Trio Variabile
type: MusicGroup
genre: album rock
popularity: 2
followers: 20
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x7a4cb922729a6aa6850f25cf1f8ac95ef9d03bb1232928f3ba61e9ba91233d93
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954618
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954618
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/c8bc2440-13e2-482b-ba5a-0de0fabe39f7.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/c8bc2440-13e2-482b-ba5a-0de0fabe39f7.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/c8bc2440-13e2-482b-ba5a-0de0fabe39f7
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T23:05:13Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x7a4cb922729a6aa6850f25cf1f8ac95ef9d03bb1232928f3ba61e9ba91233d93","name":"Trio Variabile","registered_at":"2026-06-20T22:14:10Z","symbol":"NIM1730832","token_address":"0xdf8168eee6609e094c2092691da4c92f963667ed","type":"artist","uuid":"c8bc2440-13e2-482b-ba5a-0de0fabe39f7"}
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 0x7a4cb922729a6aa6850f25cf1f8ac95ef9d03bb1232928f3ba61e9ba91233d93. Chain 2 (Bitcoin): anchored in block 954618 (2026-06-20T23:05:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c8bc2440-13e2-482b-ba5a-0de0fabe39f7.json and https://artists.proofprofile.net/proofs/artist/c8bc2440-13e2-482b-ba5a-0de0fabe39f7.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
  date published: 2026-06-20T23:05:13Z
  text: {"copyright_id":"0x7a4cb922729a6aa6850f25cf1f8ac95ef9d03bb1232928f3ba61e9ba91233d93","name":"Trio Variabile","registered_at":"2026-06-20T22:14:10Z","symbol":"NIM1730832","token_address":"0xdf8168eee6609e094c2092691da4c92f963667ed","type":"artist","uuid":"c8bc2440-13e2-482b-ba5a-0de0fabe39f7"}
album: Sono bugiardo (I'm a Believer)
  type: MusicAlbum
  date published: 2023-06-02
album: Azzurro
  type: MusicAlbum
  date published: 2024-08-19
  track: Azzurro
    type: MusicRecording
    duration: PT4M18S
    duration ms: 258500
    explicit: false
    by artist: Trio Variabile
    in album: Azzurro
      type: MusicAlbum
      date published: 2024-08-19
    genre: album rock
    isrc code: QM7282476327
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-21T16:34:19+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xddcb6a1d3bd31a5a4983a01fa3acc6762a8837fab9675ffb8cc0e3b9bc78e062
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 959037
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/959037
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM7282476327
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-21T16:59:47Z
    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 0xddcb6a1d3bd31a5a4983a01fa3acc6762a8837fab9675ffb8cc0e3b9bc78e062. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/QM7282476327 — a six-check JSON result.
      date published: 2026-07-21T16:59:47Z
    audio: Azzurro
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 119.996
      additional property: Musical Key
        type: PropertyValue
        value: 2
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.734
      additional property: Energy
        type: PropertyValue
        value: 0.557
      additional property: Speechiness
        type: PropertyValue
        value: 0.03
      additional property: Acousticness
        type: PropertyValue
        value: 0.52
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.109
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.702
      additional property: Loudness (dB)
        type: PropertyValue
        value: -13.002
      additional property: Key Name
        type: PropertyValue
        value: D
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: E la chiamano estate
  type: MusicAlbum
  date published: 2024-10-21
album: To Love Somebody
  type: MusicAlbum
  date published: 2025-01-27
album: Erba di casa mia
  type: MusicAlbum
  date published: 2025-09-18