1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xa43ecfa3dcdfdfc3e9358ee48536ffb1e3cb41775e31c4b2c04e87991c97d6ae. Chain 2 (Bitcoin): anchored in block 954705 (2026-06-21T13:42:37Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f11bf9ef-9432-43de-ad7f-122440064420.json and https://artists.proofprofile.net/proofs/artist/f11bf9ef-9432-43de-ad7f-122440064420.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Autoportrait avec Ohana et Albeniz - Merci Ligeti
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 → block OTSBitcoinBlock must exist at that height 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 0xd1872e5ff7237e8f6de930ac9564caceff971658969033d6b63f62e33f296600. 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/FR4EO2300077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bc8a5076106f45f34314c58c7b4450281567d0bedf4d946c48d66bcb0ff5767. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FR4EO2300078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbec9ceae2b9eff7dc87db6125297b74d238de521e529e333c29c2e05d707af25. 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/FR4EO2300080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0e65492dbdafc7d065f2f9247278b927c74179f16a74adc6bfd982dc78a6762. 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/FR4EO2400089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e20ea4a735becc83c78c77a92be02da22541b6e82223a244289ac9abc26c859. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/FR4EO2400086.
À travers les orages - Initials AZ Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ab95e287ef1830199fe0a1b03e1edbe8131d4fe42a24877806bd8ca8603ad31. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/FR4EO2400087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82db2bc878ee7896b64e502fbc2e0979b55196082a14c7ee169d7ce291f26b32. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/FR4EO2400085.
À travers les orages - Davide Famularo Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cda8aa45fd33b3a251529ebcb612dc50020886f0ef3a299139402c4525feb16. 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/FR4EO2400088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4ed31836dbf23e07b6bab8c383acca17eaae5988c4a7a842208cd8301a45347. 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/FR4EO2400065.
Trainworld, sonographies de Bruno Letort pour la scénographie de François Schuiten