sendToFx

sendToFx cross chain means that the contract deployed on other chains communicates with f(x)Core through cross chain bridge to realize cross chain with f(x)Core.

supported external chains:

• Ethereum

• Binance Smart Chain

• Polygon

• Tron

• Avalanche

• Optimism

• Arbitrum

Bridge Contract

Mainnet

Chain	Contract Address
Ethereum	0x6f1D09Fed11115d65E1071CD2109eDb300D80A27
Binance Smart Chain	0x84238c00c8313920826D798e3cF6793Ef4F610ad
Polygon	0x4052eA614c5a96631C546d8B8d323a7C3D9ABb69
Tron	TKLDunqAynYcXRktcYHqncp3R6nJeEXLd5
Avalanche	0xDc3706d164d2D88b85ed702079ab331e2476D475
Base	0x7a986bA67227acfab86385FF33436a80E2BB4CC5

Testnet

Chain	Contract Address
Ethereum	0xd384a8e8822Ea845e83eb5AA2877239150615C18
Binance Smart Chain	0x4C0974BC7e3911a0682a1E17F0faD59A2eF4A637
Polygon	0x57b1E4C85B0f141aDE38b5573907BA8eF9aC2298
Tron	TAXdkUAde6ztmJyQqANL4jwDYab8D9shQs
Avalanche	0xe79893e4218a9d855Ef6beeA8366119b92007d64
Optimism	0xCA1c58AF317C88Cdb41d4AB17B50592771356E69
Arbitrum	0xCA1c58AF317C88Cdb41d4AB17B50592771356E69
Base	0x9164D153b8Af6D94d41E7876E814DD3Db1AEC320

Method

sendToFx

send token from external chain to f(x)Core

must be approved before calling this method

function sendToFx(address _tokenContract, bytes32 _destination, bytes32 _targetIBC, uint256 _amount) external;

• _tokenContract: the contract address of the token on the external chain

• _destination: the destination address on the f(x)Core chain or other cosmos chain

• _targetIBC: the target of the token on the f(x)Core chain(more details see Target)

  • _targetIBC represents cross chain destination, such as f(x)Core, Pundix, Marginx

  • destination f(x)Core: _targetIBC is empty

  • destination erc20 token: _targetIBC is erc20

  • destination other cosmos chain(example Pundix): _targetIBC is ibc/{id}/{prefix}.

    • id is the channel id of the target chain on f(x)Core(examples: Pundix: 0)

    • prefix is the address prefix of the target chain(examples: Pundix: px)

• _amount: the amount of the token to be cross chain

_destination convert address to bytes, if less than 32, fill in 0 in front, until 32 bytes

_targetIBC convert string to bytes, if less than 32, fill in 0 in behind, until 32 bytes

getBridgeTokenList

get cross chain token list

function getBridgeTokenList() external view returns (BridgeToken[] memory);

BridgeToken struct

struct BridgeToken {
    address addr;
    string name;
    string symbol;
    uint8 decimals;
}

checkAssetStatus

check if the token is supported cross chain

function checkAssetStatus(address _tokenAddr) external view returns (bool status);

• _tokenAddr: the contract address of the token on the external chain

• status: true means good condition