> For the complete documentation index, see [llms.txt](https://whitepaper.challenge.gg/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://whitepaper.challenge.gg/tokenomics/contracts/coin-contract.md).

# Coin Contract

The ChallengeCoin contract is an ERC20 token with a total supply capped at 1 billion tokens, ensuring scarcity and value stability. Built using OpenZeppelin's ERC20 framework, it provides a secure and reliable token for the Challenge.GG ecosystem. The contract assigns initial token ownership to a multisig wallet, enhancing security and governance by requiring multiple approvals for key transactions.

```solidity
// SPDX-License-Identifier: MIT
pragma solidity 0.8.21;

import {ERC20} from "@openzeppelin/contracts/token/ERC20/ERC20.sol";

/// @title ChallengeCoin (ERC20 token)
/// @author Challenge.GG
/// @dev The ChallengeCoin contract is an ERC20 token with a total supply capped at 1 billion tokens, ensuring scarcity and value stability. 
/// Built using OpenZeppelin's ERC20 framework, it provides a secure and reliable token for the Challenge.GG ecosystem.
/// The contract assigns initial token ownership to a multisig wallet, enhancing security and governance by requiring multiple approvals for key transactions.
contract ChallengeCoin is ERC20 {

    uint256 private constant MAX_SUPPLY = 10**9;

    constructor(string memory _name,  string memory _symbol, address _multisigOwner) ERC20(_name, _symbol) {
        _mint(_multisigOwner, MAX_SUPPLY * 10 ** decimals());
    }
}
```