Christopher Macchio
type: MusicGroup
genre: opera
description: Christopher Dennis Macchio (born August 1, 1978) is an American tenor who specializes in classical crossover music. He is a member of New York Tenors and has released two studio albums, Dolci Momenti
popularity: 13
followers: 4082
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  date published: 2026-06-15T11:57:35Z
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album: Dolci Momenti
  type: MusicAlbum
  date published: 2011-09-05
  track: Core 'ngrato
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    by artist: Christopher Macchio
    in album: Dolci Momenti
      type: MusicAlbum
      date published: 2011-09-05
    genre: opera
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    subject of: OpenTimestamps Proof of Existence
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      date published: 2026-07-21T19:50:27Z
    audio: Core 'ngrato
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  track: 'O Sole Mio
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    by artist: Christopher Macchio
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      date published: 2011-09-05
    genre: opera
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    subject of: OpenTimestamps Proof of Existence
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      date published: 2026-07-05T10:59:37Z
    audio: 'O Sole Mio
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  track: Nessun Dorma

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Loudness (dB)
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Nessun Dorma
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duration ms: 179893
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by artist: Christopher Macchio
in album: Dolci Momenti
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  date published: 2011-09-05
genre: opera
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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
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-11T21:37:58Z
audio: Nessun Dorma
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