Ask/Knowledge Atlas/Transaction malleability
Transactions · Maintained 2026

Transaction malleability

Transaction malleability is the ability for some transaction data to be changed without invalidating its economic effect; SegWit fixed important third-party txid malleability for SegWit spends and enabled more reliable payment-channel designs.

Context

Why it matters

Transaction malleability is the ability for some transaction data to be changed without invalidating its economic effect; SegWit fixed important third-party txid malleability for SegWit spends and enabled more reliable payment-channel designs.

Canonical knowledge

What California Bitcoin maintains

  • Transaction malleability is the ability for some transaction data to be changed without invalidating its economic effect; SegWit fixed important third-party txid malleability for SegWit spends and enabled more reliable payment-channel designs.

Primary and technical sources

Evidence before assertion
BIP141: Segregated Witness

Bitcoin BIPs

Tier 1 · primary

Related concepts

Continue through the knowledge graph
Segregated WitnessLightning NetworkInputs and outputs
Machine accessAgent-ready
https://californiabitcoin.org/api/agent/v1/topic/transaction-malleabilityhttps://californiabitcoin.org/api/agent/v1/search?q=Transaction%20malleabilityhttps://californiabitcoin.org/api/agent/v1/coveragehttps://californiabitcoin.org/api/agent/v1/sources