# Receive event

After the event was made on the SRC chain and verified by the Signer, the last step of the protocol is receiving that event on the **DEST** chain. 

\
We can trust that event happened on the **SRC** chain if proof of this event was made by the correct signer. [Signers Registry smart contract](/for-developers/cross-chain-messaging-protocol/how-it-works/signers-registry-contract.md) is responsible for this validation.

In our example, to receive the event on the **DEST** chain, we have to call `receiveMyMessage` method on the `MsgReceiver`. 

```solidity
pragma solidity ^0.8.0;

contract MsgReceiver {
    event MyMessageReceived(string message);

    ISignersRegistry signersRegistry;

    constructor(address _signersRegistry) {
        signersRegistry = ISignersRegistry(_signersRegistry);
    }

    function receiveMyMessage(
        bytes calldata _signature,
        string memory _message,
        address _msgSender,
        uint256 _chainId,
        bytes calldata _transactionHash
    ) external {
        bytes32 eventHash = keccak256(abi.encodePacked("MyMessage", _chainId, _msgSender, _transactionHash, _message));
        address signer = eventHash.recover(_signature);
        bool isSignerWhitelisted = signersRegistry.isPublicWhitelisted(signer);
        
        require(isSignerWhitelisted, "Signer is not whitelisted");

        emit MyMessageReceived(_message);
    }
}

```

You can check, that [eventHash](/for-developers/cross-chain-messaging-protocol/how-it-works/signer-service/event-hash.md) was made the same way as Signer did while making the signature. It's very important to recover the signature with the same eventHash. 

After the signature maker was recovered, `signersRegistry` checked if the signer was whitelisted. That's why all public and private `Signers` have to be whitelisted before producing any event proofs.

If `signersRegistry` approved that the signer was whitelisted, it means that we can trust this event. Therefore, do any steps required by your dApp. 

In our example, it just emits the `MyMessageReceived` event. 

See the example of the `receiveMyMessage` transaction on the [explorer](https://polygonscan.com/tx/0x3b9c04a4d3d0061173be7654724a9114441f125bc5912a4b31e9bb3f39b4223c).


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