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Results tagged with sighash
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user 30668
5
votes
Accepted
Is the Z value generated before the (r, s) values?
If by z you mean the hash of the message, then yes, z is required to compute s. Therefore, strictly speaking, you need to compute it before s, but not necessarily before r.
https://en.wikipedia.org/wi …
2
votes
Why is the signature hash different for each input in a multi-input transaction?
I'd been wondering about this for quite a long time, since it was the reason behind the quadratic hashing problem. The best answer I found so far is the one given by Pieter Wuille in the Bitcoin talk …
2
votes
Hash-Preimage Construction for a two p2pkh Input transaction?
Yes, you are correct. When serializing the transaction for signing, the input you are targeting is set to the ScriptPubKey of the UTXO it is trying to spend, while the other inputs are left empty, Thi …