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 0xb85c9f59bf680fd831053fbbdda78dedd697f222445c7d392633416f21a61cad. 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/c77549b6-4407-4434-b942-f97cf0e296c9.json and https://artists.proofprofile.net/proofs/artist/c77549b6-4407-4434-b942-f97cf0e296c9.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 0xae815e8a15974cf577578f5be4bc2f980f058221c2175c01eb9240c5f76f9f56. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FR9W11517210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf362a285d0e8f31dc90efaac663932ef7e495463f970a7c1e249029ab26ac898. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T18:30:28Z), 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/FR9W11517348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x066981dfa1286cca029a61738de0fd2ca5f58b5ee88ed207373cd8599d8d651c. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:37:05Z), 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/FR9W11517338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71e4c5dc5fa7379dfb45b310d92e5648511fb6f9d70afc54a472e75d20325b71. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/FR9W11517212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x649027e651caf717fda5bbab3a5aa15c508ee2891c67034ab189aa2e5433257a. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/FR9W11517345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2acd368be320c78b4e8b8aedb36c926ffbfa169ecebfd4ee865db7f1ea97b7a. 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/FR9W11517220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1885ba3d96a4e31cddce5b6b8413f28bc2ff70d11638799508fc1db517888e27. Chain 2 (Bitcoin): anchored in block 958417 (2026-07-17T12:56:50Z), 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/FR9W11517203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd2dbd590133d6ff31017745046b8ee6a93966dc3535d982bdf452c3ecb2d999. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T19:01:48Z), 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/FR9W11517216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c144d650c4a4c0df9b4ef1f229826e305407f6eccc6d81462d76d12989f1f90. 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/FR9W11517343.
Chababi Project (Musique inspirée de la série TV)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71a5f98cdca52971597fb154f36bfee2512689cf47bb80a490d91d7308263bdb. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/QZTAT2201828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe03463457e194667c62d6290a59ed8928f338086eab70de7485e78cd32b19af9. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DEZC62431490.