Arturo Sacchetti (Santhià, near Vercelli, 9 January 1941) is an Italian organist, conductor and musicologist. He worked as artistic director at the Radio Vatican. He studied at the Conservatorio di
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 0xb016a4088d11a02ffba0ab0566277ff6dcb07c04cf886f3321c27f94175f3e4f. Chain 2 (Bitcoin): anchored in block 954693 (2026-06-21T11:50:32Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e7bdff21-ad20-47ee-bf12-8734fb3f7425.json and https://artists.proofprofile.net/proofs/artist/e7bdff21-ad20-47ee-bf12-8734fb3f7425.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
Bossi: Organ Concerto in B-Flat Minor, Fantasia sinfonica, Sinfonica-overture in E Major & Siciliana e giga (Live)
Perosi: Le 7 parole di N.S. Gesù Cristo sulla croce (Live)
Perosi: La passione di Cristo secondo San Marco
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 0x29cf743515bd13a398032d83fcdd85aa2e395b8c6868c075c93ddca317470c71. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITS611419902 — a six-check JSON result.
Concerto in A Major: I. Allegro moderato
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x365757cd8e9f12607f51181debf7af73e476a2a4b0aea9bdba168ca708d5ee3c. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/ITS611419911 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18aa9effcc428857b8a8abd26b0ea471c3d253e0578d2184260cd027c39ecee2. Chain 2 (Bitcoin): anchored in block 960222 (2026-07-30T07:48:45Z), 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/ITS611419912 — a six-check JSON result.
Concerto in A Major: III. Rondò. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc06b83f5665e7bf047c237775acb154f5ddab327401dd42d6f66bcb360401db0. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/ITS611419913 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x308ee3fda071f1b49f3126d5270c5f9034cc8837bd031282c2e6f02dc715ce0b. 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/ITS611419915 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a6f9fe866085db4eaf4d59fbeb442c6620743f89a53e947410e3d49c34e3a3f. 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/ITS611419916 — a six-check JSON result.
Perosi: Messe di Requiem & In patris memoriam
Perosi: Concerto per solo di violino & Concerto No. 2
Perosi: La risurrezione di Lazzaro (Live)
Perosi: In diebus tribulationis & Dormi, non piangere
Perosi: Piano Concerto in A Minor & Scherzo in A Major
Perosi: Missa pontificals & Messa a due voci dispari
Perosi: L'entrata di Cristo in Gerusalemme
Perosi: Adagio, Clarinet Concerto & Suite No. 6, "Milano"
L'organo nei secoli: La trascrizione organistica nell'ottocento in Italia, vol. 2
Weihnachten: Schone Musik fur Orgel, vol. 2
Organ History: Belgium, Danemark, Netherlands
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f732ee30a8646debc18afaa400f12ee3832a3731809648f5138e824e7c8c311. 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/GBCRW9839301 — a six-check JSON result.
Organ History - The Organ Transcription in France
Organ History - Reger and Karg-Elert Transcriptions
Organ History: Erik Satie & French Rarities Of The XXth Century
Organ History: The Italian School Between 19th & 20th Century