logs chan types.Log        // Log channel receiving the found contract events
+	sub  ethereum.Subscription // Subscription for errors, completion and termination
+	done bool                  // Whether the subscription completed delivering logs
+	fail error                 // Occurred error to stop iteration
+}
+
+// Next advances the iterator to the subsequent event, returning whether there
+// are any more events found. In case of a retrieval or parsing error, false is
+// returned and Error() can be queried for the exact failure.
+func (it *FeralfileExhibitionV43NewArtworkIterator) Next() bool {
+	// If the iterator failed, stop iterating
+	if it.fail != nil {
+		return false
+	}
+	// If the iterator completed, deliver directly whatever's available
+	if it.done {
+		select {
+		case log := <-it.logs:
+			it.Event = new(FeralfileExhibitionV43NewArtwork)
+			if err := it.contract.UnpackLog(it.Event, it.event, log); err != nil {
+				it.fail = err
+				return false
+			}
+			it.Event.Raw = log
+			return true
+
+		default:
+			return false
+		}
+	}
+	// Iterator still in progress, wait for either a data or an error event
+	select {
+	case log := <-it.logs:
+		it.Event = new(FeralfileExhibitionV43NewArtwork)
+		if err := it.contract.UnpackLog(it.Event, it.event, log); err != nil {
+			it.fail = err
+			return false
+		}
+		it.Event.Raw = log
+		return true
+
+	case err := <-it.sub.Err():
+		it.done = true
+		it.fail = err
+		return it.Next()
+	}
+}
+
+// Error returns any retrieval or parsing error occurred during filtering.
+func (it *FeralfileExhibitionV43NewArtworkIterator) Error() error {
+	return it.fail
+}
+
+// Close terminates the iteration process, releasing any pending underlying
+// resources.
+func (it *FeralfileExhibitionV43NewArtworkIterator) Close() error {
+	it.sub.Unsubscribe()
+	return nil
+}
+
+// FeralfileExhibitionV43NewArtwork represents a NewArtwork event raised by the FeralfileExhibitionV43 contract.
+type FeralfileExhibitionV43NewArtwork struct {
+	Owner    common.Address
+	SeriesId *big.Int
+	TokenId  *big.Int
+	Raw      types.Log // Blockchain specific contextual infos
+}
+
+// FilterNewArtwork is a free log retrieval operation binding the contract event 0x407d7da1d3b2b1871fbfa2b5b1c4657a3cc5711d3023c552798551c7ee301eea.
+//
+// Solidity: event NewArtwork(address indexed owner, uint256 indexed seriesId, uint256 indexed tokenId)
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43Filterer) FilterNewArtwork(opts *bind.FilterOpts, owner []common.Address, seriesId []*big.Int, tokenId []*big.Int) (*FeralfileExhibitionV43NewArtworkIterator, error) {
+
+	var ownerRule []interface{}
+	for _, ownerItem := range owner {
+		ownerRule = append(ownerRule, ownerItem)
+	}
+	var seriesIdRule []interface{}
+	for _, seriesIdItem := range seriesId {
+		seriesIdRule = append(seriesIdRule, seriesIdItem)
+	}
+	var tokenIdRule []interface{}
+	for _, tokenIdItem := range tokenId {
+		tokenIdRule = append(tokenIdRule, tokenIdItem)
+	}
+
+	logs, sub, err := _FeralfileExhibitionV43.contract.FilterLogs(opts, "NewArtwork", ownerRule, seriesIdRule, tokenIdRule)
+	if err != nil {
+		return nil, err
+	}
+	return &FeralfileExhibitionV43NewArtworkIterator{contract: _FeralfileExhibitionV43.contract, event: "NewArtwork", logs: logs, sub: sub}, nil
+}
+
+// WatchNewArtwork is a free log subscription operation binding the contract event 0x407d7da1d3b2b1871fbfa2b5b1c4657a3cc5711d3023c552798551c7ee301eea.
+//
+// Solidity: event NewArtwork(address indexed owner, uint256 indexed seriesId, uint256 indexed tokenId)
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43Filterer) WatchNewArtwork(opts *bind.WatchOpts, sink chan<- *FeralfileExhibitionV43NewArtwork, owner []common.Address, seriesId []*big.Int, tokenId []*big.Int) (event.Subscription, error) {
+
+	var ownerRule []interface{}
+	for _, ownerItem := range owner {
+		ownerRule = append(ownerRule, ownerItem)
+	}
+	var seriesIdRule []interface{}
+	for _, seriesIdItem := range seriesId {
+		seriesIdRule = append(seriesIdRule, seriesIdItem)
+	}
+	var tokenIdRule []interface{}
+	for _, tokenIdItem := range tokenId {
+		tokenIdRule = append(tokenIdRule, tokenIdItem)
+	}
+
+	logs, sub, err := _FeralfileExhibitionV43.contract.WatchLogs(opts, "NewArtwork", ownerRule, seriesIdRule, tokenIdRule)
+	if err != nil {
+		return nil, err
+	}
+	return event.NewSubscription(func(quit <-chan struct{}) error {
+		defer sub.Unsubscribe()
+		for {
+			select {
+			case log := <-logs:
+				// New log arrived, parse the event and forward to the user
+				event := new(FeralfileExhibitionV43NewArtwork)
+				if err := _FeralfileExhibitionV43.contract.UnpackLog(event, "NewArtwork", log); err != nil {
+					return err
+				}
+				event.Raw = log
+
+				select {
+				case sink <- event:
+				case err := <-sub.Err():
+					return err
+				case <-quit:
+					return nil
+				}
+			case err := <-sub.Err():
+				return err
+			case <-quit:
+				return nil
+			}
+		}
+	}), nil
+}
+
+// ParseNewArtwork is a log parse operation binding the contract event 0x407d7da1d3b2b1871fbfa2b5b1c4657a3cc5711d3023c552798551c7ee301eea.
+//
+// Solidity: event NewArtwork(address indexed owner, uint256 indexed seriesId, uint256 indexed tokenId)
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43Filterer) ParseNewArtwork(log types.Log) (*FeralfileExhibitionV43NewArtwork, error) {
+	event := new(FeralfileExhibitionV43NewArtwork)
+	if err := _FeralfileExhibitionV43.contract.UnpackLog(event, "NewArtwork", log); err != nil {
+		return nil, err
+	}
+	event.Raw = log
+	return event, nil
+}
+
+// FeralfileExhibitionV43OwnershipTransferredIterator is returned from FilterOwnershipTransferred and is used to iterate over the raw logs and unpacked data for OwnershipTransferred events raised by the FeralfileExhibitionV43 contract.
+type FeralfileExhibitionV43OwnershipTransferredIterator struct {
+	Event *FeralfileExhibitionV43OwnershipTransferred // Event containing the contract specifics and raw log
+
+	contract *bind.BoundContract // Generic contract to use for unpacking event data
+	event    string              // Event name to use for unpacking event data
+
+	logs chan types.Log        // Log channel receiving the found contract events
+	sub  ethereum.Subscription // Subscription for errors, completion and termination
+	done bool                  // Whether the subscription completed delivering logs
+	fail error                 // Occurred error to stop iteration
+}
+
+// Next advances the iterator to the subsequent event, returning whether there
+// are any more events found. In case of a retrieval or parsing error, false is
+// returned and Error() can be queried for the exact failure.
+func (it *FeralfileExhibitionV43OwnershipTransferredIterator) Next() bool {
+	// If the iterator failed, stop iterating
+	if it.fail != nil {
+		return false
+	}
+	// If the iterator completed, deliver directly whatever's available
+	if it.done {
+		select {
+		case log := <-it.logs:
+			it.Event = new(FeralfileExhibitionV43OwnershipTransferred)
+			if err := it.contract.UnpackLog(it.Event, it.event, log); err != nil {
+				it.fail = err
+				return false
+			}
+			it.Event.Raw = log
+			return true
+
+		default:
+			return false
+		}
+	}
+	// Iterator still in progress, wait for either a data or an error event
+	select {
+	case log := <-it.logs:
+		it.Event = new(FeralfileExhibitionV43OwnershipTransferred)
+		if err := it.contract.UnpackLog(it.Event, it.event, log); err != nil {
+			it.fail = err
+			return false
+		}
+		it.Event.Raw = log
+		return true
+
+	case err := <-it.sub.Err():
+		it.done = true
+		it.fail = err
+		return it.Next()
+	}
+}
+
+// Error returns any retrieval or parsing error occurred during filtering.
