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 0x637c34acf252698afc6ec776b392f1d625c8289b9decf04ade2db0c8b36c22ba. Chain 2 (Bitcoin): anchored in block 953727 (2026-06-15T02:33:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9068f438-4ad7-44d9-a8e4-0db1810e4174.json and https://artists.proofprofile.net/proofs/artist/9068f438-4ad7-44d9-a8e4-0db1810e4174.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Pascal Sévajols Plays Ballet Class II - Vaganova Grade 7th
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Battements Tendus (Face á la Barre) - 4/4 - 16x8
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 0x88c5e6ad553bbff947eb90f30d104eac9e92a9773f433a632bfe1250fa70aa0d. 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/DELJ81768809.
Battements Tendus #1 - Slow - 2/4 - 16x8
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdb8bdfe920e11c8c7e529dc39a02fc822ae7f3360d8f9e9e79c105458af9818. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T13:10:36Z), 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/DELJ81768811.
Pascal Sévajols Plays Ballett Class - Advanced
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8492f7fd294d62b37e502b4f43d6f48aa245bf9af596f5a93f364b2d602db645. 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/DELJ81764915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x789a23ef86945a35930c8e945c594da090bc20fde469d1156e322e29bdd99397. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/DELJ81764918.
Rond de jambe à terre + Port de bras 4/4
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ae2b1d4df4c17329197eea57c5e1179506d04045e901dee34435d7fa5739bf4. Chain 2 (Bitcoin): anchored in block 958817 (2026-07-20T03:52:09Z), 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/DELJ81764920.
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