Relay Chain Contract

MOSRelay

Contract Address

Here to get MAPO mainnet and testnet MCS contract address.

contract interface

interface RelayChainContract {
    
	function transferOutToken(address _token, bytes memory _to, uint256 _amount, uint256 _toChain) external;
    
    function transferOutNative(bytes memory _to, uint _toChain) external;
    
    function depositToken(address _token, address _to, uint _amount) external;
    
    function depositNative(address _to) external;
    
    function transferIn(uint256 _chainId, bytes memory _receiptProof) external;

    function withdraw(address _vaultToken, uint256 _vaultAmount) external;

}

User Interface

transferOutToken

Cross-chain transfer of tokens

function

function transferOutToken(address _token, bytes memory _to, uint256 _amount, uint256 _toChain) external

parameters

parameter	type	comment
_token	address	Token address to transfer tokens from
_to	bytes	The destination chain receiving address of the token to be transferred out
_amount	uint256	Amount of tokens to be transferred
_toChain	uint256	Target chain id to transfer out

transferOutNative

Cross-chain transfer out of the native token

function

function transferOutNative(bytes memory _to, uint256 _toChain) external

parameters

parameter	type	comment
_to	bytes	The destination chain receiving address of the token to be transferred out
_toChain	uint256	Target chain id to transfer out

depositToken

The deposit tokens are in the chain

function

function depositToken(address _token, address _to, uint _amount) external

parameters

parameter	type	comment
_token	address	Token address to transfer tokens from
_to	address	The destination chain receiving address of the token to be deposited out
_amount	uint	Amount of tokens to be deposited

depositNative

The deposit native tokens are in the chain

function

function depositNative(address _to) external

parameters

parameter	type	comment
_to	address	The destination chain receiving address of the token to be transferred out

withdraw

Withdraw staked tokens and earnings

function

function withdraw(address _vaultToken, uint256 _vaultAmount) external

parameters

parameter	type	comment
_vaultToken	address	valut token address
_vaultAmount	uint256	Amount of tokens withdraw

Messenger Interface

transferIn

Perform cross-chain transfer

function

function transferIn(uint256 _chainId, bytes memory _receiptProof) external

parameters

parameter	type	comment
_chainId	uint256	source chain id
_receiptProof	bytes	source chain transfer proof

depositIn

Perform cross-chain deposit

function

function depositIn(uint256 _chainId, bytes memory _receiptProof) external

parameters

parameter	type	comment
_chainId	uint256	source chain id
_receiptProof	bytes	source chain depsoit proof

Data structure

ReceiptProof includes the proof and the receipt to prove.

struct receiptProof {

    // the block header where the receipt exists
    blockHeader header;
    // This is the structure that contains the transaction log
    TxReceipt txReceipt;
    // the index of the receipt in the block
    bytes keyIndex;
    // the proof to prove the existance of the above receipt
    bytes[] proof;

}