Item Bridge

The Item Bridge is built in partnership with Layer Zero. For more information, visit their documentation at: https://layerzero.gitbook.io/docs/.

Layer Zero has released Layer Zero Scan (https://layerzeroscan.com/), a message explorer that can be used to track the progress of bridged items.

The Item Bridge from Harmony only allows bridging to DFK Chain, but not in the other direction.

Chain ID

Use the following destination Chain IDs for the Item Bridge:

• DFK Chain Mainnet: 115 / Testnet: 10015

• Klaytn Mainnet: 150 / Testnet: 10050

Fees

Bridging has a fee associated with each transaction. This fee must be included in the value field of the transaction. The fees for bridging Items are as follows:

• ERC-20: Use estimateFeeSendERC20

• ERC-1155: Use estimateFeeSendERC1155

Contract Addresses

Name	Mainnet	Testnet
Harmony	0x091cfc85d2e20b110Cd754c6c410A67c925C55ED	N/A
DFK Chain	0x501CdC4ef10b63219704Bf6aDb785dfccb06deE2	0xDA02dC6419A1CcEF04C041Cd792A6fe5AF327a44
Klaytn	0x6d5B86EaC9097EA4a94B2b69Cd4854678B89f839	0x3D9d84801A0580a9C17B5FfAE0D7AcD73C8a3Ff7

Interfaces

interface IItemBridge {

    event ERC1155Received(uint16 _srcChainId, bytes _srcAddress, address receiver, address item, uint256 amount, uint256 id);
    event ItemReceived(uint16 _srcChainId, bytes _srcAddress, address receiver, address item, uint256 amount);
    event MessageFailed(uint16 _srcChainId, bytes _srcAddress, uint64 _nonce, bytes _payload);
    event SetTrustedRemote(uint16 _srcChainId, bytes _srcAddress);

    function estimateFeeSendERC1155(uint16 _dstChainId, address _receiver, address _item, uint256 _amount, uint256 _id, bool _useZro, bytes _adapterParams) view returns (uint256);
    function estimateFeeSendERC1155(uint16 _dstChainId, address _receiver, address _item, uint256 _amount, uint256 _id) view returns (uint256);
    function estimateFeeSendERC20(uint16 _dstChainId, address _receiver, address _item, uint256 _amount) view returns (uint256);
    function estimateFeeSendERC20(uint16 _dstChainId, address _receiver, address _item, uint256 _amount, bool _useZro, bytes _adapterParams) view returns (uint256);
    function lzEndpoint() view returns (address);
    function owner() view returns (address);
    function paused() view returns (bool);
    function sendERC1155(uint16 _dstChainId, address _receiver, address _item, uint256 _amount, uint256 _id, address _zroPaymentAddress, bytes _adapterParams) payable;
    function sendERC1155(uint16 _dstChainId, address _receiver, address _item, uint256 _amount, uint256 _id) payable;
    function sendERC20(uint16 _dstChainId, address _receiver, address _item, uint256 _amount, address _zroPaymentAddress, bytes _adapterParams) payable;
    function sendERC20(uint16 _dstChainId, address _receiver, address _item, uint256 _amount) payable;

}

ABIs

20KB

ItemBridge.json