Umberto Marcato
type: MusicGroup
genre: iskelmä
popularity: 14
followers: 1704
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerifyInstructions
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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 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
subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d76b2530c43b6849b0ac1c4d374f79aaead08f226f083a8c43109188f2dca6e. Chain 2 (Bitcoin): anchored in block 953694 (2026-06-14T21:38:09Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6edcefa9-97d6-4b75-a9a1-b645247c8b56.json and https://artists.proofprofile.net/proofs/artist/6edcefa9-97d6-4b75-a9a1-b645247c8b56.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-14T21:38:09Z
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album: Volare (Nel Blu, Dipinto Di Blu)
  type: MusicAlbum
  date published: 1958-10-01
album: Papa' Nun Vuo'
  type: MusicAlbum
  date published: 1959-05-20
album: The Romantic Voice of Umberto Marcato
  type: MusicAlbum
  date published: 1959-10-01
album: Romantica!
  type: MusicAlbum
  date published: 1960-10-01
album: 20 Suosikkia / Restera (Liljankukka)
  type: MusicAlbum
  date published: 1998-06-01
album: Canzoni Popolari Venete
  type: MusicAlbum
  date published: 2006-01-10
  track: All'Ombra De La Specola
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    duration: PT2M52S
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    by artist: Umberto Marcato
    in album: Canzoni Popolari Venete
      type: MusicAlbum
      date published: 2006-01-10
    genre: iskelmä
    isrc code: USA370539782
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    additional property: OTSVerificationAPI
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    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-03T19:59:51Z
    additional property: OTSVerifyInstructions
      type: PropertyValue
      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
    subject of: OpenTimestamps Proof of Existence
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      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9a5822d752c8eee793c8a14d261579fe2f1c811d7704dfd4de100f465452fae. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/USA370539782.
      date published: 2026-07-03T19:59:51Z
    audio: All'Ombra De La Specola
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      additional property: Tempo (BPM)
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        value: 50
      additional property: Musical Key
        type: PropertyValue
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      additional property: Mode (Major/Minor)
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        value: 1
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        value: 4
      additional property: Danceability
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      additional property: Energy
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      additional property: Acousticness
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      additional property: Instrumentalness
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      additional property: Liveness
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      additional property: Valence (Positivity)
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        value: 0
      additional property: Loudness (dB)
        type: PropertyValue
        value: -4.744
      additional property: Key Name
        type: PropertyValue
        value: Eb
      additional property: Mode Name
        type: PropertyValue
        value: Major
  track: Ma Quando Torno A Padova
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    by artist: Umberto Marcato
    in album: Canzoni Popolari Venete
      type: MusicAlbum
      date published: 2006-01-10
    genre: iskelmä
    isrc code: USA370539783
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    additional property: OTSVerificationAPI
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    additional property: OTSTimestamp
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      value: 2026-07-20T02:04:13Z
    additional property: OTSVerifyInstructions
      type: PropertyValue
      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
    subject of: OpenTimestamps Proof of Existence
      type: DigitalDocument
      encoding format: application/vnd.opentimestamps.ots
      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2eb807224674dd4b4c60ab5d621ec88d4b4b7625f690506adcb5e1cd14999e14. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:04:13Z), 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/USA370539783.
      date published: 2026-07-20T02:04:13Z
    audio: Ma Quando Torno A Padova
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      additional property: Tempo (BPM)
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        value: 116.451
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      additional property: Mode (Major/Minor)
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        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.518
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        value: 0.42
      additional property: Speechiness
      additional property: Acousticness
      additional property: Instrumentalness
      additional property: Liveness
      additional property: Valence (Positivity)
      additional property: Loudness (dB)
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album: Songs For The Mood Of Ever
album: The Very Best Of Umberto Marcato - Today & Yesterday
album: Romantico Italiano
album: Greetings From Italy
album: Italian Folk Music Veneto Vol. 3
album: Bella notte
album: Al Di La
album: Mi sogno Venezia
album: Ma quando torno a Padova
album: Bianco Natale

Speechiness
type: PropertyValue
value: 0.035

Acousticness
type: PropertyValue
value: 0.836

Instrumentalness
type: PropertyValue
value: 0

Liveness
type: PropertyValue
value: 0.123

Valence (Positivity)
type: PropertyValue
value: 0.495

Loudness (dB)
type: PropertyValue
value: -5.735

Key Name
type: PropertyValue
value: D

Mode Name
type: PropertyValue
value: Major

Songs For The Mood Of Ever
type: MusicAlbum
date published: 2007-01-01

The Very Best Of Umberto Marcato - Today & Yesterday
type: MusicAlbum
date published: 2009-07-14

Romantico Italiano
type: MusicAlbum
date published: 2009-10-19

Greetings From Italy
type: MusicAlbum
date published: 2010-06-01

Italian Folk Music Veneto Vol. 3
type: MusicAlbum
date published: 2012-12-31

Bella notte
type: MusicAlbum
date published: 2014-02-04

Al Di La
type: MusicAlbum
date published: 2014-10-02

Mi sogno Venezia
type: MusicAlbum
date published: 2016

Al Di La
type: MusicAlbum
date published: 2018-12-04

Al Di La
type: MusicAlbum
date published: 2019-04-30

Ma quando torno a Padova
type: MusicAlbum
date published: 2019-09-12

Bianco Natale
type: MusicAlbum
date published: 2020-11-06