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Fix typo

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Cesar Alvarez Vallero 2021-08-16 12:31:01 -03:00
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13_2_Writing_Complex_Multisig_Scripts.md
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@ -78,7 +78,7 @@ Script:
Running: 0 <sigVPA> <sigVPB> 2 <pubKeyVPA> <pubKeyVPB> <pubKeyVPC> 3 OP_CHECKMULTISIG
Stack: [ ]
```
You might notice that the President's signature just uses a simple `OP_CHECKSIGNATURE` rather than the more complex code ususally required for a P2PKH. We can get away with including the public key in the locking script, obviating the usual rigamarole, because it's hashed and won't be revealed (through the `redeemScript`) until the transaction is unlocked. This also allows for all of the possible signers to sign using the same methodology.
You might notice that the President's signature just uses a simple `OP_CHECKSIGNATURE` rather than the more complex code usually required for a P2PKH. We can get away with including the public key in the locking script, obviating the usual rigamarole, because it's hashed and won't be revealed (through the `redeemScript`) until the transaction is unlocked. This also allows for all of the possible signers to sign using the same methodology.
The only possible problem is if the President is absent-minded and accidentally signs a transaction with one of his VPs, because he remembers this being a 2-of-3 multisig. One option is to decide that's an acceptable failure condition, because the President is using the multsig incorrectly. Another option is to turn the 2-of-3 multisig into a 2-of-4 multisig, just in case the President doesn't tolerate failure: `OP_DEPTH 1 OP_EQUAL IF <pubKeyPres> OP_CHECKSIGNATURE ELSE 2 <pubKeyVPA> <pubKeyVPB> <pubKeyVPC> <pubKeyPres> 4 OP_CHECKMULTISIG ENDIF`. This would allow the President to mistakenly sign with any Vice President, but wouldn't impact things if two Vice Presidents wanted to (correctly) sign.