+func (it *FeralfileExhibitionV43OwnershipTransferredIterator) Error() error {
+	return it.fail
+}
+
+// Close terminates the iteration process, releasing any pending underlying
+// resources.
+func (it *FeralfileExhibitionV43OwnershipTransferredIterator) Close() error {
+	it.sub.Unsubscribe()
+	return nil
+}
+
+// FeralfileExhibitionV43OwnershipTransferred represents a OwnershipTransferred event raised by the FeralfileExhibitionV43 contract.
+type FeralfileExhibitionV43OwnershipTransferred struct {
+	PreviousOwner common.Address
+	NewOwner      common.Address
+	Raw           types.Log // Blockchain specific contextual infos
+}
+
+// FilterOwnershipTransferred is a free log retrieval operation binding the contract event 0x8be0079c531659141344cd1fd0a4f28419497f9722a3daafe3b4186f6b6457e0.
+//
+// Solidity: event OwnershipTransferred(address indexed previousOwner, address indexed newOwner)
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43Filterer) FilterOwnershipTransferred(opts *bind.FilterOpts, previousOwner []common.Address, newOwner []common.Address) (*FeralfileExhibitionV43OwnershipTransferredIterator, error) {
+
+	var previousOwnerRule []interface{}
+	for _, previousOwnerItem := range previousOwner {
+		previousOwnerRule = append(previousOwnerRule, previousOwnerItem)
+	}
+	var newOwnerRule []interface{}
+	for _, newOwnerItem := range newOwner {
+		newOwnerRule = append(newOwnerRule, newOwnerItem)
+	}
+
+	logs, sub, err := _FeralfileExhibitionV43.contract.FilterLogs(opts, "OwnershipTransferred", previousOwnerRule, newOwnerRule)
+	if err != nil {
+		return nil, err
+	}
+	return &FeralfileExhibitionV43OwnershipTransferredIterator{contract: _FeralfileExhibitionV43.contract, event: "OwnershipTransferred", logs: logs, sub: sub}, nil
+}
+
+// WatchOwnershipTransferred is a free log subscription operation binding the contract event 0x8be0079c531659141344cd1fd0a4f28419497f9722a3daafe3b4186f6b6457e0.
+//
+// Solidity: event OwnershipTransferred(address indexed previousOwner, address indexed newOwner)
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43Filterer) WatchOwnershipTransferred(opts *bind.WatchOpts, sink chan<- *FeralfileExhibitionV43OwnershipTransferred, previousOwner []common.Address, newOwner []common.Address) (event.Subscription, error) {
+
+	var previousOwnerRule []interface{}
+	for _, previousOwnerItem := range previousOwner {
+		previousOwnerRule = append(previousOwnerRule, previousOwnerItem)
+	}
+	var newOwnerRule []interface{}
+	for _, newOwnerItem := range newOwner {
+		newOwnerRule = append(newOwnerRule, newOwnerItem)
+	}
+
+	logs, sub, err := _FeralfileExhibitionV43.contract.WatchLogs(opts, "OwnershipTransferred", previousOwnerRule, newOwnerRule)
+	if err != nil {
+		return nil, err
+	}
+	return event.NewSubscription(func(quit <-chan struct{}) error {
+		defer sub.Unsubscribe()
+		for {
+			select {
+			case log := <-logs:
+				// New log arrived, parse the event and forward to the user
+				event := new(FeralfileExhibitionV43OwnershipTransferred)
+				if err := _FeralfileExhibitionV43.contract.UnpackLog(event, "OwnershipTransferred", log); err != nil {
+					return err
+				}
+				event.Raw = log
+
+				select {
+				case sink <- event:
+				case err := <-sub.Err():
+					return err
+				case <-quit:
+					return nil
+				}
+			case err := <-sub.Err():
+				return err
+			case <-quit:
+				return nil
+			}
+		}
+	}), nil
+}
+
+// ParseOwnershipTransferred is a log parse operation binding the contract event 0x8be0079c531659141344cd1fd0a4f28419497f9722a3daafe3b4186f6b6457e0.
+//
+// Solidity: event OwnershipTransferred(address indexed previousOwner, address indexed newOwner)
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43Filterer) ParseOwnershipTransferred(log types.Log) (*FeralfileExhibitionV43OwnershipTransferred, error) {
+	event := new(FeralfileExhibitionV43OwnershipTransferred)
+	if err := _FeralfileExhibitionV43.contract.UnpackLog(event, "OwnershipTransferred", log); err != nil {
+		return nil, err
+	}
+	event.Raw = log
+	return event, nil
+}
+
+// FeralfileExhibitionV43TransferIterator is returned from FilterTransfer and is used to iterate over the raw logs and unpacked data for Transfer events raised by the FeralfileExhibitionV43 contract.
+type FeralfileExhibitionV43TransferIterator struct {
+	Event *FeralfileExhibitionV43Transfer // Event containing the contract specifics and raw log
+
+	contract *bind.BoundContract // Generic contract to use for unpacking event data
+	event    string              // Event name to use for unpacking event data
+
+	logs chan types.Log        // Log channel receiving the found contract events
+	sub  ethereum.Subscription // Subscription for errors, completion and termination
+	done bool                  // Whether the subscription completed delivering logs
+	fail error                 // Occurred error to stop iteration
+}
+
+// Next advances the iterator to the subsequent event, returning whether there
+// are any more events found. In case of a retrieval or parsing error, false is
+// returned and Error() can be queried for the exact failure.
+func (it *FeralfileExhibitionV43TransferIterator) Next() bool {
+	// If the iterator failed, stop iterating
+	if it.fail != nil {
+		return false
+	}
+	// If the iterator completed, deliver directly whatever's available
+	if it.done {
+		select {
+		case log := <-it.logs:
+			it.Event = new(FeralfileExhibitionV43Transfer)
+			if err := it.contract.UnpackLog(it.Event, it.event, log); err != nil {
+				it.fail = err
+				return false
+			}
+			it.Event.Raw = log
+			return true
+
+		default:
+			return false
+		}
+	}
+	// Iterator still in progress, wait for either a data or an error event
+	select {
+	case log := <-it.logs:
+		it.Event = new(FeralfileExhibitionV43Transfer)
+		if err := it.contract.UnpackLog(it.Event, it.event, log); err != nil {
+			it.fail = err
+			return false
+		}
+		it.Event.Raw = log
+		return true
+
+	case err := <-it.sub.Err():
+		it.done = true
+		it.fail = err
+		return it.Next()
+	}
+}
+
+// Error returns any retrieval or parsing error occurred during filtering.
+func (it *FeralfileExhibitionV43TransferIterator) Error() error {
+	return it.fail
+}
+
+// Close terminates the iteration process, releasing any pending underlying
+// resources.
+func (it *FeralfileExhibitionV43TransferIterator) Close() error {
+	it.sub.Unsubscribe()
+	return nil
+}
+
+// FeralfileExhibitionV43Transfer represents a Transfer event raised by the FeralfileExhibitionV43 contract.
+type FeralfileExhibitionV43Transfer struct {
+	From    common.Address
+	To      common.Address
+	TokenId *big.Int
+	Raw     types.Log // Blockchain specific contextual infos
+}
+
+// FilterTransfer is a free log retrieval operation binding the contract event 0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef.
