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 0x82f06148593c927b67e2bbbfd13064740c1a1c2c7b4afc14c5408c5a94e110b8. Chain 2 (Bitcoin): anchored in block 953808 (2026-06-15T16:45:15Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/eeb6edc7-1901-406e-aa30-a99be813ecf6.json and https://artists.proofprofile.net/proofs/artist/eeb6edc7-1901-406e-aa30-a99be813ecf6.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
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 0xf48d0182f11bae5255c90a0fc0100071310582884c5a8e9a1f0b6287c4383c1a. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB331524901 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26a3641111b3e99844a401cde2e2c8296fa1e68d7dfa0e2343510134ac284586. Chain 2 (Bitcoin): anchored in block 960187 (2026-07-30T01:34:28Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB331524902 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc22806b6dde76f6cc9bb584b3ed5f7ed75079fda65b0bd8579e858c811f7c4b4. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB331524903 — a six-check JSON result.
Fantasia for 4 Viols in B-Flat Major, Z. 736
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf57f5b1ee0f8a03f92e2fa810f96725e39a91bc9ba565d7b3fb9056261d57ba9. Chain 2 (Bitcoin): anchored in block 960183 (2026-07-30T01:10:20Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB331524904 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58dec2ccbd08ec024b424357c3c05394b6ab7f3d95de000b2b4222d4594fa641. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB331524905 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7350c0f11a843b616c240477fcda459b543cf19d86219fd1168eabc8fe93bbe0. Chain 2 (Bitcoin): anchored in block 960276 (2026-07-30T16:01:17Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB331524906 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb97cd40e8167936ad84bed2e3aea714f4204d33e6a3d90ca422a77d291097290. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB331524907 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a68aa7d33836b8f658a51d70819fb42c2f2267c2c70722525fe9dbf934cbdab. Chain 2 (Bitcoin): anchored in block 960314 (2026-07-30T21:00:46Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB331524908 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9616cf04d172b7b42bb9787377aca57aea1ada57d915a4a5bca9a256f99ea9d5. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB331524910 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8b608c56e155a7c63e0c79185b3831d9bdade01d283189785831f9f74e5862d. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB331524911 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc63746875165f2d49e97315d8c9a3937f122c771b684da04ab51d5667f1be865. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB331524912 — a six-check JSON result.
Arpeggione Sonata in A Minor, D. 821: I. Allegro moderato
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99dfe34ea716619aede22f986d1d3439378436787bb36e3e66e8afb5ca961aaf. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CHE272402667 — a six-check JSON result.
Arpeggione Sonata in A Minor, D. 821: II. Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07fec3f08425326ce3e28530ae2345f02f0136b2b9686f826f9d9fb9456c7479. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CHE272402668 — a six-check JSON result.
Manoel Dias de Oliveira: Sacred Music from 18th Century Brasil, Vol. II
Tractus para Missa dos Pré-santificados: I. Domine, audivi
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf759996d4c162dda0bd220f1dd651ce56a094a2bf63476818856b399b34ff060. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA371611199 — a six-check JSON result.
Tractus para Missa dos Pré-santificados: II. Eripe me, Domine
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8bbd4f2262cc72184fbf0bb447c3a958944670aa6847e3f52015d70f062fb07. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA371611200 — a six-check JSON result.
Te Deum laudamus: V. Te Prophetarum - Te Martirum
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x975304e119c09ad721a0b622e46a64ee58a149639958b218c21003f8198db616. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA371611205 — a six-check JSON result.
Encomendação das Almas: III. Senhor Deus
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc6afaeb87f7fe9b36aad36b4bf24f2ec6abb0e2ca698d9b3dea40737baaac47. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA371611217 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7008364710eb52cec36fe90df1211eeefa3f828b749b117813c27585412a5b22. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA371611221 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11031e9180d8f8a123b633f76bdfbfa1d6494a6b3df1280825efafae09fe2b86. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA371611222 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2292624c1d8c74d8e55ca517c1c91f0cc0672789531cdddd4b26bc3bded81ce. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA371611226 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b129c05c54f2bf674576e646ce64c37f5067c3e379836c83299958c59c714c7. Chain 2 (Bitcoin): anchored in block 960485 (2026-08-01T00:10:46Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA371611227 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6683ceb2a01efafdd0184c8f43a778434289a40a55ccf77529ceb68f81ba40f. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA371611228 — a six-check JSON result.
PROSPERO Catalogue 2024 - Our Listening Tips II: Various Composers
Marcello: Estro Poetico-Armonico (Salmi 14, 21, 27, 38 - Sonata a tré, viola di gamba, violoncello e basso continuo)
Concerto in F Major, RV 434, "Tutti gli instrumenti sordini": II. Largo e cantabile
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0363162bfdbcc08b7d2f66c4e24c8806a9959ed16ec34a1302daf74a1666f85a. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA560806187 — a six-check JSON result.
