thumb|300px|Bruno Mantovani Bruno Mantovani (born 8 October 1974) is a French composer. He has been awarded first prizes from the Conservatoire de Paris which he joined in 1993. His work has been com
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 0xcde005688d6d53fae85e679e476473af2d39be9c51f06db4fd53bc7521ca9137. Chain 2 (Bitcoin): anchored in block 954693 (2026-06-21T11:50:32Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e9f4fa49-95a0-4ab2-82f9-09a432290cca.json and https://artists.proofprofile.net/proofs/artist/e9f4fa49-95a0-4ab2-82f9-09a432290cca.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
Widmann, J.: Lied / Rihm, W.: Erscheinung / Schnebel, D.: Schubert-Phantasie
Poétiques de l'instant II: Ravel & Mantovani
String Quartet in F Major, M. 35: I. Allegro moderato
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 0x581280379adaf485b9b88fe788d275f959d2027af61cec9b5835e6f3cd0d065f. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR50X2193301 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67e9f7643ad81b3f3d0a3ce27ee936b67f88528386755955de1af858c6341b58. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR50X2193311 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb42c741201058742e3a4b9d938be92b7de7d2d7f7560b67d7082080975500d4. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR9W11118276 — a six-check JSON result.
Mantovani: Concerto pour deux altos, Time Stretch & Finale
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7aa6da396c395cea02d8096416fb00b5b1a1a5f028302d457001e2e4d2ad9c18. Chain 2 (Bitcoin): anchored in block 960277 (2026-07-30T16:10:47Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FROV61906701 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fb9e2001a725d2e5b7870aa674191f1f40024bf88a61a85ce9ae899187bc030. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FROV61906702 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc44b68e1a598b440891261831ef25f53a4995b3cf26d6354e1ea82277a3652b7. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FROV61906703 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44ca877b3e421c0ef9e368154b38b5a88e016ebb1f1e190a64a2d9ae063f3ca2. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FROV61906704 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78583e6d575b8c475399c4fa89d00e6ffa44033ea112b7252f1808f1a8fb5dc6. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FROV61906706 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ee5c44e2c33a8b28178aaffc5fabd17facb580d4486023eb06ccf19a0eeb8d4. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FROV61906709 — a six-check JSON result.
Sept, les anges de Sinjar (Premier enregistrement mondial)
Temps qui passe 1, yézidi - Le pas fleurit de lumière
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80abcbb8e8ec18714c785e6d4a78ac288fcd745b2f6a89eea58eace09e715986. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR1A92104718 — a six-check JSON result.
L'ange Dardaïl (lundi) - "L'alphabet tempéré" pour violoncelle
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e0715ffb758cbf333cee63dceff49932093cf7aa2865d69d1f085bdb4e8e943. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR1A92104728 — a six-check JSON result.
Edith Canat de Chizy: Pluie Vapeur Vitesse
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f4c526fffb56348856f787267927be3f6ec5afc3e730e6c26b855e264c112e7. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR00W1900216 — a six-check JSON result.
The Art of the Percussion: Emmanuel Curt
Sonata for Alto Saxophone & Piano: I. Two-Part Invention
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf4630fccec81fcbb4eadaf7ecfe91a26a46491599ef6e15d7d174711ad8df99. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZ27R2000008 — a six-check JSON result.
Sonata for Alto Saxophone & Piano: II. La follia nuova (A Lament for George Cacioppo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01b01bc37dc7b4774aa484fc03970f64499d5606f9e93db7014c0a729e24c370. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZ27R2000009 — a six-check JSON result.
Sonata for Alto Saxophone & Piano: III. Scherzo "Will o’ the Wisp"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea901693c9a779bc1158e81f15767c9a96f1f1e04ccde3c6bb3e9159edb494e1. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZ27R2000010 — a six-check JSON result.
Sonata for Alto Saxophone & Piano: IV. Recitative & Dance
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x957eb1f3505a15186e892a910f359526b291654caea2bdd4fb57698eecf342da. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZ27R2000011 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x032a6f0636da58a54760d33e4ed55ac473f3475dca58b5ede2e9ffe70ae45644. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZ27R2000012 — a six-check JSON result.
Sonata for Alto Saxophone & Piano: I. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7f2378fbfcd98f34f79b8cf09f3280ccca88b9b483007b27e5c806007aa578f. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZ27R2000013 — a six-check JSON result.
Sonata for Alto Saxophone & Piano: III. Allegro moderato
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27e2afb79e50c36cfa14504fe938ebe6db9ee60c5b42f196379efb5d3f802b5f. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZ27R2000015 — a six-check JSON result.
Queen Elisabeth Competition: Piano 2021 (Live)
Piano Concerto No. 2 in B-Flat Major, Op. 83: I. Allegro non troppo - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88366cd7ad017d8a4b2772a78237ce92f7782792655497cb7aecda72aaa36c17. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BEF642100101 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bd9a1dbf9453f1406da968237c1545d86b56421cca9dc1853606c69fec25c8b. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BEF642100307 — a six-check JSON result.
The Art of the Clarinet: Philippe Berrod
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aa978748a82e292eb9293ee89b1f624eaf57c2e9117c73c190e816814c2a499. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US6GJ2115502 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e3679891eb18bef7211a63c6c08036b3096089d0388d7ba05bc526c63abe04e. Chain 2 (Bitcoin): anchored in block 960381 (2026-07-31T09:50:11Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US6GJ2115503 — a six-check JSON result.
Pierre Henry: La Dixième Symphonie, Hommage à Beethoven
Beethoven: The String Quartets, Live from Suntory Hall, Tokyo, Vol. 3
Renaud Capuçon plays Rihm, Dusapin & Mantovani
Passions: Un orgue baroque pour la création
Ultimos Movimientos: III. Onán en la Escritura
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe86297cee52f585c6569679cc70a8df76789514d2ed1d067bcd51f8268c2cbe6. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRP8I1811270 — a six-check JSON result.
Œuvres pour la main gauche - Anthologie, Vol. 7
Mantovani, Comitini, Lohse, Bo, De Murashkin, Montague: Aion (Contemporary Music for Bayan Solo)