The Drottningholm Court Theatre Orchestra
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 0xb39a15d09798bc13a667236d8b110c899677f2942b56796279a62939b2201c30. 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/edf52a14-9010-4800-ae32-9eeb72d5a73c.json and https://artists.proofprofile.net/proofs/artist/edf52a14-9010-4800-ae32-9eeb72d5a73c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Le nozze di Figaro, K.492 / Act 3: "Sull'aria...Che soave zeffiretto"
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 0x03fb62e339c910ea21557b3401e57ef852da62616dea3ed7b07c6fd9369bc738. 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/GBF078741232.
Die Zauberflöte, K.620 / Act 1: "O zittre nicht" - Dialog "Betäuben mich meine Sinne?"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08e4a59d986ce313e3e7d486d948fa614acf230886f47fa0c521d83a45b4e2a6. 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/GBF079242905.
Die Zauberflöte, K.620 / Act 1: "Bei Männern, welche Liebe fühlen"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e2259c2584689ef4e842b6c5523bd3953400cebdc4af854acae3f6f916e81ee. 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/GBF079242908.
Die Zauberflöte, K.620 / Act 2: "Der Hölle Rache kocht in meinem Herze"
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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
Barbara Bonney - The Radiant Voice of Barbara Bonney
Dido and Aeneas / Act 3: "Thy Hand, Belinda...When I Am Laid In Earth"
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Schweigt stille, plaudert nicht, BWV 211 "Coffee Cantata": 8. Aria: "Heute noch, lieber Vater, tut es doch"
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x186cb71824d088b7c178a0291c3e3dd4fee8704c06cdd0029d287520fb4b5230. 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/GBF079940001.
Exsultate, jubilate, K. 165: IV. Alleluja. Allegro
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Vesperae solennes de Confessore, K. 339: V. Laudate Dominum
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Die Zauberflöte, K.620 / Act 2: "Ach, ich fühl's"
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa707ad61026d2a32d56cd056b6bff9042649999739fadaac25b851ac6d75302b. 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/GBF079641325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dd10b8ec2ec4b45eeefff63df46c723a21cfc67c109f6d38271715e772a56a1. 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/GBF079813430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26ca54a859d94e0a35631af60d54dcc02038e6dc97a920d1dcfc6d479f0cc030. 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/GBF079912093.
Carmina Burana / 3. Cour d'amours: "In trutina"
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37ce69c5779b9542c9cceed7357cdcdc58ecc82b4aa5aaeb411f38ba6b3cae2d. 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/GBF079740004.
Le nozze di Figaro, K.492 / Act 4: "Deh vieni, non tardar"
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The Four Seasons, Violin Concerto in F Minor, Op. 8 No. 4, RV 297 "Winter": II. Largo
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2 Dialogues with Postscript (Version for Piano & String Orchestra): No. 3, Morning Serenade
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Andersen Fairy Tales Suite: I. The Rose-Tree
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Le bourgeois gentilhomme: Chaconne des Scaramouches, Frivelins et Arlequins
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Consolations, S. 172 "6 Pensées poétiques": No. 3, Lento placido
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Sea-Murmurs (Arr. J. Heifetz for Cello & Piano)
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc28b640b9400fafeae5a7ac9ad85aaa6f2976137ae12fc674fb2485961501632. 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/HKI192232106.
Leaves from a Child's Sketchbook: In the Meadows
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4 Short Pieces for Violin & Piano, H. 104: No. 2, Spring Song (Version for Cello & Piano)
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Lyric Pieces, Book 1, Op. 12: No. 1, Arietta
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Orphée et Eurydice, Act II, Scene 2: Ballo
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Carnival of the Animals, R. 125: XIII. The Swan
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3 Romanzen, Op. 22: No. 1, Andante molto (Arr. For cello and piano)
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2 Pieces for Strings from Henry V: No. 2, Touch Her Soft Lips and Part
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Suite bergamasque, L. 75: III. Clair de lune (Featured in "Man on Fire")
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93ab138b4bc53d8469484d145698b00f8d8de30245658ec8b41d3094d079121c. 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/HKI199298728.
The Macau Bride Ballet Suite, Op. 34: IV. The First Glance
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Triakontameron: No. 11, Alt-Wien (Arr. J. Heifetz for Violin & Piano)
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Valses poéticos: No. 3, Tempo de Vals lento (Arr. P. Breiner for guitar and orchestra)
Polish National Radio Symphony Orchestra
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Chanson de nuit et Chanson de matin, Op. 15: No. 2, Chanson de matin
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb04ea7eef3237b5fd0b6549c1db32f7bbc9d327f0dfe46727c26892b06e4ee4f. 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/HKI199737401.
Petite suite de concert, Op. 77: III. Un Sonnet d'Amour
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The Mermaid Ballet Suite: III. Waterweed (Version for piano)
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Orquesta Juvenil Universitaria Eduardo Mata
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3 Latin American Sketches: No. 2, Paisaje Mexicano
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A Guided Tour of the Classical Era, Vol. 1
Art & Music: Canaletto - Music of His Time
Hvad glans, behag och smak – Svenskt 1700-tal i musiken / Eighteenth-century Sweden in music
Joseph Martin Kraus – A Musical Portrait