This repo contains a set of four Solidity smart contracts that make use of the ERC20 token standard. They are intended to be gas efficient implementations and safegaurd against known smart contract anti-patterns.
- Solidity contract 1: ERC20 with sanctions. An ERC20 token that allows an admin to ban specified addresses from sending and receiving tokens.
- Solidity contract 2: ERC20 with god mode. A special address is able to transfer tokens between addresses at will.
- Solidity contract 3: ERC20 bonding curve token. The more tokens a user buys, the more expensive the token becomes.
- Solidity contract 4: Untrusted escrow. A contract where a buyer can put an arbitrary ERC20 token into a contract and a seller can withdraw it 3 days later.
$ forge build$ forge test$ forge fmt