Bitcoin–Monero Cross-chain Atomic Swap
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Daniel Karzel 62079fc342 Punish scenario falls back to refund or fails
If we enter a punish scenario we can be sure the punish timelock is expired.
Thus, we must be able to punish unless Bob published the refund transaction.
There is no benefit in racing punish against refund here, because we cannot recover from a punish tx failure anyway.

The logic was changed to:
Try to broadcast punish tx and await finality.
  If either punish broadcasting of finality fails, try to fetch the refund transaction.
    If it is available extract Bob's Monero key part and transition to refund.
    If refund tx is not available fail without a status update.

Note that we do not distinguish different errors upon failure of punish, because
we cannot recover anyway. If we fail to retrieve Bob's refund tx, we just exit without
a status update so punish can be retried by resuming the swap.
2021-03-22 16:10:01 +11:00
.cargo .cargo/config.toml for specifying linker 2021-03-15 14:36:05 +11:00
.github Bump actions/setup-python from v1 to v2.2.1 2021-03-17 07:52:29 +00:00
monero-harness Bump tokio from 1.0.2 to 1.3.0 2021-03-17 10:53:55 +00:00
monero-rpc Remove unused field 2021-03-11 15:34:27 +11:00
swap Punish scenario falls back to refund or fails 2021-03-22 16:10:01 +11:00
tokio-tar Download and run monero wallet rpc on swap cli startup 2021-02-25 11:21:41 +11:00
.gitignore Push cargo lock to git as we are building a binary 2020-12-01 09:31:41 +11:00
bors.toml Re-introduce punish test 2021-03-16 18:34:00 +11:00
Cargo.lock prepare 0.3 release 2021-03-18 11:11:20 +11:00
Cargo.toml Split monero-harness into harness and rpc 2021-02-23 14:30:20 +11:00
LICENSE Change license to GPLv3 2020-10-12 17:13:25 +11:00
README.md Minor fixes in README.md 2021-03-16 13:05:43 +11:00
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XMR to BTC Atomic Swap

This repository hosts an MVP for atomically swapping BTC to XMR. It implements the protocol described in section 3 of this paper.

Quick start

  1. Download the latest release for your operating system
  2. Run the binary: ./swap buy-xmr --receive-address <YOUR MONERO ADDRESS>
  3. Follow the instructions printed to the terminal

Limitations

For now, the MVP is limited to testnet3 on Bitcoin and stagenet on Monero.

How it works

This repository primarily hosts two components:

  • the swap CLI
  • the asb service

swap CLI

The swap CLI acts in the role of Bob and swaps BTC for XMR. See ./swap --help for a description of all commands. The main command is buy-xmr which automatically connects to an instance of asb.

asb service

asb is short for automated swap backend (we are open to suggestions for better names!). The service acts as the counter-party for the swap CLI in the role of Alice. It provides the CLI with a quote and the liquidity necessary for swapping BTC into XMR.

Contact

Feel free to reach out to us in the COMIT-Monero Matrix channel.