thumb|right|Francesco Cilea, c. 1910 Francesco Cilea (; 23 July 1866 – 20 November 1950) was an Italian composer. Today he is particularly known for his operas L'arlesiana and Adriana Lecouvreur. Bio
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed788702dac3e13cd4955636a58baaee80fe483b384b6cc1fa2c8d119d6cc6bb. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9d82a878-fb91-435d-92fd-9ad340a78dbc.json and https://artists.proofprofile.net/proofs/artist/9d82a878-fb91-435d-92fd-9ad340a78dbc.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
Bizet: Carmen, WD 31, Act 1: Habanera. "L'amour est un oiseau rebelle" (Carmen, Chœur)
Orchestre du Théâtre National de l'Opéra de Paris
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 → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ca9b625bff3811a8f5e8a25941924b99bf2f37cc7b2f59e2813f6ff60d45f7f. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC1402623 — a six-check JSON result.
Bellini: Norma, Act 1: "Casta diva" (Norma, Coro)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3546f839974315a3c191919ab26d9a97b1310fdd18875e979e128c5930a3fa02. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC1401979 — a six-check JSON result.
Bellini: Norma, Act 2: "Deh! Non volerli vittime" (Coro, Norma, Pollione, Oroveso)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0278f7d532bb78751d66a1de592cdd2a93d4e832af6e9a6951df6885cfffe18. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC1400617 — a six-check JSON result.
Puccini: Gianni Schicchi: "O mio babbino caro" (Lauretta)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc504a48a044c2d93b6bb724b38927ed9e104ee9ad2d3cf5335254f7556aa5e4. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC1402624 — a six-check JSON result.
Cilea: Adriana Lecouvreur, Act 1: "Ecco, respiro appena... Io son l'umile ancella" (Adriana Lecouvreur)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c07633f86c0a47a65aea07a57f39c800eb683552362bf0479fff0e1b7573d06. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC1402631 — a six-check JSON result.
Verdi: Nabucco, Act 2: Scena. "Ben io t'invenni" - Aria. "Anch'io dischiuso un giorno" (Abigaille)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac129b83b6daaad60e358a2cc06629c00ce015c1a30a436bc1624e45fa9ac9be. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC1400484 — a six-check JSON result.
Puccini: Tosca, Act 2: "Vissi d'arte" (Tosca)
Orchestre De La Société Des Concerts Du Conservatoire
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c5b158b0e914fddfb4d862a6fe2407d113bb758d3202744e8b2f62d5f030344. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC1401040 — a six-check JSON result.
Verdi: La traviata, Act 1: "Ah fors'e lui" (Violetta)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ed692f11d7f825c36bd14d4fbdcfe465b210a5d66b8a8a372688498cacd4b6a. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC1402638 — a six-check JSON result.
Catalani: La Wally, Act 1: "Ebben? Ne andrò lontana" (Wally)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc49f8ad6a24f03ba2b0140f14650f7809fd53069c0e5f690c57d5635e7daf71b. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC1402625 — a six-check JSON result.
Bellini: La sonnambula, Act 2: "Reggimi, o buona madre" (Amina, Teresa)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64491e1e9b2b9380659cee33f007a15d6841052f507e2b2eb38a227cdefac9c5. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC1450183 — a six-check JSON result.
Giordano: Andrea Chénier, Act 3: "La mamma morta" (Maddalena)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb9cc4a5b45eae2cfdad8e0ade61e9e115b058c0d0770418d1790bc01d00c9fa. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC1402629 — a six-check JSON result.
Verdi: Rigoletto, Act 1: "Gualtier Maldè!" - "Caro nome" (Gilda, Borsa, Ceprano, Marullo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2242d1b7661595d56513ea2acbf4af3b1a792ca9f1565b7f0a7fde81ee655c74. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC1400714 — a six-check JSON result.
Saint-Saëns: Samson et Dalila, Op. 47, Act 2: "Mon cœur s'ouvre à ta voix" (Dalila)
Orchestre National Radiodiffusion Française
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a3d70db98326a16c6b111cdabcc2bee5ecd7eb6985237ed15eb925a53fc4c36. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC1402636 — a six-check JSON result.
Puccini: Madama Butterfly, Act 2: "Un bel dì vedremo" (Butterfly)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3506155e56cfa5ea1a19e5bc7ce778b49eabcb290bf56f7d66530f39a8039a55. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC1400382 — a six-check JSON result.
Puccini: Tosca, Act 1: "Ah, quegli occhi" - "Quale occhio al mondo può star di paro" (Tosca, Cavaradossi)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69370d9c9fb5fcce097a1a066938b198ffbfe7bf23129ef2c2bc27c0be993f88. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC1450090 — a six-check JSON result.
