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 0xeb7609fd6038d6c9aeba9e587d6de2a3c235fe88c6c2989aec26ea035b6818b7. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/55521e0b-ee23-4a2e-bea5-02442020a050.json and https://artists.proofprofile.net/proofs/artist/55521e0b-ee23-4a2e-bea5-02442020a050.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 0x2d6ee04a3a7565e24b5c364baefc40d6afb2f90b0aa1f81e8e494a5ee1c33443. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/USA2P1675777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc506cb4d0a96979503affe985f383aabf056eb6430d0d0961438d35e4f124d82. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T05:45:43Z), 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/JMA271700627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe589e3ad2db83376b965ff1bb9d720777fc18d6c498dc587828c5e3d5b3e3bbf. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZFYY1990018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e951016b3d46b1a2fead667728818530eb05168cdb4b32e8d64baf50cc11524. 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/QZFZ21975582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c81da643aa9b7d5e991578242525e141ae63f5f99d558d4c776b2bce87c7eec. 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/TCAEJ1974977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdde9023ad06b8c90c1afdd99ecebbfb786e3cb0e8a5d98dfbdf24cefc35ac9a7. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/USA2P2032152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbe91752882890d2767b39452507e39d7d41d0d5766d91d518f552efbcb2b2cf. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:26:07Z), 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/QMBZ92023191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce76905d3e3ee22225004a2ac75316bea2aa3b2eba1b6e3852c64aaff68f8308. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QMFME2082574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dceeaf334d57ade2b168e2997f57ff1c319aaf49469e093669c7532eb97a484. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/QZNJX2085336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c101869d32b44c6691aa338191b320d16a89e5f921cc2b201efaab65c9c48d8. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/JMA272014695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c902c807c23a25572aa1d300a2b30d18a221acee983715bcee97d634cb2d005. 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/UKXN22174691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6672a37403db842e22bfc60af0f1725c2dd47872001555ae9caff7b3269b159a. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T21:44:24Z), 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/QZNJY2244776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79ac62b3977dfb769316162726ae887122b75337fe64f502461ddcf5ead4bd19. 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/QZW9L2262282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa904416033f01e405d6b808fad29f3f7966ee1b458c31211ced8a1a306a176d. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/DGA072292157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x504e6d639d3da803f38bd046227607389d3407cf78fbcc7e1967e682133c2127. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T04:30:31Z), 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/QZMZ92305463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x452c9d4afb081f5369f078ed6208a135722ac957326b8876d7c22de6ec48e667. 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/QZMZ92323105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9b005dfbfe3a75cd719c3950a6fbe8db2b973847da6ff2a3fc4b565355d56d0. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/QZTVM2382245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9fba6af62183913fdf58ad9343242ca354d8c2a73a68252833d40bbf541f266. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZTVM2382246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97cacdf9e2400a6166ce655a4201073b42dba1895eaa3c5a47864afd1ec519cf. 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/TCAHY2462497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e0882825b075fcc364737c42e3ef2c70a1d6bb66516826bf5d19050a9e92de2. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZ5AB2478912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe16c09fd06657f4a5262c2575b5487e654bec14ad1b6af60deb498304c60702a. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZNJY2436693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe65e7bf727c2a38cb0445589ed3281735b250adb01f7f4d8e0ed4172ce0eba36. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/QZNJY2467011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4041ec8145a04f3905b8020e6cb01c799e6ad9ea3233e0bffcd4df7f859a10e1. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/US38Y2417102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x908f0c4884101961102943d1c060a3871b65399d4a5fb04705a55c32a30c4c53. 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/US38Y2417103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1defec64fc99a8f84e358fb667e564358d6ba4334eab680b7acd3db7375a87f. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/QZGLM2551140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87eab2117dc0706ef0abf84e200bbfca3078119539a6764931aeba79a18fa695. 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/QZGLS2541146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e0882825b075fcc364737c42e3ef2c70a1d6bb66516826bf5d19050a9e92de2. Chain 2 (Bitcoin): anchored in block 956748 (2026-07-05T05:55:59Z), 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/QZ5AB2478912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29c8d163839ecf58d515b1222f8b4f555d686e276a723bfc0594d095f879db42. 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/QZGLS2541147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78042ced92b56a849efd16d02912e1cac30a0d773d922a8c3d13e8873da11285. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/US38Y2583904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5910905a8d33e32bb81f7a0fe4a9b625595e9941773140a8b25bb768a9834ed8. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZW9K2527924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29ba72c6a1d47925f4a9b6efad5b4363b4ba77b4962ccb067807186f69bca2d2. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZNJW2264334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e22100e916f97d5ff07d64978e6962e5087a788b260b8c7f1c637496da0f53d. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZNJW2264335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e0882825b075fcc364737c42e3ef2c70a1d6bb66516826bf5d19050a9e92de2. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZ5AB2478912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x763de92e1a27a092dda77062abbcef5d09465038a6ef6c83eb91258b830a287a. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZNJV2445738.