Wallets • Estimated 35m

Coin Selection

custody.coin-selection

Coin selection is the process a wallet uses to choose which UTXOs fund a payment. It balances fee cost, change creation, and privacy tradeoffs before signing or broadcasting a transaction.

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Curated resources (4)

• Bitcoin Optech Topic: Coin Selection (article) Concise overview of why wallets choose different UTXO sets and how fee and privacy pressures shape the algorithms.
• Bitcoin Design Guide: Coin Selection (article) Clear product and UX framing for the tradeoffs wallets expose or hide from users.
• Bitcoin Core RPC: fundrawtransaction (article) Concrete implementation surface where automatic funding and selection behavior becomes visible.
• Mastering Bitcoin (book) Broad technical reference for UTXOs, change outputs, and wallet transaction construction.

Direct prerequisites (1)

• Fee Market

Direct dependents (0)

• None

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