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 0x9c6590ccfce2b89418943fe8a92c6961e70ca4d22674db204d36abd2c4562eb7. 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/6fd60c97-66a3-49a9-96bb-4bafeff61dc6.json and https://artists.proofprofile.net/proofs/artist/6fd60c97-66a3-49a9-96bb-4bafeff61dc6.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 0xe9e814f28269458c9a7426fa3972fb2e8ba90578bca034120b115b6dbc33aa7c. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZVEM2312821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaf1bc5cb6eaad91d510d4c83670fdb10f2c4cb0872103570d607fc7efa715cd. 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/QZVEM2324817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf215e3a47fa4aedd736831e9d78da1be2a748f2137ee2028e00767c9f8159ac7. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZVEM2322328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x341d4276251fbb1ff7707409316677176ff955b678279467a156b0b60ae15bd2. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZVEM2312818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46cf2c84174712e77e2599c3e2c19b5c599be3a292b9deed94b358ad28166c68. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZVEM2368485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf57a658f02f110645b0e064a751e2d4b6cc32e80a13af1ee89a8a9eb8491ee0f. 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/QZVEM2368486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4df8ccde959809b3e3c9d1ece99c731dcf0c84a35de64bec68902977e54fcae8. 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/QZVEM2322329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2f695563461b5af3acfa0511695c9b8c220a0daeb4bb72c6bda179efdd73847. 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/QZVEM2312817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95a17608867cc11333177b4d4b7e5be42d35592987c43888a4687aab7ed02471. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZFZ42053162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf215e3a47fa4aedd736831e9d78da1be2a748f2137ee2028e00767c9f8159ac7. 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/QZVEM2322328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e530e371b54a11d517b9a383ffa9676f719ec3fe31c6e4c6f09148e917338de. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QM2PV1862874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72917273cc35d92639e98e304fc59ec7f28a2cdae60176dacca34e6cae1eadd4. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZDA81826724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fc61de31f34835d3b595d4a93104e803ad44928ef069fc7593bf3ed3622eed5. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZFZ31993722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff80943030c42f1bb0a506cb0000d2c0d88a2601a0c3a31dcdf13ff007615165. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZFZ31977413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc46828063ae33cd76ce70bda3817cece443570549cd0a6c85542294f03e84d8b. 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/QZFZ31993723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x847ea9bcd0dcc109d8633253a6ef91714577fa9f1e9e88e5682e3bfb65f44118. 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/QZFZ31993724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x431f7d22a76d2de9720caefbe5d33402be77d4be792d8463163fb091ede6a015. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZFZ31993725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3feb39830e7b355ecc098844caf139a114c9a350fa5c756913bee4cf445cf31. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZFZ31993726.