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 0xcccd00ac17bc2821a2af24a3241c1454b715a2598892a222b670fedcd4727b28. Chain 2 (Bitcoin): anchored in block 953772 (2026-06-15T10:33:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c5cc2c4c-ee47-404e-ae68-69a523ada30d.json and https://artists.proofprofile.net/proofs/artist/c5cc2c4c-ee47-404e-ae68-69a523ada30d.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 0x734927fa13cb2e3ca2922b8bb5372c01da54a6377d8caef8dda18d3700dcfaa9. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/DEZC62053914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43a448534be3b78a85d6d8f22b7fb0e7ce9b7b04d7cff402d16027640dbefc75. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:14:24Z), 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/DEZC62160697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02d87e1c94ba2ac7dfac0d37f2d1ebcd48fecbf67cae86cbe74a6dd094c5a802. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:43:55Z), 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/DEZC62160698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44ffbf6fcfd67e8aeb359ab3bf3cc829f1cb22a8833f6e751c7016324ec52d77. 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/DEZC62160699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf993659e6030116cff1649199228772d36a3aa892ce2f7f9472f2ad893203b97. 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/DEZC62160700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84d958657f5690f69348003b5011c775138f16712d48bab02ad036445673456f. 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/DEZC62160701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6787f1ce5482b59213177f82c2b1cd0b2ff752fca93edd70b9152ffd6c7d3da. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T19:51:26Z), 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/DEZC62160702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeca3bf92274da4f579256ee5f5594d7a87cbcd7d7d0a29422b1b988d1566919d. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/DEZC62200581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60cd7d31ac3e5305bc88a06f034ee6a80147148c4b3819020b1f33fd84c63f57. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/DEZC62200582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf07095e93e4790a404e93c94acb575cc167619009e2a030fc96b2ae17acf1652. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/DEZC62200583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd35ebb3573404fc87ad0e166c72f5dc4e22bb1bc7341039e5dc7c5cb885b3039. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/DEZC62200584.