Glossary
ERC-721A
A gas-optimized ERC-721 implementation by Azuki — batched minting that lets a buyer mint many tokens in one transaction at a fraction of the gas cost.
ERC-721A was open-sourced by the Azuki team in early 2022. The implementation is fully compatible with the ERC-721 interface, but batched minting writes a single ownership record for a range of sequential token IDs instead of one per ID — dropping the gas cost of minting N tokens from O(N) to roughly O(1) for the storage writes.
The standard became the default for large generative-art NFT mints on Ethereum because it dramatically lowered gas during congested mint windows.