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 entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x394234504b7efbdc5669fca55738ffc1792fe5dcf72c53523d3a0bc81c2d54de. Chain 2 (Bitcoin): anchored in block 954048 (2026-06-17T05:00:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/40e54ce8-4bcc-4fc5-aa09-f55a097e2bcc.json and https://artists.proofprofile.net/proofs/artist/40e54ce8-4bcc-4fc5-aa09-f55a097e2bcc.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Lodoletta: Act I: Ah! Cercalo, cercalo! (Chorus)
Children's Chorus of the Hungarian State Opera
Lodoletta: Act II: Che mattinata grigia (Lodoletta, Flammen)
Lodoletta: Act I: Graze, comari (Antonio, Giannotto, Chorus)
Lodoletta: Act II: Ah! Signor Flammen! (Lodoletta, Flammen, Un Postino, Chorus)
Lodoletta: Act I: Ferma! Ferma! (Franz, Flammen, Chorus)
Lodoletta: Act II: Perche? Perche? Vanard! (Lodoletta, Giannotto)
Lodoletta: Act I: Piango sulla tua tomba! (Antonio, Franz, La Pazza, Flammen, Chorus)
Lodoletta: Act II: Nessuno! Respiro! (Lodoletta, Flammen)
Lodoletta: Act I: Dicon che a far denari (Antonio, Chorus)
Lodoletta: Act III: L'anno moure (Una Voce, Chorus)
Lodoletta: Act I: Serenata delle fate (Chorus)
Lodoletta: Act III: Ah! Iasciami! (Franz, Flammen)
Lodoletta: Act I: Ah! voi cantate meglio delle fate (Antonio, Lodoletta)
Lodoletta: Act III: No! No! Non e piu Flammen (Lodoletta, Una Voce, Antonio, Maud, Chorus)
Lodoletta: Act I: Lodoletta (Lodoletta, Giannotto)
Lodoletta: Act III: Ah! Il suo nome! (Lodoletta)
Lodoletta: Act I: A vol, bambini (Antonio)
Lodoletta: Act III: E quando mezzanote scocca (Franz, Flammen, Maud, Una Voce)
Lodoletta: Act I: Antonio (Lodoletta, Giannotto, Chorus)
Lodoletta: Act I: Povero Antonio (La Vanard)
Lodoletta: Act I: No, comari (Lodoletta, Giannotto)
Lodoletta: Act I: E qui (Lodoletta, Flammen)
Lodoletta: Act II: Oggi saria finita (Lodoletta)
Lodoletta: Act II: All'alba di Novembre (Chorus)
Lodoletta: Act II: Bu! Bu! Bu Malandrini (Lodoletta, Flammen, Chorus)