Pierre Barouh (born Élie Pierre Barouh; 19 February 1934 – 28 December 2016) was a French writer-composer-singer best known for his work on Claude Lelouch's film A Man and a Woman as an actor and the
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 0x63b90fc5b74f22abc9c17095564f9bb14f4f2e850d5db84727883306a02e078e. 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/b6411b8f-f4bb-48db-8214-17a47d216320.json and https://artists.proofprofile.net/proofs/artist/b6411b8f-f4bb-48db-8214-17a47d216320.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 0x045515c83a11bb0ff02bd5d0e26c0c75d4f05b26d4375fb848991eeaa2bcf63d. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/FR77F8300060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c3f382c20a11c07447179e45f395523a77bcd2a17ece5272338958217168f19. Chain 2 (Bitcoin): anchored in block 958558 (2026-07-18T13:44:16Z), 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/FR77F7200250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7aa8f3a0c893e815143664635fa984f5579ee1ab3f82b6b2f37471e17604a3f3. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T15:07:00Z), 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/FR77F7200290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe77c862c4582df353888fd944d26a312da9f4bd0dd49b7a42aabf3340385839c. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/FR77F7700660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x196477745578c74b7c72a70494b8df488485d89955dd7e5c2894f99c6974de50. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T05:02:52Z), 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/FR77F8300630.
Itchi Go, Itchi E (Une rencontre, une occasion)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x918711cb84d1045d73c4cb74bf59b48f1af132ee7b394436f17d0a4284cf1d46. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/FR77F9800010.
60 ans de chansons à des titres Divers (parfois Dit Vert) sur l'humain et ce qui l'entoure
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eb1e6dc7fbd711ba998b9a1b2902dc16eb9fa1769d3472fbb1b3aea50a52628. 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/FRP366600090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f2d69c286e67c012137d735a60252b7663caa84acb2123421cb90981790c3d3. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/FR6V86500011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa32ddb8aa6107f72f7f1986acec6fff0568ac20b26ee4be57f2b60f27189b855. 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/FR77F6800540.
France 70 (Folk, Rock & Electronic Rare Gems from the 70's)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22c7ad972ffbf224a1e9d0eda9bba217e38eb390259bcf27e9622f859e3a2b81. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/FR77F7200270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6b918c9fe3b2e215ad4574915cf4f52295b7d05b01a8acb05bd63f3b234b557. 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/FRPD81711120.
Les rois du Slow-Biz / 30 ans de Saravah
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5be023dbd61081d62939fc49100f1e8f073a666231d2867f4ce26398938ec2e9. 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/FR77F7000900.
Dominique Cravic et Les Primitifs Du Futur
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f8bf231cc93ed8d79997c45780a170e323c5c4c37aed6f9b79997046433f8fb. 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/FRUM70701883.