BCH-XMR-SWAP PoC

45f62476-ad9c-4393-ba10-c9aae6ca90ca.mp4

• SwapLock Contract on video: bchtest:prf659upqyz96d7l4auuxt567fdrnrr4dyt6ddc8s5
• SwapLock Tx claim by "Alice": 5d9c13db8c40b2ab29b58a1f480bc90ba0746a7512ed78ceb2467f5084c7193a

Story

I interested in the bounty thats why i take a look. After some research i found that the contract v3 has some error on the signature part, thats why i contacted @bitcoincashautist. After exchanging idea, he come up with the contract v4. After that i started creating this repo. I was afraid to show it because i dont really know if i can finish it on time. I don't want to give "false hope" or make anyone waits on me (sorry @bitcoincashautist).

I almost finish it but i get very busy on school stuff. Then i came back again, and thats the time @bitcoincashautist informed me that we are racing for this bounty. So finish some missing part and do the testing.

• Why @mainnet_pat doing the flipstarter?
  • idk if i am able to make it on time, I still need to go in school😅.
  • They have much more experience than me
  • They are well-known in bch community and built many project.

I could help if needed. But i can't commit.

Development

Run client and server with auto-reload on save

cargo watch -c -q -w web-server -w protocol  -x "run --bin web-server"
cargo watch -c -q -w client -w protocol  -x "run --bin client"

Monero cli/rpc version used

monero-linux-x64-v0.18.3.1.tar.bz2

Example regtest for monero development

monerod --regtest --offline --fixed-difficulty=1 --rpc-bind-ip=0.0.0.0 --confirm-external-bind 

monero-wallet-rpc --disable-rpc-login --log-level=3 --daemon-address=http://localhost:18081 --untrusted-daemon --confirm-external-bind --rpc-bind-ip=0.0.0.0 --rpc-bind-port=8081 --wallet-dir=wallet_dir --allow-mismatched-daemon-version

monero-wallet-cli --log-level=3 --daemon-address=http://localhost:18081 --untrusted-daemon --allow-mismatched-daemon-version

Mainnet Transactions

Video are provided at the root of this repository ending it .mp4 File is >10mb so i cant embed it. You can just download it.

Happy Path

• SwapLock -> Alice: 91b9ab4ec54d22b46330c6ba9e5bb07a104513d7d132c2b6b7c48c76c921f40b
• Sweep Alice private key: 76d98630bc1ddd68d42905de1eaa41ae2e024dc75aa0622e1423de130caf0e71
• XMR Shared Address: 43unSddtX9iREffuDzs8gHPvVsu56Bfb4D4RaHjqFyQYd1PPwyJUWKX2ZmX9dxM3kiDq3Ct6mzeYDH6zsJJWjz6vFamaatk
• Alice Keys .trades/ongoing/eXQBT0jL3e-client.json TradeId: eXQBT0jL3e
• Bob Keys .trades/ongoing/eXQBT0jL3e-server.json TradeId: eXQBT0jL3e

Alice Failed to lock XMR

• SwapLock Contract: bitcoincash:pzavf0mxs2kfec8xsj7u8s6pquussw9dgs7mnmknl4
• SwapLock -> Refund: 1604dc533f241c643ad66aa8e64910298c39367dbf8bce1159bdbc5f5bb25e58
• Refund -> Bob Output: 2746ec141696a5b4dafc13eb8ce98ab3d4c4451967480d6d5af4996515241eeb
• Bob Spend: 8482981fd76ce8e8d82c2d299828941070fedebfdc1193edf70c704af5b01922
• Alice Keys .trades/ongoing/vlKFnqips8-client.json TradeId: eXQBT0jL3e
• Bob Keys .trades/ongoing/vlKFnqips8-server.json TradeId: eXQBT0jL3e

Credits

• The adaptor signature are base in https://github.com/comit-network/xmr-btc-swap
• The contract use are created by @bitcoincashautist https://gitlab.com/0353F40E/cross-chain-swap-ves/-/tree/master
• Discussions:
  • https://bitcoincashresearch.org/t/monero-bch-atomic-swaps/545
  • https://bounties.monero.social/posts/37/18-421m-bch-xmr-atomic-swaps

Bounty Address

https://bounties.monero.social/posts/37/18-921m-bch-xmr-atomic-swaps

monero address: 41pehjm4dYjeHNFKBfu3KJVE7zg5B6G3Cim54SbbMruyAo5M1yF84TVAAerVUVUbfN7qTFqhQioGMHJsextkVao36eyae4Z

bch address: bitcoincash:qph2r7qg026pqtpgz8lp4t8nwhw3wlnxcch2apefdc