+//
+// Solidity: event Transfer(address indexed from, address indexed to, uint256 indexed tokenId)
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43Filterer) FilterTransfer(opts *bind.FilterOpts, from []common.Address, to []common.Address, tokenId []*big.Int) (*FeralfileExhibitionV43TransferIterator, error) {
+
+	var fromRule []interface{}
+	for _, fromItem := range from {
+		fromRule = append(fromRule, fromItem)
+	}
+	var toRule []interface{}
+	for _, toItem := range to {
+		toRule = append(toRule, toItem)
+	}
+	var tokenIdRule []interface{}
+	for _, tokenIdItem := range tokenId {
+		tokenIdRule = append(tokenIdRule, tokenIdItem)
+	}
+
+	logs, sub, err := _FeralfileExhibitionV43.contract.FilterLogs(opts, "Transfer", fromRule, toRule, tokenIdRule)
+	if err != nil {
+		return nil, err
+	}
+	return &FeralfileExhibitionV43TransferIterator{contract: _FeralfileExhibitionV43.contract, event: "Transfer", logs: logs, sub: sub}, nil
+}
+
+// WatchTransfer is a free log subscription operation binding the contract event 0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef.
+//
+// Solidity: event Transfer(address indexed from, address indexed to, uint256 indexed tokenId)
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43Filterer) WatchTransfer(opts *bind.WatchOpts, sink chan<- *FeralfileExhibitionV43Transfer, from []common.Address, to []common.Address, tokenId []*big.Int) (event.Subscription, error) {
+
+	var fromRule []interface{}
+	for _, fromItem := range from {
+		fromRule = append(fromRule, fromItem)
+	}
+	var toRule []interface{}
+	for _, toItem := range to {
+		toRule = append(toRule, toItem)
+	}
+	var tokenIdRule []interface{}
+	for _, tokenIdItem := range tokenId {
+		tokenIdRule = append(tokenIdRule, tokenIdItem)
+	}
+
+	logs, sub, err := _FeralfileExhibitionV43.contract.WatchLogs(opts, "Transfer", fromRule, toRule, tokenIdRule)
+	if err != nil {
+		return nil, err
+	}
+	return event.NewSubscription(func(quit <-chan struct{}) error {
+		defer sub.Unsubscribe()
+		for {
+			select {
+			case log := <-logs:
+				// New log arrived, parse the event and forward to the user
+				event := new(FeralfileExhibitionV43Transfer)
+				if err := _FeralfileExhibitionV43.contract.UnpackLog(event, "Transfer", log); err != nil {
+					return err
+				}
+				event.Raw = log
+
+				select {
+				case sink <- event:
+				case err := <-sub.Err():
+					return err
+				case <-quit:
+					return nil
+				}
+			case err := <-sub.Err():
+				return err
+			case <-quit:
+				return nil
+			}
+		}
+	}), nil
+}
+
+// ParseTransfer is a log parse operation binding the contract event 0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef.
+//
+// Solidity: event Transfer(address indexed from, address indexed to, uint256 indexed tokenId)
+func (_FeralfileExhibitionV43 *FeralfileExhibitionV43Filterer) ParseTransfer(log types.Log) (*FeralfileExhibitionV43Transfer, error) {
+	event := new(FeralfileExhibitionV43Transfer)
+	if err := _FeralfileExhibitionV43.contract.UnpackLog(event, "Transfer", log); err != nil {
+		return nil, err
+	}
+	event.Raw = log
+	return event, nil
+}
diff --git a/migrations/322_feralfile_exhibition_v4_3.js b/migrations/322_feralfile_exhibition_v4_3.js
new file mode 100644
index 0000000..1c237c3
--- /dev/null
+++ b/migrations/322_feralfile_exhibition_v4_3.js
@@ -0,0 +1,48 @@
+var FeralfileExhibitionV4_3 = artifacts.require("FeralfileExhibitionV4_3");
+
+const argv = require("minimist")(process.argv.slice(2), {
+    string: [
+        "exhibition_signer",
+        "exhibition_vault",
+        "exhibition_cost_receiver",
+    ],
+});
+
+module.exports = function (deployer) {
+    let exhibition_name = argv.exhibition_name || "CRAWL";
+    let exhibition_symbol = argv.exhibition_symbol || "FERALFILE";
+    let exhibition_signer =
+        argv.exhibition_signer || "0xBEb9F810862c40A144925f568b1853d72Acc492F";
+    let exhibition_vault =
+        argv.exhibition_vault || "0x0c51e8becb17ba3203cd04d3fc31fcb90de412a1";
+    let exhibition_cost_receiver =
+        argv.exhibition_cost_receiver ||
+        "0x6732389c6d47d01487dcDc96e2Cc6BAf108452f2";
+    let burnable = argv.burnable || true;
+    let bridgeable = argv.bridgeable || true;
+    let contract_uri =
+        argv.contract_uri ||
+        "ipfs://QmZuygbgeVDZ8NBBpD3oSVUAibTTgKYnKvYWikdGp7HwNb";
+        let series_ids = argv.series_ids || [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12];
+        let max_supplies = argv.max_supplies || [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 512, 511];
+    let merge_artwork_info = argv.merge_artwork_info || {
+        singleSeriesId: 11,
+        mergedSeriesId: 12,
+        nextTokenId: "65139289060393321767190134082157117717885840752315574009980337524583053413184"
+      };
+
+    deployer.deploy(
+        FeralfileExhibitionV4_3,
+        exhibition_name,
+        exhibition_symbol,
+        burnable,
+        bridgeable,
+        exhibition_signer,
+        exhibition_vault,
+        exhibition_cost_receiver,
+        contract_uri,
+        series_ids,
+        max_supplies,
+        merge_artwork_info
+    );
+};
diff --git a/test/feralfile_exhibition_v4_3.js b/test/feralfile_exhibition_v4_3.js
new file mode 100644
index 0000000..abfadee
--- /dev/null
+++ b/test/feralfile_exhibition_v4_3.js
@@ -0,0 +1,1284 @@
+const FeralfileExhibitionV4_3 = artifacts.require("FeralfileExhibitionV4_3");
+const FeralfileVault = artifacts.require("FeralfileVault");
+
+const ZERO_ADDRESS = "0x0000000000000000000000000000000000000000";
+const COST_RECEIVER = "0x46f2B641d8702f29c45f6D06292dC34Eb9dB1801";
+const VAULT_ADDRESS = "0x7a15b36cb834aea88553de69077d3777460d73ac";
+const CONTRACT_URI = "ipfs://QmQPeNsJPyVWPFDVHb77w8G42Fvo15z4bG2X8D2GhfbSXc";
+
+contract("FeralfileExhibitionV4_3", async (accounts) => {
+    before(async function () {
+        this.signer = accounts[0];
+        this.vault = await FeralfileVault.new(this.signer);
+        this.seriesIds = [0, 1, 2, 3, 4];
+        this.seriesMaxSupply = [1, 10, 100, 1000, 10000];
+        this.mergeArtworkInfo = [1, 2, 2000000];
+
+        // Deploy multiple contracts
+        this.contracts = [];
+        for (let i = 0; i < 13; i++) {
+            let contract = await FeralfileExhibitionV4_3.new(
+                "Feral File V4 Test",
+                "FFv4",
+                true,
+                true,
+                this.signer,
+                this.vault.address,
+                COST_RECEIVER,
+                CONTRACT_URI,
+                this.seriesIds,
+                this.seriesMaxSupply,
+                this.mergeArtworkInfo,
+            );
+            this.contracts.push(contract);
+        }
+    });
+
+    it("test contract constructor", async function () {
+        const contract = this.contracts[0];
+
+        const burnable = await contract.burnable();
+        assert.ok(burnable);
+
+        const bridgeable = await contract.bridgeable();
+        assert.ok(bridgeable);
+
+        const mintable = await contract.mintable();
+        assert.ok(mintable);
+
+        const vaultAddress = await contract.vault();
+        assert.equal(vaultAddress, this.vault.address);
+
+        const signer = await contract.signer();
+        assert.equal(signer, signer);
+
+        const seriesMaxSupply1 = await contract.seriesMaxSupply(
+            this.seriesIds[0]
+        );
+        assert.equal(seriesMaxSupply1, this.seriesMaxSupply[0]);
+
+        const seriesMaxSupply2 = await contract.seriesMaxSupply(
+            this.seriesIds[1]
+        );
+        assert.equal(seriesMaxSupply2, this.seriesMaxSupply[1]);
+
+        const seriesTotalSupply1 = await contract.seriesTotalSupply(
+            this.seriesIds[0]
+        );
+        assert.equal(seriesTotalSupply1, 0);
+    });
+
+    it("test duplicate series in constructor", async function () {
+        // Deploy contract with duplicate series defined
+        let seriesIds = [0, 1, 2, 3, 1];
+        let seriesMaxSupply = [1, 1, 100, 1000, 10000];
+        let mergeArtworkInfo = [1, 2, 2000000];
+        try {
+            await FeralfileExhibitionV4_3.new(
+                "Feral File V4 Test",
+                "FFv4",
+                true,
+                true,
+                this.signer,
+                this.vault.address,
+                COST_RECEIVER,
+                CONTRACT_URI,
+                seriesIds,
+                seriesMaxSupply,
+                mergeArtworkInfo,
+            );
+        } catch (error) {
+            assert.ok(
+                error.message.includes(
