CISA (Cross-Input Signature Aggregation)
Protocol● Common
A proposed feature enabling multiple inputs in a transaction to share a single aggregated signature. Would reduce transaction sizes significantly, especially for consolidations and coinjoins, improving privacy and efficiency.
Technical Notes
Schnorr enables: signers produce partial sigs, aggregate into single 64-byte sig covering all inputs. Half-aggregation (BIP proposed): non-interactive, 32-byte savings per additional input. Full aggregation: requires signer coordination.
Metadata
Visibility: Public
Created:1/3/2026by System