Bellini: I Puritani, Act 3: "Vieni fra queste braccia" (Elvira, Arturo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x928e2088e69f8ee2206df4c89d51579d53cf9d1a7cfecfd5fbf6bdfdf29ce30c. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC1450061 — a six-check JSON result.
Verdi: Rigoletto, Act 2: "Tutte le feste al tempio" (Rigoletto, Gilda)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc516144bd553d03d92a9e2f32fcac124641e0f3ff8ed242cce9ede2f019b2549. Chain 2 (Bitcoin): anchored in block 960404 (2026-07-31T13:06:57Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC1400724 — a six-check JSON result.
Bellini: Il pirata, Act 2: "Oh! S'io potessi" - "Col sorriso d’innocenza" (Imogene)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa8979b44deee672a7c63c365b6f9c06dfcbb124a6cf493e98107e0ea401db43. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC1400489 — a six-check JSON result.
Donizetti: Lucia di Lammermoor, Act 3: "Spargi d'amaro pianto" (Lucia, Raimondo, Coro, Enrico)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6db47d72b9acf21f1f171920780d10929fe227df1d1958fc84f9cc05058d99c4. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC1400965 — a six-check JSON result.
Cilea: Complete Piano Works II, Cello Sonata (First Version 1888)
Cilea: Adriana Lecouvreur (Excerpts) [Remastered] [Live]
Cilea: Adriana Lecouvreur (Excerpts) [Remastered 2023] [Live]
Francesco Cilea: Complete Piano Works - Vol. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22e447d473e75fbe43be7e30efb192312e48a4450ee3f20e35ddb7c16b964335. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLY331605345 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda291973881f149f7bc560f12cfb25fae9d68c7a518b019de54294bd3b87878b. Chain 2 (Bitcoin): anchored in block 960183 (2026-07-30T01:10:20Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLY331605356 — a six-check JSON result.
Francesco Ciléa: Grandes Operas. Adriana Lecouvreur (Volumen I)
The Art Of Beniamino Gigli, Vol. 1 1918-1946
La Divina: Oh Giusto Cielo! Ardon Gli Incensi (Mad Scene)
Orchestra del Maggio Musicale Fiorentino
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc88b91e109267f5ddb835239fe16799bda9e03f5f9bc00d0a5c10b513a3f8a51. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBLGL0910611 — a six-check JSON result.
Adriana Lecouvreur / Act 1: "Del sultano Amuratte..." - Io son l'umile ancella
Orchestra dell'Accademia Nazionale di Santa Cecilia
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8881c050950a78a0e081875349859ca5ce9b0b75370492e2bc4d4da45ee77f20. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF076141504 — a six-check JSON result.
Adriana Lecouvreur / Act 2: Acerba voluttà, dolve tortura
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x490d967f9ba8a55c2889a37caf9a831baa03141819b5b2380ce7a4f1c1dc71fb. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF076141510 — a six-check JSON result.
Cilea: L'arlesiana Dramma lirico in tre atti di Leopoldo Marenco
From the Heart: Italian Arias and Neopolitan Songs
Above the Mists - Echoes of the Mountain
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf987aca6b2b32e293b9cf8799f43f812e0cacd4d9290c3943d2d6ac36d4fb12a. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF056701330 — a six-check JSON result.
Adriana Lecouvreur / Act II: "Acerba voluttà, dolce tortura ... O vagabonda stella d'Oriente"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd801283d5e294fc8631f437ea655d11ca35fe6b5f88ef30c5b6277092b8441a7. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEN961600420 — a six-check JSON result.
L'Arlesiana / Act 2: "E la solita storia" (Lamento di Federico) - Live
The Three Tenors - In Concert, Rome 1990 (And Selected Highlights)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13461cd3cd3724b9a41f54069a1fff58b1129349b8bc86d89295ee8f0570fa4c. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF079040301 — a six-check JSON result.
Adriana Lecouvreur / Act I: "Ecco: respiro appena ... Io son l'umile ancella"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57429f729984461e1a70c6667187a5cd1e38fafaa1719d73828d1d53670a6d4f. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEN961600460 — a six-check JSON result.
L'arlesiana: Act II: E la solita storia del pastore (Lamento di Federico)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac0165abbacb40fdc17375b4721b05964a99098d5015ec271dbc676062baaeb7. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USBC17100106 — a six-check JSON result.
L'Arlesiana / Act 2: "E'la solita storia" (Il lamento di Federico) - Live In London / 1982
Luciano Pavarotti - Gala Concert, Royal Albert Hall
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5c675a97f8aa9736786b181cde824368e5375a7a15c8633ab40bea7b9361bb0. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF078240407 — a six-check JSON result.
L'arlesiana / Act 2: E la solita storia (Lamento di Federico)
Orchestra Sinfonica di Milano Giuseppe Verdi
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53c9176442438f7fd08ea8eea097724790671c3ce990cdc943f5fdb0af6c5e0e. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBBBA0342640 — a six-check JSON result.