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In the blockchain, every transaction has a transactionId where does this come from?
How is the transactionId generated?
Answers
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TXID is the sha256 hash of the signed transaction, used to uniquely identify a particular transaction.
When you create/sign a transaction that hash will be generated with your transaction.
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The TXID is the hash of the transaction.
So it's the digital signature? Is there a comprehensive website that I can use to read up on bitcoin? From a programmers point of view. – Kyle Graham – 2018-03-15T20:28:08.560
Yeah, There's a book called Mastering Bitcoin by Andreas Antonopoulos , Best book ever. – Adam – 2018-03-15T20:29:36.017