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How to get Z Value from Bitcoin Transaction when there are multiple inputs.

(Program on github find R S Z sigs for only first input from transaction, Other Sites which used to perform these are all removed )

Can someone get Z value for this address, 17s2b9ksz5y7abUm92cHwG8jEPCzK3dLnT
in this transaction https://www.blockchain.com/btc/tx/17e4e323cfbc68d7f0071cad09364e8193eedf8fefbcbd8a21b4b65717a4b3d3

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  • Every signature has its own sighash (z value). There will generally be one per transaction input, but there may be multiple in case of multisig too. Nov 20 at 17:28
  • No, he is talking about his own unsigned transaction z value, I want to find Z value for specific input in the transaction i listed above Nov 21 at 5:10
  • The algorithm is the same. Nov 21 at 13:50
  • I edited the post, see if you can help Nov 21 at 14:52
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    Then why do you care about a value that only appears as in internal value inside the signing algorithm? What would you do with it if you had it? This value matters perhaps if you're designing your own signing algorithm, but that case you'll need to be able to compute it yourself anyway. Nov 21 at 15:18
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From this only for example, only for outgoing transaction

https://blockchain.info/rawtx/3090cb29cf6c4ad0572f1fc7050ee0e796c2b30a226926aff3685875acc422ef?format=hex

With this: https://cryptoxploit.com/rsz-key/

https://github.com/CryptoXploit/bitcoin-key-compression/blob/main/RawTX_RSZ.py

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  • none of these can find Z value for specific publickey when there are multiple input in transaction, This automatically finds for first input only Nov 21 at 5:06

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