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 0x222487fb261eb2b6486f290601a5928fe61d02bbb5f3fbd4eaa926ddedc0f078. Chain 2 (Bitcoin): anchored in block 953997 (2026-06-16T20:07:57Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1ff9fea2-45d4-4dc5-b4d2-17b89d73c6bd.json and https://artists.proofprofile.net/proofs/artist/1ff9fea2-45d4-4dc5-b4d2-17b89d73c6bd.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Gérard Pierron chante Gaston Couté (Rétrospective 1977-2008)
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 0xb5049b41105cadf00581193785eaa920bc4b64fca380db24eece71f4f857d028. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/FRX191601748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x544de68387d3fd3a4dd2491e7f9db1ec1440959a9c8a4a2c75dfd511e6136a43. 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/FRX191601732.
Anthologie De La Chanson Française - L'histoire En Chansons
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7eb7a35953d7c8e8e5116ce127f1571ed30a161ab0a0a0f0fd4f094da7fecad. 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/FR6V89400521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb14b1ba1ef51cff83939c8b3791fc23087242f75f4d431a771903fadd8c9698. 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/FR6V89400522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf723ba88f0c7c96770413c04c72a005d3fb5db74524add11cba95ef80aae22a. 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/FR6V89400523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4e077c3e5e8b374bb94e0aa4d88eaadbd54e345e7943ae5940712acd99dbb64. 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/FR6V89400525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9452895b8135ad52564c7ec96eaec9e28345998914f53154bf4d669d02380282. 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/FR6V89400527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3cacc87a076fa27d562c902e22b35b392eed4b3416bed0608c5a4e72a3d4331. Chain 2 (Bitcoin): anchored in block 960487 (2026-08-01T00:15:43Z), 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/FR6V89400528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a80d2ef79e0373f481a8f96145c2ba6450d9d745fa3208bc0d46cf9826e7df6. 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/FR6V89400529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6318c433f16a4e37d31d5ed4523bc0834bd6339e496f2b5d7bcd3497717290f2. 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/FR6V89400531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5cb0246ac15412c3c136884e1e6baf9e999d15504b40a3999fc8ebce353ae6a. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/FR6V89400532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24418a70f0a01c0617af6dbae6e90e9b471316eab2fbc91653a5f72559832018. 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/FR6V89400534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1c733c4bcd53ab65303eb4dc0be2009d0b2458bd1a451f4753ce263547780db. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/FR6V89400536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf47b8efee379ac8cdf54220598230606290ecfc86df55713ffdb7977674ed706. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/FR6V89400543.
Chansons de Marins - Chants Traditionnels Bretons
Gaston Couté – Jour de lessive (Nos Enchanteur le quotidien de la chanson)
VICTOR HUGO : Je respire où tu palpites (Nos Enchanteurs - Le quotidien de la chanson)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48466abf3b715898365cdfbe4bd57ec072eeb48ccb522fa559c0168ae503172e. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/FR5P50900990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb66c24aaec15d090585c97235ce203962278e5d9a2d8d5bc2edcb40654b678f4. 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/FR5P50901000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc46bd1eb06429b859e909e60ddddcd9e6f64da71d0448cea335f15af10053e4b. 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/FR5P50901010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce905b664e0b00c3ca911bd1072fde43c8f16a0b0db15b6cb43d60d161bb8e3e. 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/FR5P50901050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6b6929c49ad47bbe610d5c9d09afa371b51cf06cd48814cf0de88a5d5a0ecce. Chain 2 (Bitcoin): anchored in block 960355 (2026-07-31T05:49:18Z), 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/FR5P50901080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d2cbff7ab7ad32f9dae7f47c923c5ae180934f636d54aeaaed71a2e6c4e533d. 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/FR5P50901090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x067ff0675d84049d18a43c6b5df17a169d37f332a0403002392585f14cd55048. 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/FRX198825575.
Trésors perdus (Rétrospective 1981-2013)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9d2709615327aa1d54f66decfb406c500aa8bb1709b1055b1a6e98c3228d6c3. 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/FR6V87900151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f5b85c2be0cc56b700dd80e380d4d165882313c649b998d81fe8bd259e170b8. 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/FR6V87900152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb2628245155719bd63d41a1c77c0c4af3fa18d2efaf9f82a40374099244e0bf. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/FR6V87900154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaab441aa8c17d37e89a69128f35ba524406ad2da5633f8dfc691dcbe4d056b71. 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/FR6V87900155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44f2287dce2679e849cb532bf8232c44559042b7d0ae83aed888b5c39df63755. 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/FR6V87900157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3c14281056dbb40f14042ebcdac1ae0fdf2949faabd4a56315ecb89b6eaca60. 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/FR6V87900159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7be82212d80de305745d22b21872353f41ee79b9b9cf76f2898619f02ad2d173. 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/FR6V87900165.
Anthologie De La Chanson Française - Chansons De Marins
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e40994b1ba591ae5e17859f9166bbc8363e174287f8a728d872094d8a5d3637. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/FR6V89400411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea34ed38d98dc5e992c81bff8fec6bb16c367ef9ab741095580d01a471f05162. Chain 2 (Bitcoin): anchored in block 960419 (2026-07-31T15:20:33Z), 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/FR6V89400412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb04bc007f105ff2a8a5009a836ece8a06d6d5ae086a69b61dd82c53f5e75f25c. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/FR6V89400414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5ec442f57d17cd3b2ad93f6cb2d18da968d83e02386e4db5aac98cec6d8bfd3. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/FR6V89400416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9479968dea833fcaf37cd1516d3e36c7ce8bb91100473f50d814e97dbe2d5f4e. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/FR6V89400422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc64fc39df485d729b2d5002ad31e936865da4153d52c94429679d6f73682263. 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/FR6V89400427.
Victor Hugo [Je respire où tu palpites (Collection Nos Enchanteurs)]