Go to top

@atomic-port/evm

This package is for HTLC transactions between the any blockchains. HTLC allows direct transactions between different chains. Usage and examples are shown below.

Test is now open to the public.

Transactions on each chain in this library are currently available only on the testnet. If you wish to use it in a production environment, please change the network and other parameters.

Deployed Contracts

Sepolia （TestNet）

native

• Endpoint: https://sepolia.infura.io/v3/85eb73cb20fc46058b5044657ed33efd
• Contract address: 0x549DEC2d00C3db272F337Ac4874503Ecf5205955

ERC20

• Endpoint: https://sepolia.infura.io/v3/85eb73cb20fc46058b5044657ed33efd
• Contract address: 0xbD674927a77f4Ca6f01Ac470A33747E060C3Ccd0

ERC721

• Endpoint: https://sepolia.infura.io/v3/85eb73cb20fc46058b5044657ed33efd
• Contract address: 0x4Bf07078493464447732B2a23126697b1C85DF9F

Rinkeby （TestNet）

native

• Endpoint: https://rpc.ankr.com/eth_rinkeby
• Contract address: 0x97ED40C207bf3B6dE4DB27E37E1989f3756E71f4

ERC20

• Endpoint: https://rpc.ankr.com/eth_rinkeby
• Contract address: 0x5F30A927063AA056Ee8BA93Be1175f7485c89Cac

ERC721

• Endpoint: https://rpc.ankr.com/eth_rinkeby
• Contract address: 0x3b1B7AB12c115148B4bbe14E8327Da6c1DfD70cd

Matic （TestNet）

native

• Endpoint: https://rpc-mumbai.maticvigil.com
• Contract address: 0x6003028E5C3FB11c5F002902dDa1E18cF6a5D34B

ERC20

• Endpoint: https://rpc-mumbai.maticvigil.com
• Contract address: 0xa66ffa7b45d9138e6A93bBa1f29a580bd559E5cC

ERC721

• Endpoint: https://rpc-mumbai.maticvigil.com
• Contract address: 0x6003028E5C3FB11c5F002902dDa1E18cF6a5D34B

Introduction

Install the necessary libraries

npm

npm install --save web3 @atomic-port/evm

yarn

yarn add web3 @atomic-port/evm

HTLC issues a secret and key in advance and uses this to issue a secret lock. When both parties agree to the transaction, the secret and key are exchanged separately, and the key is used to receive a token. This is how the cross-chain swap is performed.

Issue a secret lock

You can publish using this package with the following operations. The output hashPair contains a secret and a proof. The secret is shared in advance, and the proof is issued at a mutually agreed timing.

native/lock.ts erc20/lock.ts erc721/lock.ts erc20JPYC/lock.ts erc20Polygon/lock.ts

Unlocking by Proof

With a secret lock, locked assets are withdrawn through a secret proof transaction.

native/withDraw.ts erc20/withDraw.ts erc721/withDraw.ts erc20JPYC/withDraw.ts erc20Polygon/lock.ts

For more detailed examples, please check the sample collection below examples

More Documents

• about ethereum