thumb|Enzo Sordello in La vestale, 1954 Enzo Sordello (20 April 1927 - 15 April 2008) was an Italian operatic baritone.Cummings, David (ed.) (2000). "Sordello, Enzo", International Who's Who in Clas
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 0x4ee8f8bace18baa084220aa9a420f5c50875c8f9569bc5220527a9367b4502ba. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7682f401-f373-4e9a-8142-a6dd82d3cb22.json and https://artists.proofprofile.net/proofs/artist/7682f401-f373-4e9a-8142-a6dd82d3cb22.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
Il trovatore: Act I: Deserto sulla terra
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 0x49487097f37bc1fa465eba006a5d6e9d62edd7d05aeed5cebaeb6c3dcc220a3c. 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/ITCC51101304 — a six-check JSON result.
Il trovatore: Act III: Quale d'armi fragor poc'anzi intesi?
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x547540791fdbf836a8e503bacc6488732dbde7f44f59a81d3a1b1a40a6a3874e. 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/ITCC51101306 — a six-check JSON result.
Il trovatore: Act IV: Che! non m'inganna quel fioco lume?
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9349f18db43a00adb79ff87fcfb16334a15fd4f06b374a4df219f271a9cc0020. 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/ITCC51101307 — a six-check JSON result.
Orchestra dell'Accademia Nazionale di Santa Cecilia
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4be4afbb12444f5d3bd1d3b83487a685361beb5af11619897382560b9e920ad5. 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/GBF075940108 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21bd69e59a30f909ecac1a040cbfdf0ac6bfa57433b1225dfaad19e4220ce356. 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/GBF075940110 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55141d5f2ddd9f406a19f6d462caffbb5de74bcded0737d7809b9dcbc06472a5. Chain 2 (Bitcoin): anchored in block 960193 (2026-07-30T02:05:19Z), 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/GBF075740309 — a six-check JSON result.
Addio fiorito asil [Madama Butterfly - Act 2]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ce67851ef1eab0530e7110bb1cf528acb71133e03ab2702fbe7bb2cb39ead1b. 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/GBF075940251 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccafd23765bf468e8e0e74976ea42c21da9814ac50b468db1b5c10da02a0eed5. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/DEF056230009 — a six-check JSON result.
Puccini: Highlights from Madam Butterfly & Turandot
Madame Butterfly, Act 2: "Humming Chorus"
Orchestra of the Accademia di Santa Cecilia, Rome
Chorus Of The Accademia Di Santa Cecilia, Rome
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fee0c0445f21110e10a65cc0f3e8215237ce52883dc9709caffedac3421c8ee. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/GBLGL1053945 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70854899ef3c78460b2777626595502e6e946a96c05ca16de00d2c46eabc214c. 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/GBLGL1053954 — a six-check JSON result.
Maria Callas Live - Remastered Live Recordings 1949-1964
Renata Tebaldi Sings Puccini & Verdi Favourites
Chorus and Orchestra of the Accademia di Santa Cecilia, Rome
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7824e9fdbcc4666c8d00e2cfaee29e85b664c8c0d44b41bb50f69837cfe2194f. 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/USX761113309 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb338e63dbc01b5c964b4a81bf53a5884cfba6a8cfef5e9a9a7dfac4e7da8ed76. 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/USX761113311 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc20133c7d47380b1b3171002bf377a54ef9c35071cccae164d7d10d7b7a1f78e. 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/USX761113315 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x554a28e935385e220a3a1219c90d427374e242234079ea640030da4a6c4b95ca. Chain 2 (Bitcoin): anchored in block 957032 (2026-07-07T11:43:09Z), 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/GBAYC8800934 — a six-check JSON result.
Norma, Act II Scene 3: Qual cor tradisti, qual cor perdesti (Coro/Norma/Pollione/Oroveso)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaca2373d8b914833a5c54a61d371cdf3375b26d084e7cab3a81b1cd1909fd55. 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/GBAYC9701154 — a six-check JSON result.
Puccini: La fanciulla del West (Mono Version)
La Bohème / Act 2: "Quando m'en vo'" (Musetta's Waltz)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7df4bd00f69765f3f7a8c17fae058e48e5ba6d219c968e320f2135df1f67437. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/GBF075940115 — a six-check JSON result.
Giordano: Andrea Chénier (1955 - Milan) - Callas Live Remastered
Madama Butterfly (Complete Opera in Two Acts)
Orchestra of the Accademia di Santa Cecilia & Roma
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x341c753fcae272df7617fa8be2c9c9cdff19348842485f7c80cfc011c3274bbc. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/USX761121501 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf77b6aeaf2be4dcfa1f533b284c4b440b703b22902600e2863e18e310bfefc3. 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/USX761121502 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e0d980fa9cf6c2d684e8475d33c5edaf0906bb17b1a9b8f56eb989b53729739. 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/USX761121503 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a03d0a662cd844017b8e2346272223a8bc627816097f3f84d55c9be0f6d01d6. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/USX761121521 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd65ac84fdc589fe496fb3fb85121854f204cb3d88a59eb4bae329d178ae5b5b1. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/USX761121504 — a six-check JSON result.
