Protocol & Consensus • Estimated 35m

Merkelized Alternative Script Trees (MAST)

protocol.mast

MAST commits to multiple Bitcoin Script spending branches in a Merkle tree while revealing only the branch used to spend. It reduces revealed policy and witness data without hiding the committed alternatives from verification.

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Curated resources (3)

• Bitcoin Dev Project: MAST explained simply (article) Short learner-facing explanation of Merkleized Alternative Script Trees.
• Bitcoin Optech Topic: MAST (article) Technical context for script-tree commitments and selective branch revelation.
• Programming Bitcoin (book) Worked background on Bitcoin scripts, hashing, and Merkle commitments.

Direct prerequisites (2)

• Bitcoin Script
• Merkle Trees

Direct dependents (0)

• None

Canonical site description: Interactive Bitcoin knowledge graph with prerequisites, curated resources, and structured topic pages.