Massimo Viazzo
type: MusicGroup
popularity: 17
followers: 305
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x1b1fbff5f51099fc150b07f8e785f4848140fcc6d888eab70bfe85a60c5c1721
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953842
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953842
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/e157785b-dab5-4b37-ac89-aaacb2cf1ea8.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/e157785b-dab5-4b37-ac89-aaacb2cf1ea8.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/e157785b-dab5-4b37-ac89-aaacb2cf1ea8
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T22:22:30Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x1b1fbff5f51099fc150b07f8e785f4848140fcc6d888eab70bfe85a60c5c1721","name":"Massimo Viazzo","registered_at":"2026-06-15T04:06:26Z","symbol":"NIM0676848","token_address":"0x7751be449f8e86ee2339c698e9b896858bb8ab44","type":"artist","uuid":"e157785b-dab5-4b37-ac89-aaacb2cf1ea8"}
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 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 0x1b1fbff5f51099fc150b07f8e785f4848140fcc6d888eab70bfe85a60c5c1721. Chain 2 (Bitcoin): anchored in block 953842 (2026-06-15T22:22:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e157785b-dab5-4b37-ac89-aaacb2cf1ea8.json and https://artists.proofprofile.net/proofs/artist/e157785b-dab5-4b37-ac89-aaacb2cf1ea8.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
  date published: 2026-06-15T22:22:30Z
  text: {"copyright_id":"0x1b1fbff5f51099fc150b07f8e785f4848140fcc6d888eab70bfe85a60c5c1721","name":"Massimo Viazzo","registered_at":"2026-06-15T04:06:26Z","symbol":"NIM0676848","token_address":"0x7751be449f8e86ee2339c698e9b896858bb8ab44","type":"artist","uuid":"e157785b-dab5-4b37-ac89-aaacb2cf1ea8"}
album: Musique pour le ballet
  type: MusicAlbum
  date published: 2013-02-14
album: Una mattina (Piano con sentimento)
  type: MusicAlbum
  date published: 2014
  track: Una mattina (Piano Version) - Da “Untouchables”
    type: MusicRecording
    duration: PT6M24S
    duration ms: 384757
    explicit: false
    by artist: Massimo Viazzo
    in album: Una mattina (Piano con sentimento)
      type: MusicAlbum
      date published: 2014
    isrc code: ITC091400201
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-12T01:54:48+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xa5eb3b43b3a07899010f714c04ce4c1d8a4670f2ec27023b91dd33b01b4d5b1b
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 957642
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/957642
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITC091400201
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-12T02:46:48Z
    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 0xa5eb3b43b3a07899010f714c04ce4c1d8a4670f2ec27023b91dd33b01b4d5b1b. Chain 2 (Bitcoin): anchored in block 957642 (2026-07-12T02:46:48Z), 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/ITC091400201 — a six-check JSON result.
      date published: 2026-07-12T02:46:48Z
    audio: Una mattina (Piano Version) - Da “Untouchables”
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 138.297
      additional property: Musical Key
        type: PropertyValue
        value: 9
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.255
      additional property: Energy
        type: PropertyValue
        value: 0.007
      additional property: Speechiness
        type: PropertyValue
        value: 0.051
      additional property: Acousticness
        type: PropertyValue
        value: 0.995
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.92
      additional property: Liveness
        type: PropertyValue
        value: 0.096
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.079
      additional property: Loudness (dB)
        type: PropertyValue
        value: -31.721
      additional property: Key Name
        type: PropertyValue
        value: A
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: The Magic of the Piano (Beautiful Modern Piano Sonatas)
  type: MusicAlbum
  date published: 2015
album: River Flows in You (Piano Stories)
  type: MusicAlbum
  date published: 2015
  track: Acqua
    type: MusicRecording
    duration: PT3M49S
    duration ms: 229408
    explicit: false
    by artist: Massimo Viazzo
    in album: River Flows in You (Piano Stories)
      type: MusicAlbum
      date published: 2015
    isrc code: ITC091400204
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-05T09:07:40+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x443aec4a527296821e874e477a89978a3041a2d5f7938f41bcd229778410545e
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956772
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956772
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITC091400204
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-05T10:01:46Z
    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 0x443aec4a527296821e874e477a89978a3041a2d5f7938f41bcd229778410545e. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/ITC091400204 — a six-check JSON result.
      date published: 2026-07-05T10:01:46Z
    audio: Acqua
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 204.731
      additional property: Musical Key
        type: PropertyValue
        value: 3
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.32
      additional property: Energy
        type: PropertyValue
        value: 0.23
      additional property: Speechiness
        type: PropertyValue
        value: 0.049
      additional property: Acousticness
        type: PropertyValue
        value: 0.993
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.937
      additional property: Liveness
      additional property: Valence (Positivity)
      additional property: Loudness (dB)
      additional property: Key Name
      additional property: Mode Name

Liveness
type: PropertyValue
value: 0.113

Valence (Positivity)
type: PropertyValue
value: 0.454

Loudness (dB)
type: PropertyValue
value: -20.939

Key Name
type: PropertyValue
value: Eb

Mode Name
type: PropertyValue
value: Major