+                    "FeralfileExhibitionV4: duplicate seriesId"
+                )
+            );
+        }
+    });
+
+    it("test mint artwork", async function () {
+        const contract = this.contracts[0];
+
+        // 1. mint successful
+        const owner = accounts[1];
+        const tokenId1 = this.seriesIds[3] * 1000000 + 0;
+        const tokenId2 = this.seriesIds[4] * 1000000 + 0;
+        let data = [
+            [this.seriesIds[2], tokenId1, owner],
+            [this.seriesIds[3], tokenId2, owner],
+        ];
+        const tx = await contract.mintArtworks(data);
+
+        // total supply
+        const totalSupply = await contract.totalSupply();
+        assert.equal(totalSupply, 2);
+
+        // series total supply
+        const totalSupply1 = await contract.seriesTotalSupply(
+            this.seriesIds[2]
+        );
+        const totalSupply2 = await contract.seriesTotalSupply(
+            this.seriesIds[3]
+        );
+        assert.equal(totalSupply1, 1);
+        assert.equal(totalSupply2, 1);
+
+        // owner
+        const tokenOwner = await contract.ownerOf(tokenId1);
+        assert.equal(tokenOwner, owner);
+
+        // balance
+        const balance = await contract.balanceOf(owner);
+        assert.equal(balance, 2);
+
+        // get artwork
+        const artwork = await contract.getArtwork(tokenId1);
+        assert.equal(artwork.tokenId, tokenId1);
+        assert.equal(artwork.seriesId, this.seriesIds[2]);
+
+        // get token ID from owner
+        const tokenIds = await contract.tokensOfOwner(owner);
+        assert.equal(tokenIds.length, 2);
+        assert.equal(tokenIds[0], tokenId1);
+        assert.equal(tokenIds[1], tokenId2);
+
+        // get token ID from owner & index
+        const tokenId = await contract.tokenOfOwnerByIndex(owner, 0);
+        assert.equal(tokenId, tokenId1);
+
+        // event emitted
+        const { logs } = tx;
+        assert.ok(Array.isArray(logs));
+        assert.equal(logs.length, 4);
+
+        const log0 = logs[0];
+        const log1 = logs[1];
+        assert.equal(log0.event, "Transfer");
+        assert.equal(log1.event, "NewArtwork");
+
+        // 2. mint failed
+        // series doesn't exist
+        data = [[999999, 0, owner]];
+        try {
+            await contract.mintArtworks(data);
+        } catch (error) {
+            assert.ok(
+                error.message.includes(
+                    "FeralfileExhibitionV4: seriesId doesn't exist: 999999"
+                )
+            );
+        }
+
+        // mint to zero address
+        data = [[this.seriesIds[3], 999999, ZERO_ADDRESS]];
+        try {
+            await contract.mintArtworks(data);
+        } catch (error) {
+            assert.ok(
+                error.message.includes("ERC721: mint to the zero address")
+            );
+        }
+
+        // token already minted
+        data = [[this.seriesIds[3], tokenId1, accounts[2]]];
+        try {
+            await contract.mintArtworks(data);
+        } catch (error) {
+            assert.ok(error.message.includes("ERC721: token already minted"));
+        }
+
+        // no more slots
+        data = [[this.seriesIds[2], 999999, accounts[2]]];
+        try {
+            await contract.mintArtworks(data);
+        } catch (error) {
+            assert.ok(
+                error.message.includes(
+                    "FeralfileExhibitionV4: no slots available"
+                )
+            );
+        }
+    });
+
+    it("test burn artwork", async function () {
+        const contract = this.contracts[1];
+
+        // 1. Prepare data
+        const owner = accounts[1];
+        const tokenId1 = this.seriesIds[0] * 1000000 + 0;
+        const tokenId2 = this.seriesIds[1] * 1000000 + 0;
+        const tokenId3 = this.seriesIds[2] * 1000000 + 0;
+        let mintData = [
+            [this.seriesIds[0], tokenId1, owner],
+            [this.seriesIds[1], tokenId2, owner],
+            [this.seriesIds[2], tokenId3, owner],
+        ];
+        let tx = await contract.mintArtworks(mintData);
+
+        // 2. Burn successfully
+        let burnData = [tokenId1, tokenId2];
+        tx = await contract.burnArtworks(burnData, { from: owner });
+
+        // total supply
+        const totalSupply = await contract.totalSupply();
+        assert.equal(totalSupply, 1);
+
+        // series total supply
+        const totalSupply1 = await contract.seriesTotalSupply(
+            this.seriesIds[0]
+        );
+        const totalSupply2 = await contract.seriesTotalSupply(
+            this.seriesIds[1]
+        );
+        assert.equal(totalSupply1, 0);
+        assert.equal(totalSupply2, 0);
+
+        // balance
+        const balance = await contract.balanceOf(owner);
+        assert.equal(balance, 1);
+
+        // token of owner
+        const tokenIds = await contract.tokensOfOwner(owner);
+        assert.equal(tokenIds.length, 1);
+
+        // get artwork
+        try {
+            await contract.getArtwork(tokenId1);
+        } catch (error) {
+            assert.ok(error.message.includes("ERC721: invalid token ID"));
+        }
+
+        // event emitted
+        const { logs } = tx;
+        assert.ok(Array.isArray(logs));
+        assert.equal(logs.length, 4);
+
+        const log1 = logs[0];
+        const log2 = logs[1];
+        assert.equal(log1.event, "Transfer");
+        assert.equal(log2.event, "BurnArtwork");
+
+        // 3. Burn failed
+
+        // token doesn't exist
+        try {
+            await contract.burnArtworks([111111, 222222]);
+        } catch (error) {
+            assert.ok(error.message.includes("ERC721: invalid token ID"));
+        }
+
+        // Wrong owner or approval
+        const wrongOwner = accounts[5];
+        try {
+            await contract.burnArtworks([tokenId3], {
+                from: wrongOwner,
+            });
+        } catch (error) {
+            assert.ok(
+                error.message.includes(
+                    "ERC721: caller is not token owner or approved"
+                )
+            );
+        }
+    });
+
+    it("test buy artworks successfully", async function () {
+        let contract = this.contracts[2];
+
+        // Mint for buy by crypto
+        let owner = contract.address;
+        await contract.mintArtworks([
+            [this.seriesIds[3], 3000000, owner],
+            [this.seriesIds[3], 3000001, owner],
+            [this.seriesIds[4], 4000000, owner],
+            [this.seriesIds[4], 4000001, owner],
+            [this.seriesIds[4], 4000002, owner],
+        ]);
+
+        // Generate signature
+        const expiryTime = (new Date().getTime() / 1000 + 300).toFixed(0);
+        const signParams = web3.eth.abi.encodeParameters(
+            [
+                "uint",
+                "address",
+                "tuple(uint256,uint256,uint256,address,uint256[],tuple(address,uint256)[][],bool)",
+            ],
+            [
+                BigInt(await web3.eth.getChainId()).toString(),
+                contract.address,
+                [
+                    BigInt(0.25 * 1e18).toString(),
+                    BigInt(0.02 * 1e18).toString(),
+                    expiryTime,
+                    accounts[2],
+                    [3000000, 3000001, 4000000, 4000001, 4000002],
+                    [
+                        [
+                            [accounts[3], 8000],
+                            [accounts[4], 2000],
+                        ],
+                        [
+                            [accounts[3], 8000],
+                            [accounts[4], 2000],
+                        ],
+                        [
+                            [accounts[3], 8000],
+                            [accounts[4], 2000],
+                        ],
+                        [
+                            [accounts[3], 8000],
+                            [accounts[4], 2000],
+                        ],
+                        [
+                            [accounts[3], 8000],
+                            [accounts[4], 2000],
+                        ],
+                    ],
+                    false,
+                ],
+            ]
+        );
+        const hash = web3.utils.keccak256(signParams);
+        var sig = await web3.eth.sign(hash, this.signer);
+        sig = sig.substr(2);
+        const r = "0x" + sig.slice(0, 64);
+        const s = "0x" + sig.slice(64, 128);
+        const v = web3.utils.toDecimal("0x" + sig.slice(128, 130));
+        // Generate signature
+
+        try {
+            const acc3BalanceBefore = await web3.eth.getBalance(accounts[3]);
