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Use it before sending a payment or storing bank details. Pure computation: the IBAN is not stored or forwarded, and no account existence check is made.","extensions":{"bazaar":{"info":{"input":{"method":"GET","queryParams":{"iban":"NL91ABNA0417164300"},"type":"http"},"output":{"example":{"bank_code":"ABNA","checksum_ok":true,"country":"NL","electronic":"NL91ABNA0417164300","length_ok":true,"printed":"NL91 ABNA 0417 1643 00","valid":true},"type":"json"}},"schema":{"$schema":"https://json-schema.org/draft/2020-12/schema","properties":{"input":{"additionalProperties":false,"properties":{"method":{"enum":["GET"],"type":"string"},"queryParams":{"properties":{"iban":{"description":"IBAN, spaces allowed.","pattern":"^[A-Za-z]{2}[0-9]{2}[A-Za-z0-9 ]{8,40}$","type":"string"}},"required":["iban"],"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"}}},"lastUpdated":"2026-10-14T22:53:59.764Z","quality":{"l30DaysTotalCalls":2,"l30DaysUniquePayers":2,"lastCalledAt":"2026-10-14T22:53:59.491Z"},"resource":"https://opendata402.com/v1/validate/iban","serviceName":"opendata402","tags":["iban","banking","validation","payments","sepa"],"type":"http","x402Version":2},"source":"x402_bazaar","summary":"Validate an IBAN: country, expected length, ISO 13616 mod-97 check digits, and the bank code part for common countries (NL, BE, DE, FR, GB, ES, IT, AT, CH, LU), plus the electronic and printed formats. Use it before sending a payment or storing bank details. Pure computation: the IBAN is not stored or forwarded, and no account existence check is made."},"body_sha256":"5ea50f6fb2347a74bf415307e1e38f1555622409af20978d555dd8f90b710c55","prev_id":null,"leaf":"0xed52ba1d94f2d52f83b32bb994188982ce64d1e6595838af2414579b19384b4c","leaf_text":"{\"body\":\"5ea50f6fb2347a74bf415307e1e38f1555622409af20978d555dd8f90b710c55\",\"id\":117727,\"kind\":\"listing\",\"method\":\"baseline/1\",\"observed_us\":1793025611825630,\"prev\":null,\"subject\":\"x402_bazaar:https://opendata402.com/v1/validate/iban\",\"subject_kind\":\"source_record\"}","day":{"day":"2026-10-26","leaves":296695,"root":"0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8","chained":"0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a","anchor_chain":"eip155:5042002","anchor_tx":"0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae","anchor_block":69251483},"proof":["0xed52c10339a03c011b10b96599dcee2cbb806152922e3f9ee7a78132ed5b77e9","0xbefe9c0dbe371f246cd7db28dcc0d877e0fda8f3e9f3ee3a9bffc70807db5049","0xf3de4ca6cee91c87ddef2413677bdab7be0d554552066638746a7a0285e51d68","0xbb66845676a126e14346ddd2b5e68924ed05f4092f696b20b3ba40d3d6be90e6","0x549baf49c4e77c3c2b19847228fc13a7c1b7078a99effe14d4403792f0d33929","0x04ae6066addb0b822df60763ff32e3ea60728545f1fbb9af2731a44b0134c2f3","0x7eb343c620609f7ca4e93cfd822f3cb0c943b0c093432fd2826fedd5f8b6abff","0xb9186939110b19e10eaf2e97372105a74f60a626b87a9710994652aa01044d41","0x23a488f39d9ef5e7319c35a6d41a9cb9cca6c214c02346c750ba7df46d6a6e3b","0x6c23cb72ed5e32360c8c43188de0875681092b01554d2a31d5f096fdae959492","0x3f07a2115848067024e2992cb2c05a86eb8d02df5abfcead8bc47854e501603e","0xe158f09cdbfb4f7be1bfd45fce3afcad32c2b3bb2fc2e181dadc193bbf194bfc","0x746e9e5b6765727b6b96f41204cc115b0302259f6c67be0cf0efbf245601d500","0x614d844c9e0509d9f9e63697aa2935555bce5f13695a8dc0047aa9e9898d70b3","0x95657a7d540ed6cac0bde9995782333b2562a9a6641853269ac95148827410f0","0x5fb5dda563336cd1bc1b9f44c52b76237ae72ed2145cb9290f39f304ca7dd678","0x74a0a08e4e7ab9aa5bfbead33dec7e1c7e8e364cff69a63720d764bbe987aadc"]}