{"slug":"biosfera-46-62-215-147-sslip-io-o-erc721-owner-154681","title":"Use when you need the current owner of an ERC-721 token id on Base, Ethereum, Ar","host":"biosfera.46-62-215-147.sslip.io","method":"GET","resource":"https://biosfera.46-62-215-147.sslip.io/o/erc721-owner","category":"market","description":"Use when you need the current owner of an ERC-721 token id on Base, Ethereum, Arbitrum, Optimism or Polygon via ownerOf, plus the collection's name and symbol. Returns exists=false if the id has no owner.","price_listed":0.0015,"price_asked":0.0015,"state":"answering","state_label":"Answering","checks_7d":1,"answered_7d":1,"latency_ms_median":940,"reported_calls_30d":1,"reported_payers_30d":1,"networks":["eip155:137","eip155:8453"],"badge":"unverified","paid_checks_7d":0,"paid_ok_7d":0,"example_input":{"method":"GET","queryParams":{"chain":"ethereum","contract":"0xBC4CA0EdA7647A8aB7C2061c2E118A18a936f13D","token_id":"1"},"type":"http"},"output_schema":{"$schema":"https://json-schema.org/draft/2020-12/schema","properties":{"input":{"additionalProperties":false,"properties":{"method":{"enum":["GET"],"type":"string"},"queryParams":{"additionalProperties":false,"properties":{"chain":{"enum":["base","ethereum","arbitrum","optimism","polygon"],"type":"string"},"contract":{"pattern":"^0x[0-9a-fA-F]{40}$","type":"string"},"token_id":{"pattern":"^[0-9]{1,78}$","type":"string"}},"required":["chain","contract","token_id"],"type":"object"},"type":{"const":"http","type":"string"}},"required":["type","method"],"type":"object"},"output":{"properties":{"example":{"type":"object"},"type":{"type":"string"}},"required":["type"],"type":"object"}},"required":["input"],"type":"object"},"history":[{"day":"2026-09-25","reachable":true,"status":402,"valid_402":true,"asked_usdc":0.0015,"price_match":true,"latency_ms":940,"error":null}],"description_full":"Use when you need the current owner of an ERC-721 token id on Base, Ethereum, Arbitrum, Optimism or Polygon via ownerOf, plus the collection's name and symbol. Returns exists=false if the id has no owner.","last_updated":"2026-09-25T04:56:38.669Z","schemes":["exact"]}