deadmanoz on Nostr: I mean, this is obvious in hindsight, but I only learnt about the following today.. ...
I mean, this is obvious in hindsight, but I only learnt about the following today..
Since SegWit, any block with witness-bearing transactions has required the coinbase to have an OP_RETURN carrying the witness commitment.
This is what extends PoW to cover witness data (the spending authority), which SegWit moved out of the txid computation!!
Published at
2026-05-08 09:05:08 UTCEvent JSON
{
"id": "9bdfc024d353671c6862516f0f033721bf1202107e0c28ad3c5a80daf10e87d2",
"pubkey": "56e1c434b0518540e93f9eca4440ca1611398d455b9f9102911442fd1ba8f3d8",
"created_at": 1778231108,
"kind": 1,
"tags": [],
"content": "I mean, this is obvious in hindsight, but I only learnt about the following today..\n\nSince SegWit, any block with witness-bearing transactions has required the coinbase to have an OP_RETURN carrying the witness commitment. \n\nThis is what extends PoW to cover witness data (the spending authority), which SegWit moved out of the txid computation!!",
"sig": "59ec99c4ffd77ea62d53a1d33e7e29ec2fcb95bf1ab23be45fd9e4b5b22315e1d9220ed1c877b9b9b51799a9779148d173df406cce8bb1f818d829ca30371c5e"
}
