Umberto Porcaro
type: MusicGroup
genre: blues
genre: country blues
popularity: 5
followers: 349
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x812a60a7d66466aca283e830f2fd38e6d56095f379a0322fc5d2ad55e9f3843d
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953888
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953888
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/0dda4efd-c12a-4e93-b277-e1cfaf7ecf35.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/0dda4efd-c12a-4e93-b277-e1cfaf7ecf35.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/0dda4efd-c12a-4e93-b277-e1cfaf7ecf35
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T04:55:23Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x812a60a7d66466aca283e830f2fd38e6d56095f379a0322fc5d2ad55e9f3843d","name":"Umberto Porcaro","registered_at":"2026-06-15T18:25:27Z","symbol":"NIM0793568","token_address":"0xf171f61468e74b9b98b902e5a1e0043a2eba526c","type":"artist","uuid":"0dda4efd-c12a-4e93-b277-e1cfaf7ecf35"}
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 0x812a60a7d66466aca283e830f2fd38e6d56095f379a0322fc5d2ad55e9f3843d. Chain 2 (Bitcoin): anchored in block 953949 (2026-06-16T13:28:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0dda4efd-c12a-4e93-b277-e1cfaf7ecf35.json and https://artists.proofprofile.net/proofs/artist/0dda4efd-c12a-4e93-b277-e1cfaf7ecf35.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T13:28:01Z
  text: {"copyright_id":"0x812a60a7d66466aca283e830f2fd38e6d56095f379a0322fc5d2ad55e9f3843d","name":"Umberto Porcaro","registered_at":"2026-06-15T18:25:27Z","symbol":"NIM0793568","token_address":"0xf171f61468e74b9b98b902e5a1e0043a2eba526c","type":"artist","uuid":"0dda4efd-c12a-4e93-b277-e1cfaf7ecf35"}
album: Burn the Day Away
  type: MusicAlbum
  date published: 2005-05-13
album: Pleasure Is My Business
  type: MusicAlbum
  date published: 2013-05-13
album: Take me home
  type: MusicAlbum
  date published: 2022-09-10
album: Take Me Home
  type: MusicAlbum
  date published: 2022-10-09
album: Take me home
  type: MusicAlbum
  date published: 2022-10-09
album: Take Me Home
  type: MusicAlbum
  date published: 2022-10-09
  track: Out of the Storm
    type: MusicRecording
    duration: PT3M56S
    duration ms: 236400
    explicit: false
    by artist: Umberto Porcaro
    in album: Take Me Home
      type: MusicAlbum
      date published: 2022-10-09
    genre: blues
    genre: country blues
    isrc code: CHB252200024
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-18T08:09:12+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x3e1a2531cf50e4cb7d30e65a9ff6991f3e63eb8c310a6a0e1a29b971a91282eb
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958520
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958520
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CHB252200024
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-18T08:19:09Z
    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 0x3e1a2531cf50e4cb7d30e65a9ff6991f3e63eb8c310a6a0e1a29b971a91282eb. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/CHB252200024.
      date published: 2026-07-18T08:19:09Z
    audio: Out of the Storm
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 99.936
      additional property: Musical Key
        type: PropertyValue
        value: 0
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.641
      additional property: Energy
        type: PropertyValue
        value: 0.702
      additional property: Speechiness
        type: PropertyValue
        value: 0.033
      additional property: Acousticness
        type: PropertyValue
        value: 0.541
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.171
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.566
      additional property: Loudness (dB)
        type: PropertyValue
        value: -7.818
      additional property: Key Name
        type: PropertyValue
        value: C
      additional property: Mode Name
        type: PropertyValue
        value: Minor