Hi, the proposal seems to be quite confused about how it's going to do that. It mentions upgrading existing opcodes, which is a hardfork, not soft fork, at least without using a different leaf version. But it also mentions OP_SUCCESSX which are different opcodes. I think it needs some analysis. (leaf version seems better intuitively)
I'd also love to see analysis why stop at 64 bits and not go all the way to 256 which could be useful for cryptography. Anyway, pushing amounts on the stack would be great. Though I'm surprised you're only proposing the sum, not individual outputs. Why? Good luck! Martin Dňa po 12. 5. 2025, 14:21 Chris Stewart <[email protected]> napísal(a): > This soft fork proposal extends the range of numeric operands in Script > from -2^31+1 to 2^31-1, to -2^63+1 to 2^63-1. It further expands the > result range for arithmetic operations from -2^63 to 2^63-1, to -2^127 to > 2^127- 1. > > All existing opcodes[1 > <https://github.com/Christewart/bips/blob/2025-03-17-64bit-pt2/bip-XXXX.mediawiki#cite_note-1> > ] that interpret stack elements as numbers are upgraded to support 64-bit > parameters. > > The existing number encoding format[2 > <https://github.com/Christewart/bips/blob/2025-03-17-64bit-pt2/bip-XXXX.mediawiki#cite_note-2> > ] and arithmetic semantics[3 > <https://github.com/Christewart/bips/blob/2025-03-17-64bit-pt2/bip-XXXX.mediawiki#cite_note-3> > ] from the original Bitcoin implementation are preserved, while enhancing > the supported precision. > > > https://github.com/Christewart/bips/blob/2025-03-17-64bit-pt2/bip-XXXX.mediawiki > > The purpose for this BIP is to lay the groundwork for introducing amounts > into Script. This document takes no opinion on how this is done. > > I've prototyped a few different proposals now introducing amount locks > into Script[0][1] and feel like this proposal is stable enough for serious > review. > > -Chris > > [0] - https://delvingbitcoin.org/t/op-inout-amount/549/4?u=chris_stewart_5 > > [1] - https://delvingbitcoin.org/t/op-inout-amount/549/5?u=chris_stewart_5 > > > > -- > You received this message because you are subscribed to the Google Groups > "Bitcoin Development Mailing List" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > To view this discussion visit > https://groups.google.com/d/msgid/bitcoindev/CAGL6%2BmH%2B9iq5_SR-Fa5zVZRoTpHasX7xoprYeJZRd5D80J1GqA%40mail.gmail.com > <https://groups.google.com/d/msgid/bitcoindev/CAGL6%2BmH%2B9iq5_SR-Fa5zVZRoTpHasX7xoprYeJZRd5D80J1GqA%40mail.gmail.com?utm_medium=email&utm_source=footer> > . > -- You received this message because you are subscribed to the Google Groups "Bitcoin Development Mailing List" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion visit https://groups.google.com/d/msgid/bitcoindev/CALkkCJbeAYA2X8jv8iWthKBB8GqxA49DCFm%2BUMnhmXYpexTNtw%40mail.gmail.com.
