Why a Bitcoin Payment Sends “Change” Back
A Bitcoin wallet does not simply subtract from one running balance; it spends whole unspent transaction outputs (UTXOs).
Suppose you control one 0.4 BTC output and pay 0.3 BTC. The transaction consumes the full 0.4 BTC output, creates a 0.3 BTC output for the recipient, and sends the remainder back to you as a change output, after the network fee. The original output is now spent; the new outputs can later be used as inputs.
That is why a wallet balance is a collection of spendable outputs, not one digital coin. “Change” is part of the transaction—not a second payment.
My takeaway: understanding UTXOs makes Bitcoin transactions easier to read. Does your wallet show change outputs clearly?
Source: Binance Academy — https://www.binance.com/en/academy/glossary/unspent-transaction-output-utxo
#Bitcoin #UTXO #CryptoEducation
A Bitcoin wallet does not simply subtract from one running balance; it spends whole unspent transaction outputs (UTXOs).
Suppose you control one 0.4 BTC output and pay 0.3 BTC. The transaction consumes the full 0.4 BTC output, creates a 0.3 BTC output for the recipient, and sends the remainder back to you as a change output, after the network fee. The original output is now spent; the new outputs can later be used as inputs.
That is why a wallet balance is a collection of spendable outputs, not one digital coin. “Change” is part of the transaction—not a second payment.
My takeaway: understanding UTXOs makes Bitcoin transactions easier to read. Does your wallet show change outputs clearly?
Source: Binance Academy — https://www.binance.com/en/academy/glossary/unspent-transaction-output-utxo
#Bitcoin #UTXO #CryptoEducation