In the latest version of our app, you may notice an additional one-time transaction ("Add Mint Extension") when publishing a single ERC-721 or ERC-1155 token from your contract.

This is a new contract safeguard activated the first time you mint, designed to guarantee the sequential order of your token IDs and prevent accidental double mints. This is a known issue on other platforms, we've resolved to fix this for Manifold creators who value the integrity of their token collection.