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 0x37665897a55d4f2ac6c8e6593bb882e2c0fb4093ed538e1e1bcb832f918777b2. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2b419aec-be8a-4a8d-b9e0-3ddd4efddadb.json and https://artists.proofprofile.net/proofs/artist/2b419aec-be8a-4a8d-b9e0-3ddd4efddadb.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
L'intégrale (Le duo culte des années 70 en 78 titres)
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 0x928e723ba37a74e6417f93912a6b710f3488fe68acf1abc46f575c1875704e39. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/FR3F71200130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x257b1c57f898bcb513803c901cb790098befedd4a427e1514a336e254178c6db. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FR3F71200330.
L'amour c'est la musique de la vie, Pt. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41ed1322db9eb7b15a6396d3efaa7e355c0505eb59d1c5f0a20335cb143ce0b7. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/FR3F71200140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfeda8944a3004b8e49e9c91fe079876982f6420e558017c4705ac3788838782c. Chain 2 (Bitcoin): anchored in block 960153 (2026-07-29T21:57:12Z), 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/FR3F71200340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde45f6815eedce21997aeea9c4e7ad8707c8f06623811ec5a3e6a365a8463a2b. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/FR3F71200150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1138388de0a71a109d1825b80efb0e4d940cd87c1a8d713f1bebeb440b89498a. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FR3F71200160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf7d160e7e87d599e10c2b09ee330bdcc874ad3f22aca870d3d53630c6da47f0. 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/FR3F71200170.
Je t'aime un peu trop - Version allemande
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c8723e7b43fb0b5c6b67a2122f104a1a015feff4d16a4ff55c0c4df73831258. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/FR3F71200370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0f2d7dc8f79f9e2bc23c995f87d64a35c1a483e549ee4cbea9b56f7160dd674. 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/FR3F71200180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00de305261416a8782e66cc764741e0256958067f4c4163bb89260f1a7a28412. 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/FR3F71200190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x704a3a05987d02c0049b3e796125768bd799fd2f05642600611e7b1eff816c8d. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FR3F71200390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b0531621c70846f9eeb4199f54fb54ab31603f62933072ff71189508c46ef1d. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/FR3F71200200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3489228744a9e237a71a200657c4f0935944aa1d9a26ddb41e5f5e284aa4d3d. 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/FR3F71200210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf021946f4e6647f4ca44048ea67a1ef1592d536e5da4fe0b16896a194bbc5778. 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/FR3F71200220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x444c87c4de123aaeee06c20af9bfc8367c559c6e1fa00daf122656028fda662b. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/FR3F71200230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x307fd432b723541dbe4417f9039f992d6e82bc987bcdc140d96d0567535a98aa. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/FR3F71200240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94ca9c4025d31ca782863b1933156315c886b6eb843ccd34c7a25a285a33302f. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/FR3F71200250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8a414f48763be4fa53b6b6e4056d417d62d340f87ca919077b4cbb145adc4f6. 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/FR3F71200450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f1f16332578d7774f701ba170d10a635bd1357309a197e1b2b8c14cc2fbd1d8. 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/FR3F71200260.
L'amour c'est la musique de la vie, Pt. 3
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4feaab1b27cacd4b90d6f721e027b16adfbfcce4f6b9ae0b641055f6190f0fa0. Chain 2 (Bitcoin): anchored in block 960485 (2026-08-01T00:10:46Z), 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/FR3F71200460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf95513e8fab17d108a62df4dbf428c07cab94d7731306e541314d49a14e1a8e6. 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/FR3F71200270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6aadbd33f19c4f0670633f66e4725b4c211368c3d6ae0be6a2b2c5a01ebcc639. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FR3F71200290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb2f2fb98cf4e813ea3a3ef446936bb7a8ebb0bbfb472681ad4435c14f2be4c9. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/FR3F71200300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b2a2c02fec0c3765feb8012c44e7aac0dacf92b91bc007e0d2523300f64ef42. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FR3F71200310.