Metadata Integrity Checker

Samples tokenURI across a collection and classifies where the metadata actually lives. On-chain data and IPFS CIDs are content-addressed and cannot be swapped silently; an https URL is a promise from whoever owns that domain and can be repointed or removed whenever they choose. Also reports whether every token shares one base URI, since that means the owner can repoint the whole collection in a single transaction. Samples the token ids you give it. A collection can serve different metadata to different requesters, so a clean sample is evidence rather than proof. Where every token shares one base URI, the owner can repoint the entire collection in a single transaction — which the app tells you explicitly.