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 0x5af48ec1cbda6bff3db448880416bbd198e8ef7c332bd33026a91b2d8077888f. Chain 2 (Bitcoin): anchored in block 954046 (2026-06-17T04:53:03Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/407b3e77-8700-4fa1-9e42-e9ee0c175779.json and https://artists.proofprofile.net/proofs/artist/407b3e77-8700-4fa1-9e42-e9ee0c175779.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
La traviata, Act I: Act I Scene 1: Prelude
La traviata, Act II: Act II Scene 2: Avrem lieta maschere la notte (Flora)
La traviata, Act I: Act I Scene 1: Dell'invito trascorsa e gia l'ora (Chorus)
La traviata, Act II: Act II Scene 2: Noi siamo zingarelle (Chorus)
La traviata, Act I: Act I Scene 1: Libiamo ne' lieti calici (Alfredo)
La traviata, Act II: Act II Scene 2: Di Madride noi siam mattadori (Chorus)
La traviata, Act I: Act I Scene 1: Che e cio? (Chorus)
La traviata, Act II: Act II Scene 2: Alfredo! Voi! (Chorus)
La traviata, Act I: Act I Scene 1: Un di, felice, eterea (Alfredo)
La traviata, Act II: Act II Scene 2: Invitato a qui seguirmi (Violetta)
La traviata, Act I: Act I Scene 1: Ebben? Che diavol fate? (Gastone)
La traviata, Act II: Act II Scene 2: Ogni suo aver tal femmina (Alfredo)
La traviata, Act I: Act I Scene 1: E' strano! E' strano! (Violetta)
La traviata, Act II: Act II Scene 2: Di sprezzo degno se stesso rende (Germont)
La traviata, Act I: Act I Scene 1: Ah, fors' e lui (Violetta)
La traviata, Act II: Act II Scene 2: Alfredo, Alfredo, di questo core (Violetta)
La traviata, Act I: Act I Scene 1: Follie! Follie! (Violetta)
La traviata, Act III: Act III Scene 1: Prelude
La traviata, Act I: Act I Scene 1: Sempre libera (Violetta)
La traviata, Act III: Act III Scene 1: Annina? … Comandate? (Violetta)
La traviata, Act II: Act II Scene 1: Lunge da lei (Alfredo)
La traviata, Act III: Act III Scene 1: Teneste la promessa (Violetta)
La traviata, Act II: Act II Scene 1: De' miei bollenti spiriti (Alfredo)
La traviata, Act III: Act III Scene 1: Addio, del passato (Violetta)
La traviata, Act II: Act II Scene 1: Annina, donde vieni? (Alfredo)
La traviata, Act III: Act III Scene 1: Largo al quadrupede (Chorus)
La traviata, Act II: Act II Scene 1: Madamigella Valery? (Germont)
La traviata, Act III: Act III Scene 1: Parigi, o cara (Alfredo)
La traviata, Act II: Act II Scene 1: Pura siccome un angelo (Germont)
La traviata, Act III: Act III Scene 1: Ah, non piu (Violetta)
La traviata, Act II: Act II Scene 1: Non sapete quale affetto (Violetta)
La traviata, Act III: Act III Scene 1: Ah! Gran Dio! (Violetta)
La traviata, Act II: Act II Scene 1: Un di, quando le veneri (Germont)
La traviata, Act III: Act III Scene 1: Ah, Violetta (Germont)
La traviata, Act II: Act II Scene 1: Ah! Dite alla giovine (Violetta)
La traviata, Act III: Act III Scene 1: Prendi, quest' e l'immagine (Violetta)
La traviata, Act II: Act II Scene 1: Imponete … Non amarlo ditegli (Violetta)
La traviata, Act III: Act III Scene 1: Cessarono gli spasimi (Violetta)
La traviata, Act II: Act II Scene 1: Morro! La mia memoria (Violetta)
Le nozze di Figaro (The Marriage of Figaro), K. 492, Act IV: Recitative and Aria: Giunse al fin il momento…
Orchestra Sinfonica Nazionale della RAI di Roma
La traviata, Act II: Act II Scene 1: Dammi tu forza, o cielo! (Violetta)
La sonnambula, Act II: Ah, non credea mirarti
La traviata, Act II: Act II Scene 1: Amami, Alfredo! (Violetta)
La fille du regiment, Act II: Deciso e dunque
Orchestra Sinfonica Nazionale della RAI di Milano
La traviata, Act II: Act II Scene 1: Ah, vive sol quel core all’ amor mio! (Alfredo)
Manon: Act I: Voyons, Manon, plus de chimeres
La traviata, Act II: Act II Scene 1: Di Provenza il mar (Germont)
Manon: Act II: Je ne suis que faiblesse - Adieu, notre petite table
Verdi: La Traviata: Un di, felice, eterea - Act One
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 0x3c633a87fc3c2e493198161a174ca4427abe15d333deb3b71b6c7ee894c9ed68. 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/US89R0699358.
Verdi: La Traviata: Libiamo ne'lieti calici - Act One
Verdi: La Traviata: Dell'invito trascorsa e gia l'ora? - Act One
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x901e27d1d62656ba03fe9e5d775b8e8c07dc932f6610e864d44fb476f1fa1467. 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/US89R0699355.
Verdi: La Traviata: Sempre libera - Act One
Verdi: La Traviata: Addio del passato - Act Three
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba418c7eae09ee032586d0b529fd5a1d0ec68621fd817c74cd434caa98d4924b. 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/US89R0699390.
Verdi: La Traviata: Che e cio? - Act One
Verdi: La Traviata: Ebben? Che diavol fate? - Act One
Verdi: La Traviata: Si ridesta in ciel l'aurora - Act One
Verdi: La Traviata: E strano!... - Act One
Verdi: La Traviata: Ah, fors'e lui - Act One
Verdi: La Traviata: Follie! Follie! Delirio vano e questo! - Act One
Verdi: La Traviata: Lunge da lei... - Act Two
Verdi: La Traviata: De' miei bollenti spiriti - Act Two
Verdi: La Traviata: Annina, donde vieni? - Act Two
Verdi: La Traviata: Pura siccome un angelo - Act Two
Verdi: La Traviata: Non sapete quale affetto - Act Two
Verdi: La Traviata: Un di, quando le veneri - Act Two
Verdi: La Traviata: Ah, dite alla giovine - Act Two