Thanks for the reply.
The way we would do it is:
Let's say we have 3 cold keys for multisig: A B and C
Whose xpubs are: xA xB and xC
We all sign each other's xpubs, whose signatures are:
sAxB
sAxC
sBxA
sBxC
sCxA
sCxB
We can then create a wallet that says "when verifying change with 0x01
global
Hello all,
Just wanted to pick your brains about an idea for PSBT extension.
One problem we try to solve with cold -> warm and warm -> hot sends for our
exchange wallet is "How do I know that the address I am sending to is not a
hacker's address that was swapped in between unsigned tx creation an
I have a comment about the 'input_index' of the transaction digest for
taproot signatures. It is currently listed as 2 bytes. I think it would
be better to expand that to 4 bytes.
The two byte limit is derived from the block size / weight limit, which
limits the maximum size of a transaction, whi
