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 0xf32a556fede8c6240b22e47860149b848b90529b9916d1d808fb9dab2e7099df. Chain 2 (Bitcoin): anchored in block 953626 (2026-06-14T11:41:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/22fbaf32-d0ec-48cb-8ffb-0671a5927c05.json and https://artists.proofprofile.net/proofs/artist/22fbaf32-d0ec-48cb-8ffb-0671a5927c05.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 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 0xbc24ea1a98d88a63de389bf39b97b5dd4ae05addcbf5944dba901b63673f1a0c. 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/FR10X1100302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dc4bba61b61004c3fbb733f670eebaa73da2d303e4747eaa2d9d9a635931b3b. 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/FR10X1100304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91f0c38eaf4f155d782fe3169ef1e8b2e47ffe6df2c5fb0e72011edf2cf1e264. 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/FR10X1100306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf072e627753b4ccd0f0b63aed93b1a6ed2e963a8d62fefb58d0462e6765048e7. 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/FR10X1100310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f4ac31e35969a17f907b0813f09f89b82f8f793b3ee0a290947eef62caaf5c6. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ES7181003601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3e46c0a190849be5c0717689ad0144276ff34ebe3767e941080279a7d7607dc. 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/ES7181003602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd16fe5964eb0d3ed4ea6633bb237f39af06bda014bf04c8f80ea1f69b5989ef5. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ES7181003608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0c815ae6651ab06ecf8596ef28cdf8eae76f17cc809b8139152de1f4293bcf8. 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/DKABA0800019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42b48712d31d9635aa1398eacc1f4fcb88c58f193c5a7773e1cafbe680048460. 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/DKABA0800020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25c4c6e30bed41a5b27782305777050ecd57c5b8044059f60e1cbc0eed9e66a7. 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/FR10X1800401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89bd1894cfcb866d0e2d9763d226e0dd5b15421b8e62bfff496d8c263d470e55. 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/FR10X1800402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7576bb27a6ba5678e549e961f1621d8d4558d610d574bf0a76b96209dce33caa. 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/FR10X1800404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8725a3ea17c35c0ce5fb41044f2dce8a3d782f09134a909c7f430e3e84fd8a4d. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/FR10X1800407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf27ab2288d05ffbf1e5a00a88f0cd73d220488a7900b100d2173bcdb2abccbf. 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/FR10X0400203.
Tout s'accélère (Bande originale du film de Gilles Vernet)
Emmène-moi là-haut (with Richard Bona & Marc Berthoumieux)