Mario Filippeschi
type: MusicGroup
genre: opera
description: thumb|Mario Filippeschi (photo with 1948 dedication) Mario Filippeschi (7 June 1907 in Montefoscoli – 25 December 1979 in Florence) was an Italian tenor, particularly associated with the Italian reper
popularity: 8
followers: 557
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  value: 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
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  date published: 2026-06-16T20:07:57Z
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album: Donizetti: Lucia di Lammermoor (Live Recordings 1957)
  type: MusicAlbum
  date published: 2014-09-01
album: Verdi: Aida
  type: MusicAlbum
  date published: 2013-05-10
album: Bellini: I puritani (Recorded 1952)
  type: MusicAlbum
  date published: 2015-02-01
album: William Tell
  type: MusicAlbum
  date published: 2000-01-01
track: Bellini: Norma, Act 2: "Deh! Non volerli vittime" (Coro, Norma, Pollione, Oroveso)
track: Bellini: Norma, Act 1: "Svanir le voci!" (Pollione, Flavio)

Bellini: Norma, Act 2: "Deh! Non volerli vittime" (Coro, Norma, Pollione, Oroveso)
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duration: PT4M54S
duration ms: 294658
explicit: false
by artist: Vincenzo Bellini
by artist: Maria Callas
by artist: Coro Del Teatro Alla Scala Di Milano
by artist: Mario Filippeschi
by artist: Nicola Rossi-Lemeni
by artist: Tullio Serafin
by artist: Orchestra Del Teatro Alla Scala, Milano
in album: Bellini: Norma
  type: MusicAlbum
  date published: 2023-01-20
popularity: 2
genre: opera
isrc code: GBAYC1400617
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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  value: 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
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T08:56:20Z
audio: Bellini: Norma, Act 2: "Deh! Non volerli vittime" (Coro, Norma, Pollione, Oroveso)
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    value: Minor

Bellini: Norma, Act 1: "Svanir le voci!" (Pollione, Flavio)
type: MusicRecording
duration: PT2M49S
duration ms: 169000
explicit: false
by artist: Vincenzo Bellini
by artist: Tullio Serafin
by artist: Mario Filippeschi
by artist: Paolo Caroli
by artist: Orchestra Del Teatro Alla Scala, Milano
in album: Bellini: Norma
  type: MusicAlbum
  date published: 2023-01-20
popularity: 1
genre: opera
subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d25134361eb9a2d0577817ec58c6c2627563a99867b11b9ea741f61ff32fa82. 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/GBAYC1400576.
  date published: 2026-07-31T19:53:13Z
audio: Bellini: Norma, Act 1: "Svanir le voci!" (Pollione, Flavio)
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additional property: OTSVerifyInstructions
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  value: 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