Bisq2: Liquid Wallet Integration (Elements)

[alvasw]

_This is a Bisq Network project. Please familiarize yourself with the project management process._

Description

We want to implement atomic swaps between Bitcoin and L-BTC/Liquid Assets in Bisq 2. To do that, we need to implement a Liquid Wallet backend first. In this project, I'll implement the backend for the Elements Wallet (https://blockstream.com/elements/).

Rationale

This is needed to implement atomic swaps between Bitcoin and L-BTC/Liquid Assets.

Criteria for delivery

This project is complete when the needed RPC calls to Elements are implemented and merged into Bisq 2 (including integration tests).

Measures of success

We have a liquid wallet in Bisq 2.

Risks

None.

Tasks

• [x] Setup Elements Wallet with Bitcoin Core Regtest Instance
  • [x] Create Elements Process Manager (startup & shutdown)
• [x] Bitcoin RPC calls:
  • [x] getrawtransaction
  • [x] gettxoutproof
• [x] Elements RPC calls:
  • [x] claimpegin
  • [x] createwallet
  • [x] finalizepsbt
  • [x] generatetoaddress
  • [x] getbalance
  • [x] L-BTC
  • [x] Liquid Assets
  • [x] getnewaddress
  • [x] getpeginaddress
  • [x] getrawtransaction
  • [x] gettxoutproof
  • [x] issueasset
  • [x] listtransactions
  • [x] listunspent
  • [x] listwallets
  • [x] loadwallet
  • [x] sendrawtransaction
  • [x] sendtoaddress
  • [x] L-BTC
  • [x] Liquid Assets
  • [x] signmessage
  • [x] stop
  • [x] unloadwallet
  • [x] verifymessage
  • [x] walletpassphrase
• [x] Integration test for all RPC calls

[alvasw]

Delivered in https://github.com/bisq-network/bisq2/pull/111.