Hero Bridge (LayerZero)

The LayerZero Hero Bridge processes the cross-chain bridging of Hero NFTs. It is available between DFK Chain and Metis, and between Kaia and Metis only. Bridging a Hero will also send any Pets or Equipment that are attached to the Hero.

The Hero Bridge is built in partnership with Layer Zero using their V2 Messaging protocol. For more information, visit their documentation at: https://layerzero.gitbook.io/docs/.

Use Layer Zero Scan (https://layerzeroscan.com/) to track the progress of bridged items.

Chain ID

Use the following mainnet destination Chain IDs for the Hero Bridge:

• DFK Chain: 53935

• Kaia: 8217

• Metis: 1088

Bridging Heroes from Metis requires that they are sent back to the same Chain ID that they first arrived from. This realm can be found in the realmId field on the HeroV4 contract, with the following mappings:

DFK Chain: 1 (Testnet: 20)

Kaia: 2 (Testnet: 21)

Fees

Bridging has a fee associated with each transaction. This fee must be included in the value field of the transaction. Fees can be estimated by calling estimateHero or estimateHeroes.

Contract Addresses

Name	Mainnet	Testnet
DFK Chain	0x49F7541b4308A2332afcA5dc5830a3a5f93F18bC	0xe2d5CD6384D54E73722A2caE2b00f1348B1F2B59
Kaia	0x12af2AD0b90E08d0d70449E5d0b14afd14F9a24c	0x590e1060Eb2DB33D6A46Fb6927C08FD930A023D5
Metis	0xDA53A7251f08ac9D59E977D0032a1521832A6Ac9	0xb5722C7ED74bD8D829754383C0E65f9F7e9bacD6

Interfaces

interface IHeroBridgeLZ {

    event HeroArrived(uint256 indexed heroId, uint256 arrivalChainId);
    event HeroLZBridgeReceived(uint32 srcEid, address sender, address receiver, uint256 heroId);
    event HeroLZBridgeSent(uint32 srcEid, address sender, address receiver, uint256 heroId);
    event HeroSent(uint256 indexed heroId, uint256 arrivalChainId);

    function bridgeHero(uint32 _dstChainId, address _receiver, uint256 _heroId) payable;
    function bridgeHeroes(uint32 _dstChainId, address _receiver, uint256[] _heroIds) payable;
    function estimateHero(uint32 _dstChainId, address _receiver, uint256 _heroId) view returns (tuple(uint256 nativeFee, uint256 lzTokenFee) fee);
    function estimateHeroes(uint32 _dstChainId, address _receiver, uint256[] _heroIds) view returns (tuple(uint256 nativeFee, uint256 lzTokenFee) fee);

}

ABIs

25KB

HeroBridgeLZDiamond.json