thumb|Portrait of Kowalski Jochen Kowalski (born 30 January 1954) is a German alto or mezzo countertenor, noted for his very rich timbre. Early life Jochen Kowalski was born in Wachow, Nauen Distric
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 0x6a5f8b8cc5bf224a351d42b551f85dfe9e7d64fe06fcb3aaf94997202b669b8e. 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/88a6ac6a-1c83-49a9-819f-2e811734d251.json and https://artists.proofprofile.net/proofs/artist/88a6ac6a-1c83-49a9-819f-2e811734d251.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Midnight Lounge - Chill Out Classics and Meditation
Orff: Carmina Burana, Introduction, Fortuna Imperatrix Mundi: O Fortuna
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 0xdb5cae17545d5319766310f2eb5eaeda4fbd74bf5a10b170d7e7d2b033461695. 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/DEA809201401.
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.
Introduzione al Dixit, R.636: 3. Allegro: Avenae restrictae sinceri
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16b2d80a0bd22a5355ef4658bf07c884cc11914b1845b66c77c98d6ad781653d. 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/NLA507614303.
Dixit Dominus (Psalm 109), R.594: 1. Allegro: Dixit Dominus
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc470ed8a849aa045ca490a0ffbb7a49eab1bac333410034c7d1b1cc8d49ac36. 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/NLA507614304.
Dixit Dominus (Psalm 109), R.594: 2. Largo: Donec ponam
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f0f0098d09248785a5bcfe27b92bd65615b75216398eb784597dc4d8cb67b9e. 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/NLA507614305.
Dixit Dominus (Psalm 109), R.594: 3. Allegro: Virgam virtutis tuae
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc8252872d292ba51453503546f4ab0bf8bd9a45e5eda3d04e82d280bbfab348. 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/NLA507614306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x020f1ec3f79545848c2fca0b8464657562f10d280f3d51536fbe998c26674a2a. 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/NLA507706106.
Gloria, RV 589: IV. Gratias agimus tibi – V. Propter magnam gloriam tuam
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6efb6ed16cb3be171847dd66ea4d594f971bc31f473ffd578f598a84e79f3dfa. 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/NLA507706107.
Dixit Dominus (Psalm 109), R.594: 7. Largo - Allegro molto: Judicabit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0984a4d7e5aec62b36a2018bac3943a0cd1f0ef8b4c5be9cdbbe06eb905560d. 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/NLA507614310.
Gloria, RV 589: VIII. Domine Deus, Agnus Dei
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf775269ef4e458f91f5c8dd38e78f95efca4735b866ab1923d085639ba9ce2ff. 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/NLA507706110.
Gloria, RV 589: IX. Qui tollis peccata mundi
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70b14ffe8cc214af5132febce6a51d12883c288aea28587c0c8bf3c230fb70de. 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/NLA507706111.
Dixit Dominus (Psalm 109), R.594: 9. Allegro: Gloria Patri
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9ca2a4b218e41fcb4506ac86e91ab5418d345d5c81fa560132f380431286725. 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/NLA507614312.
Gloria, RV 589: X. Qui sedes ad dexteram Patris
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa15b3b3949b03e8a5a749c257dc881dc8be58e2e2aa629f2e690ae9513cb4c8a. 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/NLA507706112.
Magnificat, R.611: 1. Adagio: Magnificat
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb80bc1d84bc04f12b136d05b0d84510dea305243146f927960500715dc4edb94. 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/NLA507801911.
Laudate Pueri (Psalm 112), R.602: 1. Allegro: Laudate pueri
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc419833b1074a45946c0b10a68719710d9decee15183d77ae148722d2f5be919. 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/NLA507801901.
Magnificat, R.611: 3. Andante molto: Quia respexit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0679f2dd373a72a62cc801abfd4ba23fe8c07489e193825d0e7927a87b991e7. 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/NLA507801913.
Laudate Pueri (Psalm 112), R.602: 3. Andante: Excelsus super omnes
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd5e4ea0850108d91f0668fafe9a5eb0cdc9cc01490fe205577849095c4c3b9f. 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/NLA507801903.
Laudate Pueri (Psalm 112), R.602: 6. Allegro: Suscitans
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa34f0e02e2d8b15072a20377fc943d5a9cfdfae49d5d1c86c8a40be77fdc497. 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/NLA507801906.
Laudate Pueri (Psalm 112), R.602: 9. Andante: Gloria Patri
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e26ba28779331aa55f6e8a2260d41b1a91ce6c33ad0a3af149539fe617fd1d3. 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/NLA507801909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x049f2cec8e308dd2c84b4f8c8d04663d2994e73759122dbdc808dbe1032c09c1. 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/NLA507706128.
Handel: Ode for St. Cecilia's Day, HWV 76: Air. "What Passion Cannot Music Raise and Quell"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ba5cfd88fcbbd2c847a5c7e1f0be862101295f96e6d460e020d13c3b46b11b7. 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/DEA807805003.
Vocal Recital: Kowalski, Jochen - / Martini, J.-P.-G. / Perez-Freire, O. / Eulenburg, P.
