Luc Ferrari (5 February 1929 – 22 August 2005) was a French composer of Italian heritage and a pioneer in musique concrète and electroacoustic music. He was a founding member of RTF's Groupe de Recher
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 0xb1261c3ed472c4fafe5c5f2ceb268a54027aa1116d7e04c33067b45d62ad4162. Chain 2 (Bitcoin): anchored in block 953803 (2026-06-15T15:41:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e8df24c4-d2aa-4c15-ae00-78d2a34ca52d.json and https://artists.proofprofile.net/proofs/artist/e8df24c4-d2aa-4c15-ae00-78d2a34ca52d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Et tournent les sons dans la garrigue (Live in Studio)
Musique? – Modern and Electro-Acoustic Works for Harpsichord
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 0x3b0f34ba8caf53718408d6298c18703207a490c7cb1fec488607f72fd68ae3fd. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/GBAJY2028701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96a555833c072123bb9494674c4b024a62450c4131ee6abd147a3e6ddac9bed6. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/GBAJY2028702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafe94d5229ac074786dfd760d148b57c491bcbfcb552a9488e028957a0328771. 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/FR9W15800142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeef7d88e26ba84a4d50c72c060c4b9d7ebdb88f1e19cc5d09f07ccac93fea3c0. Chain 2 (Bitcoin): anchored in block 960193 (2026-07-30T02:05:19Z), 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/FR9W12025607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x137149506cd5b3cd8cf4a161476f6f2b1f5d15d48a7cae41b5ea5017ea0d7f52. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/ATE691902201.
Presque rien n°1, le lever du jour au bord de la mer
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x092aa398aaf0ef65b7e2e81e842ecdb9d54227382d0c44c79fcff6f8881e7853. 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/ATE691500501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x235acf03dbec42bd6ef5cd5e441ec45a862544103728ed6fbff724b645441e6f. 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/FR6V81497546.
Ferrari: Und so weiter & Music Promenade
Ferrari: Madame de Shanghai, Après presque rien & Visage 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57fb8a97e5f424a2eafff02abb3f249c8cd045bb9757f84f92b5853a8a27fff1. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/DEBL60946813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x690a414397ac135f4dffa0c8550fc44d58e257b497020a978c012295efbf5ef1. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/FR6V80709212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33343a78bb56193e9cfb7391d367d972d121ac667a656e083a6443ff41af3b26. 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/FR6V80709213.
Far-West News (1998-99) Episodes 2 and 3
Acousmatrix - The History of Electronic Music III
Petite Symphoie Intuitive Our Un Paysage De Printemps
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb00d51d994d25a0de0f15c8bb406d7805cf00fd7c53f075bba1aebdae37111c. 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/NLA420400060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21ed353b11ed2234460824891f894613723170e3f349febd552032cda8ff6d93. 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/NLA420400061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58d08f418569b36adeddc0e373d5e3bce71773b0e989f28602fe09ea76019e9a. 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/NLA420400062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7e7aa463d1f5b19aca3ebdcf09e194927b8b6b4ed89f76581f03acf6824aa2d. Chain 2 (Bitcoin): anchored in block 960167 (2026-07-29T23:42:34Z), 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/NLA420400063.
Cycle des Souvenirs (1995-2000): Exploitation des Concepts no. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf119d06e0f5887d7027ba5580d8f8a36b8b67ab96a66f29ce2a4bc522c98f172. 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/QM4WV0207301.
Ferrari: Chansons pour le corps & Et si tout entiére maintenant
Fragments d'un journal intime: VII. Ce mystérieux moment
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb10ea7bafa098d81c2bf60cff082cd7e772bdb0b999bffbba20603bf445b6a7. Chain 2 (Bitcoin): anchored in block 960503 (2026-08-01T03:41:24Z), 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/FR10S1700754.
Presque Rien No. 1 (Lever du Jour au Bord de la Mer)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf015a1bfb10de32cc3fd4688cc4f4856437b265207da8a1c0a8a3bcb80ad8214. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/DEF057002780.
Ensemble Instrumental de Musique Contemporaine de Paris
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcedb73717bead89f170b94511d00682722ec16e69554d524c27c87eac2df98b9. 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/DEF056904281.
An Anthology Of Noise And Electronic Music Vol.2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc78ff2a3e27fdfbb22e671d94b1dcdf8faacc7e2ee4ba46c5288a09d32d6b274. 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/FR6V85800015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61cd070c0d68af4a91ef4a8c4086fdce504bf0409e3d337d30b3299588e477bc. 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/NLG620434864.