Umberto Cattini
type: MusicGroup
genre: opera
popularity: 3
followers: 5
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xa08e03500be16116beb7363c4ec1875f70aa6e622c17195142000379c237baee
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954066
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954066
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/65b10a5b-f94a-4f7f-8c15-f010c1c2468e.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/65b10a5b-f94a-4f7f-8c15-f010c1c2468e.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/65b10a5b-f94a-4f7f-8c15-f010c1c2468e
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:11:48Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xa08e03500be16116beb7363c4ec1875f70aa6e622c17195142000379c237baee","name":"Umberto Cattini","registered_at":"2026-06-17T01:00:04Z","symbol":"NIM1231381","token_address":"0xbda92b0e4dc61309e5e256f64d71a4daa74091d1","type":"artist","uuid":"65b10a5b-f94a-4f7f-8c15-f010c1c2468e"}
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 0xa08e03500be16116beb7363c4ec1875f70aa6e622c17195142000379c237baee. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/65b10a5b-f94a-4f7f-8c15-f010c1c2468e.json and https://artists.proofprofile.net/proofs/artist/65b10a5b-f94a-4f7f-8c15-f010c1c2468e.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
  date published: 2026-06-17T08:11:48Z
  text: {"copyright_id":"0xa08e03500be16116beb7363c4ec1875f70aa6e622c17195142000379c237baee","name":"Umberto Cattini","registered_at":"2026-06-17T01:00:04Z","symbol":"NIM1231381","token_address":"0xbda92b0e4dc61309e5e256f64d71a4daa74091d1","type":"artist","uuid":"65b10a5b-f94a-4f7f-8c15-f010c1c2468e"}
album: A Discographic Career
  type: MusicAlbum
  date published: 2015-02-01
  track: Norma: Norma, Act I: A te, o cara
    type: MusicRecording
    duration: PT3M30S
    duration ms: 210680
    explicit: false
    by artist: Vincenzo Bellini
    by artist: Philharmonia Orchestra
    by artist: Franco Corelli
    by artist: Franco Ferraris
    in album: A Discographic Career
      type: MusicAlbum
      date published: 2015-02-01
    popularity: 2
    genre: opera
    isrc code: ITCC51101808
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-30T12:50:55+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x00af9c990cbb09d69da48a0d85a656d43f4999fd3bfd8a124dbdd5f2d9e67692
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 960264
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/960264
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITCC51101808
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-30T14:36:16Z
    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 0x00af9c990cbb09d69da48a0d85a656d43f4999fd3bfd8a124dbdd5f2d9e67692. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/ITCC51101808 — a six-check JSON result.
      date published: 2026-07-30T14:36:16Z
    audio: Norma: Norma, Act I: A te, o cara
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 111.679
      additional property: Musical Key
        type: PropertyValue
        value: 1
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 5
      additional property: Danceability
        type: PropertyValue
        value: 0.194
      additional property: Energy
        type: PropertyValue
        value: 0.169
      additional property: Speechiness
        type: PropertyValue
        value: 0.037
      additional property: Acousticness
        type: PropertyValue
        value: 0.986
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.002
      additional property: Liveness
        type: PropertyValue
        value: 0.097
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.118
      additional property: Loudness (dB)
        type: PropertyValue
        value: -19.302
      additional property: Key Name
        type: PropertyValue
        value: C#
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Il Mito dell'Opera: Flaviano Labò, Vol. 2 (Recorded 1958-1974)
  type: MusicAlbum
  date published: 2014-05-01