+            const acc4BalanceBefore = await web3.eth.getBalance(accounts[4]);
+            const accCostReceiverBalanceBefore = await web3.eth.getBalance(
+                COST_RECEIVER
+            );
+
+            await contract.startSale();
+            await contract.buyArtworks(
+                r,
+                s,
+                v < 2 ? v + 27 : v, // magic 27
+                [
+                    BigInt(0.25 * 1e18).toString(),
+                    BigInt(0.02 * 1e18).toString(),
+                    expiryTime,
+                    accounts[2],
+                    [3000000, 3000001, 4000000, 4000001, 4000002],
+                    [
+                        [
+                            [accounts[3], 8000],
+                            [accounts[4], 2000],
+                        ],
+                        [
+                            [accounts[3], 8000],
+                            [accounts[4], 2000],
+                        ],
+                        [
+                            [accounts[3], 8000],
+                            [accounts[4], 2000],
+                        ],
+                        [
+                            [accounts[3], 8000],
+                            [accounts[4], 2000],
+                        ],
+                        [
+                            [accounts[3], 8000],
+                            [accounts[4], 2000],
+                        ],
+                    ],
+                    false,
+                ],
+                { from: accounts[5], value: 0.25 * 1e18 }
+            );
+            const ownerOfToken0 = await contract.ownerOf(3000000);
+            const ownerOfToken1 = await contract.ownerOf(3000001);
+            const ownerOfToken2 = await contract.ownerOf(4000000);
+            const ownerOfToken3 = await contract.ownerOf(4000001);
+            const ownerOfToken4 = await contract.ownerOf(4000002);
+            assert.equal(ownerOfToken0, accounts[2]);
+            assert.equal(ownerOfToken1, accounts[2]);
+            assert.equal(ownerOfToken2, accounts[2]);
+            assert.equal(ownerOfToken3, accounts[2]);
+            assert.equal(ownerOfToken4, accounts[2]);
+
+            const acc3BalanceAfter = await web3.eth.getBalance(accounts[3]);
+            const acc4BalanceAfter = await web3.eth.getBalance(accounts[4]);
+            const accCostReceiverBalanceAfter = await web3.eth.getBalance(
+                COST_RECEIVER
+            );
+
+            assert.equal(
+                (
+                    BigInt(acc3BalanceAfter) - BigInt(acc3BalanceBefore)
+                ).toString(),
+                BigInt((0.23 * 1e18 * 80) / 100).toString()
+            );
+            assert.equal(
+                (
+                    BigInt(acc4BalanceAfter) - BigInt(acc4BalanceBefore)
+                ).toString(),
+                BigInt((0.23 * 1e18 * 20) / 100).toString()
+            );
+            assert.equal(
+                (
+                    BigInt(accCostReceiverBalanceAfter) -
+                    BigInt(accCostReceiverBalanceBefore)
+                ).toString(),
+                BigInt(0.02 * 1e18).toString()
+            );
+        } catch (err) {
+            console.log(err);
+            assert.fail();
+        }
+    });
+
+    it("test buy artworks successfully with vault contract", async function () {
+        let contract = this.contracts[3];
+
+        // Mint for credit card
+        let owner = contract.address;
+        await contract.mintArtworks([
+            [this.seriesIds[3], 3000002, owner],
+            [this.seriesIds[3], 3000003, owner],
+            [this.seriesIds[4], 4000003, owner],
+            [this.seriesIds[4], 4000004, owner],
+        ]);
+
+        await web3.eth.sendTransaction({
+            to: this.vault.address,
+            from: accounts[8],
+            value: BigInt(0.5 * 1e18).toString(),
+        });
+        // Generate signature
+        const expiryTime = (new Date().getTime() / 1000 + 300).toFixed(0);
+        const signParams = web3.eth.abi.encodeParameters(
+            [
+                "uint",
+                "address",
+                "tuple(uint256,uint256,uint256,address,uint256[],tuple(address,uint256)[][],bool)",
+            ],
+            [
+                BigInt(await web3.eth.getChainId()).toString(),
+                contract.address,
+                [
+                    BigInt(0.22 * 1e18).toString(),
+                    BigInt(0.02 * 1e18).toString(),
+                    expiryTime,
+                    accounts[2],
+                    [3000002, 3000003, 4000003, 4000004],
+                    [
+                        [
+                            [accounts[3], 5000],
+                            [accounts[4], 5000],
+                        ],
+                        [
+                            [accounts[3], 5000],
+                            [accounts[4], 5000],
+                        ],
+                        [
+                            [accounts[3], 8000],
+                            [accounts[4], 2000],
+                        ],
+                        [
+                            [accounts[3], 8000],
+                            [accounts[4], 2000],
+                        ],
+                    ],
+                    true,
+                ],
+            ]
+        );
+        const hash = web3.utils.keccak256(signParams);
+        var sig = await web3.eth.sign(hash, this.signer);
+        sig = sig.substr(2);
+        const r = "0x" + sig.slice(0, 64);
+        const s = "0x" + sig.slice(64, 128);
+        const v = web3.utils.toDecimal("0x" + sig.slice(128, 130));
+        // Generate signature
+        try {
+            const acc3BalanceBefore = await web3.eth.getBalance(accounts[3]);
+            const acc4BalanceBefore = await web3.eth.getBalance(accounts[4]);
+            const vaultBalanceBefore = await web3.eth.getBalance(
+                this.vault.address
+            );
+            const accCostReceiverBalanceBefore = await web3.eth.getBalance(
+                COST_RECEIVER
+            );
+
+            await contract.startSale();
+            await contract.buyArtworks(
+                r,
+                s,
+                v < 2 ? v + 27 : v, // magic 27
+                [
+                    BigInt(0.22 * 1e18).toString(),
+                    BigInt(0.02 * 1e18).toString(),
+                    expiryTime,
+                    accounts[2],
+                    [3000002, 3000003, 4000003, 4000004],
+                    [
+                        [
+                            [accounts[3], 5000],
+                            [accounts[4], 5000],
+                        ],
+                        [
+                            [accounts[3], 5000],
+                            [accounts[4], 5000],
+                        ],
+                        [
+                            [accounts[3], 8000],
+                            [accounts[4], 2000],
+                        ],
+                        [
+                            [accounts[3], 8000],
+                            [accounts[4], 2000],
+                        ],
+                    ],
+                    true,
+                ],
+                { from: accounts[5], value: 0 } // itx relay
+            );
+            const ownerOfToken0 = await contract.ownerOf(3000002);
+            const ownerOfToken1 = await contract.ownerOf(3000003);
+            const ownerOfToken2 = await contract.ownerOf(4000003);
+            const ownerOfToken3 = await contract.ownerOf(4000004);
+            assert.equal(ownerOfToken0, accounts[2]);
+            assert.equal(ownerOfToken1, accounts[2]);
+            assert.equal(ownerOfToken2, accounts[2]);
+            assert.equal(ownerOfToken3, accounts[2]);
+
+            const acc3BalanceAfter = await web3.eth.getBalance(accounts[3]);
+            const acc4BalanceAfter = await web3.eth.getBalance(accounts[4]);
+            const vaultBalanceAfter = await web3.eth.getBalance(
+                this.vault.address
+            );
+            const accCostReceiverBalanceAfter = await web3.eth.getBalance(
+                COST_RECEIVER
+            );
+
+            assert.equal(
+                (
+                    BigInt(acc3BalanceAfter) - BigInt(acc3BalanceBefore)
+                ).toString(),
+                BigInt(((0.2 / 4) * 2 * 1e18 * 130) / 100).toString()
+            );
+            assert.equal(
+                (
+                    BigInt(acc4BalanceAfter) - BigInt(acc4BalanceBefore)
