implement simplicity sighash command#9
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apoelstra merged 7 commits intoBlockstreamResearch:masterfrom Oct 24, 2025
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Unsure if we should move this parsing logic upstream or what to do with it. Basically, when reading Simplicity code off of blockstream.info, it's pretty hard to decode because the code is hex-encoded and not labeled at all and just thrown in a big list of witness stack items. For example: https://blockstream.info/liquidtestnet/nojs/tx/e54d31ce544b65a3768d7dc44a9caf1142eb1ce9bb46707f5a83cb1ccf9b77f9?expand which was created using the web ide tutorial. The program is the element starting with e4fba05... and the witness is the element above it. The easiest way to figure this out, for now, is to just attempt to parse all the hex blobs as Simplicity. This commit makes that possible. (Then once you have the hex, you can run hal-simplicity simplicity simplicity info <hex> to get the base64, then re-run with other blobs hal-simplicity simplicity simplicity info <base64> <witness hex> to figure out that the witness is the hex blob starting with 9bef...).
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simplicity sighash commandsimplicity sighash command
This command takes a transaction environment (a raw transaction, input index, details about all its input UTXOs and information about the current input) and produces a sighash. It also optionally takes a secret key, with which it will produce a signature on the current sighash, and/or a public key and signature, with which it can validate a signature. If both a public and secret key are provided, they will be checked for consistency with each other.
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cc @canndrew |
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ACK e6ba5e3 |
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Adds the
simplictiy sighashcommand, which can: