What is Coin control?
A wallet feature that lets you choose which specific UTXOs a transaction spends.
By default wallets pick inputs automatically, which can merge coins from unrelated sources and link them publicly. Coin control lets you keep them separate.
It is also a cost tool: consolidating many small inputs during a low-fee period reduces what future spends will cost.
Related terms
UTXO
An unspent transaction output: a discrete chunk of bitcoin locked to a condition. Bitcoin has no account…
Transactions & feesDust
A UTXO so small that spending it would cost more in fees than it is worth.
Security & scamsPrivacy (on-chain)
Bitcoin is pseudonymous, not anonymous: every transaction is public forever, and addresses can often be…
This definition is part of the Bitcoin Logical glossary. For the fuller explanation, start with Learn, or see the live numbers on The Bitcoin Signal.