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 0x1d2fe9618c53c82def4900dd7e435a33de5140369507d12c03b59b8d86805ebb. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ede0e2d2-b414-481d-8a34-fd90e704c1bb.json and https://artists.proofprofile.net/proofs/artist/ede0e2d2-b414-481d-8a34-fd90e704c1bb.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 0x6d215ea818adadc833ac60b5c3bccee76108a8d0d5bb3e18ca901bf89f4db4b5. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/FR9W11921014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8620e5e6ad615c62953dac1fd3fa0b32fc7889ae16e8c7a57b14fd2306cdef33. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/FR9W11921013.
Le chant des étoiles (Bande originale du film ‘Dreams')
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda40427a94b607186284693637a83a1c16b27558fa85261d7bf95786fc751034. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T15:46:19Z), 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/FR9W12100800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c21d0d0602d8d24b7efe8402648f9bd2f0084b6767b1af050d751cb7c593015. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/FR9W12100801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1001c0feeebd49733223b844d6f5d09b2877b7c9bebf118a953ff3625868c61f. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/FR9W12100807.
Le café des 3 colombes - À toi, Joe Dassin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dfeaf0266403af4d4b820df28c9b5c133f25a43c60e57886e5a53f7c1b55ebb. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/FRZ052000433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb3fdd5ff825c0d9c3ee212d1874bf31249029ed45168892b859dff45652cc16. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/FR8PV2301270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dfeaf0266403af4d4b820df28c9b5c133f25a43c60e57886e5a53f7c1b55ebb. 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/FRZ052000433.
Tu seras la dernière (feat. Lola Dubini)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe82fe5805e8bd1bad3e19a4d848269b98b792c790999735eeabf758a203852a9. 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/FR9W12025060.