<ul><li>When verifying a two-input transaction in Bitcoin, the process for building the hash-preimage involves including information from both inputs.</li><li>To verify each input in a two-input transaction, the hash-preimage includes the scriptSig and sigHash placement for each input.</li><li>The result of these steps is double hashed.</li><li>An example and further explanation can be found in the provided code for verifying one-input and one-output transactions.</li></ul>

Which is the hash-preimage of a 2-input transaction?

Discover more