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 0x1a57a454e8dc89f172e20decd5ad19085e3254d74c7d46aabbf8aa9d070b2343. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cb5c2476-7c0d-404e-a5a8-a72dd0bcabf5.json and https://artists.proofprofile.net/proofs/artist/cb5c2476-7c0d-404e-a5a8-a72dd0bcabf5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Vanhal: Missa Solemnis in E-Flat Major, Stabat Mater in F Major & Symphony in D Major, Bryan D4
Vanhal: Stabat Mater in F Minor & Symphony in D Major
Symphony in F Minor, Bryan f1: 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdc615f0bf3ac70275eabccab376fe9b019a7e75828599457828912055ebfd97. 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/HKI192118301.
Symphony in F Minor, Bryan f1: II. Cantabile
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19c315a839ab6a3f756f19da9a4a2497a668ac508483c501d65cd41efec836cb. 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/HKI192118302.
Symphony in F Minor, Bryan f1: III. Allegro molto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdc68ae84c22fa4b74c75ff82a496ec58b72f631f5509fc204c95d46cbd558b9. 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/HKI192118303.
Symphony in E-Flat Major, Bryan Eb4: II. Andante scherzando
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14dc3d8b20772c01b94bc97c6facb267a46af443eeb6177f0b329a74a08abae9. 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/HKI192118305.
Symphony in E-Flat Major, Bryan Eb4: IV. Allegro molto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb1414c453f7a36a824a0c9d0e57460430bd0df8c5b52f88ff5d4dd5b497a850. 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/HKI192118307.
Symphony in C Major, Op. 25, Bryan C7b: II. Andante molto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc1d93fd723d56d3c0b7b7cdc39cd93971966e00afc669e7308792ba8c08bbc7. 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/HKI192118309.
Symphony in C Major, Op. 25, Bryan C7b: IV. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x910e2715f5e08af3da82d382f9f2cb1573941d9f3e98f288f122a3d46f84e0fa. 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/HKI192118311.
Oboe Concertino in G Major, Bryan G5: II. Minuetto. Moderato
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf838c3e1756b5c8ffd31921aeadba1a722cca2c50c317e2b8cad20cd4e660a65. 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/HKI192118313.
Oboe Concertino in G Major, Bryan G5: III. Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x394cbd547cace2e00471fa02c7398f97b2181e8ab35ab4d07b3d30ceb8e63c37. 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/HKI192118314.
Symphony in E-Flat Major, Bryan Eb4: I. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2b258d33c73a38ecc2d087505f199f94b3f28fff1f5dde93cae890509d1394b. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI192118304.
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
Symphony in C Major, Op. 25, Bryan C7b: I. Allegro molto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8232c8dbdb7d744462c0dc102efb286aff961f45cd9df3b18a961282e7c05a49. Chain 2 (Bitcoin): anchored in block 960430 (2026-07-31T16:09:41Z), 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/HKI192118308.
Oboe Concertino in G Major, Bryan G5: IV. Minuetto. Moderato
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0dfc85881a3c6e509e7ce2406a90afbe868e5fcb35046eece82bffe424a7300. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI192118315.
Vanhal: Flute Quartets, Op. 7, Nos. 2, 3, 6
Dittersdorf & Vanhal: Double Bass Concertos
Jan Křtitel Vaňhal: Instrumental Concertos
Johann Baptist Vanhal: Sonatas para Clarinete y Piano
Vaňhal: Sonaten für Klarinette und Hammerklavier
Clarinet Sonata in B-Flat Major: II. Adagio cantabile
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9037ae417870e965bac9abc678ed3ba393729541abb3c4005abd68c0e88f657. 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/ATG301398808.
Clarinet Sonata in E-Flat Major: II. Poco adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x177a3eb6df8b46e03ae0d0915edc02ef793ca63efb377b91de1d814d0d876e79. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ATG301398802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc382e89e2b600f0910d292322930752fe4954ba6fc10fc6fc2071ea4e575125. Chain 2 (Bitcoin): anchored in block 960218 (2026-07-30T06:57:05Z), 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/ATG301398811.
Jan Křtitel Vaňhal: Trios for Clarinet, Violin and Cello
Jan Křtitel Vaňhal: Sonatas for Harp and Violin
Vanhal: Symphony in C major - Cello Concerto in C major - Symphony in E minor
Vanhal: Violin Concertos in G Major, B-Flat Major, and G Major
Symphony in D Major, Bryan D2: I. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee3991ce689b6815bd58c744189fa143ca668d5719528e4f5f6bd9d09f62c89e. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI190411801.
