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 0x8f14201f0ae959a149c634fcd7520d9f65683ec17e00741027bac97bccc44071. Chain 2 (Bitcoin): anchored in block 953626 (2026-06-14T11:41:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2b3cbd3f-2110-4e6d-9816-d7aa2266168f.json and https://artists.proofprofile.net/proofs/artist/2b3cbd3f-2110-4e6d-9816-d7aa2266168f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Othmar Schoeck: Vom Fischer un syner Fru, Op. 43
Jürg Dähler · Viola Concertos / Signatures of Life – LIVE!
Mendelssohn: Die erste Walpurgisnacht, Op. 60
Vaughan Williams: Concerto for Two Pianos & Orchestra/Symphony No. 5
Concerto for 2 Pianos and Orchestra: II. Romanze - Lento
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 0x3631c751b81ea147f3fa82f8930ce81614ce7f370a776b67f7ef38533c873770. 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/DEE861200304.
Concerto for 2 Pianos and Orchestra: III. Fuga chromatica - Allegro
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Strauss: Der Bürger als Edelmann, Vier letzte Lieder
«Werden» works by Mozart - Beethoven - Tarrodi
Pierino e il Lupo, una fiaba musicale per bambini, Op. 67
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x794e7a13267f53c688b8a3201a356c6733d31a9e58241b13a054c600475ee01d. Chain 2 (Bitcoin): anchored in block 960300 (2026-07-30T19:42:40Z), 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/CH1262410901.
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 0xdfbd90a826ee4be56d7321fe3c2e63335be4623b754f702a4fd3fdd6b76e1c71. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/CH1262410902.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7aa953c8b04b7081a77f0b05dada25982b6cdbb69e2c94791c0caa9475d55bab. 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/CH1262410905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb9ddcd41e3fad638c9781787cd01d9a6e6ab031c32e58feed2e896d2ae4c693. Chain 2 (Bitcoin): anchored in block 960429 (2026-07-31T16:07:24Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH1262410906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a853521c6d6cc4d8447dbe46ab31cfc2405f192639ba28644182777f014ef97. 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/CH1262410907.
«Sein» works by Mozart - Syrse - Haydn - J.-C. Bach
Symphony No. 40 in G Minor, K. 550: I. Allegro moderato
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Symphony in G Miinor, Op. 6/6: I. Allegro
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Pedro y el lobo, un cuento musical para niños, Op. 67
Prokovief Pieder ed il luf, ina praula musicala per affons Op. 67 (Romansh Version)
Pedro e o lobo, um conto de fadas musical para crianças Op. 67
Pedro e o lobo, um conto de fadas musical para crianças. Op. 67: I. Pedro e o lobo é um conto de fadas musical…
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Pedro e o lobo, um conto de fadas musical para crianças, Op. 67: V. Agora eles estavam assim…
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Pedro e o lobo, um conto de fadas musical para crianças, Op. 67: II. Uma certa manhã…
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Pedro e o lobo, um conto de fadas musical para crianças, Op. 67: III. De repente, Peter se deu conta de algo…
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Pedro e o lobo, um conto de fadas musical para crianças, Op. 67: IV. E realmente: mal Pedro havia ido embora…
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Pedro e o lobo, um conto de fadas musical para crianças, Op. 67: VI. Porém caçadores vieram da floresta…
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Pedro e o lobo, um conto de fadas musical para crianças, Op. 67: VII. E então imaginem só este cortejo triunfal…
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Peter ve Kurt, çocuklar için müzikal bir masaldır Op. 67
Piteri dhe ujku, një përrallë muzikore për fëmijë, Op. 67
Pierre et le Loup, Op. 67 / Le Carnaval des animaux
Pierre et le loup, Op. 67, conte musical pour enfants: II. Un beau matin, Pierre ouvrit la porte du jardin…
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Pierre et le loup, Op. 67, conte musical pour enfants: VI. C'est alors…
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Pierre et le loup, Op. 67, conte musical pour enfants: VII. Et maintenant, imaginez la marche triomphale…
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Pierre et le loup, Op. 67, conte musical pour enfants: I. Introduction
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Pierre et le loup, Op. 67, conte musical pour enfants: III. Soudain, quelque chose dans l'herbe…
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Pierre et le loup, Op. 67, conte musical pour enfants: IV. Il était temps…
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Pierre et le loup, Op. 67, conte musical pour enfants: V. Et maintenant, voici où en était les choses…
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Le Carnaval des animaux, Grande fantaisie zoologique: I. Introduction et Marche royale du Lion. Andante maestoso
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Peter und der Wolf, Op. 67 / Der Karneval der Tiere
Vergehen: works by Haydn - Mozart - Kendall
بيتر والذئب، حكاية موسيقية خرافية للأطفال Op. 67
Franz Xaver Mozart: The Two Piano Concertos
Piano Concerto No. 1 in C Major, Op. 14: II. Adagio
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Piano Concerto No. 1 in C Major, Op. 14: I. Allegro maestoso
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Piano Concerto No. 1 in C Major, Op. 14: III. Rondo. Allegretto (Cadenza: Andriy Dragan)
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Piano Concerto No. 2 in E-Flat Major, Op. 25: I. Allegro con brio
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Richard Dubugnon: Klavieriana, Op. 70 & Chamber Symphonies Nos. 1 & 2
Rudolf Kelterborn: Ensemble-Buch I, Musik mit 5 Trios & Gesänge zur Nacht (Live)
Rococo Variations, Op. 33: Moderato assai quasi Andante
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Rococo Variations, Op. 33: Thema, Moderato simplice
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Rococo Variations, Op. 33: Variation 1, Tempo della Thema
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Rococo Variations, Op. 33: Variation 4, Allegro vivo
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Rococo Variations, Op. 33: Variation 7, Andante sostenuto
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Rococo Variations, Op. 33: Variation 2, Tempo della Thema
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Rococo Variations, Op. 33: Variation 3, Andante
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Concerto in A Major, Wq. 172: Allegro Assai
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f72b7f5d195e3a37a5c0f47cf4339c166cdf21b6027cdef71a68c7253af43f8. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BEY681400122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x979a241d835f17209c373f4284136b9729fc29d6923d93d56a5628d530826329. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BEY681400124.