1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9286fd7862538705368c9632815e07e1481ca66e52b2aa6a1035d8fe54112642. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b5a64cb6-7571-43e0-b6d3-4fecd9390417.json and https://artists.proofprofile.net/proofs/artist/b5a64cb6-7571-43e0-b6d3-4fecd9390417.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e1fba9789e2d98d93b58c1856cb4e1fed7ed7c3fb446eb8b64d6648043a658c. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USDCH1045402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b80c7602d2ff48806af7f0f7dff1812523f925bba3ff7974517a246481a9911. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USDCH1045403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e496daee59c8b0e11cb3d4cb8417d4e465e1c91867cd9508fd19fa0870c5e5f. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USDCH1045404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d032bf34dd329864136f98ed593bf3d2ab61757a765f7165771531f850fd0a5. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USDCH1045406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f966a4915fcffd35f3df105a85e4cac81941ca797b68f9c2873e6130ef72547. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USDCH1045407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46dfcba62b88b65bb80f92ada3801823fc91aedc8c68087bad924fb30a35fe2e. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USDCH1042266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62c1b0e7a14045554951ac23c4143a5549b992be0ab5933e0e62f02326439004. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USDCH1042319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19818682e83cd361b57a8083c9302b99a7a8981ea4567636ff0be799b02c0001. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USDCH1042320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1607c170d74e0085452410a259d28b4b4ba7f9ea1c71ef08bc30d51f8a45fa4. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:43:15Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USDCH1042322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x904c3192f5e0f32db2d4033baeca18aaab7de1dc8538d8bf6f47a2d85bae81f3. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T17:03:06Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USDCH1042325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f6ecf4095b95945c3038543a056857336ed78f943f2805a9c0e2a25b49e2a85. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/INA5F2200666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91e8f61c1256e76a1bd316baa19d869f1042e72c8b5fbcb56b13d85d8b6ebd86. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/INA5F2200667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b6d34da53b6d36f376332409ef93d7ba1ac52b3ea003975d40d6d881f4396d0. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/INA5F2200668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67363afe5feddf8ac940e9a1bbb2bd94f63ed10dab4cdbc78e83c29539e2df99. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USDCH1042247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cb2f8972f452c5b01055fa565e88563e37e73e7ac56ee3dbf49504f1f35a9b5. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T17:51:21Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USDCH1042249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7c3f3ad2446f34eeb7abade4a565b9c9634da95726781294b1f079ba4a6c6c8. Chain 2 (Bitcoin): anchored in block 957892 (2026-07-13T18:21:16Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/INA5F2201805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3d31054f10505aecc489b8980c2631e3eecf553dd5a6e766751421160329529. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/INA5F2201801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7247d6703ecb2807a52d87c803f4c91a3525dc8ef25d3aeaee66d153335fffd. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T19:00:15Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/INA5F2201802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28e407fe9edba1cd41b85620e1a99036606e71423b4bc5dbd1a4b9528618bca4. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/INA5F2201803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40c152d87aa150f04f907f984508358f3d412419c316035ec9a03a64631425d0. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/INA5F2201804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa709e61613c5d126380c60ba208f727f39ee027664f3562f789949715886de01. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/INH412406864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72d7b511bb3297f494ff7e6e554c415a2c0b8b99d90ce0746ef06e72b79533bf. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T22:11:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/INA5F2302335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1e1dac97f58555e96496f617a382d5c77d0ffe7231c8c83448bba295c093fed. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/INA5F2302329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb41cd47e9725230054d72fc322d741131f66af4ae93363109ca4c7fcbf7af4cf. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USDCH1042268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8702cdcbe64ad327e35171059c9b46b3d5a7fcee3f7d18004917aaf72eb24d12. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USDCH1045423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x332dd88362d61550776227b1699e0708354fc79ef1f7f7f523774c5b6fe9866e. Chain 2 (Bitcoin): anchored in block 958380 (2026-07-17T07:07:02Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USDCH1045424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81c6e89425078411cbb24d6b7cd9259ea316845fa3c554f3ec40c84d3a75c2c9. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:16:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USDCH1045427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x429c577e64e0f64d7a0db178ec7138a6264536662e887608dd682f19b360f114. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USDCH1045430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3af801e6ef937f54f28532f81aae75332b4c04c4af4218776be26c30100fb9f2. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:42:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USDCH1045395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x429c577e64e0f64d7a0db178ec7138a6264536662e887608dd682f19b360f114. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USDCH1045430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89777cba269e397cde6fd029d0840fc494b63f9943df35c9b2a7a3a349937b01. Chain 2 (Bitcoin): anchored in block 958380 (2026-07-17T07:07:02Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USDCH1045429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x332dd88362d61550776227b1699e0708354fc79ef1f7f7f523774c5b6fe9866e. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USDCH1045424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8702cdcbe64ad327e35171059c9b46b3d5a7fcee3f7d18004917aaf72eb24d12. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USDCH1045423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05af49693955ac07374ee1b43f9693a1362321e9e38ba39e3e02f279cc254a98. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/INH412400403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91e8f61c1256e76a1bd316baa19d869f1042e72c8b5fbcb56b13d85d8b6ebd86. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/INA5F2200667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19818682e83cd361b57a8083c9302b99a7a8981ea4567636ff0be799b02c0001. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USDCH1042320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62c1b0e7a14045554951ac23c4143a5549b992be0ab5933e0e62f02326439004. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USDCH1042319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x194e3e6670bdb72d87671c3f2619005d996ec47ac750317a34ca74349b55e9ae. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:16:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USDCH1042324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40c152d87aa150f04f907f984508358f3d412419c316035ec9a03a64631425d0. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-21T09:12:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/INA5F2201804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28e407fe9edba1cd41b85620e1a99036606e71423b4bc5dbd1a4b9528618bca4. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/INA5F2201803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3d31054f10505aecc489b8980c2631e3eecf553dd5a6e766751421160329529. Chain 2 (Bitcoin): anchored in block 958644 (2026-07-19T02:21:25Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/INA5F2201801.