Piero Bellugi (14 July 1924 – 10 June 2012) was an Italian orchestral conductor. Life Bellugi was born in Florence, in Tuscany, on 14 July 1924. He took a diploma in violin at the Conservatorio Lu
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 0x36b097290e32c53d0e3443871998fa70c3f9558bb7bfbb3097d04b581386c0c5. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/df462041-f7b8-4151-8e29-d7780055bfb3.json and https://artists.proofprofile.net/proofs/artist/df462041-f7b8-4151-8e29-d7780055bfb3.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
Handel: Serse (Xerxes), HWV 40 [Recorded 1962]
A Guided Tour of the Classical Era Vol. 3
Kostbarkeiten populärer Klassik (Vol. 2)
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 0x76d9e23c6a5e2eaba3a08245eb9916a6ef0309da79196c0156e6280408f34844. 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/DEA769913101 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a251a95df718846286c3d42743604c233bc12badd4db01b6c3daa801189e2c0. 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/DEA769913103 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01b4ad8e0287a8eb27a92fd6b5e5e8916bb22d7ddc299fdb8f8359481bda8a5e. 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/DEAF75105711 — a six-check JSON result.
Rundfunkorchester des Südwestfunks Kaiserslautern
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x477c600fee5fd7f6f857e5cd75e20c446fcdec5270020296e10820f6dfd692a7. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T16:23:52Z), 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/DEA769801520 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdebb53d6b3c1e97cc063601c99438deec566ddafddd03dc4a3c11b460640af73. 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/DEA769913110 — a six-check JSON result.
The Violin Concerto: Legendary Performances
Cherubini: Symphony in D Major / Opera Overtures
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66f50d374ca7fbac8aa41158056aacc1cfbfa94d1f6d86fb896d61392974eb60. 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/HKI190558901 — a six-check JSON result.
Symphony in D Major: II. Larghetto cantabile
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc123988d19c354a76fb9cfec052a15ca3dd4ab7e56059bddb0129233221ccb87. 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/HKI190558902 — a six-check JSON result.
Symphony in D Major: III. Menuetto: Allegro non tanto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04caaf8d48f9c189ec7720b9c241339309cb857321e80bc287c8c8825175753f. 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/HKI190558903 — a six-check JSON result.
Beethoven: Violin Concerto in D Major, Op. 61 & 14 Cadenzas
Telemann: Ouverture-Suite, TWV 55:a2 (Live-Auftritt in Krasnojarsk, Sibirien)
Violin Concerto No. 1 in D Major, Op. 6, MS. 21: I. Allegro maestoso
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x965f8d68803b6779600237312bbdd4d00cdc98c85cdb2f9f9e4cd5a8e044f1c0. 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/NLA507200273 — a six-check JSON result.
Violin Concerto No. 1 in D Major, Op. 6, MS. 21: III. Rondo. Allegro spirituoso
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ae026624448d264834a17260d7bfed04c62d63d0592fd6b3e8acf939021491d. 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/NLA507200275 — a six-check JSON result.
Violin Concerto No. 2 in B minor, Op. 7: 3. Rondo à la clochette, 'La campanella'
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00cab5b409a924bb04647ac9b959c374ba68375c0a4f6850bbb399538ccc324b. 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/FRZ036602730 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b445772eff05b03a96f46760948c703aa5a9a01c4202c7a6f884c91d22f7556. 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/NLA505800043 — a six-check JSON result.
24 Caprices pour violon Op. 1: Caprice No. 24
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92b4fc5ad0431772110cb2e92a90ce8e0eac173ff8ea35a8bc24b38c9ba425d8. 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/FRZ036602660 — a six-check JSON result.
Violin Concerto No. 3 in E Major, MS 50: III. Polacca. Andantino vivace
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e96e2e8422c6e9f5636f2b8e9844b42dccefdb47e20eae329e8ece04e6f01f0. Chain 2 (Bitcoin): anchored in block 957064 (2026-07-07T16:43:08Z), 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/NLA507100855 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3d57cb99d6b8dae352c1f953ca72ba4731bbfcbf49aa4f3b26a55451612390f. 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/NLA507101138 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e93c3c6d437b54546385a3669e2452eaa888eeefab55fd625df3385282576ef. 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/USX761423301 — a six-check JSON result.