Re: [bitcoin-dev] BIP174 / PSBT extensions

2019-03-07 Thread Gregory Maxwell via bitcoin-dev
On Thu, Mar 7, 2019 at 11:49 PM Andrew Chow via bitcoin-dev wrote: > I feel like this breaks the central idea of PSBT that a PSBT contains > everything you need to construct a transaction. > This would rely on parties in the transaction having state and remembering > things which I don't think i

Re: [bitcoin-dev] BIP174 / PSBT extensions

2019-03-07 Thread Andrew Chow via bitcoin-dev
Hi Andrew, I think having some of these extensions would be great. On 3/6/19 1:08 PM, Andrew Poelstra via bitcoin-dev wrote: > 1. Add an field to PSBT_GLOBAL_UNSIGNED_TX to the global table which contains >just a txid of the unsigned transaction, for bandwidth savings in case >signers ha

[bitcoin-dev] BIP174 / PSBT extensions

2019-03-07 Thread Andrew Poelstra via bitcoin-dev
Hi all, I'd like to start initial discussion about an extension to BIP174 [1] to add some fields that I've found myself wanting when using PSBT in practice. For now I'll just list the things that I'd like to see, and if we can come up with a stable list then I'll try to write up a more formal dra