Lorenzo Materazzo
type: MusicGroup
genre: neoclassical
popularity: 4
followers: 196
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x3e23112bd65e478037c2ee96ebab70bdc3104275b88c9b4498511733b49960cc
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954667
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954667
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/ddefdaee-0773-474b-a538-4ded27507539.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/ddefdaee-0773-474b-a538-4ded27507539.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/ddefdaee-0773-474b-a538-4ded27507539
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T07:29:20Z
additional property: OTSCanonicalRecord
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  value: {"copyright_id":"0x3e23112bd65e478037c2ee96ebab70bdc3104275b88c9b4498511733b49960cc","name":"Lorenzo Materazzo","registered_at":"2026-06-21T05:32:30Z","symbol":"NIM1834966","token_address":"0xd31f8fda67f36e34374828158df9e6e4c8c2d66f","type":"artist","uuid":"ddefdaee-0773-474b-a538-4ded27507539"}
additional property: OTSVerifyInstructions
  type: PropertyValue
  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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e23112bd65e478037c2ee96ebab70bdc3104275b88c9b4498511733b49960cc. 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/ddefdaee-0773-474b-a538-4ded27507539.json and https://artists.proofprofile.net/proofs/artist/ddefdaee-0773-474b-a538-4ded27507539.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T07:29:20Z
  text: {"copyright_id":"0x3e23112bd65e478037c2ee96ebab70bdc3104275b88c9b4498511733b49960cc","name":"Lorenzo Materazzo","registered_at":"2026-06-21T05:32:30Z","symbol":"NIM1834966","token_address":"0xd31f8fda67f36e34374828158df9e6e4c8c2d66f","type":"artist","uuid":"ddefdaee-0773-474b-a538-4ded27507539"}
album: Nowhere
  type: MusicAlbum
  date published: 2013-11-12
  track: Le vent printanier (a Chiara)
    type: MusicRecording
    duration: PT3M40S
    duration ms: 220840
    explicit: false
    by artist: Lorenzo Materazzo
    in album: Nowhere
      type: MusicAlbum
      date published: 2013-11-12
    genre: neoclassical
    isrc code: ITG361300018
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
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      value: 2026-07-22T02:15:24+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
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    additional property: OTSHash
    additional property: OTSBitcoinBlock
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    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/959091
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITG361300018
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-22T05:10:40Z
    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
    subject of: OpenTimestamps Proof of Existence
      type: DigitalDocument
      encoding format: application/vnd.opentimestamps.ots
      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf25d268342e381f958c151ef870fd706da70b1e4096146f6a9d10d09bb7522c2. Chain 2 (Bitcoin): anchored in block 959091 (2026-07-22T05:10:40Z), 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/ITG361300018.
      date published: 2026-07-22T05:10:40Z
    audio: Le vent printanier (a Chiara)
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 70.714
      additional property: Musical Key
        type: PropertyValue
        value: 2
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.196
      additional property: Energy
        type: PropertyValue
        value: 0.238
      additional property: Speechiness
        type: PropertyValue
        value: 0.041
      additional property: Acousticness
        type: PropertyValue
        value: 0.98
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.933
      additional property: Liveness
        type: PropertyValue
        value: 0.111
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.077
      additional property: Loudness (dB)
        type: PropertyValue
        value: -16.204
      additional property: Key Name
        type: PropertyValue
        value: D
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: Nowhere
  type: MusicAlbum
  date published: 2013-11-12
album: Landscape
  type: MusicAlbum
  date published: 2016-04-01
album: Lorenzo Materazzo Plays Scarlatti & Bach
  type: MusicAlbum
  date published: 2018-09-01
album: Scarlatti: Keyboard Sonatas - Bach: French Suite No. 5 in G Major, BWV 816
  type: MusicAlbum
  date published: 2018-10-19
album: Roger... arriva il Presidente! (Soundtrack)
  type: MusicAlbum
  date published: 2023-04-13
album: Nowhere
  type: MusicAlbum
  date published: 2025-09-06