hashed-timelock-contract-ethereum

Hashed Timelock Contracts (HTLCs) for Ethereum:

HashedTimelock.sol - HTLC for native ETH token
HashedTimelockERC20.sol - HTLC for ERC20 tokens

Use these contracts for creating HTLCs on the Ethereum side of a cross chain atomic swap (for example the xcat project).

Deployment

HashedTimelock:

Ropsten: 0x0c0c3ec813a311acc37c8fc77d3cda0f32bcdd4b
Mainnet: <not deployed yet ...>

HashedTimelockERC20:

Ropsten: 0x42902c91ed93ac58f1c958806c8d22e7ea1835f8
Mainnet: <not deployed yet ...>

Protocol - Native ETH

Main flow

Timelock expires

Protocol - ERC20

Main flow

Timelock expires

Interface

HashedTimelock

newContract(receiverAddress, hashlock, timelock) create new HTLC with given receiver, hashlock and expiry; returns contractId bytes32
withdraw(contractId, preimage) claim funds revealing the preimage
refund(contractId) if withdraw was not called the contract creator can get a refund by calling this some time after the time lock has expired.

See test/htlc.js for examples of interacting with the contract from javascript.

HashedTimelockERC20

newContract(receiverAddress, hashlock, timelock, tokenContract, amount) create new HTLC with given receiver, hashlock, expiry, ERC20 token contract address and amount of tokens
withdraw(contractId, preimage) claim funds revealing the preimage
refund(contractId) if withdraw was not called the contract creator can get a refund by calling this some time after the time lock has expired.

See test/htlcERC20.js for examples of interacting with the contract from javascript.

ABI and Bytecode