Fairgate Introduces WISCH: Efficient Signing with Correlated Signatures
Fairgate has published WISCH, a new protocol for efficient data signing. By generating correlated signatures, WISCH cuts on-chain costs by at least 5× compared to Winternitz and 10× compared to Lamport and GC Wire labels, while maintaining strong UC-based security proofs.
fairgate.io/publications
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WISCH: Efficient Data Signing via Correlated Signatures
The protocol is built on a clean separation between two components:
· On-chain verification core – designed so that costs depend only on the number of revealed items, not on the size of the entire message space.
· Off-chain preparation – where computational work takes place before verification, keeping blockchain operations efficient.