Feature : support for BIP174

[rllola]

Bip 174 describe a standard to easily exchange data for multi-party signing. It is called Partially Signed Bitcoin Transaction. I propose to call it Partially Signed Dogecoin Transaction (psdt for short).

PSBT is already supported accross hardwares wallets (like ledger) so the industry is already familiar with the standard. It will also set a standard Dogecoin multsig protocols that we can start from.

ref:

• BIP 174 : https://github.com/bitcoin/bips/blob/master/bip-0174.mediawiki
• PSBT implementation in javascript : https://github.com/alexbosworth/psbt

[rllola]

Something to consider if we choose to change the to psdt. In the standard there is something called <magic>

Magic bytes which are ASCII for psbt followed by a separator of 0xFF. This integer must be serialized in most significant byte order.

Changing to psdt would clearly identify Dogecoin transaction but it also means that it won't be recognized by current lib.

[xanimo]

have plans to integrate this. thank you for making an issue :3