NFTs are unique on-chain assets — collectibles, game items, certificates, and tokenized real-world assets.
NFT Standards
ERC-721
The original NFT standard: every token ID is unique and individually owned. One contract = one collection; each item has its own ID.
ERC-1155
A multi-token standard: a single contract can manage many token types, both fungible and non-fungible, and move several of them in one transaction. Common in games and marketplaces.
Anatomy of an NFT
- Contract address — the collection.
- Token ID — the item within the collection.
- Owner — the address currently holding it.
- Metadata URI — a link (HTTP or IPFS) to a JSON document with the item’s name, description, and media.
What OpenScan.AI Shows
- NFT inventory on every address page — the collections and items an address holds.
- Transfer history — mints, sales, and transfers for each token ID, decoded from standard events.
- Metadata preview — name, image, and attributes resolved from the metadata URI where available.
Mints and Burns
- Minting creates a new token ID, visible in the explorer as a transfer from the zero address (
0x000…000). - Burning destroys an item — a transfer to the zero address.
Verifying Authenticity
Scammers copy collection names and artwork. Always confirm:
- The contract address matches the official collection.
- The item’s mint transaction traces back to the legitimate deployer.
- The collection shows expected holder and transfer counts in the explorer.
Next Steps
- Tokens (ERC-20) — fungible assets.
- Addresses — browsing holdings per address.