ACon² is an adpative conformal consensus algorithm for provable blockchain oracles. In particular, ACon² returns a set of labels (e.g., a range of a token price) that likely contains a true label (e.g., a true token price) under distribution shift and adversarial manipulation.
For full details on ACon², please check our paper on "ACon²: Adaptive Conformal Consensus for Provable Blockchain Oracles," published at USENIX Security '23.