Coin Control
wallet · privacy
Manual selection of specific UTXOs when creating a transaction.
Coin control exposes the wallet's input-selection decision so a user can include, exclude, freeze, label, or consolidate particular UTXOs. The choice affects transaction size, fees, change, privacy, and which remaining outputs are available later.
Manual selection can prevent unwanted links, but careless selection can also combine identities, create uneconomical change, or spend a privacy-preserving output with a publicly attributed one. Wallet defaults may be safer when the user cannot evaluate those consequences.
Related terms
Unspent Transaction Output (UTXO)
→A discrete spendable output on a UTXO blockchain, similar to a digital coin that must be spent whole.
technical · blockchain
CashFusion
→An opt-in Bitcoin Cash CoinJoin protocol that combines many inputs and differently sized outputs to complicate transaction-link analysis.
privacy · bitcoin-cash
Dust
→Dust is a tiny coin or token balance that is uneconomical to spend because fees or policy rules outweigh its value.
concept · blockchain · cryptocurrency · security