1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 artist was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7f819efcc83e4d864bb480438bc10eea99c40c881397f30e61b6921c5cf4ce8. 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/9bda1edc-f491-445a-ad0a-edd759578e67.json and https://artists.proofprofile.net/proofs/artist/9bda1edc-f491-445a-ad0a-edd759578e67.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
4 Letzte Lieder, TrV 296: No. 1, Frühling
4 Letzte Lieder, TrV 296: No. 2, September
4 Letzte Lieder, TrV 296: No. 3, Beim Schlafengehen
4 Letzte Lieder, TrV 296: No. 4, Im Abendrot
Ariadne auf Naxos, Op. 60, TrV 228a: Es gibt ein Reich, wo alles rein ist
Capriccio, Op. 85, TrV 279: Schlussszene der Grafin
Le nozze di Figaro, K. 492: E Susanna non vien!
Mša glagolskaja (Glagolitic Mass), JW III/9 [original version]: Intrada
Mša glagolskaja (Glagolitic Mass), JW III/9 [original version]: Uvod [Introduction]
Mša glagolskaja (Glagolitic Mass), JW III/9 [original version]: Gospodi pomiluj [Kyrie] [Soprano, Chorus]
Mša glagolskaja (Glagolitic Mass), JW III/9 [original version]: Slava [Gloria] [Soprano, Tenor, Chorus]
Mša glagolskaja (Glagolitic Mass), JW III/9 [original version]: Veruju [Credo] [Tenor, Bass, Chorus]
Mša glagolskaja (Glagolitic Mass), JW III/9 [original version]: Svet [Sanctus] [Soprano, Alto, Tenor, Bass, Chorus]
Mša glagolskaja (Glagolitic Mass), JW III/9 [original version]: Agnece Bozij [Agnus Dei] [Soprano, Alto, Tenor, Bass, Chorus]
Mša glagolskaja (Glagolitic Mass), JW III/9 [original version]: Varhany solo [Postludium]
Mša glagolskaja (Glagolitic Mass), JW III/9 [original version]: Intrada da capo
Die Fledermaus: Act I: Duettino: Ach, ich darf nicht hin zu ihr (Rosalinde, Adele)
Die Fledermaus: Act I: Trio: Nein, mit solchen Advokaten (Rosalinde, Eisenstein, Blind)
Die Fledermaus: Act I: Trio: So muss allein ich bleiben (Rosalinde, Adele, Eisenstein)
Die Fledermaus: Act II: Duet: Dieser Anstand, so manierlich (Rosalinde, Eisenstein)
Die Fledermaus: Act II: Klange der Heimat (Rosalinde)
Die Fledermaus: Act II: Finale: Genug damit, genug! (Orlofsky, Eisenstein, Adele, Rosalinde, Frank, Falke, Chorus)
Die Fledermaus: Act III: Trio: Ich stehe voll Zagen (Rosalinde, Alfred, Eisenstein)
Die Fledermaus: Act III: Finale: O Fledermaus, o Fledermaus (Rosalinde, Adele, Ida, Orlofsky)
The Essential Warsaw Philharmonic Orchestra
Der vierjahrige Posten, D. 190: Overture
Schubert, F.: Vierjahrige Posten (Der) / Zwillingsbruder (Die) [Opera]