Three real-world Solidity patterns on OpenZeppelin Contracts v5: role-gated ERC-20, owner-minted ERC-721, and a multi-role treasury.

erc20 erc721 hardhat openzeppelin smart-contracts solidity
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Three real-world Solidity patterns on OpenZeppelin Contracts v5: role-gated ERC-20, owner-minted ERC-721, and a multi-role treasury.

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#erc20#erc721#hardhat#openzeppelin#smart-contracts#solidity