O que é Change output?
The output that returns leftover value to the sender when a spent UTXO is larger than the amount being sent.
Because UTXOs are consumed whole, sending 0.1 BTC from a 0.5 BTC UTXO produces two outputs: 0.1 to the recipient and roughly 0.4 back to a change address you control.
Wallets normally use a fresh address for change, which is good privacy practice but confuses newcomers reading their own transactions in a block explorer.
Termos relacionados
UTXO
An unspent transaction output: a discrete chunk of bitcoin locked to a condition. Bitcoin has no account…
Como funcionaTransaction
A signed instruction consuming one or more UTXOs and creating new ones. Once confirmed it cannot be reversed.
Keys & custodyAddress
A string encoding the conditions under which an output can be spent. Bitcoin's equivalent of an account…
Esta definição faz parte do glossário da Bitcoin Logical. Para a explicação completa, comece por Aprender, ou veja os números ao vivo em O Sinal Bitcoin.