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 0xd1f721fc9df498c860f2daddc67a6b96a805c582cd348115f1e1cb8444cec0d4. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8ad3426b-7dbd-4f0b-a65e-c346721fb300.json and https://artists.proofprofile.net/proofs/artist/8ad3426b-7dbd-4f0b-a65e-c346721fb300.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Hindemith: The 4 Temperaments - Piano Concerto
Midnight Lounge - Chill Out Classics and Meditation
The Nutcracker, Op. 71, Act II Tableau III: Pas de deux: The Prince and the Sugar-Plum Fairy
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 0x535e1655df8e5f7baf003bdaee52ece1e3e83fcdc616964eb06568378cf5da38. 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/US2TL0932326.
Christmas Festive Concert - Bach, J.S. / Handel, G.F. / Praetorius, M. / Manfredini, F.O. / Mendelssohn, Felix / Gabrieli, G.
Oboe Concerto in D Minor, Op. 9, No. 2: II. Adagio (arr. for trumpet and organ)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf18e9479a4b78d135b948f713ad6dd482cdc620cbfcf8b3661255d5298accfdd. 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/USB8U1011367.
Classic Moods - Handel, G.F. / Bach, J.S. / Mozart, W.A. / Boccherini, L. / Telemann, G.P. / Besard, J.-.B. / Fasch, J.F.
Flute Sonata in E-Flat Major, BWV 1031: II. Siciliano (arr. for flute and harp)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c23e0d744747ddd21ec5041323de045cfc980d9f09766043a2b40436eb25873. 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/US2TL0926010.
Classic Moods - Humperdinck, E. / Faure, G. / Brahms, J. / Schumann, R. / Puccini, G. / Grieg, E. / Schubert, F. / Puccini, G. / Rheinberger, J.G.
Waldscenen, Op. 82: Waldszenen, Op. 82: No. 3. Einsame Blumen (Solitary Flowers)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc91dcc780f23c8c44a0cab62d853b1b35bb3678f0b73e193c08812e8e29300f6. 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/US2TL0925204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda7919b9196214c0847bf7c83fbf977f89c324afc08cb6f888ffaaff59c7ff57. 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/DEA580600138.
12 Pieces for Organ: III. Toccata in G Major
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee244fddb18cce551093d0da60ac20630594d8593456b4e9e4abedaadf3ba616. 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/GBC7N1040613.
Herz und Mund und Tat und Leben, BWV 147: 10. Jesus bleibet meine Freude
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a4637fdcd3277721190a46667c7d927255fe1f078f280a5d06469e317801396. 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/FR10S1547887.
Suite for Orchestra No. 3 in D Major, BWV 1068: II. Air (Arr. for Organ)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc80aa3649e900036ff28b486bc9ef11587c07509da16e8ada8d7d8549980a55a. 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/DEA580900502.
Organ Symphony No. 5, Op. 42, No. 1: V. Toccata
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3e1b2e7f55bd7fa2288a26daf70c12cf17c7dd5a370dfa4722f386d33c65d41. 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/GBC7N1046716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2356571d33e1d5133a8607725e0df6d86fb7f529bcf6940ca6847b1b259df153. 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/GBC7N1040608.
Pièces de Clavecin: Le Coucou (Arr. for Organ)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a58667eb8ce7a1d21400391df49266f12cce081c77fe1ea4e031bce92af2883. 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/DEA580900417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6be9663e92cecd61d5e01dc80a37c3a49f1ed33bed518549d5976f9d8b9c3ecb. 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/GBC7N1043801.
Prélude and Fugue No. 3 in E-Flat Major, Op. 99, No. 3
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7fb0f6c4bc725847e0108e632ff4a7d8ab07edf685bfba364ad09a275a6c945. 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/DEA580601163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d8df0971a24e8af98e9ff251d537af7b270fbf53c1cd1cb33a6a8c3de671b18. 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/GBC7N1040601.
Organ Sonata No. 4 in E Minor, BWV 528: III. Un poco allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed4daf8b6d175d111a5c5034886c8f0d7ec7b93d90dfb9bd798c5a6bb09f86be. 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/DEA581800287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88c4a97842eb90cabacd8c1a0a288b963c96c34447b087f4f08824367fe6c9b8. 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/USX761218706.
Ibert, J.: Flute Concerto / Francaix, J.: Quadruple Concerto / Jolivet, A.: Concertino for Trumpet and Piano (Concertos Francais)
STRAVINSKY, I. / SCHOENBERG, A.: Violin Concertos (Erxleben, Berlin Symphony, Schonwandt, Flor)
SHOSTAKOVICH, D.: Violin Concerto No. 1 / HARTMANN, K.A.: Concerto funebre (Erxleben, Berlin Symphony, Flor, New Berlin Chamber Orchestra, Weigle)
Boccherini: Symphonies Nos. 13, 15, 16, 17, 18, 19 & 20
Donizetti, G.: Concerto for Violin and Cello / String Quartet No. 17 / Verdi, G.: String Quartet (Arr. for Strings)
Respighi, O.: Violin Sonata (After J.S. Bach) / Pastorale / Suite / Saint-Saens, C.: Romances - Opp. 27, 48 (Spectacular Strings)
Boccherini, L.: Symphonies, Vol. 2 - Opp. 41, 42, 43, 45
Boccherini, L.: Symphonies, Vol. 1 - Nos. 13, 15, 16
Classic Moods - Bach, J.S. / Gounod, C.-F. / Beethoven, L. Van / Schubert, F. / Wieniawski, H. / Dvorak, A. / Bruch, M. / Grieg, E.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1e12ce8f44e3802beeca038b9ed3362465b8c08e5a10d2f41ea2af39a8492fe. 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/US2TL0925401.
Moment Musical in F Minor, Op. 94, No. 3, D. 780 (arr. for chamber ensemble)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x033d34071b7113542a79087418c5ed2c967b6b17758330cd77020c83843c6501. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/US2TL0925403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97d617d55bbc38f196ecd98cadbdae98c6d5f6ca9fce2f80a534c771f3d91cb8. 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/US2TL0925410.
Das große Festkonzert zur Weihnachtszeit
String Quartet No. 14, D. 810: II. Andante con moto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a836f443e1d9480f60f97255c3ef15d299f496c9d99f1d6175cfab1f7e07d0a. 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/DEKB72450723.