This is a sample project of OpenZeppelin contracts.
- contracts/GLDToken.sol: a smart contract implements ERC-20.
- contracts/GameItem.sol: a smart contract implements ERC-721.
- contracts/GameItems.sol: a smart contract implements ERC-1155.
- GitHub: https://github.com/OpenZeppelin/openzeppelin-contracts
- Documentation: https://docs.openzeppelin.com/contracts