Wallets • Estimated 45m

Proof of Reserves

custody.proof-of-reserves

Proof of Reserves lets a custodian demonstrate control of a stated set or amount of Bitcoin at a point in time using a verifiable signed construction. It can provide evidence of asset control, but does not by itself prove liabilities, solvency, or that funds will remain available.

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Curated resources (3)

• BIP 127: Simple Proof-of-Reserves Transactions (article) Canonical specification for a standardized proof format and its PSBT extension. It documents privacy and scope limitations.
• Provisions: Privacy-Preserving Proofs of Solvency for Bitcoin Exchanges (article) Research context for proving solvency with stronger privacy properties than simple control-of-funds proofs.
• Mastering Bitcoin (book) Background on Bitcoin transactions, signatures, UTXOs, and wallet control that supports understanding reserve proofs.

Direct prerequisites (2)

• Generic Signed Message Format
• PSBT Workflow

Direct dependents (0)

• None

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