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 0xfe5e9ae6b4eac28f4084c38687577d0f24d4bc98372d4b88611bfc32e90705c1. Chain 2 (Bitcoin): anchored in block 954631 (2026-06-21T02:46:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d13fa64e-c4de-4662-8ec3-c22354c83331.json and https://artists.proofprofile.net/proofs/artist/d13fa64e-c4de-4662-8ec3-c22354c83331.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
50 Years of Hungaraton (1951-2000): Singers
The Queen of Spades, Op. 68, Act II: Ya vas lyublyu, bezmerno
Aida: Aida, Act IV: Presago il core della tua condanna
A Kekszakallu herceg vara (Bluebeard's Castle), BB 62: Varam sotet tove reszket
Il barbiere di Siviglia (The Barber of Seville), Act I: Aria: La calunnia e un venticello
Manon Lescaut, Act II: Duet: Ah, en leszek a legszebb
La traviata: La Traviata, Act II: Aria: Di Provenza il mar, il suol
Faust: Faust, Act II: Il se fait tard, Adieu!
Juditha triumphans devicta Holofernes barbarie, RV 644: Aria: Agitata infido flatu diu
Il trovatore, Act IV: Mira, di acerbe lagrime
Bank ban, Act I: Drinking Song: Bordalt, Petur … Ha ferfilelkedet (Well then … If ever two dark eyes)
I Lombardi all prima crociata, Act IV: In cielo benedetto - Qual prodigo - Non fu sogno
Bank ban: Act II: Aria: Olj meg engemet, Bank (Bank, I beg you kill me)
Szekely fono (The Transylvanian Spinning Room): Bizony csak meghalok (I am dying surely, mother)
Bank ban: Act II: Duet: Bank ban! Te itt? (Bank ban! You here?)
Die Zauberflote (The Magic Flute), K. 620, Act II: Duet: Pa, pa, pa Papageno (Sung in Hungarian)
Rigoletto, Act III: Bella figlia dell'amore
La forza del destino, Act II: Or siam soli
Macbeth (Live): Act IV: Perfidi! All'anglo contra me v'unite!
Szekely fono (The Transylvanian Spinning Room): El kene indulni (Wise it were and timely)
Die Entfuhrung aus dem Serail, K. 384: Act I: Aria: Hier soll ich dich denn sehen
Falstaff, Act II: Finale secondo: Siete gia qui?
Hary Janos: Adventure 1: Drinking Song: O, mely sok hal
Faust: Faust, Act II: Cavatina: Salut! demeure chaste et pure
La Gioconda, Act II: Romance: Ho il cor … Stella del marinar
Hary Janos: Adventure 4: Duet with Chorus: Gyujtottam gyertyat
L'infedelta delusa, Hob.XXVIII:5, Act II: Finale: Nel mille settecento
Il Pastor fido, HWV 8, Act II: Aria: Caro Amor
La traviata, Act I: Libiamo ne' lieti calici
L'Olimpiade, RV 725, Act II: Aria: Se tu sprezzar pretendi
Floridante, HWV 14: Act I: Duet: Ah, mia cara
Turandot, Act III: Tu che guardi le stelle
Floridante, HWV 14: Act II: Duet: Fuor di periglio
Die Zauberflote (The Magic Flute), K. 620, Act I: Wie stark ist nicht dein Zauberton!
Hary Janos: Adventure 3: Song: Hagyj beket, viaskodo
Juditha triumphans devicta Holofernes barbarie, RV 644, Part I: Aria: Sede, o cara
Lohengrin, Act III: In fernem Land, unnahbar eu'ren Schritten
Moise et Pharaon (Moses and Pharaoh), Act II: Quintet: Celeste man placata!
Terpsicore, HWV 8b: Il Pastor Fido, HWV 8b: Aria: Hai tanto rapido
Mefistofele, Act I: The Pact: Dai campi, dai prati
Nuits d'Ete a Pausilippe: No. 8. L'aurora
Lucia di Lammermoor, Act II: Chi mi frena in tal momento? (Sung in Hungarian)
Die Zauberflote (The Magic Flute), K. 620, Act II: O Isis und Osiris
Tosca: Tosca, Act I: Tre sbirri, una carrozza
Don Giovanni, K. 527, Act II: Aria: Vedrai, carino
Adam: Le postillon de Lonjumeau: Ouverture
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 0x67c220fe6c782714ab230c8026b104e8751db3e695ccfb618ca410b44cfd1099. 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/FRZ118503253.