+                ).toString(),
+                BigInt(((0.2 / 4) * 2 * 1e18 * 70) / 100).toString()
+            );
+            assert.equal(
+                (
+                    BigInt(vaultBalanceBefore) - BigInt(vaultBalanceAfter)
+                ).toString(),
+                BigInt(0.22 * 1e18).toString()
+            );
+            assert.equal(
+                (
+                    BigInt(accCostReceiverBalanceAfter) -
+                    BigInt(accCostReceiverBalanceBefore)
+                ).toString(),
+                BigInt(0.02 * 1e18).toString()
+            );
+        } catch (err) {
+            console.log(err);
+            assert.fail();
+        }
+    });
+
+    it("test buy artworks failed with total bps over 10k", async function () {
+        let contract = this.contracts[7];
+
+        // Mint for buy by crypto
+        let owner = contract.address;
+        await contract.mintArtworks([
+            [this.seriesIds[3], 3000000, owner],
+            [this.seriesIds[3], 3000001, owner],
+            [this.seriesIds[4], 4000000, owner],
+            [this.seriesIds[4], 4000001, owner],
+            [this.seriesIds[4], 4000002, owner],
+        ]);
+
+        // Generate signature
+        const expiryTime = (new Date().getTime() / 1000 + 300).toFixed(0);
+        const signParams = web3.eth.abi.encodeParameters(
+            [
+                "uint",
+                "address",
+                "tuple(uint256,uint256,uint256,address,uint256[],tuple(address,uint256)[][],bool)",
+            ],
+            [
+                BigInt(await web3.eth.getChainId()).toString(),
+                contract.address,
+                [
+                    BigInt(0.25 * 1e18).toString(),
+                    BigInt(0.02 * 1e18).toString(),
+                    expiryTime,
+                    accounts[2],
+                    [3000000, 3000001, 4000000, 4000001, 4000002],
+                    [
+                        [
+                            [accounts[3], 8001],
+                            [COST_RECEIVER, 2000],
+                        ],
+                        [
+                            [accounts[3], 8001],
+                            [COST_RECEIVER, 2000],
+                        ],
+                        [
+                            [accounts[3], 9000],
+                            [COST_RECEIVER, 2000],
+                        ],
+                        [
+                            [accounts[3], 9000],
+                            [COST_RECEIVER, 2000],
+                        ],
+                        [
+                            [accounts[3], 8500],
+                            [COST_RECEIVER, 2000],
+                        ],
+                    ],
+                    false,
+                ],
+            ]
+        );
+        const hash = web3.utils.keccak256(signParams);
+        var sig = await web3.eth.sign(hash, this.signer);
+        sig = sig.substr(2);
+        const r = "0x" + sig.slice(0, 64);
+        const s = "0x" + sig.slice(64, 128);
+        const v = web3.utils.toDecimal("0x" + sig.slice(128, 130));
+        // Generate signature
+
+        try {
+            await contract.startSale();
+            await contract.buyArtworks(
+                r,
+                s,
+                v < 2 ? v + 27 : v, // magic 27
+                [
+                    BigInt(0.25 * 1e18).toString(),
+                    BigInt(0.02 * 1e18).toString(),
+                    expiryTime,
+                    accounts[2],
+                    [3000000, 3000001, 4000000, 4000001, 4000002],
+                    [
+                        [
+                            [accounts[3], 8001],
+                            [COST_RECEIVER, 2000],
+                        ],
+                        [
+                            [accounts[3], 8001],
+                            [COST_RECEIVER, 2000],
+                        ],
+                        [
+                            [accounts[3], 9000],
+                            [COST_RECEIVER, 2000],
+                        ],
+                        [
+                            [accounts[3], 9000],
+                            [COST_RECEIVER, 2000],
+                        ],
+                        [
+                            [accounts[3], 8500],
+                            [COST_RECEIVER, 2000],
+                        ],
+                    ],
+                    false,
+                ],
+                { from: accounts[5], value: 0.25 * 1e18 }
+            );
+        } catch (error) {
+            assert.ok(
+                error.message.includes(
+                    "FeralfileExhibitionV4: total bps over 10,000"
+                )
+            );
+        }
+    });
+
+    it("test start/stop and burn, pause/resume sale", async function () {
+        const contract = this.contracts[4];
+
+        // Resume the sale is not allowed before starting the sale
+        try {
+            await contract.resumeSale();
+        } catch (error) {
+            assert.ok(
+                error.message.includes(
+                    "FeralfileExhibitionV4: mintable required to be false"
+                )
+            );
+        }
+
+        // Pause the sale is not allowed before starting the sale
+        try {
+            await contract.pauseSale();
+        } catch (error) {
+            assert.ok(
+                error.message.includes(
+                    "FeralfileExhibitionV4: mintable required to be false"
+                )
+            );
+        }
+
+        // Mint new tokens
+        const owner = contract.address;
+        const tokenIDs = [4000997, 4000998, 4000999];
+        await contract.mintArtworks([
+            [this.seriesIds[4], tokenIDs[0], owner],
+            [this.seriesIds[4], tokenIDs[1], owner],
+            [this.seriesIds[4], tokenIDs[2], owner],
+        ]);
+
+        // Start the sale
+        await contract.startSale();
+
+        // Validate mintable flag to be false
+        const mintable = await contract.mintable();
+        assert.equal(mintable, false);
+
+        // Validate selling flag to be true
+        let selling = await contract.selling();
+        assert.equal(selling, true);
+
+        // Pause and resume the sale
+        try {
+            await contract.pauseSale();
+
+            // Validate selling flag to be false
+            selling = await contract.selling();
+            assert.equal(selling, false);
+
+            await contract.resumeSale();
+
+            // Validate selling flag to be true
+            selling = await contract.selling();
+            assert.equal(selling, true);
+        } catch (error) {
+            console.log(error);
+            assert.fail();
+        }
+
+        // Stop sale and burn remaining tokens
+        try {
+            await contract.stopSaleAndBurn();
+        } catch (error) {
+            console.log(error);
+            assert.fail();
+        }
+
+        // Validate selling flag to be false
+        selling = await contract.selling();
+        assert.equal(selling, false);
+
+        // Validate tokens were burned
+        for (let i = 0; i < tokenIDs.length; i++) {
+            try {
+                await contract.getArtwork(tokenIDs[i]);
+            } catch (error) {
+                assert.ok(error.message.includes("ERC721: invalid token ID"));
+            }
+        }
+
+        // Resume the sale is not allowed since there is no token left for sale
+        try {
+            await contract.resumeSale();
+        } catch (error) {
+            assert.ok(
+                error.message.includes(
+                    "FeralfileExhibitionV4: No token owned by the contract"
+                )
+            );
+        }
+    });
+
+    it("test start/stop and transfer remaining token", async function () {
+        const contract = this.contracts[5];
+
+        // Mint new tokens
+        const tokenIDs = [3000997, 3000998, 4000998, 4000999];
+        await contract.mintArtworks([
+            [this.seriesIds[3], tokenIDs[0], contract.address],
+            [this.seriesIds[3], tokenIDs[1], contract.address],
+            [this.seriesIds[4], tokenIDs[2], contract.address],
+            [this.seriesIds[4], tokenIDs[3], contract.address],
+        ]);
+
+        // Start the sale
+        await contract.startSale();
+
+        const owner1 = accounts[1];
+        const owner2 = accounts[2];
+
+        // 1. Stop the sale and transfer remaining tokens failed
+        try {
