{"uid":"cap_y_dmVz2PtRtOeD1xNA_yO","slug":"nft-owner-lookup-by-token-id-erc-721-multi-chain-2cc3b31d","name":"NFT Owner Lookup by Token ID (ERC-721, Multi-Chain)","description":"Current owner of an ERC-721 NFT by token_id (ownerOf), with collection name and tokenURI. Works on Base, Ethereum, Arbitrum, Optimism, Polygon, BNB Chain, Avalanche, Gnosis, Linea, Scroll, Sonic and Unichain.","url":"https://api.vextorium.com/nft-propietario-pago?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"red":{"enum":["base","ethereum","arbitrum","optimism","polygon","bnb","avalanche","gnosis","linea","scroll","sonic","unichain"],"type":"string","description":"Chain (default base)"},"contrato":{"type":"string"},"token_id":{"type":"string"}}},"responseSchema":{"type":"json","example":{"red":"ethereum","nombre":"BoredApeYachtClub","token_id":"1","coleccion":"0xBC4CA0EdA7647A8aB7C2061c2E118A18a936f13D","token_uri":"ipfs://QmeSjSinHpPnmXmspMjwiXyN6zS4E9zccariGR3jxcaWtq/1","propietario":"0x46EFbAedc92067E6d60E84ED6395099723252496"}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.003","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.003/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.003","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.003","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_YM-OqtX4UxHS7oGHZiy1i","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.003","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns the current owner address, collection name, and tokenURI of an ERC-721 NFT given its contract address and token ID, across 12 supported EVM chains.","exampleAgentPrompt":"Who currently owns Bored Ape #1 on Ethereum? The contract is 0xBC4CA0EdA7647A8aB7C2061c2E118A18a936f13D and the token ID is 1.","exampleUseCases":[{"title":"NFT provenance check for marketplace","prompt":"Can you tell me who currently owns token ID 5678 of the CryptoPunks contract 0xb47e3cd837dDF8e4c57F05d70Ab865de6e193BBB on Ethereum, and what the tokenURI points to?"},{"title":"Verify NFT ownership before airdrop","prompt":"I need to confirm the owner of token ID 42 from the NFT collection at contract 0x23581767a106ae21c074b2276D25e5C3e136a68b on Base before I send the airdrop."},{"title":"Cross-chain NFT wallet attribution","prompt":"Look up who owns token ID 100 from contract 0x...abc on Polygon — I need the owner's wallet address and the collection name."}],"resultDescription":"A JSON object containing the blockchain name ('red'), collection name ('nombre'), token ID, contract address ('coleccion'), tokenURI ('token_uri'), and the current owner's wallet address ('propietario').","failureModes":["Contract address is not a valid ERC-721 contract — returns null fields","Token ID does not exist in the collection — may return null or revert","Unsupported chain specified — schema validation error","Non-enumerable or burned token may return zero address as owner","Network RPC timeout causing delayed or failed response"],"whenToPreferThis":"Use this endpoint when you need to resolve the current owner of a specific ERC-721 NFT token and retrieve its metadata URI and collection name in a single call, across any of 12 supported EVM chains. Prefer it over generic blockchain RPCs when you want structured, normalized output without handling raw ABI calls yourself.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-20T18:57:12.853Z","isFirstParty":false,"canonicalSlug":"nft-owner-lookup-by-token-id-erc-721-multi-chain-2cc3b31d"}