Chorus and Orchestra of the Accademia di Santa Cecilia & Roma
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc22d1dd7e0087bce0740e16b00fa6168732753a24b1c4341e2486ce3a22dd55. 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/USX761121505 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe55c41d6f9d6cee0fa6796b9b390a2d3cc2a01d5d32f4f597951719ba783e8be. 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/USX761121506 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e35f26c82f69f37d3cde091da032ba4944907e8d5f189233de99720d62b14a0. 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/USX761121507 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ea0630acbcbe9f2cff75622e7c1e6093ba7367aaecfc5d212abb0521d068c35. 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/USX761121510 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70357e9b1b5cc3c7d3243a90a5e683d764ee3e87377866ffec813b91e18088b9. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/USX761121511 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x153319db79c5858e52acc64a1a98af91177164e3117e9d2c42a126742c7ae376. 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/USX761121529 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb18bb6eb7376e2c154d7bbd78b598558ce80f40e42ce8200369596150b2613b. 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/USX761121533 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84954e20a97f6edcb4a61ac98d49323f2c15b47926c6f2bec48947ff6626adda. Chain 2 (Bitcoin): anchored in block 960485 (2026-08-01T00:10:46Z), 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/USX761121516 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf231ca4d1e697579a5606d7572834deca3e13a31b7d9ed73b24a2fec8d7d6e6e. 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/USX761121517 — a six-check JSON result.
Madama Butterfly / Act 1: Sorride Vostro Onore?
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c495b665ca2ebdf5e2277ef8dd2eecc10d74a23f3a994306f02672af020c981. 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/GBF075840202 — a six-check JSON result.
Madama Butterfly / Act 1: "Dovunque al mondo"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a88c3923fc86ba07fc11d3424682b16b82e552e42fbc25d365a6e33fd4d20ad. 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/GBF075840203 — a six-check JSON result.
Madama Butterfly / Act 1: "America for ever"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x448afa83c4bec55283856113d325702743328132061b3cb9199bcfe3abb1dedb. 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/GBF075840204 — a six-check JSON result.
Madama Butterfly / Act 1: "Ecco. Son giunte al sommo del pendio"
Coro dell'Accademia Nazionale Di Santa Cecilia
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79dc90d134f5b0967066299ab02d82df369759d19087fd8f4a0984507e65d7d5. 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/GBF075840206 — a six-check JSON result.
Madama Butterfly / Act 1: "Gran ventura"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf81df10477307fe5fdf232180c435aac70be85b4af79391e73d87d63a57403b2. 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/GBF075840207 — a six-check JSON result.
Madama Butterfly / Act 1: Vieni, amor mio!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd94e80e5e455b84885f88debb2b2031579f984c3fd722369ee58183842e6fded. 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/GBF075840209 — a six-check JSON result.
Madama Butterfly / Act 1: "Ieri son salita tutta sola in segreto alla Missione"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x526ecf88bee6e0559617134230b0dfd95a510fe49be00808d3e5dab972a9cbd0. 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/GBF075840210 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc362e14e763a4d37c58f87d41ef68fbfd5c808122e203cb0c5243774e25ad4d6. 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/GBF075840211 — a six-check JSON result.
Madama Butterfly / Act 1: O Kami! O Kami!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x133eebdb23c13d5ad2601e6f5e14e66178364371b8f75fc4edd6a39b9f53859f. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/GBF075840212 — a six-check JSON result.
Madama Butterfly / Act 2: "Coro a bocca chiusa" (Humming Chorus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd339fe29cb5d7b930ceae31e62d0f0cb10714da7d183bc49fcdfe0b9f539c338. 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/GBF075840231 — a six-check JSON result.
Madama Butterfly / Act 1: "Bimba, bimba, non piangere"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe15d608d6afabdc8c6deda32129807b24703e92b8442c5dd5f1e2c37c9f73378. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/GBF075840214 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2414ba09e38864208c18c9d48b221ac16d5e52491c0fa3305194b4c2bb723c36. 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/GBF075840215 — a six-check JSON result.
Madama Butterfly / Act 1: "Vogliatemi bene"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeac1bc51b5cc2aefaaf50707ca3f74648f06b95c6ad35d657312dff8e48b9695. 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/GBF075840216 — a six-check JSON result.
Madama Butterfly / Act 2: "Un bel dì vedremo"
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Madama Butterfly / Act 2: "Con amor muore...Tu, tu? Piccolo Iddio"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f4082b91ed438856ee44bf88591b7ce64294f17ce3c8391344f645114335dd7. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/GBF075840242 — a six-check JSON result.
Spontini: La vestale (1954 - Milan) - Callas Live Remastered
Puccini: Madama Butterfly (1958 Stereo Recording)
Italo Montemezzi: L'Amore dei Tre Re [The Love of the Three Kings] (1960)
Puccini: Madame Butterfly, extraits (Mono Version)