Protocol & Consensus • Estimated 75m

Cross-Input Signature Aggregation (CISA)

protocol.cross-input-signature-aggregation

CISA aggregates signatures across multiple inputs to reduce weight and improve coordination efficiency. It introduces new accounting and policy considerations for batch spenders.

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Curated resources (3)

• Bitcoin Optech Topic: CISA (article) Current proposals and constraints.
• BTC Transcripts: cross-input-signature-aggregation (article) Debates around fee savings and safety assumptions.
• Mastering Bitcoin (book) Comprehensive reference for Script, transactions, and advanced protocol design.

Direct prerequisites (1)

• Adaptor Signatures

Direct dependents (0)

• None

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