{"slug":"saylorinnovations-com-api-validate-identifier-70a448","title":"Validate identifiers by check digit","host":"saylorinnovations.com","method":"GET","resource":"https://saylorinnovations.com/api/validate/identifier","category":"company","description":"Validate identifiers by check digit - ISIN, CUSIP, SEDOL, LEI, ISBN, EAN or UPC, IMEI, VIN, ORCID, ISSN, NPI, DOI and cards, or auto-detect the type","price_listed":0.01,"price_asked":0.01,"state":"answering","state_label":"Answering","checks_7d":1,"answered_7d":1,"latency_ms_median":288,"reported_calls_30d":0,"reported_payers_30d":0,"networks":["eip155:137","eip155:42161","eip155:8453","solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp"],"badge":"unverified","paid_checks_7d":0,"paid_ok_7d":0,"example_input":{"method":"GET","queryParams":{"type":"isin","value":"US0378331005"},"type":"http"},"output_schema":{"$schema":"https://json-schema.org/draft/2020-12/schema","properties":{"input":{"additionalProperties":false,"properties":{"method":{"enum":["GET"],"type":"string"},"queryParams":{"properties":{"type":{"description":"optional auto (default, tries all) or luhn, credit_card, imei, isin, cusip, sedol, lei, isbn10, isbn13, gtin, issn, orcid, npi, vin, doi","type":"string"},"value":{"description":"The identifier to check","type":"string"}},"required":["value"],"type":"object"},"type":{"const":"http","type":"string"}},"required":["type","method"],"type":"object"},"output":{"properties":{"example":{"properties":{"country":{"description":"Country name","type":["string","null"]},"nsin":{"description":"National security identifier part of an ISIN","type":["string","null"]},"source":{"description":"Data source the values come from","type":"string"},"type":{"description":"Type or kind","type":"string"},"valid":{"description":"True when the input passed validation","type":"boolean"},"value":{"description":"Value of the requested item","type":"string"}},"required":["value","source"],"type":"object"},"type":{"const":"json","type":"string"}},"required":["type"],"type":"object"}},"required":["input"],"type":"object"},"history":[{"day":"2026-10-20","reachable":true,"status":402,"valid_402":true,"asked_usdc":0.01,"price_match":true,"latency_ms":288,"error":null}],"description_full":"Validate identifiers by check digit - ISIN, CUSIP, SEDOL, LEI, ISBN, EAN or UPC, IMEI, VIN, ORCID, ISSN, NPI, DOI and cards, or auto-detect the type","last_updated":"2026-10-20T14:52:28.378Z","schemes":["exact"]}