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 0x116e11ef886ad7dff468246139fb052961f4470079dc205133d1c962903fa6c8. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e912995a-333e-454d-b18c-1ede62f1e3b9.json and https://artists.proofprofile.net/proofs/artist/e912995a-333e-454d-b18c-1ede62f1e3b9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
I Compagnacci: I magnifici e potenti Signori (Il banditore)
I Compagnacci: Cento! Duecento! Quanti ne abbisogna (Bernardo, Venanzio)
I Compagnacci: Ah! Finalmente (La fantesca, I Fanciulli, Il Fanciullo Capitano, All)
I Compagnacci: Baldo! Baldo mi lasci sola sola (Anna Maria, Bernardo)
I Compagnacci: Ghiandaia! via! (Baldo, Bernardo, Noferi, I Parenti di Nofer, Venanzio, Noro do Gozzo, All)
I Compagnacci: Baldo! Baldo! (Anna Maria, Baldo, I Compagnacci, All)
I Compagnacci: Anima mia! (Baldo, Anna Maria)
I Compagnacci: Tornano (Baldo, Anna Maria, Bernardo, I Parenti, I Compagnacci)
I Compagnacci: Baldo! (I Compagnacci, Anna Maria, Baldo, Bernardo, I Parenti, La Folla)
I Compagnacci: E' nata … una temenda … discussione (Ghiandaia, I parenti, All)
Gianni Schicchi: Ai Miei Cugioni Zita E Simone
Gianni Schicchi: E Non C'è Nessum Mezzo...
Gianni Schicchi: Firenze È Come Un Albero Fiorito
Gianni Schicchi: Quale Aspetto Sgomento E Desolato!
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 → block OTSBitcoinBlock must exist at that height 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 0xa51a186764a710077a1bb5e800a478af86fbc687d33aa6d66a70c9e2d4931530. 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/AUXN22045730.
Gianni Schicchi: Nessuno Sa Che Buoso Ha Reso Il Fiato?
Gianni Schicchi: Ladro, Ladro, Furfante!
Gianni Schicchi: Lauretta Mia, Staremo Sempre Qui
Suor Angelica: Ave Maria, Piena Di Gratia
Suor Angelica: Sorelle in Umiltà, Mancaste Alla Quindena
Suor Angelica: Laudata Maria! E Sempre Sia!
Suor Angelica: Suor Angelica! Madre, Madre, Parlate!
Suor Angelica: Il Principe Gualtiero Vostro Padre
Suor Angelica: Nel Silenzio Di Quei Raccoglimenti
Suor Angelica: Tutto Ho Offerto All Vergine, Sì, Tutto
Suor Angelica: La Grazie È Dicesa Dal Cielo
Carmen: Votre Toast Je Peux Vous Rendre ('Toreador's Song') Pt. 1
Karaoke Opera: Sixteen Favourite Arias and Duets
The Pearlfishers: Au Fond Du Temple Saint Pt. 1
The Pearlfishers: Au Fond Du Temple Saint Pt. 2
The Pearlfishers: Au Fond Du Temple Saint Pt. 3
Samson & Deliah: Mon coeur S'Ouvre a Ta Voix (Soflty Awakes My Heart) Pt. 1
Tales Of Hoffman: Belle Nuit, O Nuit D'amour (Barcarolle) Pt. 1
Tales Of Hoffman: Belle Nuit, O Nuit D'amour (Barcarolle) Pt. 2
Tales Of Hoffman: Belle Nuit, O Nuit D'amour (Barcarolle) Pt. 3
Madama Butterfly: Un Bel Di Vedremo (One Fine Day) Pt. 1
Madama Butterfly: Un Bel Di Vedremo (One Fine Day) Pt. 2
Il Barbiere di siviglia: Largo Al Factotum (The Barber Of Seville) Pt. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2c459463264a04456d5246cddc669b7f896936bf18119be116eedac576ae283. 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/GBLGL1252289.
La Traviata: Brindisi (Drinking Song) Pt. 1
La Boheme: Che Gelida Manina (Your Tiny Hand Is Frozen) Pt. 1
La Boheme: Quando M'en Vo (Musetta's Waltz Song) Pt. 1
Rigoletto: La Donna E Mobile (Women Are Fickle) Pt. 1
Gianna Schicchi: O Mio Babbino Caro (O My Beloved Daddy) Pt. 1
Don Giovanni: Madamina (Catalogue Aria) Pt. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8e980645f0ec35f9a4957add9154302191e2c191d894b4b940b8e828878d466. 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/GBLGL1252295.