https://github.com/jl2012/bips/blob/mastopcodes/bip-mastopcodes.mediawiki
This BIP defines the scripting system in Merkelized Abstract Syntax Tree
(BIP114). It re-enables some of the previously disabled opcodes, introduces new
opcodes, and defines expandable opcodes for future extension.
It will:
• re-enable CAT, SUBSTR, LEFT, RIGHT, INVERT, AND, OR, XOR, LSHIFT, and
RSHIFT;
• introduce new opcodes: DUPTOALTSTACK, DUPFROMALTSTACK, SWAPSTACK,
SWAPCAT, and RESIZE;
• define expandable opcodes for future softforks of stack manipulating
opcodes: EXPAND1 to EXPAND32.
This BIP is based on the BIP114 MAST:
https://github.com/bitcoin/bips/blob/master/bip-0114.mediawiki
Reference implementation, including the BIP9 logic and script tests, could be
found at https://github.com/jl2012/bitcoin/tree/segwit_mast . This branch is
rebased on top of the #7910 segwit PR. However, I have not tested the BIP9
activation.
The implementation of the re-enabled opcode are mostly taken from the Elements
Project.
-------------
This BIP does not describe changes in CHECKSIG (e.g. new hash type, Schnorr
sig), which I think should be another BIP.
I have also considered more radical changes. For example, make all comparison
opcode to be “VERIFY” type, and a script passes if and only if the stack is
exactly empty after evaluation.
signature.asc
Description: Message signed with OpenPGP using GPGMail
_______________________________________________ bitcoin-dev mailing list [email protected] https://lists.linuxfoundation.org/mailman/listinfo/bitcoin-dev
