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 0x5b64935ef8391a961d6837d0d8e8f5926d956b994e1335c34a5dd3525726eca5. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c1121882-61b6-44d9-823f-8a6f7886c151.json and https://artists.proofprofile.net/proofs/artist/c1121882-61b6-44d9-823f-8a6f7886c151.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 0xb7ab3fec0bac36c21d565be4a49d0f62aec73aca969765480d51e2824331bb56. 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/DEN962436901.
Turangalîla-Symphonie: II. Chant d'amour 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c5eab8b3f903d32bd58cce8cc60305088f375fba31baf627b3a89600390103e. 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/DEN962436902.
Turangalîla-Symphonie: III. Turangalîla 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e0db3ab69d4d2567806c3c7225cd425ec3a7cad9fc42ead3e3ecb0b3cfdf329. 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/DEN962436903.
Turangalîla-Symphonie: IV. Chant d'amour 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f887c50090c553036b6d532302fd2e4929f15f0a4d636c3cce8a2261620278d. 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/DEN962436904.
Turangalîla-Symphonie: V. Joie du sang des étoiles
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7191d6d38820b6a872b461f3540ae2eecc322b4c6dfa83bafb21949acc54739. 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/DEN962436905.
Turangalîla-Symphonie: VI. Jardin du sommeil d'amour
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dd09d109a7b1a7e82f9790e2c85c072a0639e871871b47c45eba89a40fca915. 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/DEN962436906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x371535a2d4733d24e660bf11e711a04a28a1a1330b5e6d51701deea0477b4a9f. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/DEN962436910.
Turangalîla-Symphonie: VII. Turangalîla 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c2134a037e6695023a0fd14a0d69a8ba48212275beb8507d10c4bcf005e9492. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T19:10:00Z), 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/DEN962436907.
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
Turangalîla-Symphonie: VIII. Développement de l'amour
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x701e8370d949c94a7418cb114f8ac267813c16c54e52add8a540a64a8d7aebcf. 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/DEN962436908.
Turangalîla-Symphonie: IX. Turangalîla 3
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbeb26dfc71a968b1cfc2620c39f12ef0cd30bec81bec33e5c1d4241a59bf322. Chain 2 (Bitcoin): anchored in block 960125 (2026-07-29T15:38:18Z), 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/DEN962436909.