Symphony in D Major, Bryan D2: III. Menuetto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x111c891bae3f9b93b1603fd253a3eae338fc9e155022a998c5641e82fd90a662. Chain 2 (Bitcoin): anchored in block 958041 (2026-07-14T18:13:17Z), 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/HKI190411803.
Symphony in D Major, Bryan D2: IV. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f1b32a08037c90bc4b288fca8bc8697b7016b018b064f4337f8135d423eb0ea. 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/HKI190411804.
Symphony in C Minor, Bryan Cm2: II. Andante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5216371717229253eaafe6f1f106bcf983cc6245287202c159cc4dad9247b242. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/HKI190411806.
Symphony in C Minor, Bryan Cm2: III. Menuetto moderato
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ace560493c881c8dcfe3178296ffd4e201a4efdcbf51aef602ae72ed59ad9bf. 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/HKI190411807.
Symphony in C Minor, Bryan Cm2: IV. Allegro molto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4da6a9639cd27be9aa1f28b45f2d942129a628a30ca6b9d2ca4539b12f78fca9. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-21T21:51:09Z), 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/HKI190411808.
Symphony in A-Flat Major, Bryan Ab1: I. Allegro molto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbff48fcdc1c86cc24a6c2eec9d45cdf56878ad25ed7bbfe3778372bca8f825d. 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/HKI190411809.
Symphony in A-Flat Major, Bryan Ab1: III. Menuetto I and II
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x428559818ec3acea15b5703db66bece26668321c3df0a25d6f9863d0cc847831. 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/HKI190411811.
Symphony in A-Flat Major, Bryan Ab1: IV. Finale: Allegro molto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2870127b71c013a71e47617a5ac47945d824f99eb1f8a4b1e2f939b26d41f9df. 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/HKI190411812.
Symphony in G Major, Bryan G6: II. Andante molto grazioso
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55d1743c66454e686c787fa4cfbebe31f09bc94b36f3b9c294af6fe40792906e. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/HKI190411814.
Symphony in G Major, Bryan G6: III. Menuetto I and II
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfc0f37008f6e804d011fae3e528109e2e812cb43fc15eaf6d504fac81b059bb. 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/HKI190411815.
Symphony in D Major, Bryan D2: II. Andante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f2254420818232dfeef65d8362dface6841fc0122dab825ec8d4bedfddf2030. Chain 2 (Bitcoin): anchored in block 960288 (2026-07-30T17:41:38Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI190411802.
Symphony in C Minor, Bryan Cm2: I. Allegro moderato
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08dc6e944c7246b4dcd98f9f70e6944fe85dfaccb02c63a6957152b53236029f. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI190411805.
Symphony in A-Flat Major, Bryan Ab1: II. Adagio molto cantabile
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cdef6b9aeb3bb8afa8cbd876e3486cca7e2e9f6116be7b9a102a2afb3a45fc2. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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/HKI190411810.
Symphony in G Major, Bryan G6: I. Allegro ma non molto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55713ae433c8e28ea08afce1769024228551d7b4cf88e09a52a67e0796753985. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI190411813.
Symphony in G Major, Bryan G6: IV. Finale: Allegro ma non troppo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa906563dcf19a46065170c326f8e6543cdcd856271f076cc8c7ffaede2233fee. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/HKI190411816.
Vanhal: Missa Pastoralis / Missa Solemnis
Vanhal: 6 Oboe Quartets "Quartette Concertante"
Vanhal: Concerto for 2 Bassoons in F Major / 2 Sinfonias
Vaňhal: String Quartet No. 2 – III. Adagio sostenuto
Johann Baptist Vanhal: Allegro moderato (from: Symphony in G minor)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe79f784d240d7023b207e7e94192e9a1d36a947d1ebf1c1f1dbabf5d097027e3. 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/DEB202043301.
Vanhal: Oboe Quartet in F Major, Op. 7 No. 1: II. Cantabile. Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x215ac06a80e1715ab6986461729f53db5143870a4d66aafbcea1d96128a824a2. 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/GBAYC1501582.
Konzert für Kontrabass und Orchester in D-Dur: I. Allegro moderato
Klaus Trumpf - Klassische Werke für Kontrabass
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c1369f73fc556c0194ff6a284d70918b58a129cae1ffa800e579a96a362a57a. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/DES380013411.