+            await contract.stopSaleAndTransfer(
+                [this.seriesIds[3], this.seriesIds[4]],
+                [owner1]
+            );
+        } catch (error) {
+            assert.ok(
+                error.message.includes(
+                    "FeralfileExhibitionV4: seriesIds length is different from recipientAddresses"
+                )
+            );
+        }
+
+        try {
+            await contract.stopSaleAndTransfer(
+                [this.seriesIds[1], this.seriesIds[2]],
+                []
+            );
+        } catch (error) {
+            assert.ok(
+                error.message.includes(
+                    "FeralfileExhibitionV4: seriesIds or recipientAddresses length is zero"
+                )
+            );
+        }
+
+        try {
+            await contract.stopSaleAndTransfer(
+                [this.seriesIds[1], this.seriesIds[2]],
+                [owner1, owner2]
+            );
+        } catch (error) {
+            assert.ok(
+                error.message.includes(
+                    "FeralfileExhibitionV4: Token for sale balance has to be zero"
+                )
+            );
+        }
+
+        // 2. Stop the sale and transfer remaining token successful
+        try {
+            await contract.stopSaleAndTransfer(
+                [this.seriesIds[3], this.seriesIds[4]],
+                [owner1, owner2]
+            );
+        } catch (error) {
+            assert.fail();
+        }
+
+        // Validate balances
+        const contractBal = await contract.balanceOf(contract.address);
+        assert.equal(contractBal, 0);
+
+        const owner1Bal = await contract.balanceOf(owner1);
+        assert.equal(owner1Bal, 2);
+
+        const owner2Bal = await contract.balanceOf(owner2);
+        assert.equal(owner2Bal, 2);
+    });
+
+    it("test transfer token", async function () {
+        const contract = this.contracts[6];
+
+        // mint tokens
+        const owner1 = accounts[1];
+        const owner2 = accounts[2];
+        const tokenId1 = this.seriesIds[3] * 1000000 + 555;
+        const tokenId2 = this.seriesIds[3] * 1000000 + 556;
+        const tokenId3 = this.seriesIds[4] * 1000000 + 555;
+        const tokenId4 = this.seriesIds[4] * 1000000 + 556;
+        let data = [
+            [this.seriesIds[3], tokenId1, owner1],
+            [this.seriesIds[3], tokenId2, owner1],
+            [this.seriesIds[4], tokenId3, owner2],
+            [this.seriesIds[4], tokenId4, owner2],
+        ];
+
+        try {
+            await contract.mintArtworks(data);
+        } catch (error) {
+            console.log(error);
+            assert.fail();
+        }
+
+        // transfer tokens
+        // 1. Transfer to other address rather than contract
+        try {
+            await contract.transferFrom(owner1, owner2, tokenId1, {
+                from: owner1,
+            });
+        } catch (error) {
+            console.log(error);
+            assert.fail();
+        }
+
+        // Validate new owner of token
+        let owner = await contract.ownerOf(tokenId1);
+        assert.equal(owner, owner2);
+
+        // 2. Transfer to contract address
+        try {
+            await contract.transferFrom(owner2, owner1, tokenId1, {
+                from: owner2,
+            });
+        } catch (error) {
+            assert.ok(
+                error.message.includes(
+                    "FeralfileExhibitionV4: Contract isn't allowed to receive token"
+                )
+            );
+        }
+
+        // 3. Transfer as operator
+        // TODO add later
+
+        // 4. Transfer as approval
+        // TODO add later
+    });
+
+    it("test set advance setting failed because address in use", async function () {
+        const contract = this.contracts[8];
+        const advanceAddresses = [accounts[3], accounts[4]];
+        const advanceAmounts = [
+            web3.utils.toWei("0.3", "ether"),
+            web3.utils.toWei("0.8", "ether"),
+        ];
+
+        // 1. Set advance setting
+        await contract.setAdvanceSetting(advanceAddresses, advanceAmounts);
+
+        const advanceAmount0 = await contract.advances(advanceAddresses[0]);
+        assert.equal(advanceAmount0, advanceAmounts[0]);
+        const advanceAmount1 = await contract.advances(advanceAddresses[1]);
+        assert.equal(advanceAmount1, advanceAmounts[1]);
+
+        const updatedAddresses = [advanceAddresses[0], accounts[5]];
+        const updatedAmounts = [
+            web3.utils.toWei("0.5", "ether"),
+            web3.utils.toWei("1", "ether"),
+        ];
+
+        // 2. Update advance setting
+        try {
+            await contract.setAdvanceSetting(updatedAddresses, updatedAmounts);
+        } catch (error) {
+            console.log(error);
+            assert.equal(error.reason, "Custom error (could not decode)");
+        }
+    });
+
+    it("test replace advance addresses successfully", async function () {
+        const contract = this.contracts[9];
+        const advanceAddresses = [accounts[3], accounts[4]];
+        const advanceAmounts = [
+            web3.utils.toWei("0.3", "ether"),
+            web3.utils.toWei("0.8", "ether"),
+        ];
+
+        // 1. Set advance setting
+        await contract.setAdvanceSetting(advanceAddresses, advanceAmounts);
+
+        const advanceAmount0 = await contract.advances(advanceAddresses[0]);
+        assert.equal(advanceAmount0, advanceAmounts[0]);
+        const advanceAmount1 = await contract.advances(advanceAddresses[1]);
+        assert.equal(advanceAmount1, advanceAmounts[1]);
+
+        const oldAddresses = [advanceAddresses[0]];
+        const newAddresses = [accounts[7]];
+
+        // 2. Replace advance addresses
+        await contract.replaceAdvanceAddresses(oldAddresses, newAddresses);
+
+        const newAdvanceAmount0 = await contract.advances(newAddresses[0]);
+        assert.equal(newAdvanceAmount0, advanceAmounts[0]);
+    });
+
+    it("test advance amount", async function () {
+        const costReceiver = accounts[6];
+        const seriesIds = [0, 1, 2];
+        const seriesMaxSupply = [100, 100, 100];
+        const mergeArtworkInfo = [1, 2, 2000000];
+        const advanceAddresses = [accounts[3], accounts[4]];
+        const advanceAmounts = [
+            web3.utils.toWei("0.3", "ether"),
+            web3.utils.toWei("0.8", "ether"),
+        ];
+        const contract = await FeralfileExhibitionV4_3.new(
+            "Feral File V4 Test",
+            "FFv4",
+            true,
+            true,
+            this.signer,
+            this.vault.address,
+            costReceiver,
+            CONTRACT_URI,
+            seriesIds,
+            seriesMaxSupply,
+            mergeArtworkInfo,
+        );
+
+        // 0. set advance setting
+        await contract.setAdvanceSetting(advanceAddresses, advanceAmounts);
+
+        // 1. mint artworks
+        const tokenID1 = seriesIds[0] * 1000000 + 0;
+        const tokenID2 = seriesIds[0] * 1000000 + 1;
+        const tokenID3 = seriesIds[1] * 1000000 + 0;
+        const tokenID4 = seriesIds[1] * 1000000 + 1;
+        const data = [
+            [seriesIds[0], tokenID1, contract.address],
+            [seriesIds[0], tokenID2, contract.address],
+            [seriesIds[1], tokenID3, contract.address],
+            [seriesIds[1], tokenID4, contract.address],
+        ];
+        await contract.mintArtworks(data);
+
+        // 2. buy artworks
+        const expiryTime = (new Date().getTime() / 1000 + 300).toFixed(0);
+        const signParams = web3.eth.abi.encodeParameters(
+            [
+                "uint",
+                "address",
+                "tuple(uint256,uint256,uint256,address,uint256[],tuple(address,uint256)[][],bool)",
+            ],
+            [
+                BigInt(await web3.eth.getChainId()).toString(),
+                contract.address,
+                [
+                    web3.utils.toWei("1", "ether"),
+                    "0",
+                    expiryTime,
+                    accounts[2],
+                    [tokenID1, tokenID2, tokenID3, tokenID4],
+                    [
+                        [
+                            [accounts[3], 7000],
+                            [costReceiver, 2000],
+                            [accounts[5], 1000], // Curator
+                        ],
+                        [
+                            [accounts[3], 7000],
+                            [costReceiver, 2000],
+                            [accounts[5], 1000],
+                        ],
+                        [