Adam: Le postillon de Lonjumeau, Act 1: Chœur. "Le joli mariage !" (Chœur, Chapelou, Madeleine)
Adam: Le postillon de Lonjumeau, Act 1: Duo. "Quoi, tous les deux !" (Chapelou, Madeleine)
Adam: Le postillon de Lonjumeau, Act 1: Morceau d'ensemble. "Jeunes époux, voici l'heure fortunée" (Chœur, Chapelou)
Adam: Le postillon de Lonjumeau, Act 1: Ronde du postillon. ''Mes amis, écoutez l'histoire'' (Chapelou, Le Marquis, Chœur)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dd6d47705ac848109cdfb04f74e07390e9693205b4d6b4c425017b485e94709. 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/FRZ118503259.
Adam: Le postillon de Lonjumeau, Act 1: Finale. "À mes désirs il faut te rendre" (Le Marquis, Chapelou, Biju, Madeleine, Chœur)
Adam: Le postillon de Lonjumeau, Act 2: Entracte
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4923b8a48949277c95b2c9b524b2c4846c46885fe45736259f29d6fdf34e2aa. 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/FRZ118503262.
Adam: Le postillon de Lonjumeau, Act 2: Air. "Je vais donc le revoir" (Madame de Latour)
Adam: Le postillon de Lonjumeau, Act 2: Morceau d'ensemble et chœur. "Ah, quel tourment !" (Chœur, Saint-Phar, Alcindor, Le Marquis)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda2515839afb6dec7240989fbd127f4bedfc8171c538e94665b06d66100e18fc. 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/FRZ118503265.
Adam: Le postillon de Lonjumeau, Act 2: Romance. "Assis au pied d'un hêtre" (Saint-Phar, Le Marquis, Alcindor)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10b5973750f4fa9ac203a8b429629a4a24a5be01b54b99e58750858885090a8c. 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/FRZ118503266.
Adam: Le postillon de Lonjumeau, Act 2: Romance et couplets. "Assis au pied d'un hêtre" (Saint-Phar, Le Marquis, Alcindor, Chœur)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46ad37c4077ddc941c43dcea61b0fea93eac645930ce58952413c9c62849f6f3. 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/FRZ118503267.
Adam: Le postillon de Lonjumeau, Act 2: Air. "Oui, des choristes du théâtre" (Alcindor)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9e15402a711cfc07187906a1add799e71e4182bc1637bf35636e5299dc6a289. 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/FRZ118503269.
Adam: Le postillon de Lonjumeau, Act 2: Duo. "Grâce au hasard" (Saint-Phar, Madame de Latour)
Adam: Le postillon de Lonjumeau, Act 2: Finale. "Ah, quelle étonnante nouvelle !" (Saint-Phar, Le Marquis, Madame de Latour, Chœur)
Adam: Le postillon de Lonjumeau, Act 3: Entracte
Adam: Le postillon de Lonjumeau, Act 3: Chœur. "Du vrai bonheur" (Le Marquis, Saint-Phar, Madame de Latour, Chœur)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0b1512613882b9062bd02a8545834d5f7b2037c7b702ad9018410ff274e09be. 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/FRZ118503276.
Adam: Le postillon de Lonjumeau, Act 3: Grand air. "À la noblesse je m'allie" (Saint-Phar)
Adam: Le postillon de Lonjumeau, Act 3: Trio. "Pendu !" (Saint-Phar, Bourdon, Alcindor)
Adam: Le postillon de Lonjumeau, Act 3: Duo et final. "À ma douleur soyez sensible" (Madame de Latour, Saint-Phar, Le Marquis, Bourdon, Alcindor, Chœur)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e369b596cec5288e8dbb722090e75f90ff361860d2fa0ca1c0261594c4f3c54. 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/FRZ118503282.