Handel in Italy: Cantatas, Arias, Serenata
Il delirio amoroso in D Major, HWV 99: I. Introduzione
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5e459c0a5c6aecd9fc50aaaa6051e067095286e8925bbef918f0d568fcb529b. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/NLY331704409.
12 Concertos, Op. 3 - "L'estro armonico" / Concerto No. 6 in A minor for Solo Violin, RV 356: 3. Presto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2809b2d3a7b6690f8fa12c950075cb89369b6b8263133c8a22271aa730be40f5. 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/NLA508309720.
Concerto for Violin and Strings in F, Op. 8, No. 3, R.293 "L'autunno": 3. Allegro (La caccia)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x983edb696e6cf5618183b69f72a22932b00ccc5b27de7e6da6fe1d5bd1f84fb1. 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/ITUM71600235.
Flautino Concerto in C, R.443: 3. Allegro molto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x307b99e180cbb75adf51b1b1ddde1bcb035334eda222fd6af7ad28d26cc99c0a. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF078440307.
12 Violin Concertos, Op. 8 "Il cimento dell'armonia e dell'inventione" / Concerto No. 2 in G Minor for solo violin, RV315 "L'Estate": III. Presto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b10b47a5e965a08807276e12cf163cf2c14bc324897e016df1bcf3de8e11279. 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/GBF075840306.
La stravaganza, Violin Concerto in G Major, RV 185, Op. 4 No. 7: IV. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2ad0cdff8f190eddee574239edc1480bd8e749b8a37fccf9c867be869035658. 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/DEF059002054.
12 Concertos, Op. 3 "L'estro armonico" / Concerto No. 7 in F Major for 4 Violins, RV 567: 3b. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06568166fdaba1e869c58a7d9e7eb5ce4c3ff88bdb882562b5cf8c999d53d4eb. 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/NLA506200292.
Flute Concerto in G Minor, RV 439 "La notte": VI. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef486b18a44108a12b4b7b0d30c401fe9d8d3c85b892c8797fc05db5545a8a09. 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/NLA508532609.
12 Concertos, Op. 3 "L'estro armonico" / Concerto No. 4 in E Minor for 4 Violins, RV 550: IV. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaff779c37821e87face86690600c7b38e87417d49553b9b55dc3d7fb768bceab. 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/NLA506200308.
12 Concertos, Op. 3 "L'estro armonico" / Concerto No. 2 in G Minor for 2 Violins and Cello, RV 578: 2. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ee40ff803f776f8105693c7a5816b0d514f3f4896c87883580a08e28239514f. 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/GBF078030705.
Concerto for Strings and Continuo in G Major, RV 151 "Concerto alla Rustica": 1. Presto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48430a5598afb59652a4406c00ae8f7be14f799a7a58d8804e790200cef1341b. 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/GBF076613100.
L'estro armonico, Concerto for 4 Violins in E Minor, RV 550, Op. 3 No. 4: II. Allegro assai
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f2a8dca4e1f7bad08cf5461a3c3675c5c180841663e7e2544a9f1894b1f65c0. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF058603292.
Concerto for Strings and Continuo in D minor, RV 129: 2. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bc55dd6832caec9f12db6aea8181ca1bb958bc9325d328ab1ea9c007a55d932. 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/GBF077740105.
Violin Concerto in F Minor, Op. 8, No. 4, RV 297 "L'inverno": II. Largo
Ensemble By Members Of Nhk Symphony Orchestra
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78420e490ed6ce97abfd70b3420004fb7ebf30bd5fe5ea008567aa86a3217f53. 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/JPTO00802537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5fca967b07e727131c1eeba76871a3d26377733e48fec37d08552e422275f84. 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/GBBBB9810201.
Concerto for Violin and Strings in F Major, Op. 8, No. 3, RV 293 "L'autunno": II. Adagio molto (Ubriachi dormienti) - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67a993c29b54f5a764adb38ef653162d26dcf07f912eff1f272b3641184ac2d5. 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/DEF059903092.
Cello Concerto in C Major, RV 398: III. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xace625e18a7ca06b420ca17ca8cfcccb44c5ea30bdd6a3c88379d82a4d530bd8. 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/DEF057700273.
Nulla in mundo pax, RV 630: 4. Alleluia (Allegro)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0db2844c1b5cf412686e2aeab92824c50f77c1cb3299d0d96d025e17342f549c. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/GBF077810523.
Concerto for Lute, 2 Violins and Continuo in D Major, RV 93: III. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bbe1b72d59cae2db99b5abf494819058635d4e0e59aad497381d9fdaec992c0. 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/DEF058401853.
Orfeo ed Euridice: Act III Scene 3: Ballo: I. Grazioso
Carl Philipp Emanuel Bach Chamber Orchestra
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x909ff6fa0e577e2c921d190c271f00328ff35bff50aa7e829c1816a3af3280ba. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/USB8U1013201.
