TransactionHash Mistmatch

[solidsnakedev]

I'm not sure why CML produces a different tx hash compared to Lucid CML

CML example

const txhashCML = CML.hash_transaction(CML.TransactionBody.from_cbor_hex(("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")))
console.log("txhash CML", txhashCML.to_hex())

the output is the following
txhash CML 3ea6919295e402b9cf13afdc0f45104f9a91d299b896812f363bb8cc0f80f0a3

Lucid example

const lucidTxHash = C.hash_transaction(C.TransactionBody.from_bytes(fromHex("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")))
console.log("lucidTxHash", lucidTxHash.to_hex())

the output is the following
lucidTxHash 2548148ad0fb809b5756c6f8b8e1d3e705f0c4cda44af6163d6b766786d061ec

The problem I have is when using CML, Blockfrost returns the following error

Error: "transaction submit error ShelleyTxValidationError ShelleyBasedEraBabbage (ApplyTxError [UtxowFailure (FromAlonzoUtxowFail (WrappedShelleyEraFailure (InvalidWitnessesUTXOW [VKey (VerKeyEd25519DSIGN \"4f26d9d8185481167e5647039d4f390c8c74a5fbca1f115709a2998e93180f39\")])))])"

[SebastienGllmt]

@rooooooooob is this the same as the other issue you've been investigating?

[rooooooooob]

@SebastienGllmt no it's not. Mine was I think a Plutus script hash mismatch or missing witness (due to script hash mismatch I think because it was there) or something to do with Plutus.

[solidsnakedev]

This issue happens when you make a time lock script (native minting policy) , and you add the minted asset to the Tx, when you remove the mint field the Tx hashes from lucid and CML match, but when you add the mint field they returned different hashes.

{
    0: [
        [
            h'0d31e3060edc0422bab792b414b6920534fb61f72a24cb76c911fea670601518',
            0,
        ],
        [
            h'5a4a961c2ff22b870f06f5303dcfffaaf3afdb819b12f5f0e60f0540e0e74907',
            0,
        ],
        [
            h'f9178e7551be72eb512f8b1b739346c84e9cda4ef8be4feada9bfff6fe47e800',
            0,
        ],
    ],
    1: [
        [
            h'00bc83d1474fafc0669e360c6ef389d3874f5eff99c31f343ff2cdab0bcb68eb5507f1a2a0cb4ddb095125f0f9878568cfe2466f2969db1ed3',
            [
                33885333_2,
                {
                    h'748a7026de606c27c06e4b90cb2e1844b566b89fba0d282debe4b40a': {h'4d794d696e746564546f6b656e': 1},
                    h'a11c0e63717ac9d8d7bd50c6b29111003e765d199915a02613069641': {h'4d794d696e746564546f6b656e': 30_0},
                    h'a49d85bfbd193446051e644e7ad448682a1bc1b02d5a15f78429a1f0': {h'4d794d696e746564546f6b656e': 10},
                    h'c7e5e285a6ca1fdd6b8b0293b4d825a9c92ae69f8fc35ae2252a697d': {h'4d794d696e746564546f6b656e': 10},
                    h'fed7a8ee8af612b08a05304ba434ef18f37be06f144fbc190d377942': {h'4d794d696e746564546f6b656e': 10},
                    h'92db8682a9e00473968130a7d3ee6d1bd331812543a8584ba739c74c': {h'4d794d696e746564546f6b656e': 1},
                    h'd3c9b677c3e599ac2eb0a455e4d5d027d5ef860caf72b5dc27ba0e16': {h'4d794d696e746564546f6b656e': 1},
                    h'e2085cebe2ce09d4ec0cbfe965f332941686c9288199440d45e95ff0': {h'4d794d696e746564546f6b656e': 1},
                    h'2fce0a65bac1267022f94296e3d55fb862979b13bed38521a31cd200': {h'4d794d696e746564546f6b656e': 1},
                },
            ],
        ],
    ],
    2: 195465_2,
    3: 53715189_2,
    9: {
        h'2fce0a65bac1267022f94296e3d55fb862979b13bed38521a31cd200': {h'4d794d696e746564546f6b656e': 1},
    },
}

so basically the time lock script needs requires these 2 fields, 3 -> ttl and 9 -> mint

3: 53715189_2,
9: {
        h'2fce0a65bac1267022f94296e3d55fb862979b13bed38521a31cd200': {h'4d794d696e746564546f6b656e': 1},
    },

. I can send you the Tx example, if needed

[rooooooooob]

@solidsnakedev immediate workaround: use tx_body.hash() instead of hash_transaction(tx_body) and you'll get the right one.

For some reason the free-floating one was hashing the canonical CBOR. You would want to have canonical CBOR for e.g. hardware wallets, but your entire TX should be canonical not just when you go to hash it or otherwise it won't match up with the CBOR.

Eventual fix: #321