Sonata No. 1 for 3 Cellos in A Minor: I. Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62b0806fff5a970a2cde6507964fcf85a3fdde4205b5d3058d9e96617657a1f6. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITD920501100 — a six-check JSON result.
Sonata No. 1 for 3 Cellos in A Minor: II. Allegro - Minuetto I. Comodo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb73c45ed33814c8b18cfe9b5ac5a6091b3112a35390eac110d73bc7dc7fe2343. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITD920501101 — a six-check JSON result.
Sonata No. 1 for 3 Cellos in A Minor: III. Minuetto II. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75ab65b5ea1ec7d2b68759a0665e0e01b24026054534e32dcd0c03ab2e84ed55. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITD920501102 — a six-check JSON result.
Sonata in A Major, Op. 1 No. 5: I. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd57e948e11ceb8a87d6624374e62e5aa12ab61687b67088367bd22049c3e035b. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITD920501112 — a six-check JSON result.
Sonata in A Major, Op. 1 No. 5: II. Largo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x261b957dc63d07af9ecc17b8b755115d4ad34cead03cd6b3800b3aeca23dc5a8. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITD920501113 — a six-check JSON result.
Sonata in A Major, Op. 1 No. 5: III. Minuettos I & II
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe574f6759d41fa024570f7a359e85d3a24f6466650a69f8eb84188c87487687b. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITD920501114 — a six-check JSON result.
Sonata No. 6 for 3 Cellos in C Major: I. Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6388c6dc413c8238d24bce5b414474980d5bae755b89f4b385331428619dfa8. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITD920501115 — a six-check JSON result.
Schubert: Schwanengesang, D. 957: No. 9, Ihr Bild (Arr. for Arpeggione by Martin Zeller)
Spohr: Faust: Polacca (Arr. for Arpeggione and Guitar by Vincenz Schuster)
Schubert: Arpeggione Sonata in A Minor, D. 821
Schubert: Schwanengesang, D. 957: No 4, Ständchen (Arr. for Arpeggione, Guitar and Fortepiano by Martin Zeller)
Romberg: Cello Concerto No. 2 in A Major, Op. 3: II. Adagio (Arr. for Arpeggione and Guitar by Vincenz Schuster)
Schubert: Violin Sonata No. 3 in G Minor, Op. 137 No.3 (Arr. for Arpeggione by Martin Zeller)
Schubert: Violin Sonata No. 1 in D Major, Op. posth. 137/1, D.384 (Arr. for Arpeggione by Martin Zeller)
Pavans and Fantasies from the Age of Dowland
Lachrimae, or 7 Teares: I. Lachrimae antiquae
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcca5d31ea48712908bf89e50f5dd907ae084328d32f545929c0c58194217777b. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB331318901 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6194077f8fb0147046f0cb844be3ccbd4a9b36fb592fe760e9badf5d75f32bc5. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB331318902 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6f0c51b45164cefa26803616bef9de2bdd2e2853b2a0f8954d2bcb61063ec3a. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB331318904 — a six-check JSON result.
Fantasy for 3 Viols in E Minor [VdGS 10]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x010f2647c06a484dbfe6336a2cee5e0f35e75cec40b93b34a42d713917d4980b. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB331318906 — a six-check JSON result.
Canzonets to 2 Voices, Book 1: Fantasie a 2 "Il Lamento"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86d38fcedf7f9d9571c32c513929c904c6738d5193802ebccea14d764bafe3e9. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB331318908 — a six-check JSON result.
The Broken Consort I, Suite No. 3 in C Major: I. Fantasy for 2 Trebles and Bass
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cd9361db1356c6c521e742222fecaa9ded0d929cda0d428ddd0e18a9ab2333d. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB331318910 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe81851a4e9821a933fe702425fe02529ae2f6e509054a402c366bbd2315c9f97. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB331318912 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x848721d75665e77f76d08b3eec0f97a835a5455670f91dc0014f83a14218fd59. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZES51803120 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa40f2c217c1f3bd5109847959e5c12928693238f4063cd531504ddbb83e3f2d1. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZES51803123 — a six-check JSON result.
Sonata for Violoncello and Basso continuo, RV 42: I. Preludio. Largo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8ba8d21e4a5acf0276d7005b4e434eba0a02375bbd8cf7dbce8c2245b55dcb7. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEE471100210 — a six-check JSON result.
Sonata for Violoncello and Basso continuo, RV 42: III. Sarabanda. Largo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1ffd56dd186a99bbe683a6fad5305c11a1d78d7ff65c8ef174238ff7624e8bd. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEE471100212 — a six-check JSON result.