ERC-20
ERC-20 is the technical standard nearly all Ethereum tokens follow — a fixed menu of functions (`transfer`, `balanceOf`, `approve`...) that lets any wallet
ERC-20 is the technical standard nearly all Ethereum tokens follow — a fixed menu of functions (`transfer`, `balanceOf`, `approve`…) that lets any wallet, exchange, or dApp handle any compliant token identically. USDT, UNI, and thousands more are ERC-20s.
Why it matters
Standards are why Ethereum’s token economy composes: build to ERC-20 once, work everywhere forever. For users, the practical upshot is that approving and moving any ERC-20 works the same way — and the same approval hygiene applies to all of them.