# Item Bridge V2

The **LayerZeroV2 Item Bridge** processes the cross-chain bridging of ERC-20 and ERC-1155 tokens. It is available between **DFK Chain, Kaia, and Metis**.

{% hint style="info" %}
The Item Bridge is built in partnership with [Layer Zero](https://layerzero.network/) using their V2 Messaging protocol. For more information, visit their documentation at: <https://layerzero.gitbook.io/docs/>.

Use [Layer Zero Scan](https://layerzeroscan.com/) (<https://layerzeroscan.com/>) to track the progress of bridged items.
{% endhint %}

### Chain ID

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

* DFK Chain: `53935`
* Kaia: `8217`
* Metis: `1088`

### 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` or `multiEstimateFeeSendERC20`
* ERC-1155: Use `estimateFeeSendERC1155`

### Contract Addresses

| Name      | Mainnet                                      | Testnet                                      |
| --------- | -------------------------------------------- | -------------------------------------------- |
| DFK Chain | `0x409E6CDE3119584074E162dcCC6C86433251C36f` | `0x46B76162C36D97a8347C21fd85fd662e87F6ea28` |
| Kaia      | `0x1679b50950aFF40983716b91862BB49eeE9718b9` | `0xc209aDB7d839921060CF425bA7F72524A356EcFd` |
| Metis     | `0x3E5b5826A8670DB5157c257d5e001F9C73141514` | `0x82995f66e9c6eC23069eE040Dc86dfcc1A2fa5fD` |

### Interfaces

```solidity
interface IItemBridgeLZ {

    event ERC1155Received(uint32 _srcChainId, address _srcAddress, address receiver, address item, uint256 amount, uint256 id);
    event ERC1155Sent(uint32 _dstChainId, address sender, address item, uint256 amount, uint256 id);
    event ItemReceived(uint32 _srcChainId, address _srcAddress, address receiver, address item, uint256 amount);
    event ItemSent(uint32 _dstChainId, address sender, address item, uint256 amount);

    function estimateFeeSendERC1155(uint16 _dstChainId, address _receiver, address _item, uint256 _amount, uint256 _id) view returns (tuple(uint256 nativeFee, uint256 lzTokenFee) fee);
    function estimateFeeSendERC20(uint16 _dstChainId, address _receiver, address _item, uint256 _amount) view returns (tuple(uint256 nativeFee, uint256 lzTokenFee) fee);
    function multiEstimateFeeSendERC20(uint16 _dstChainId, address _receiver, address[] _items, uint256[] _amounts) view returns (tuple(uint256 nativeFee, uint256 lzTokenFee) fee);
    function multiSendERC1155(uint16 _dstChainId, address _receiver, address[] _items, uint256[] _amounts, uint256[] _ids) payable;
    function multiSendERC20(uint16 _dstChainId, address _receiver, address[] _items, uint256[] _amounts) payable;
    function sendERC1155(uint16 _dstChainId, address _receiver, address _item, uint256 _amount, uint256 _id) payable;
    function sendERC20(uint16 _dstChainId, address _receiver, address _item, uint256 _amount) payable;

    
}
```

### ABIs

{% file src="/files/blPnXNhAkRYE88yzGxcX" %}


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://devs.defikingdoms.com/contracts/bridging/item-bridge-v2.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.