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 0x72ba4a0557bfdd628d341fe06ec0fdddac7e9dccbb63c518972976a11417677a. 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/f34a693d-ffed-4c3e-a19e-05655858b025.json and https://artists.proofprofile.net/proofs/artist/f34a693d-ffed-4c3e-a19e-05655858b025.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 0x2935d4a614fe5668e91d438b6686ff35ac1ea332217cc9804f1f1c2bad4c5c85. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:04:38Z), 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/PLE781501240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a7bb1ba70f3c3b48af8f3031f1d6dca9ab247a58ef7231d25ce040b4781eff6. 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/PLE781501241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fe27ad0fcabeeaa36bad7e7e5cb41045e2b7663a1324e02b42f5709c01d7a12. 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/PLE781501243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b1c670009285429a9767d74dca2aac2a12e80f5a6f6bddcbaf574a9c7c9a0a7. 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/PLE781501246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04dda8405e8b7ba4d2494ddde7c0065a522407e8d5f889b09dfe6605b1f33339. 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/PLE781501248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54baa60d1318badf48f639b14d13a90e1eaed3ad6339ded82034e92f48de2841. Chain 2 (Bitcoin): anchored in block 959096 (2026-07-22T03:48:36Z), 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/PLE781501250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x068464a1a3e97d0d0aabad5db9237e38c90f1df209f8f47b76fea8796c61b67c. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-20T13:57:36Z), 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/PLE781501251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5b4856405f48619d5c751b59e75c37ecf105b3d199c6f8c649fd925e94c060e. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/PLA440300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08d311b1369a14cf07100e51fddd55d0ac70c4b14debe3fcf0fa58cbdd8bc9aa. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T18:19:17Z), 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/PLA440300013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd75a2b9d955e6dc2155bfb3cca9f9109419c818f99bee05ab0f4dacea33ee19. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/PLA440300011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3884f6b4e91251d26b357e720fdec5f2534cf018080725c299c133426d3c0dbf. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T20:13:58Z), 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/PLA440300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5adf7c80a28420687e941db7dd532e600f961d160e285e2596a1185e52c76f2b. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/PLI365134720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02577ff336a252a164618a698d5b2aff3813ad6ff7ab71ddfb5edb1c25d56c50. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/PLI365136120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19846d2f698f27643fd74b6448a8ba22b7a90763487510e45dbcf71bf3adbae2. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/PLI365136170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68f97d556158854c0fc0ef166ba3c6c251e9a9c9ff3a627efa9cad0c32eeace9. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:38:25Z), 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/PLI365136190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba0df54a9a6f76c0f03bd97f6b7ccc4c468e3d3ac76439ec031f76ca17173149. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/PLI366238020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x128ed4495497bd2f30fe9779c6cb42afb535cc87259023ba8cf41179c148e107. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/PLI366238030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ae582d3008d5a794ae73dbfe46391bdc769e71a39a18624077b8e5b5b0baf13. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/PLI366698220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaed9318a4e4654bf10ce5296ff18244520e51d9e9a657d18222f2379b370d466. 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/PLI366698270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9b1589f9031658bed8a2fb06a687b11f66b9f9315c6799589aabd84a2ba6c35. 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/PLI366698340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3b78300cc33cd2ed42ec6f02f6cb49959b83d019bfad4c825e9e029a907b4e3. 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/GBWUL2026094.