{"id":117790,"recorded_at":"2026-10-26T14:40:11.897276Z","observed_at":"2026-10-26T14:40:11.897241Z","subject_kind":"source_record","subject":"x402_bazaar:https://otp.openverbs.com/v1/hotp","kind":"listing","method":"baseline/1","body":{"endpoints":[["x402","https://otp.openverbs.com/v1/hotp"]],"name":"HOTP (counter-based)","owner_address":"0xb3f4de103f34b99f0da19b4f16d6b53a14c2194a","raw":{"accepts":[{"amount":"4000","asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","extra":{"name":"USD Coin","version":"2"},"maxTimeoutSeconds":300,"network":"eip155:8453","payTo":"0xb3f4de103F34b99f0Da19B4F16D6B53a14C2194A","scheme":"exact"}],"description":"Generate an RFC 4226 counter-based HMAC one-time password from a base32 secret and counter. Configurable digits (6–10, default 6) and algorithm (SHA1/SHA256/SHA512, default SHA1). An invalid base32 secret is a clean 400.","extensions":{"bazaar":{"info":{"input":{"body":{"algorithm":"SHA1","counter":1,"digits":6,"secret":"example"},"bodyType":"json","method":"POST","type":"http"}},"schema":{"$schema":"https://json-schema.org/draft/2020-12/schema","properties":{"input":{"additionalProperties":false,"properties":{"body":{"additionalProperties":false,"properties":{"algorithm":{"description":"HMAC algorithm. Default SHA1.","enum":["SHA1","SHA256","SHA512"],"type":"string"},"counter":{"description":"The HOTP counter value.","minimum":0,"type":"integer"},"digits":{"description":"Number of code digits. Default 6.","maximum":10,"minimum":6,"type":"integer"},"secret":{"description":"Base32-encoded shared secret.","maxLength":1024,"minLength":1,"type":"string"}},"required":["secret","counter"],"type":"object"},"bodyType":{"enum":["json","form-data","text"],"type":"string"},"method":{"enum":["POST"],"type":"string"},"type":{"const":"http","type":"string"}},"required":["type","method","bodyType","body"],"type":"object"}},"required":["input"],"type":"object"}}},"lastUpdated":"2026-10-05T12:11:02.31Z","quality":{"l30DaysTotalCalls":1,"l30DaysUniquePayers":1,"lastCalledAt":"2026-10-05T12:11:02.042Z"},"resource":"https://otp.openverbs.com/v1/hotp","serviceName":"HOTP (counter-based)","tags":["hotp api","generate hotp","counter based otp","hmac one time password","rfc 4226 code"],"type":"http","x402Version":2},"source":"x402_bazaar","summary":"Generate an RFC 4226 counter-based HMAC one-time password from a base32 secret and counter. Configurable digits (6–10, default 6) and algorithm (SHA1/SHA256/SHA512, default SHA1). An invalid base32 secret is a clean 400."},"body_sha256":"28e4a3021c73bcb78ecc6162ec187784002a569d5cab8f808d0d20ba17e7404c","prev_id":null,"leaf":"0xddf9e774618887292947e005fc481bddf07aacd24ee0a9415dabfcffa1066c84","leaf_text":"{\"body\":\"28e4a3021c73bcb78ecc6162ec187784002a569d5cab8f808d0d20ba17e7404c\",\"id\":117790,\"kind\":\"listing\",\"method\":\"baseline/1\",\"observed_us\":1793025611897241,\"prev\":null,\"subject\":\"x402_bazaar:https://otp.openverbs.com/v1/hotp\",\"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":["0xddfa50d7423a25baebfb223060fa3b38eaf7c50ec01b5858c1d3299e0197bb68","0xb6e7e56ab4db1f3eeffde77cd99a046a9334496f2bd4ba5a6b2e50491e50dbc4","0xbedf64d70e374a8140d421208b2f69e0506997c96ca1e634dc9798f74fbf4744","0x4b39a44cb6e8f9b8530d91ab9985926e6fcbdb240e83a025806a2a4043da8bd8","0x4530ed4b677055dbc75100e36b55a92fa20c57ad0eab61c5b7267616dd903143","0xc3725022d818a1b7aa55e9829d39186455385c92af3dd24cd8ca12ae2d482dbe","0x7002090db235518a30bb3c63624db12bf3897e7b4a7caf206f534d404f90d245","0x60fa66dcbed68c01514df5266bc7d81f3165808d6413ebfd6b2da94209c9aa05","0x06f96ed1299c4f82ca8b50b2ed57aa679aa495512c7ba87c96ba1b0d9fe04930","0x12eb4e2b4ed9f7c86f939062c1dfe240b4ae07c2838ab2862752d9d227307515","0x85202061e6a75f8df085f0bff56604cbc8349d53f71525ea3c173296a57488dc","0xd5d3f9a510ef9bc1156a86fc24b9d0c3a67b96d7c1dad1563f35f879e0ac9b4b","0xa4edde833302b48399053e2519aea1aed1074cd102bf4b553643df1866cce4ec","0x0b7541c75cc482a7134110311d7dbd02095d969ba21177de9b21a52a55981718","0x6dc40f983a3840a0ad927a9ca17f4ff1e3b649a6c735e2a09b140db7c2caf13b","0x703f95866af09c5e5d6ead7411e9a10f964a41a2aff64d4a55ff0053c023a023","0xd0651cb9bc8155eb52b5247d506e74b8a935057dc190ba52091702ac25ed3a40","0x9a9024edb5069d88a324facb310a5ce8e495214bbaa968f077bede437390194f","0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a"]}