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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c076038813826ceed2d19c266d75e6aa1d4a2c399a20a90d28e56f455dae4ae. Chain 2 (Bitcoin): anchored in block 953596 (2026-06-14T06:21:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0a0f25f2-d249-45dc-877d-779e844a0c68.json and https://artists.proofprofile.net/proofs/artist/0a0f25f2-d249-45dc-877d-779e844a0c68.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4ad2687da55b92ac5b172e0b9e75a1b7a42707a9d82408171c7e2ad0ddf7dfc. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/INS180259597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7555528b3598e26d11ea77042b1e70ecc2da706f15b1ce47b2b72fecc6eafc4. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/INS180259728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb450a0199bd28cf009fed721355b5911102aa03c4b255c040203ef1454fe6eb. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/INS180259729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89437f4f1903b452645d708b36d09cc0e46ff9b756e1b379facc11d15427e9d1. Chain 2 (Bitcoin): anchored in block 958197 (2026-07-15T20:40:29Z), 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/INS180259730.
Jogi Jati Brahmchariv And Panj Shashtar Parvaan
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4e61d1c2657b8804dc49d604b212bf772d18377721f7833e9d3e62415a1d5f6. 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/INS180805130.
Khuahi Kaare Nit Jao - Raag Maajh Mahalla - 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf4895cd4d3f081ed864c29f95852d4a52c7f4b4254c8b4898edc46ae17c477b. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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/INS180809834.
Aad Guray Namhe - Raag Gaudi Mahalla - 3
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07a6cea09f4bd45807bb0dfbfb8217e8dbfa0b4c76db4fe22615cf2d6cedcd9e. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T15:31:18Z), 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/INS180809835.
Mereh Jeeariya Pardesiya - Raag Aasa Mahalla - 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32b5889490c330656d1de046b23d9b8ebfd5fc8745873d93e3241bc199d81852. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/INS180809836.
Amrita Pria Bachan Tumhare - Raag Dev Gandhari Mahalla - 5
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c550f0dfcc42a6219fc6d925d5b5e198e4b266cc628fd8b6fc1f217282d9cb7. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/INS180809838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ea756c4672bc942a892b500915975a3000dd2f7e2782d6c1e5783eefddaa5b6. 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/INS181200745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x059df57b19d8910b7540f42f71ac943a9d24d57e346a5c4f2f734b725fc3ca3b. 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/INS181200747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbb28cab2c933121daacbc7b25cb45ee6bb721819625d420f30b470add814cdc. 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/INS181200748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cdbfced6443d042bb6a26aaa88afa149d7ffc4f58a7c06023e2842ae5457a42. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/INS181200749.