Ezio Fortunato Pinza (May 18, 1892May 9, 1957) was an Italian opera singer. Pinza possessed a rich, smooth and sonorous voice, with a flexibility unusual for a bass. He spent 22 seasons at New York'
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 0xafea9654f2d12a34af981bbfa5e64e991133e3aeedf7af383ec63da8df9691c6. Chain 2 (Bitcoin): anchored in block 953626 (2026-06-14T11:41:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2dc3dfab-5c46-4b36-9ffd-428557ae4fa2.json and https://artists.proofprofile.net/proofs/artist/2dc3dfab-5c46-4b36-9ffd-428557ae4fa2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Beniamino Gigli Collection, Vol. 5: True Belcanto in Opera and Songs (Recordings 1927-1949) [2014 Digital Remaster]
Three of a Kind: Ezio Pinza, Beniamino Gigli, Richard Tauber
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 0x01b0f927dfe0a974c789138a3cf3e34a73949cdb368e83dbbc6f9a5064f3d464. Chain 2 (Bitcoin): anchored in block 960298 (2026-07-30T19:26:00Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ATP130194514.
Don Giovanni live 04.03.1943 conducted by Paul Breisach
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c3bba7106ba5b5edacc7022b970503e6afa8353bd32c0f665fca71d0b26a117. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/PL6A22478681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6552e0b563eb3035610952df6262cf2c2315f3b1fd34e8ef331c1199eec89d10. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PL0B62417249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55ab4fcaac60cb3e20f95221c0a78a15a24cd61dbefb05a6ebd0e8a7e719932d. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PL0B62417251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8713523adb1d45ed3b2578ce1dc60313d1bf307f0be6219cf84a2060e99be05. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PL0B62417257.
Missa Solemnis conducted by Arturo Toscanini
Lebendige Vergangenheit - Ezio Pinza (Vol.5)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c89d8d8e2d8a480e0cc407f879d8b96a75ec4ea32748eb3ce981d74fb0894f8. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ATP130599714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dc9ae4c35ccfb2053f5dcd6f2be74d2f3061c1c0833000ae71803e52c3d7876. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/ATP130599719.
Lebendige Vergangenheit - Ezio Pinza (Vol. 4)
Lebendige Vergangenheit - Four Famous Basses of the Past
Lebendige Vergangenheit - Ezio Pinza (Vol. 2)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1835ae51af26e93a14fa9101cab1485b63f87f5d4cd259dcaf9b936fd685ac45. 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/ATP139408520.
Pinza, Ezio: Some Enchanted Evening (1949-1954)
Rodgers: South Pacific (Original Broadway Cast) (1949)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a48915a68d316f09cc30d7974dc668c80eeaf822f003fc22e9cdb4010dc9d67. 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/HKI190423401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c3b9cbc343f00f511b5f1e1e6070db075854d9666e49edf717ff464265bbc4f. 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/HKI190423402.
South Pacific: Some Enchanted Evening (Original Broadway Cast)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x602eb7149f9e9dc1cbde58854268b48142052c530f99d3d63ad76d0883d3910a. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI190423405.
South Pacific: I'm Gonna Wash That Man Right Out of My Hair (Original Broadway Cast)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5337ce45f660a3b165a286ddb90e90577dd894a8c228f45d99ebae34133083e9. 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/HKI190423409.
South Pacific: There Is Nothing Like a Dame
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f8e4478d56fbb82c87bc576dff12e9b22881aca52c930898686ee2396d6d0b8. 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/HKI190423419.
Verdi & Bellini & Wagner: Great Voices of the Century - Baritones & Basses Vol. 4