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Bitcoin Script

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Total Economy: 0.12 USD
The Tx preimage is the data we used in signing a bitcoin transaction. Since the BIP143 has been adapted for the replay-protected sighash format in Bitcoin SV, The current composition structure of Tx preimage is as described above. When designing a complex smart contract, we will need to extract data from it. Challenge: Extract the nLocktime number from a Tx preimage by bitcoin opcodes.
joe tipped:
0.02 USD
1 year ago
musiq tipped:
0.01 USD
1 year ago
Is it correct that because not everything is on this list you can change some data of the transaction without invalidating the signature, and therefore comes transaction malleability ?
joe tipped:
0.01 USD
1 year ago
joe replied:
That is correct :) specifically, the transaction ScriptSig is not in the sighash pre-image.
covid tipped:
0.01 USD
1 year ago
covid replied:
Thanks !
venezia tipped:
0.09 USD
1 year ago
venezia replied:
Wow, this Util module is very useful.
adonsats replied:
jesus! xhliu got the correction ? 🙌
adonsats replied:
wooow! miniforth need those useful tools !
This question is not as complicated as it seems. : ) First correct answer will get 0.1 USD bonus.
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