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Bridge Token

To establish the connection between chains, the Bridge utilizes the exoswap token to create a mapping with the donor token.

The whole design is simple. It is an ERC-20 contract with mint/burn functions, where Bridge Token Manager will handle the token mapping, and the Bridge Router will only have access to perform this operation.

Base functionality​

The core and important logic for bridge token

mint​

function mint(address to, uint256 amount) external;
  • Allows only Bridge Router to perform this operation by EOA/Contract;
  • Should mint only in the same equivalent as locked donored tokens;

burn​

function burn(address from, uint256 amount) external;
  • Allows only Bridge Router to perform this operation by EOA/Contract;
  • Should burn only in the same equivalent for next donored tokens unlock;

Donored token symbol changed?​

In case donored token changes its symbol (like proxy contract), the following changes could be made to update it for Exoswap Token by SAO.

updateTokenInfo​

function updateTokenInfo(
    string calldata _newName,
    string calldata _newSymbol,
    uint8 _newDecimals
) external;
  • Allows only Bridge Router to perform this operation by SAO;
  • Should not change decimals;

NOTE: updateTokenInfo function is not implemented for bridge usage (will be in Version 1).