Wallets & custody · Maintained 2026

Wallet fingerprints

Wallet and master-key fingerprints are short identifiers used by wallet standards and PSBT workflows to help identify key origins; they are identifiers, not secret authentication factors.

Context

Why it matters

Wallet and master-key fingerprints are short identifiers used by wallet standards and PSBT workflows to help identify key origins; they are identifiers, not secret authentication factors.

Canonical knowledge

What California Bitcoin maintains

Wallet and master-key fingerprints are short identifiers used by wallet standards and PSBT workflows to help identify key origins; they are identifiers, not secret authentication factors.

Primary and technical sources

Evidence before assertion

BIP32: Hierarchical Deterministic Wallets

Bitcoin BIPs

Tier 1 · primary BIP174: Partially Signed Bitcoin Transaction Format

Bitcoin BIPs

Tier 1 · primary

Related concepts

Continue through the knowledge graph

HD wallets Partially Signed Bitcoin Transactions Output descriptors

Machine accessAgent-ready

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