Ask/Knowledge Atlas/Signature hash types
Transactions · Maintained 2026

Signature hash types

Bitcoin signature hash modes determine which transaction fields a signature commits to, enabling different transaction-coordination patterns while requiring careful wallet and protocol handling.

Context

Why it matters

Bitcoin signature hash modes determine which transaction fields a signature commits to, enabling different transaction-coordination patterns while requiring careful wallet and protocol handling.

Canonical knowledge

What California Bitcoin maintains

  • Bitcoin signature hash modes determine which transaction fields a signature commits to, enabling different transaction-coordination patterns while requiring careful wallet and protocol handling.

Primary and technical sources

Evidence before assertion
Bitcoin Developer Documentation

Bitcoin.org

Tier — · technicalBIP341: Taproot

Bitcoin BIPs

Tier 1 · primary

Related concepts

Continue through the knowledge graph
Digital signaturesBitcoin ScriptTaproot
Machine accessAgent-ready
https://californiabitcoin.org/api/agent/v1/topic/sighashhttps://californiabitcoin.org/api/agent/v1/search?q=Signature%20hash%20typeshttps://californiabitcoin.org/api/agent/v1/coveragehttps://californiabitcoin.org/api/agent/v1/sources