Market Maker Bot

Atomic Swap market maker bot written in Golang.

Prepare

git clone https://github.com/smartbch/atomic-swap-bot.git
cd atomic-swap-bot
go test ./...

Start bot on BCH/SBCH testnets

Step1, start your own BCHN testnet node.

Step2, generate a new BCH private key:

git clone https://github.com/smartbch/atomic-swap-covenants.git
cd atomic-swap-covenant
npm i

ts-node scripts/htlc.ts gen-user
# the output looks like this:
wif : cVPTD8swmUJrYNDkTm1EwhcZ5V5UdsmrTBmYdb9bH6NMxn47H5Yz
addr: bchtest:qqgy70efq403k2mda04ku6dx7r2nfuq4s5u6xh83hw

ts-node scripts/htlc.ts user-info \
  --wif=cVPTD8swmUJrYNDkTm1EwhcZ5V5UdsmrTBmYdb9bH6NMxn47H5Yz
# the output looks like this:
addr : bchtest:qqgy70efq403k2mda04ku6dx7r2nfuq4s5u6xh83hw
pbk  : 020661e43f6a0be81057f6e77157aec13782894dd6faf6fc217bfd9d89cc03e5a7
pkh  : 104f3f29055f1b2b6debeb6e69a6f0d534f01585

Send this new address some test tBCH through faucet. And import it to you BCHN testnet node:

curl --user user:pass --data-binary '{"jsonrpc": "1.0", "id":"curltest", "method": "importaddress", "params": ["bchtest:qqgy70efq403k2mda04ku6dx7r2nfuq4s5u6xh83hw", "testbot", true] }' -H 'content-type: text/plain;' http://127.0.0.1:48334/

Step3, generate a new SmartBCH private key:

git clone https://github.com/smartbch/smartbch.git
cd smartbch
go run github.com/smartbch/smartbch/cmd/smartbchd gen-test-keys -n 1 --show-address
# the output looks like this:
3f122c95922493442b9a358d851ab42771efdc73f6e7fd2f6af8091f2cfca491 0x3Aad4164ee396E8d4dAa36b97c60A734D49CC946

Send this new address some test sBCH through faucet.

Step4, register the bot:

git clone https://github.com/smartbch/atomic-swap-contracts.git
cd atomic-swap-contracts
npm i

KEY1=3f122c95922493442b9a358d851ab42771efdc73f6e7fd2f6af8091f2cfca491 \
HARDHAT_NETWORK=sbch_testnet node ./scripts/htlc.js register-bot \
	--htlc-addr=0x3246D84c930794cDFAABBab954BAc58A7c08b4cd \
	--intro=TestBot \
	--pkh=0x104f3f29055f1b2b6debeb6e69a6f0d534f01585 \
	--bch-lock-time=6 \
	--penalty-bps=500 \
	--fee-bps=100 \
	--min-swap-amt=0.01 \
	--max-swap-amt=10.0 \
	--status-checker=0x3Aad4164ee396E8d4dAa36b97c60A734D49CC946

Note the --htlc-addr option. Follow this doc to deploy you own HTLC smart contract on SmartBCH testnet.

Step5, start the bot:

cd atomic-swap-bot

go run github.com/smartbch/atomic-swap-bot/cmd/asbot \
	--db-file=bot.db \
	--bch-key=cVPTD8swmUJrYNDkTm1EwhcZ5V5UdsmrTBmYdb9bH6NMxn47H5Yz \
	--bch-rpc-url=http://user:[email protected]:48334 \
	--sbch-rpc-url=http://127.0.0.1:8545 \
	--sbch-key=3f122c95922493442b9a358d851ab42771efdc73f6e7fd2f6af8091f2cfca491 \
	--sbch-htlc-addr=0x3246D84c930794cDFAABBab954BAc58A7c08b4cd \
	--sbch-gas-price=1.05 \
	--bch-confirmations=0 \
	--bch-lock-fee-rate=2 \
	--bch-unlock-fee-rate=2 \
	--bch-refund-fee-rate=2

Or start bot in enclave using EGo:

git clone https://github.com/smartbch/atomic-swap-bot.git
cd atomic-swap-bot

ego-go build github.com/smartbch/atomic-swap-bot/cmd/asbot
ego sign asbot
mkdir data
ego run asbot \
	--db-file=bot.db \
	--bch-rpc-url=http://user:[email protected]:48334 \
	--sbch-rpc-url=http://127.0.0.1:8545 \
	--sbch-htlc-addr=0x3246D84c930794cDFAABBab954BAc58A7c08b4cd \
	--bch-confirmations=0 \
	--bch-lock-fee-rate=2 \
	--bch-unlock-fee-rate=2 \
	--bch-refund-fee-rate=2 \
	--sbch-gas-price=1.05

The above cmd prints something like this and wait inputs:

EGo v1.3.0 (360a6a40836461465fdbd0742dfb0f980b68c638)
[erthost] loading enclave ...
[erthost] entering enclave ...
[ego] starting application ...
The ecies pubkey: 03052743d278846f90cedb64282a3ea3db20a8414b627e4aff3dc5408110073eed
Enter the encrypted BCH WIF (ASIC): 

You can encrypt your BCH/sBCH keys using this cmd (in another shell window):

go run github.com/smartbch/atomic-swap-bot/cmd/encrypt

Then feed the encrypted keys into ego run cmd and the bot will be started.

htlc cmd

You can use htlc cmd to test BCH HTLC covenant using Golang on BCH testnets.

Locking example:

go run github.com/smartbch/atomic-swap-bot/cmd/htlc lock \
    --rpc-url=http://user:[email protected]:48334 \
	--wif=cPoiXWwPS9Xtvoe6DJ2CMmCiaJqUDPKX1vBRsaQNA6C9HKwBTxte \
	--to-addr=bchtest:qzf2nglh7zaatd4xdw2ahp540hnzw77yjymjgxkj0w \
	--secret=123 \
	--expiration=2 \
	--penalty-bps=500 \
	--utxo=44ce4fce907ecbc8d5070ac38aeb32df85c8cdb0aea07f592cae4c4553f828bc:2:9904419 \
	--amt=5000 \
	--miner-fee-rate=2 \
	--dry-run=true

Unlocking example:

go run github.com/smartbch/atomic-swap-bot/cmd/htlc unlock \
    --rpc-url=http://user:[email protected]:48334 \
	--wif=cUw45Hq2UkDYqYWz9JwMJGJuhETFWFN4AAY87WffFRSD8aAV9dZy \
	--from-addr=bchtest:qz9hn65eumzpsam2njwjchwqwj6yqny22uzluhy5d0 \
	--secret=123 \
	--expiration=2 \
	--penalty-bps=500 \
	--utxo=5d59029b596c45c39be73f49d4c9210f042813defa6f7d5ef575452064c017c2:0:5000 \
	--miner-fee-rate=2 \
	--dry-run=true

Refunding example:

go run github.com/smartbch/atomic-swap-bot/cmd/htlc refund \
    --rpc-url=http://user:[email protected]:48334 \
	--wif=cPoiXWwPS9Xtvoe6DJ2CMmCiaJqUDPKX1vBRsaQNA6C9HKwBTxte \
	--to-addr=bchtest:qzf2nglh7zaatd4xdw2ahp540hnzw77yjymjgxkj0w \
	--secret=123 \
	--expiration=2 \
	--penalty-bps=500 \
	--utxo=a55bdc2751dc4f3c347a52cc45f063e8c0c3781e5f3fc2c7dea49bc10098d694:0:5000 \
	--miner-fee-rate=2 \
	--dry-run=true