Giovanni Battista Pergolesi: Stabat mater / Salve regina (Kowalski)
Opera Arias (Counter-Tenor): Kowalski, Jochen - Handel, G.F. / Mozart, W.A.
Christmas Vocal Music - Reichardt, J.F. / Bach, J.S. / Neuner, K. / Adam, A. / Gumpelzhaimer, A. / Brahms, J. / Handel, G.F.
Arnold Winternitz: Melodramen (Nachtigall und Kröte)
Jochen Kowalski - Handel: Opera Arias, Sacred Arias and Italian Cantatas
The Capital Dance Orchestra presents Jochen Kowalski
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90ab0224721b141f113ca3b50f9d3b99023e13ae8fd14a9d3b86c91023d460eb. 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/DEC480700014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd75dfa1b15e180e30bb138bd2d3cfb4aa2d59a32d2ee6360aeb7ee36edc54b1b. 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/DEC480700022.
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
Operetta Arias (Counter-Tenor): Kowalski, Jochen - Lehar, F. / Abraham, P. / Stolz, R. / Millocker, K. / Kunneke, E. / Strauss Ii / Lincke, P.
Vocal Recital: Kowalski, Jochen - Erwin, R. / Jary, M. / Schultze, N. / Doelle, F. / Mackeben, T. / Casucci, L. / Benatzky, R. (Evergreens)
Vocal Recital: Kowalski, Jochen - Bach, J.S. / Handel, G.F.
Vocal Recital: Kowalski, Jochen - Schumann, R. / Myslivecek, J. / Mozart, W.A. / Beethoven, L. Van
Opera Arias (Counter-Tenor): Kowalski, Jochen -
Arnold Winternitz: Die Nachtigall: Da klang auf einmal vom Fenster her
Arnold Winternitz: Die Nachtigall: Der Kaiser sprang gleich aus seinem Bette
Trio Sonata for Flute and Violin in D Major, RV 84: I. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7faf11eaba88603e103d04596ae84b88f7a4f973f5d9494f03199b6853bd37a. 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/DEF058001781.
Concerto for Flute and 2 Violins in D Major, RV 89: I. Allegro assai
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfefb99d147143d1256032027ec679561ef6f800733bd934ba44a64c79fb76558. 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/DEF058001801.
Concerto for Flute and 2 Violins in D Major, RV 89: II. Cantabile – Andante e poco vivace
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fa11b8909ce2d59722675f925cfeaf3c8794c16dff2451bd0e092e5cbe844cb. 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/DEF058001802.
Concerto for Flute and 2 Violins in G Major, RV 102: II. Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e5f9e7c5df09ea67e8ac1ae1d673dba0a58f29c87a1614a6b36881299d2a7bc. 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/DEF058001792.
Concerto for Flute and 2 Violins in G Major, RV 102: IV. Arietta
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4740eeb0d0ae4075a046bbaaaaf922c2af91da53d7027cdc80051b4719559d3. 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/DEF058001794.
The Four Seasons, Violin Concerto No. 2 in G Minor, RV 315 "Summer": III. Presto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x066088639de40ee4abb8005866aea4757eff8b4f0aab885e0f9abf24b0de0f56. 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/GBBBC2100169.
Concerto for 2 Mandolins in G Major, RV 532: II. Andante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f9243605cb9ee3fefa63574a83c8a25a01a0cdec07b014615de55bb74e1392b. 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/DEN961904212.
Concerto for Violin and Strings in F minor, Op. 8, No. 4, R.297 "L'inverno": 2. Largo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d71ecbc30a6fe0aacd66d0eba46bb587f3fb51126197d715e434b885313ca4e. 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/DEN960900282.
Wachet auf, ruft uns die Stimme, BWV 140: IV. Chorale. Zion hört die Wächter singen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe700bbd93892bf978f77d08d1a76600630eeebf924a788e073a92d2bcb20b654. 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/DEF057803511.
Ave Maria, "Ellens Gesang III", D839 - Arr. Ion Marin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b721c3efa053d12b8cfa47243cfe042eceb6450ee05e9cb52f7dfd614c80a1c. 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/DEF059103620.
Vesperae solennes de confessore in C, K.339: 5. Laudate Dominum omnes gentes
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe477b518fc35c89d25d40bf4c43ac267c539ac8893fcc01730255cf1931a7fa5. 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/GBF079011085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8627d595cc9df397b2d40fd1752cfbc9460ed4e3cc100d384bbe2ee48595a0db. 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/DEF058500700.
Stabat Mater, FP 148: XII. Quando corpus
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54b7477527a761b575e0fdc11861d6e3fd024986af721387d7becb99ca04eb61. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF058731312.
Stabat Mater, P. 77: I. Stabat Mater dolorosa
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9103727f1c8809e36b40c5ee275b43bc6a8d34664895be33f99834e0bcfc5932. 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/DEF058330301.
Nulla in mundo pax, R.630: 1. Nulla in mundo pax sincera - Edit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe996c61da5df55cb602d0bf4ee864cb99da4ba81192e7b1cbfbb166ce3549e7c. 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/GBBBA7850330.