in bip143 thet define a witness signature. In the first example there is a witness broken down
witness 00 02 47304402203609e17b84f6a7d30c80bfa610b5b4542f32a8a0d5447a12fb1366d7f01cc44a0220573a954c4518331561406f90300e8f3358f51928d43c212a8caed02de67eebee01 21025476c2e83188368da1ff3e292e7acafcdb3566bb0ad253f62fc70f07aeee6357
this formatting doesn’t appear to be defined anywhere in this document? my question is specifically
- what is the entire second piece "21025476c2e83188368da1ff3e292e7acafcdb3566bb0ad253f62fc70f07aeee6357"
- the first part is the signature but what are the extra bytes on the front and end specifically 0x47 and 0x01
- Most importantly the signature is too long?! it is 70 bytes instead of 64. "304402203609e17b84f6a7d30c80bfa610b5b4542f32a8a0d5447a12fb1366d7f01cc44a0220573a954c4518331561406f90300e8f3358f51928d43c212a8caed02de67eebee" I was able to take the example private key, public key, and sighash and sign and verify so I know they are good, unless they aren’t using SECP256k1 but that doesn’t appear to be specified anywhere?
Thank you a lot in advance!!
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