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 0x7e9cb6a346a9c52b7c5389b162f0f58042c820f52665926c3550d92e3e9141a3. Chain 2 (Bitcoin): anchored in block 954516 (2026-06-20T07:04:44Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a22f6514-5723-4fae-808e-6fdc96c69c14.json and https://artists.proofprofile.net/proofs/artist/a22f6514-5723-4fae-808e-6fdc96c69c14.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Bob l'éponge (Générique) - orchestre de cordes
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 0x611cfde0cc92f9e92d81d35e7c64066da0a3a2642ccab522adaf53a8cc6353f8. 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/DETL61406061.
Chansons D'Enfants Sur La Harpe (Versions Harpe)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd36316c3fd38f9df6a9a14fdb56bc328246cc77ed524e09c06d9df0d7541bb7a. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/DETL61401200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a58068ab93ade1dc9b75bd67329e5da68aa5a495e0e3e343cc1f7eb18f38200. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DETL61401186.
Dora l'exploratrice (Générique) - Boîte à musique
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1ebaaf82468d016276897da77103c52a47eff46be63f4e11e3d9943f06d8c28. 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/DETL61411521.
Sam le pompier (Générique) - Boîte à musique
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec4245f4b820c95d8c878bfe0112cc72ea48d49b4f66b8480164dcbee3b5896e. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/DETL61411534.
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
Mes parrains sont magiques (thème) - orchestre funky
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddf2cb0022ad4c755a4a18affec2f4e2f158cc8dddbcc6f373dba3aa66540a23. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DETL61407062.
Fraggle Rock (Générique) - orchestre funky
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b8fefb4354d8637f7b119f95b5fdabeb7289e2c85cca51c87a2bf0c6c11b485. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/DETL61407055.
Chansons D'Enfants Sur La Harpe (Version Harpe)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe49b03663274718335ebbb633ecc2b01a09a976585cc67c57d164e46bca30db0. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DETL61401775.