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 0xdaa65685142eb8a6ffa395b6750354e6b1865956f9822d9dedce752f591e775b. Chain 2 (Bitcoin): anchored in block 953762 (2026-06-15T08:21:23Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/baeb558e-d700-429e-8584-bfee4b0c1c7e.json and https://artists.proofprofile.net/proofs/artist/baeb558e-d700-429e-8584-bfee4b0c1c7e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Mozart: Horn Concertos & Bassoon Concerto
Concerto pour cor No. 2 en mi bémol majeur, K. 417: I. Allegro
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 0x52af5b50cef1100380a88dfa3a5d67d62bc500873b36a2a07459aa35c32c3b5e. 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/CAJ721774301.
Concerto pour cor No. 2 en mi bémol majeur, K. 417: II. Andante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f0d5c9029055f5a7f963aa77a6a0e9e4f05ee98c110f1cb5458eedf28b34f3a. 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/CAJ721774302.
Concerto pour cor No. 2 en mi bémol majeur, K. 417: III. Rondo : Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8741e49d87a402dadc0a2010e8ffea4f01a20e85b3fc155d85502430119986e9. 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/CAJ721774303.
Concerto pour cor No. 3 en mi bémol majeur, K. 447: I. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe649802f39096aa59c2f2628804ba8a588fd0b9af7e3f52e207b13e46d9235a6. 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/CAJ721774304.
Concerto pour cor No. 3 en mi bémol majeur, K. 447: II. Romance : Larghetto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0fbc6b3f65f16c4f413f6c973804067cf4443dc427958b8b66cff27d8a60d30. 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/CAJ721774305.
Concerto pour cor No. 3 en mi bémol majeur, K. 447: III. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeddaaadb644f7cae1405b0c2f517af67edbe737ad6a9074cdbd4bf309fdd0640. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T20:47:18Z), 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/CAJ721774306.
Concerto pour cor No. 4 En mi bémol majeur, K. 495: I. Allegro maestoso
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3592dc04be0e77f947b65198369bdfce944a7a7c00a31f8080f1ac1ab4fcd76c. 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/CAJ721774307.
Concerto pour cor No. 4 En mi bémol majeur, K. 495: II. Romance : Andante cantabile
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed93740f7734877ca2c6428eb013e4440eca0caab10b940c62c09cf30b25a227. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:29:43Z), 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/CAJ721774308.
Concerto pour cor No. 4 En mi bémol majeur, K. 495: III. Rondo : Allegro vivace
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x844e47435d7701804d7a1756aa9c10dab291fade68bf08a3bd16e43aed6478cb. 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/CAJ721774309.
Concerto en fa majeur pour violon, 2 hautbois, basson, 2 cors, cordes et basse continue, RV 569: I. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c307bb236b947eda3dabebb8d01f06f95e1d9b3f02ef4b3404e0619e818bd16. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/CAJ721660201.
Concerto en si mineur pour 4 violons, violoncelle, cordes et basse continue, Op. 3 No. 10, RV 580: I. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa17c0f6c788f7f28d5b7fa59d50c6b30e793d3b4d56b1ff99c279059f1281999. 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/CAJ721660204.
Concerto en si mineur pour 4 violons, violoncelle, cordes et basse continue, Op. 3 No. 10, RV 580: III. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x612b3e4f639bd5e5b2ef333788c9f11a898851fc907e3b13caa66fd79c8c1b01. 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/CAJ721660206.
Concerto en do majeur pour 2 trompettes, cordes et basse continue, RV 537: III. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9757ad2fe9e184ce6e4f7a34d40cfcba68e2972522d49763620c5c7afcd41716. 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/CAJ721660222.
Clara et Robert Schumann - musique de chambre pour cor
L'Héritage Beethoven: Marsolais, LouisPhilippe Beethoven, L. Van / Czerny, C. / Ries, F. / Moscheles, I.
Horn Recital: Marsolais, Louis-Philippe - Strauss, R. / Strauss, F.J. / Lachner, F.P. / Schumann, R. / Pilss, K. (The German Romantic Horn)
3 Romances, Op. 22: II. Allegretto : Mit zartem Vortrage in G minor (Arr. for Horn and Piano by Louis-Philippe Marsolais)
Roy: Trois poèmes d'Éloi de Grandmont: I. L'âge des rêves