Token Standards (ERC-20, ERC-721, ERC-1155)

The interface standards that let wallets, exchanges, and other contracts interact with any token the same way — fungible, non-fungible, and multi-token.

Read

45 min

Practice MCQs

25

Interview QA

25

Edition

v3

Editorial status

Reviewed

Relevant for

Blockchain Developer

Scope: ERC-20, ERC-165, ERC-721, ERC-1155, ERC-2612, ERC-2981, and ERC-4906 specifications; OpenZeppelin Contracts 5.x documentation reviewed 2026-09-04.