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 0x033745397ae99cff67f036d63ef342e2df3d71cc65a5bb6cd1e5e8f9b5e4eaa2. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/91f522a0-1fbc-49c0-8cc3-541eded7679a.json and https://artists.proofprofile.net/proofs/artist/91f522a0-1fbc-49c0-8cc3-541eded7679a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
475 Jahre Sächsische Staatskapelle Dresden (Live)
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 0x72f7b71d051cee8b4d41637f839680a6d1efd6d877d891dbd316fcff2e3e36d9. 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/DEAD62307041.
Orchestral Suite No. 2 in B Minor, BWV 1067: II. Rondeau
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8050b9316336b2a1f4f86e37e32000463821d35cfdbe5a709de033a2ae29fb71. 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/ITCC51102089.
Orchestral Suite No. 2 in B Minor, BWV 1067: III. Sarabande
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbae57f2fdb04b8913db8c82fdd7c246ef1c7cc8e7f2d7b68eb3612f4daa9fd52. 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/ITCC51102090.
Orchestral Suite No. 2 in B Minor, BWV 1067: V. Polonaise - Double
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a32e12899afd0307dacf2a59bcf36e9325d0d60441b2a74548567dbd13f0e2d. 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/ITCC51102092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc346145cc8171ee784d92142df796ed47a9c5b17d1a1a256d2aa413140fbfaa. 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/ITCC51102095.
Flute Concerto in G Major: III. Allegro spiritoso
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String Quartet No. 12 in B-flat Major, K. 172: Ii. Adagio
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Clarinet Concerto in A major, K. 622: II. Adagio
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Symphony No. 40 in G Minor, K. 550: II. Andante
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Horn Concerto No. 2 in E-Flat Major, K. 417: II. Andante
Amadeus Chamber Orchestra of Polish Radio
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Piano Concerto No. 6 in B-Flat Major, K. 238: II. Andante un poco adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe451996f3e77d7bedbfbd3ffc9887fa815d30787abfcb1f7cf5ed32f270bf61b. 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/HKI199276405.
String Quartet No. 20 in D Major, K. 499, "hoffmeister": Iii. Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90b7724ab85e0f70841b8b0f0d40d6aa54f28b9b7f40369c8a82db15190d034b. 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/HKI199279003.
Piano Sonata No. 17 in B-Flat Major, K. 570: II. Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38c6768a9e5d93798e8514b09a4db21031c2ad6f5791ee783431e05324eab171. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/HKI199277605.
Symphony No. 39 in E-Flat Major, K. 543: II. Andante con moto
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Così fan tutte, K. 588, Act I Scene 2: Terzet - Soave sia il vento
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70c577058320ba017cb97177354dd778cf0bbaccec23051cdda50a7a6e16c785. 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/HKI199092719.
Piano Concerto No. 23 in A Major, K. 488: II. Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x543cf7c80e36778f3c88fde8c5e4392179515504c2e8ae098bf5b1991abc3d46. 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/HKI199276902.
Clarinet Concerto in A Major, K. 622: Ii. Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefd82c111e5540383f6662d81160367bd6f8fe599fc502363736c9990855d68a. 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/HKI199273708.
String Quartet No. 15 in D Minor, K. 421: Ii. Andante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb645db50915c2219d60eceed4ce13b9ea7b714040a24af7dc002bf5036c9081. 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/HKI199494810.
Serenade No. 13 in G Major, K. 525, "eine kleine Nachtmusik": Ii. Romanze: Andante
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Concerto for Flute and Harp in C Major, K. 299: Ii. Andantino
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Horn Concerto No. 2 in E-flat Major, K. 417: Ii. Andante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7cc94a840024a469b2720d5a052d31b37ee2714098263f1ccddcd631690addc. 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/HKI190712104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddaa90464d4c2f24b636731e407fdee23c37b485960bad1deb0d70e54255f158. 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/HKI199494702.
Serenade No. 9 in D Major, K. 320, "posthorn": Andantino
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Symphony No. 40 in G Minor, K. 550: Ii. Andante
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Piano Concerto No. 5 in D Major, K. 175: Ii. Andante ma poco adagio
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Piano Concerto No. 25 in C Major, K. 503: Ii. Andante
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Symphony No. 14 in A Major, K. 114: Ii. Andante
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Horn Concerto No. 4 in E-flat Major, K. 495: Ii. Romance: Andante cantabile
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Vesperae solennes de Confessore, K. 339: V. Laudate Dominum
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Mozart: Kleine Nachtmusik (Eine) / Serenata Notturna / Divertimenti
Serenade No. 13 in G Major, K. 525, "Eine kleine Nachtmusik": I. Allegro
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Symphony No. 40 in G Minor, K. 550: I. Molto allegro
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Symphony No. 25 in G Minor, K. 183: I. Allegro con brio
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a8dceded1f53de8564a59736c01e1a2bfdc3f74905baacbff6a807e0963cd52. 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/HKI199275608.
Symphony No. 38 in D Major, K. 504, "Prague": III. Finale: Presto
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Symphony No. 40 in G Minor, K. 550: I. Allegro molto
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Symphony No. 40 in G Minor, K. 550: III. Menuetto. Allegro. Trio
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Martin Turnovský. Great Czech Conductors
Le Carnaval des animaux, R. 125: IX. Le coucou au fond des bois
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Coleccion Clasicos, Haydn: Symphonies Nos. 92 & 103
Schmitt / Stravinsky / Naumann / Dvorak: Works for Wind Instruments
Pastores surgite. Latin Pastorals of the Czech Classical Period
Morthenson: Paraphonia / Dahl: Saxophone Concerto / Gregson: Tuba Concerto / Keuris: Catena
Mozart: Serenade No. 9, 'Posthorn' / Notturno
Krommer - Hummel - Martinu: Oboe Concertos
Martinu : Symphony No.4, Piano Concerto No.4 & 3 Ricercari
Dvořák: Serenade in D minor Op. 44, Serenade in E Major, Op. 22
Rosetti & C. Stamitz: Flute Concertos (Mono Version)
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Concerto for Flute & Harp in C Major, K. 299: II. Andantino
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24 Preludes for Piano, Op. 28: No. 3 in G Major, Vivace, ma non troppo
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Piano Sonata No. 14, Op. 27: I. Adagio sostenuto
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The Best Of Ksč (Vybrané České Masové Písně Ve Vzorové Interpretaci)
Symfonický orchestr Čs. rozhlasu v Praze
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Slavonic Dances, Series II, Op. 72: Mazur - Allegretto grazioso
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Sonatina, Op. 100: Scherzo. Molto vivace
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Benda, Stamitz and Rosetti: Flute Concertos
Flute Concerto in E Minor, Lee II:4: I. Allegro con brio
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Mozart pro lepší učení, koncentraci a paměť
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Pionýrské Písně (Vybral A Sestavil Zdeněk Petr)
Korte: Sinfonietta, Songs of Troubadours, The Story of the Flutes
Musica nova - Bohemica et Slovenica (Kalabis - Symphony No. 2, Ištvan - Ballad of the South)
Hurník: Šulamit - Novák: Passer Catulli - Eben: Loveless Songs
Železný & Feld Works for Violin and Orchestra
Ravel: Shéhérazade - Chausson: Poème de l'amour et de la me