Sesto Bruscantini (10 December 1919 – 4 May 2003) was an Italian baritone, one of the greatest buffo singers of the post-war era, especially renowned in Mozart and Rossini. Biography and career Brusc
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 0xb182a7cf5815c1b18e63c6d4d8446f9f988185e0e99656bb1cd077cb926ef191. 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/b206b750-ba36-4919-b691-7cf31d086f93.json and https://artists.proofprofile.net/proofs/artist/b206b750-ba36-4919-b691-7cf31d086f93.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
Pavarotti – The Opera Collection 6: Puccini: La bohème (Live in Rome, 1969)
La bohème, SC 67, Act I: Questo mar rosso - Live in Rome, 1969
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 0x7d6d6ef75e4c12fddcb8204aa49c862e8fbd602f50dc8c4f5edaff4f3606b42a. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/GBF076942701 — a six-check JSON result.
La bohème, SC 67, Act I: Che gelida manina - Live in Rome, 1969
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0be3e3ce96a29aa6968003faf09e56041e69024f5d8f5657527a383be0e0c7c0. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/GBF076942705 — a six-check JSON result.
Pavarotti – The Opera Collection 5: Bellini: I puritani (Live in Rome, 1969)
I puritani, Act III: Son salvo, alfin son salvo - Live in Rome, 1969
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8919fe07f229b3b0d979a5c33edf87b6ff69e0fbb8262ecee12607d5d899c6b2. 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/GBF072340321 — a six-check JSON result.
I puritani, Act III: Vieni, vieni fra questa braccia - Live in Rome, 1969
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e616dbee43d02816dfe39561b8addf2914bf11bedecf5f9b21e750c5aaab65d. 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/GBF072340324 — a six-check JSON result.
I puritani, Act III: Credeasi, misera! - Live in Rome, 1969
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ab7cdb8090ca0358b8d9b47bb23814bcdd64059c7b61aeb0abeff142b8a0d4c. 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/GBF072340325 — a six-check JSON result.
Rossini: Il turco in Italia [Recorded 1958]
Highlights from The Daughter of the Regiment
La Figlia del Reggimento (Gaetano Donizetti)
Paisiello: Il re Teodoro in Venezia (Recorded 1962)
Cimarosa: Il maestro di cappella (Revised by Maffeo Zanon, Mono Version)
Pergolesi: La serva padrona - Cimarosa: Il maestro di cappella
Il mito dell'opera: Werther (Sung in Italian) [Live]
Donizetti: Don Pasquale (1952 Recording)
Weber: Der Freischütz, Op. 77, J. 277 (Sung in Italian) [Live]
Domenico Cimarosa: Il Maestro di Cappella. Sesto Bruscantini
Rossini: Il barbiere di Siviglia: Sinfonia
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3833fc90562867d4b914ec799aa75f1a37af64f7caf3beae18d34b0cff9d5490. 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/GBAYC0200350 — a six-check JSON result.
Rossini: Il barbiere di Siviglia, Act 1: "Piano, pianissimo, senza parlar" (Fiorello, Coro, Conte)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6de9a501dca2979f4feac38d4019a990997a136e41dee8765234d723fc3256ce. 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/GBAYC0200353 — a six-check JSON result.
Rossini: Il barbiere di Siviglia, Act 1: "Ecco ridente in cielo" (Conte)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x050cc124b2248698de9170b08b290f1136fb5bc3960d5fc5c8acc2314fbe8acc. 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/GBAYC0200354 — a six-check JSON result.
Rossini: Il barbiere di Siviglia, Act 1: "Mille grazie, mio signore" (Conte, Fiorello, Coro)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf25d0682d72c27c016337c16a52aa4e7b47a5bd833eb67b770b28e9e86146157. 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/GBAYC0200356 — a six-check JSON result.
Rossini: Il barbiere di Siviglia, Act 1: La ran la le ra" - "Largo al factotum" (Figaro)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72c5d62dc794a0b6c3a62276ef691b2dc9f9291a3ebf708db744da1be541e781. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/GBAYC0200358 — a six-check JSON result.
Rossini: Il barbiere di Siviglia, Act 1: "Fredda ed immobile" (Rosina, Conte, Bartolo, Figaro, Basilio, Berta)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa443c8e2e70ffc0530725ca4775ac1cba699091b8e8ed93ec4b33cffecda9ead. 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/GBAYC0200386 — a six-check JSON result.
Rossini: Il barbiere di Siviglia, Act 1: "Ma signor...ma un dottor (Bartolo, Coro, Berta, Basilio, Rosina, Conte, Figaro)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed3e6f9134aaf7bc1187895b874120e2cf8ab88283420f21b854c0efb3733c75. 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/GBAYC0200387 — a six-check JSON result.
Rossini: Il barbiere di Siviglia, Act 1: "Una voce poco fa" (Rosina)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9c516e52320aaccf6ac6af8aa3f76877ab215bfae02c73d096fb9844507065e. 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/GBAYC0200369 — a six-check JSON result.
Rossini: Il barbiere di Siviglia, Act 2: "Orsù, Signor Don Bartolo" (Figaro, Bartolo, Conte, Rosina)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x326a361c360c3d93ee2674d4ce5503f1ec8f6ca574db60eed682ee8f1fafa8a4. 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/GBAYC0200399 — a six-check JSON result.
Giovanni Battista Pergolesi: La Serva Padrona (1950)
Mozart: Highlights from The Marriage of Figaro
Mozart: Le nozze di Figaro & Symphonie No. 40 (Mono Version)