Note:
BIP-118 as-is enables something similar to OP_PUSH_KEY_INTERNAL_TAGGED via
the following script fragment:
witness:
program: DUP 0x01 CHECKSIG SWAP DUP TOALTSTACK CHECKSIG FROMALTSTACK
It's unclear how useful this might be, since the signature already covers
the transaction.
--
Hi Devs,
Two small transaction introspection opcodes that are worth considering are
OP_PUSH_KEY_INTERNAL or OP_PUSH_KEY_EXTERNAL which can return the taproot
key for the current input.
While the internal key could be included in the tree already, and this is
just a performance improvement, the
