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15 votes
6 answers
5k views

Why is there "Change" in Bitcoins?

I have read about a change address and wondered why there even is the concept of change? Let's say I received 1 BTC from some person A and I want to send 0.4 BTC to another person B, afterwards. From ...
André Kuhlmann's user avatar
2 votes
1 answer
341 views

How is the UTXOs of each partially-spent TxIn determined?

My current understanding of a transaction is as follows: a transaction (Tx) can have multiple inputs (which are previous unspent transactions = UTXOs), let's call them the TxIn a Tx can have multiple ...
Jean Monet's user avatar