[BIP Proposal] P2SH and Version 0 Segwit Script enforcement from genesis
(too old to reply)
Suhas Daftuar via bitcoin-dev
2018-01-19 20:38:34 UTC

I propose backdating the P2SH and Segwit version 0 script rules back to the
genesis block, as a way to simplify these consensus rules. Here's the
abstract from a draft BIP I wrote up to explain this change:

The Pay to Script Hash (P2SH, BIP 16) script rules and the Version 0
Witness Program script rules (BIP 143/141) can be enforced from the genesis
block with only one historical exception. Doing so simplifies consensus
rules and allows protocol implementers to avoid writing and testing code
paths that are no longer relevant.

The full BIP draft can be found here:

And the currently open pull request to Bitcoin Core which implements this
change can be found here: https://github.com/bitcoin/bitcoin/pull/11739