Protocol & Consensus • Estimated 50m

Taproot Annex

protocol.annex

The annex is an optional witness element committed by Taproot signatures but ignored by script execution. It provides forward-compatibility space for future soft-fork semantics.

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Curated resources (3)

• Bitcoin Optech Topic: Annex (article) Practical review of annex behavior and implementation context.
• BIP 341: Taproot (article) Formal definition of annex commitment rules in Taproot spends.
• Programming Bitcoin (book) Script and witness structure background for Taproot-era spending.

Direct prerequisites (1)

• Taproot

Direct dependents (0)

• None

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