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 0x7634d38e94f56b6146b3f030c1567c7f6aab830eb82b59a252a6b5cbd285a3a6. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/718e17a3-9521-4b8b-a32a-a9b9ccaa346b.json and https://artists.proofprofile.net/proofs/artist/718e17a3-9521-4b8b-a32a-a9b9ccaa346b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Clarinet Concert: Kriikku, Kari – Draskoczy, L. / Chaim, O.B. / Pansera, R. / Piazzolla, A. / Mehanna, H. / Al-Sumbati, R. (Bizarre Bazaar)
Brahms: Symphony No. 4 in E Minor - Leif Segerstam: Symphony No. 295
Music for String Orchestra, Op. 73: III. Rondo giocoso
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 0xc1bb4905944a1a0963c31a1f773a4b700c6248de734a0217d77b0c3a52872ff1. 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/DEB202162313.
Northern Lights - Music From Scandinavia
Merikanto : Oi, muistatko vielä sen virren, Op. 52 No. 3
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x828afa5787632f81f2ad2450880e16d5d1cf2a9801509857d181d812bbe61cd5. 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/FIFIN8100400.
Sibelius: 5 Pieces, Op. 75: No. 5, The Spruce
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x389b6ebe86bb7ccd58170442e07c4041c008d605e098d094afb42f1422b18630. 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/FIFIN9201100.
Gothoni: Der Ochs und sein Hirte (The Bull and Herdsman)
Esteban Sanchez: Albeniz - Recuerdos de Viaje
Violin Concerto No. 2 in B Minor, Op. 7 "La Campanella": III. Rondo (Arr. Kreisler for Piano & Violin)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74c1a2180519d62b8cb24b3fc7265c750cd280f57330b1cf1d34df63ef1d32fb. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/GBAYC1702555.
Berlioz: Herminie, Les Nuits d'été, Cléopâtre
Les Nuits d’été, Op. 7, H 81: No. 2, Le spectre de la rose
A Hidden Life (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82fa9e52fa0c3beb235b539efc1c984a694316e480d4be72b73f85b77af1583b. 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/USFM91900738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f48d90f8fa02535706ac8265e50aac977b822a9fedac2baae1dd684e60bd903. 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/USFM91900739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c87b0ab66cdafdc92bf6ce169304b830610a061e4eaa78eac7cf367e962a7fd. 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/USFM91900740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bd2a1bf6933ab11bd254573ac5539e691ba308ef64d6bad6827a665376442d5. 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/USFM91900741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cb091a0979ef94218299925cc71265600a184ce3f3d9c6cc8aaea1e59d6148e. 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/USFM91900742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06fb3ec08562f1e18873d4ee9af571863fa55d21c4fda2b9f91693e32671b78a. 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/USFM91900743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c9f1396dfe67c669a383f709361ed37e7e66d27d35d46b02bf7ca984cf7d897. 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/SEAEI9634090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c1c45a70ce90217165bfbaf938e1cf5b18c6b3cfb2a6b90a8ba7a30149d19e6. 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/USFM91900744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x876f22a451773fe09c2ba02a66808a69b67a2b9ddde8cf1291aa43b6556a1510. 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/USFM91900745.
Czech Suite in D Major, Op. 39: I. Allegro moderato
Polish National Radio Symphony Orchestra
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7045369b5fd588c8eca975e68c1d19c66a171845292b1afb84e1c62c0b8fbf21. 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/HKI199243702.
Kleines Requiem für eine Polka, Op. 66: IV. Adagio Cantabile
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbc70c5fd1211e72d7fd64044bbec1fa5dc0feaf54286aeb6bc86bcd76cf9c6f. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USTE10407417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x221d299cb43c7190259259a703217025887ee48ed5c10c02eba46a073677c18c. 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/USFM91900746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e24fed3b4d94ccd62bb636ede4f718aa19cbf6695b5cc7e2d6680d32889d900. 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/USFM91900747.
Peer Gynt Suite No. 2, Op. 55: IV. Solveig's Song
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf866318f4fd1c22ea64889a91e6b38174b11c80b430dfad4d9ad3fbc27d1e1d0. 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/FIFIN9700137.
Piano Concerto in A Minor, Op. 16: II. Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67a8bde2088425f8b35377306a864e5b1e50aaacfc783494e9a6449007e2bbf2. 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/GBAYD8400214.
Peer Gynt Suite No. 1, Op. 46: IV. In The Hall of The Mountain King
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a086530f5d2f19846234cb0db882fd8bd3802b6f4e605aeecd955126733e4b7. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/FIFIN9700133.
Piano Concerto in A Minor, Op. 16: I. Allegro molto moderato (Excerpt)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11a7b55914082365d3b8164a52a39dc5736db691647c2272ac344e33f71cc432. 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/GBAYD8400197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9dcedb27cefe15151fdd1705dbc613ead8b600e26ff8f4703a74a33dd5bc9c5. 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/GBAYC8300062.
Violin Sonata No. 3 in C Minor, Op. 45: III. Allegro animato
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7900f3e3fd6c1457f1f62a22563ca186e04723c0be73b3afbd03fb1243f81850. 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/GBAYC1402130.
Cello Sonata in A Minor, Op. 36: I. Allegro agitato
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4b2342cdc826b517d9d9b0f5d9235f08067fb9ba1925e4f92212c7253dbe477. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/GBAYC9302999.
Peer Gynt Suite No. 1, Op. 46: II. The Death of Aase
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Part: Tabula Rasa / Frates / Collage Sur Bach
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb7dc00d174eef5f0c5480ee013a0f2e6ff829d17e48cfdad802ec26de8a6e18. 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/SEAEI9634030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5b3d8239c01487bd047918ece854d56923e19402908c3b1db4c872a66c653f3. 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/SEAEI9634080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c9f1396dfe67c669a383f709361ed37e7e66d27d35d46b02bf7ca984cf7d897. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEAEI9634090.
Piano Concerto in A Minor, Op. 16: I. Allegro molto moderato
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Violin Sonata No. 3 in C Minor, Op. 45: II. Allegretto espressivo alla Romanza
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Sibelius, J.: Early Chamber Music, Vol. 1 - Violin Sonata / String Trios / Piano Quartet
String Trio in G Minor, JS 210: I. Lento
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4c7ad6fb67a157ad39b3d471bcd5e744db673a28237f3bd071dcd1d2922fd00. 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/FINDE9400130.
The Four Seasons, Violin Concerto in F Minor, RV 297 "Winter": II. Largo
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f3c4ae10d8ffc37a35cb247794e536155acc55a3030e7c49d55ec45eb8d0e3e. 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/GBAYC1502810.
Two Elegiac Melodies, Op. 34: I. Heart's Wounds
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Two Elegiac Melodies, Op. 34: II. The Last Spring
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