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 0x478c701a4bdfbd8794733eead8ef82aef82a11d30f5c2639d6e559ad015eba1f. 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/94106f77-5a03-4544-a59d-6c041f46a547.json and https://artists.proofprofile.net/proofs/artist/94106f77-5a03-4544-a59d-6c041f46a547.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 0x8db42be33bfd46486aed8ba93f803c3659148418a0ecafb3ab60ab103b6601e5. 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/INH512016999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7857beb9e9b988f1109bc0e912cee97a83bf5daa975903ec25d3b1a07f5ce22. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/FR2X42477130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fa4bbeee0b3992fc83f452d507d5bb3cf4addd18a6891d269c74b0a685f093a. 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/INS181401382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3777836e04d8d086a3f03d2f70fff31d8bb8acd5052cc64470d98102c994aa23. 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/INS181401646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57d04ded4de13742665834071b7535096484d0d194389c7573102fa02eed3f10. 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/INS182300968.
Kabhi Jo Badal Barse-Dil De Diya Hai (From "T-Series Mixtape Season 2")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dcaa3a9644c9a5891fc7ffde97dd6bb3f7d46ae96c5306646b0a8fe3dd727f0. 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/INS181901035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42f91b56c917a16c763778ddcd3b8370ec62890304fbeff04f5809943ea25a28. 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/INS182300970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81ee2b6866c47a81883cfe1f7fd2e2b9890a3fa1928edcb1a2799bc148bdb46f. 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/INS182300972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d9ed2094b2ad492fd47872e00d33a9cd98dd08a9f62df14485076a0777c95f7. 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/INS181401384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f6d7895096fcdf1eeec1a7419038d0b11ad4d7845964a270e0a661b10e858ba. 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/INS182300969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bfef286b79a82c353a136693f0c6d3c5112aec69a8700cee785c7d904393979. 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/INS181101313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21dcd036414f4fb4cdce94ba1bcae5e3b37fa7d2f71acfdfe208dbe23d632e2c. 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/INS181006581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7671342c400df9ceafe55974f7a41128817da0f02c978674fc4cf9dba8abddb9. 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/INS181006585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8673cad5faa100d44b5e96f5a85fc06f9308311c8129827e9429fde6ecc2edd. 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/INS182401867.
83 - Tamil (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f4edaa5ac0467c7a5a5cd7fe439593d5cadc1a28e16e5d8f1c32a2765556d5a. 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/INZ031410075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a51f5c8f6721290b5b55b4ea4ede43a4372c7bdb9ae1b95dc6f006e18c8b54a. 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/INZ031410685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x314ffcf89c14b24cb333f2bead3fd51fca429ca002d6d6266118e5c4441ec782. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/INZ031410688.
83 - Malayalam (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71dbc5380f3b77e83b960c19b97e6e26932ce688a41df81db1959bae49d451b7. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/INZ031410074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38718c29ef025ad64ebaf91051d5ad0e7400d06bdb915d7e858c4206d61b781d. Chain 2 (Bitcoin): anchored in block 960429 (2026-07-31T16:07:24Z), 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/INZ031410674.