NFT addresses and identifiers explained
An EVM NFT lookup needs a network, contract address and token ID. The owning wallet, metadata URI and collection name are different fields.
NFT collection contract addresses
Choose a collection to see its contract address, network, variant notes and sources.
Choose the identifier you need
Start with an individual item’s details. Record its network, collection contract and token ID; use the owning wallet only when checking holdings.
| Task | Required context | Common mistake |
|---|---|---|
| Receive a token | Asset, network, recipient address, any memo/tag | Pasting the token’s contract |
| Look up an NFT | Network, contract, token ID | Pasting its owner’s wallet |
| Check EVM spelling | Complete 0x string | Assuming a checksum identifies the network |
Guides and tools
NFT collection contract addressesSearch official mappings and selected variants.NFT contract, wallet address and token IDIdentify the three different fields used to locate an EVM NFT and explain why the owning wallet is not the collection contract.How to find an NFT contract address and token IDLocate an NFT’s chain, contract and token ID in item details and cross-check them without connecting a wallet.NFT import errors: personal address detectedDiagnose a wallet or unsupported-contract address pasted into an NFT import field and check the required network and token ID.NFT collection vs individual token identifiersDistinguish a marketplace collection grouping from the contract and token ID that identify an individual NFT.ERC-721 vs ERC-1155 token IDsCompare unique ERC-721 ownership with ERC-1155 per-ID balances and understand why a token ID is not always a single edition.NFT token IDs: decimal, hexadecimal and large integersRead uint256 NFT token IDs without truncating large values or mistaking display formats for different tokens.ERC-1155 URI examples and the {id} placeholderWork through the 64-character lowercase hexadecimal token-ID substitution used by ERC-1155 metadata URIs.NFT metadata URI vs contract addressSeparate the on-chain NFT ledger from the URI for JSON metadata and the media link inside that JSON.How to verify an NFT collection contract identityBuild an evidence chain from an official project mapping to a network-specific explorer and distinguish identity from source-code verification.Original, wrapped and bridged NFT contractsUnderstand why an NFT’s original ledger, wrapper and bridged representation require separate network and contract identifiers.How to read NFT ownership without connecting a walletUse ERC-721 ownership and ERC-1155 balance queries to inspect public holdings while keeping claim rights and approvals separate.NFT owner, approved address and operator are different rolesRead ERC-721 approvals and ERC-1155 operator permissions without mistaking an approved account for the NFT owner.Read NFT identifiers from an item URLRecognize chain, contract and token-ID components in marketplace item links and cross-check them with visible details.
Before relying on an example
Specification fixtures are public text examples, not receiving instructions. Shapes containing an ellipsis or labels such as CONTRACT and CID are incomplete placeholders. A well-formed identifier does not establish a recipient, project identity or safe interaction.
Related references
Primary sources
Examples explain identifiers. They are not investment recommendations.