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 0xd6f4bab820145e8de5091e3883ad08b88a853da0a7a4da249eb24d0f8c253aed. Chain 2 (Bitcoin): anchored in block 953691 (2026-06-14T20:39:17Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6af380c7-c200-4e3a-bf43-82f6e270abd7.json and https://artists.proofprofile.net/proofs/artist/6af380c7-c200-4e3a-bf43-82f6e270abd7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Les combattants (Bande originale du film)
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 0x1956ac31ce868137db05e86a5b95ec67d5459071a0645903de8ede4bdbe6ca28. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/FR58V1400011.
La nouvelle vie de Paul Sneijder (Bande originale du film)
Belle et Sébastien (Bande originale de la série animée)
Ad Vitam (Original Soundtrack from the TV Series)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10eae468012544d2dd5f97d43cd19935f7ff573326b22e0ce24caf7efcbf02dd. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/FR00V1800017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2e3dbe84d9b2b08e4e4c13d64dc2e45d23ed6ef92c990fa10e95c9ce0c8562b. 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/FR00V1800018.
Les bracelets rouges (Bande originale de la série télévisée)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5f6a021d4e218d5d411f32c3711fb36275f1d1d241ae0221f3051e49003eb8d. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/FR1F91900010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe83de63471a177c71da9982bbaceb24312612819a9adf01d5eddd448a10c2137. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T19:17:28Z), 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/FR1F91900030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb1243e11d33d5bc0e9cbf664ebcde5213021aa54eba7fb6a3d6dc2d3646d68e. 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/FR1F91900090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47acc3324feeef2e3c1a47ea676bea76afd20cc278e83d4502a41e1a74f55509. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/FR1F91900140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb504b9192fbf17fb63b2bde555482f83679b172e599710822455511de12765fc. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/FR1F91900150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31b758c58e8ea2a08acee54f42afcdbb25ab09fa11c953060dd3819d50048e96. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/FR1F91900160.
POSSESSIONS (Original Soundtrack from the TV Series)
Les bracelets rouges, nouvelle génération (Bande originale de la série télévisée)