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
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).
Ah ! toi belle hirondelle (Arr. for Soprano and Chamber Ensemble by Claude Lapalme)
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7575e2d184c31fed9edef09fd61324fa513d54d6bdd9a04e8da7e8b321d91d94. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/CAJ722482705.
Mozart: Horn Concertos & Bassoon Concerto
Concerto pour cor No. 2 en mi bémol majeur, K. 417: I. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52af5b50cef1100380a88dfa3a5d67d62bc500873b36a2a07459aa35c32c3b5e. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/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 956312 (2026-07-02T05:09:12Z), 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/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. 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: 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 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.
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
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. 1 en ré majeur, K. 412 (386b): I. [allegro]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebda59975d072c4f736c5728a78bd64d120b8bbc2e981cb374652efed1852bdd. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/CAJ721774310.
Concerto pour cor No. 1 en ré majeur, K. 412 (386b): II. Rondo : Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc503b9201a9adf02af1c36a3a08f619a625fb0b8bbfaf28df17601caddc6cf40. Chain 2 (Bitcoin): anchored in block 960181 (2026-07-30T00:53:20Z), 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/CAJ721774311.
Rondo pour cor en mi bémol majeur, K. 371: I. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6b2595e7c812e78988f53ba8dfc772496c84a633b1d7ae7d6882b71e87fb5bd. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/CAJ721774312.
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 mi mineur pour 4 violons, cordes et basse continue, Op. 3 No. 4, RV 550: III. Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e400624bb50ad260f338f77b1b4fe2ce45a1e680bca7886fa869b8cd7b1b43e. 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/CAJ721660212.
Concerto en fa majeur pour violon, 2 hautbois, basson, 2 cors, cordes et basse continue, RV 574: II. Grave
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3665eabbd5be0c4cd26d8d51a89520c801fd13136c32c279b2250419f77cdcc. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/CAJ721660215.
Sinfonia de l’opéra La verità in cimento, RV 739: I. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcbd48bc6599ec055920c91297ef0e4f1056e07d43eda85d35661c6f8ef7cbb1. 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/CAJ721660217.
Sinfonia de l’opéra La verità in cimento, RV 739: II. Andante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47157322dbbb9a6c81599f441a75bff93e44c095a3d6ad9812cceff7806853ec. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/CAJ721660218.
Concerto en do majeur pour 2 trompettes, cordes et basse continue, RV 537: II. Largo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe683bb7a2fa5d2dc22a64cb7f7f658c5308c4951a6a8daa7c89c3aae2baaa8d0. 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/CAJ721660221.
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 956312 (2026-07-02T05:09:12Z), 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/CAJ721660222.
Concerto en fa majeur pour violon, 2 hautbois, basson, 2 cors, cordes et basse continue, RV 569: II. Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x764b1bd594ae46ae5bf360cbb4fa5316cd662e52ddd2faf9a0737415e73162c1. Chain 2 (Bitcoin): anchored in block 960223 (2026-07-30T07:51:46Z), 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/CAJ721660202.
Concerto en fa majeur pour violon, 2 hautbois, basson, 2 cors, cordes et basse continue, RV 569: III. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12c6cba7e768b57b1ac192ca054393612e5c89b80b58615f697062604ca309a4. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CAJ721660203.
Concerto en fa majeur pour violon, 2 hautbois, basson, 2 cors, cordes et basse continue, RV 574: I. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcf07ec93741d7071225e22cb5df173839b62d6f90a60896d5e6d88a11692bf6. 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/CAJ721660214.
Concerto en fa majeur pour violon, 2 hautbois, basson, 2 cors, cordes et basse continue, RV 574: III. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc03debca53cccde1d5ad6394ec8afbe23b62408e5387bbb6093a7f4cab89d8a1. Chain 2 (Bitcoin): anchored in block 960300 (2026-07-30T19:42:40Z), 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/CAJ721660216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60933a1f5790d61e8a22c79b58e1f855b84b07ca7eef6d32badba2a31e195a44. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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/CAJ721364607.
Clara et Robert Schumann - musique de chambre pour cor
12 Klavierstücke für kleine und große Kinder, Op. 85, No. 12: Abendlied (Arr. for Horn and Piano by Louis-Philippe Marsolais)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19c9d48b701e26a689faa587fae838cc08a985cbee30ef73fc5f1e270067ee30. 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/CAJ722387412.
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