+                            [accounts[4], 7000],
+                            [costReceiver, 2000],
+                            [accounts[5], 1000],
+                        ],
+                        [
+                            [accounts[4], 7000],
+                            [costReceiver, 2000],
+                            [accounts[5], 1000],
+                        ],
+                    ],
+                    false,
+                ],
+            ]
+        );
+        const hash = web3.utils.keccak256(signParams);
+        var sig = await web3.eth.sign(hash, this.signer);
+        sig = sig.substr(2);
+        const r = "0x" + sig.slice(0, 64);
+        const s = "0x" + sig.slice(64, 128);
+        const v = web3.utils.toDecimal("0x" + sig.slice(128, 130));
+
+        try {
+            const acc3BalanceBefore = await web3.eth.getBalance(accounts[3]);
+            const acc4BalanceBefore = await web3.eth.getBalance(accounts[4]);
+            const acc5BalanceBefore = await web3.eth.getBalance(accounts[5]);
+            const accCostReceiverBalanceBefore = await web3.eth.getBalance(
+                costReceiver
+            );
+
+            await contract.startSale();
+            await contract.buyArtworks(
+                r,
+                s,
+                v < 2 ? v + 27 : v, // magic 27
+                [
+                    web3.utils.toWei("1", "ether"),
+                    "0",
+                    expiryTime,
+                    accounts[2],
+                    [tokenID1, tokenID2, tokenID3, tokenID4],
+                    [
+                        [
+                            [accounts[3], 7000],
+                            [costReceiver, 2000],
+                            [accounts[5], 1000], // Curator
+                        ],
+                        [
+                            [accounts[3], 7000],
+                            [costReceiver, 2000],
+                            [accounts[5], 1000],
+                        ],
+                        [
+                            [accounts[4], 7000],
+                            [costReceiver, 2000],
+                            [accounts[5], 1000],
+                        ],
+                        [
+                            [accounts[4], 7000],
+                            [costReceiver, 2000],
+                            [accounts[5], 1000],
+                        ],
+                    ],
+                    false,
+                ],
+                { from: accounts[2], value: 1 * 1e18 }
+            );
+            const ownerOfToken1 = await contract.ownerOf(tokenID1);
+            const ownerOfToken2 = await contract.ownerOf(tokenID2);
+            const ownerOfToken3 = await contract.ownerOf(tokenID3);
+            const ownerOfToken4 = await contract.ownerOf(tokenID4);
+            assert.equal(ownerOfToken1, accounts[2]);
+            assert.equal(ownerOfToken2, accounts[2]);
+            assert.equal(ownerOfToken3, accounts[2]);
+            assert.equal(ownerOfToken4, accounts[2]);
+
+            const acc3BalanceAfter = await web3.eth.getBalance(accounts[3]);
+            const acc4BalanceAfter = await web3.eth.getBalance(accounts[4]);
+            const acc5BalanceAfter = await web3.eth.getBalance(accounts[5]);
+            const accCostReceiverBalanceAfter = await web3.eth.getBalance(
+                costReceiver
+            );
+
+            // Revenue per item is 1 / 4 = 0.25
+            // Revenues is 0.25 * 2 then deduct advance amount 0.3 => received 0.2 * 70% = 0.14
+            assert.equal(
+                (
+                    BigInt(acc3BalanceAfter) - BigInt(acc3BalanceBefore)
+                ).toString(),
+                web3.utils.toWei("0.14", "ether")
+            );
+            // Revenue is 0.25 * 2 then deduct advance amount 0.8 => received 0
+            assert.equal(
+                (
+                    BigInt(acc4BalanceAfter) - BigInt(acc4BalanceBefore)
+                ).toString(),
+                "0"
+            );
+            // revenue is 10% of price 0.2 * 10% = 0.02
+            assert.equal(
+                (
+                    BigInt(acc5BalanceAfter) - BigInt(acc5BalanceBefore)
+                ).toString(),
+                web3.utils.toWei("0.02", "ether")
+            );
+            // revenue is 20% of price 0.2 = 0.04 and 0.8 advance amount
+            assert.equal(
+                (
+                    BigInt(accCostReceiverBalanceAfter) -
+                    BigInt(accCostReceiverBalanceBefore)
+                ).toString(),
+                web3.utils.toWei("0.84", "ether")
+            );
+        } catch (err) {
+            console.log(err);
+            assert.fail();
+        }
+    });
+
+    it("test merge artworks successfully", async function () {
+        const contract = this.contracts[11];
+
+        // 1. Prepare data
+        const owner = accounts[1];
+        const tokenId1 = this.seriesIds[1] * 1000000 + 0;
+        const tokenId2 = this.seriesIds[1] * 1000000 + 1;
+        const tokenId3 = this.seriesIds[1] * 1000000 + 2;
+        let mintData = [
+            [this.seriesIds[1], tokenId1, owner],
+            [this.seriesIds[1], tokenId2, owner],
+            [this.seriesIds[1], tokenId3, owner],
+        ];
+        let tx = await contract.mintArtworks(mintData);
+
+        // 2. start merging
+        await contract.startMerging();
+        tx = await contract.mergeArtworks([tokenId1, tokenId2], { from: owner });
+
+        // total supply
+        const totalSupply = await contract.totalSupply();
+        assert.equal(totalSupply, 2);
+
+        // series total supply
+        const totalSupply1 = await contract.seriesTotalSupply(
+            this.seriesIds[1]
+        );
+        const totalSupply2 = await contract.seriesTotalSupply(
+            this.seriesIds[2]
+        );
+        assert.equal(totalSupply1, 1);
+        assert.equal(totalSupply2, 1);
+
+        // balance
+        const balance = await contract.balanceOf(owner);
+        assert.equal(balance, 2);
+
+        // token of owner
+        const tokenIds = await contract.tokensOfOwner(owner);
+        assert.equal(tokenIds.length, 2);
+
+        // event emitted
+        const { logs } = tx;
+        assert.ok(Array.isArray(logs));
+        assert.equal(logs.length, 6);
+
+        assert.equal(logs[0].event, "Transfer");
+        assert.equal(logs[1].event, "BurnArtwork");
+        assert.equal(logs[2].event, "Transfer");
+        assert.equal(logs[3].event, "BurnArtwork");
+        assert.equal(logs[4].event, "Transfer");
+        assert.equal(logs[5].event, "NewArtwork");
+    });
+
+    it("test merge artworks failed invalid owner", async function () {
+        const contract = this.contracts[10];
+
+        // 1. Prepare data
+        const owner = accounts[1];
+        const tokenId1 = this.seriesIds[1] * 1000000 + 0;
+        const tokenId2 = this.seriesIds[1] * 1000000 + 1;
+        const tokenId3 = this.seriesIds[1] * 1000000 + 2;
+        let mintData = [
+            [this.seriesIds[1], tokenId1, owner],
+            [this.seriesIds[1], tokenId2, accounts[2]],
+            [this.seriesIds[1], tokenId3, owner],
+        ];
+        let tx = await contract.mintArtworks(mintData);
+
+        // 2. start merging
+        await contract.startMerging();
+
+        try {
+            tx = await contract.mergeArtworks([tokenId1, tokenId2], { from: owner });
+            assert.fail("Expected revert not received");
+        } catch (error) {
+            assert.ok(error.message.includes("revert"));
+        }
+    });
+
+    it("test merge artworks failed invalid seriesID", async function () {
+        const contract = this.contracts[12];
+
+        // 1. Prepare data
+        const owner = accounts[1];
+        const tokenId1 = this.seriesIds[1] * 1000000 + 0;
+        const tokenId2 = this.seriesIds[1] * 1000000 + 1;
+        const tokenId3 = this.seriesIds[3] * 1000000 + 2;
+        let mintData = [
+            [this.seriesIds[1], tokenId1, owner],
+            [this.seriesIds[1], tokenId2, owner],
+            [this.seriesIds[1], tokenId3, owner],
+        ];
+        let tx = await contract.mintArtworks(mintData);
+
+        // 2. start merging
+        await contract.startMerging();
+
+        try {
+            tx = await contract.mergeArtworks([tokenId1, tokenId3], { from: owner });
+            assert.fail("Expected revert not received");
+        } catch (error) {
+            assert.ok(error.message.includes("revert"));
+        }
+    });
+});