thumb|Nino Sanzogno Nino Sanzogno (13 April 1911 – 4 May 1983) was an Italian conductor and composer. Life Sanzogno was born in Venice, where he studied the violin with Hermann Scherchen and composi
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc35d09300ecad20d976ae09ed00a15d7545c7b6b08854220f811342c89163ac. Chain 2 (Bitcoin): anchored in block 953657 (2026-06-14T16:43:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/50469f6b-cec9-440f-8c43-d9bd16d59876.json and https://artists.proofprofile.net/proofs/artist/50469f6b-cec9-440f-8c43-d9bd16d59876.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Verdi: Un ballo in maschera (Grand Théâtre de Genève, 8 mai 1946)
Il mito dell'opera: Un ballo in Maschera (Live Recordings 1946)
La fanciulla del West: Act II: Una parola sola
Orchestra Sinfonica Nazionale della RAI di Torino
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63663326eb9841fbd5651bb7beb3ac66ed377c1990bf3a32f8cee0057fefb3a4. 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/USB8U1520852.
La fanciulla del West: Act II: Or son sei mesi
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa393aac5b7fad93a62958195c91da01da0bee32810f43eedc6b32e2e9d011e8b. 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/USB8U1520853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3131e2aa2eb41f10e63bbd34eb659eca312cae3021d646d8c851ff0cb4bc7142. 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/USB8U1520883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c1e6bfa98270f6b7ac4709d357ada68dc892b3cc3d6f432ab170bc83481b5e7. 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/USB8U1520855.
Adriana Lecouvreur: Act I: La dolcissima effige
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc2f09ac9f59bb3b3b8e9d56897e77d6d73d714f0c8800053ace568cf989670d. 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/USB8U1520856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48385908c61e912783f6228477ac1e696eaf628b2fb7439da89abc643fb5aeaf. 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/USB8U1520886.
La favorita, Act I: Una vergine, un'angel di Dio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42014b3eeae5cd93bb1c7e7cb4782bf1d60c0f51e77692ab3fa4c130249f07c2. 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/USB8U1520858.
I Lombardi alla prima crociata, Act II: La mia letizia infondere
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec05376a1a4300702853933e253097e02fa68c449e47e351247caa919f6ee9a2. 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/USB8U1520864.
Un ballo in maschera: Act III: Ma se m'e forza perderti
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa34a07ff75b32d595110ca81da51cc3ca1e881da45787b94d4be66396588253c. 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/USB8U1520867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77f910d7902922cd20ff87b99654fc1f0e2eb41a94816b53603665793e537c81. 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/USB8U1520868.
La forza del destino: Act III: La vita e inferno all'infelice
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eef3ef91038336534c79e5df1208266a9d43afa648b44ef72a4a3b1998553a8. 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/USB8U1520869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x959e92cff91cadaf243f47c746308463a568c9de2ee152b9f68820f71e0fe9c9. 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/USB8U1520877.
Ettore Bastianini: A Discographic Career (Recorded 1955-1962)
Il barbiere di Siviglia: Act I: Largo al factotum della citta
Orchestra del Maggio Musicale Fiorentino
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x852fe3ed80b5f28d7000ff1568b5d53084a2c6ad2aedab4ac28b63b2835922bf. 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/ITCC51101601.
Un ballo in maschera: Act I: Alla vita che t'arride
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x158ea359d2ebbd04232ed4b64d0d60a4bda960847521651fddbfd0f844b435ac. 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/ITCC51101625.
Il barbiere di Siviglia: Act I: All'idea di quel metallo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b5b04121742e078f559213743ba9a8ca3a501cf771d6eb242f7934ecb2c84b1. 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/ITCC51101602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe931513285086652057fcd890eb4fa82643b225ef62304b5a76f60b24acc9203. 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/ITCC51101612.
Rigoletto: Act II: Cortigiani, vil razza dannata
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe08df26b2590f427eff2e0218c8e1775f0dd0598aaa0f7c9292a81b3758338ad. 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/ITCC51101613.
Il trovatore: Act IV: Udiste? Come albeggi - Qual voce!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0c4cfe42addcbd937508f70d680f1bd986edb0e490216744318b820c88d27bc. 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/ITCC51101619.
Tchaikovsky: Eugene Onegin, Op. 24, TH 5 (Sung in Italian)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x631368d816089a55ae3dd4f4d96528ce9eac4783f498ff6dc2731bf19d1c3772. 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/ITCC51100722.
Martha Mödl Sings Händel, Purcell, Gluck, Mussorgsky and Others
Gluck: Iphigenia auf Tauris (Sung in Italian) [Recorded Live 1957]
L'elisir d'amore (The Elixir of Love), Act II: Una furtiva lagrima
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2178f2faf73515cbc8d2f35fc4e821bb2d4ddc39f5acd51747c6071762187a9b. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/USB8U1518983.
Tchaikovsky: Eugene Onegin (Sung in Italian) (1953)
Franco Corelli: Power and Beauty, Vol. 9 (1954-1959)
The Complete Italian Radio Recordings (Live)
Piano Concertos (Haydn, Mozart, Ravel, Beethoven & Schumann)
Haydn, Mozart, Beethoven, Schumann & Ravel: Piano Concertos (Live)
Il mito dell'opera: Mario Filippeschi, Vol. 3 (Live)
Cherubini: Ali-Baba, ou Les quarante voleurs (1963)
Claudio Monteverdi: L'incoronazione Di Poppea