Leonardo 79
type: MusicGroup
popularity: 7
followers: 656
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xf4cd6828ffce12578d50ae22e99b4782bf381c39639289aa18bc254868b8c64d
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953895
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953895
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/1002a400-7b8f-457c-b396-9837be701419.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/1002a400-7b8f-457c-b396-9837be701419.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/1002a400-7b8f-457c-b396-9837be701419
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T05:46:35Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xf4cd6828ffce12578d50ae22e99b4782bf381c39639289aa18bc254868b8c64d","name":"Leonardo 79","registered_at":"2026-06-15T19:06:12Z","symbol":"NIM0803291","token_address":"0x771378b2c96e04c1a98b8cde7ff149471d04a5cb","type":"artist","uuid":"1002a400-7b8f-457c-b396-9837be701419"}
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 0xf4cd6828ffce12578d50ae22e99b4782bf381c39639289aa18bc254868b8c64d. Chain 2 (Bitcoin): anchored in block 953895 (2026-06-16T05:46:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1002a400-7b8f-457c-b396-9837be701419.json and https://artists.proofprofile.net/proofs/artist/1002a400-7b8f-457c-b396-9837be701419.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T05:46:35Z
  text: {"copyright_id":"0xf4cd6828ffce12578d50ae22e99b4782bf381c39639289aa18bc254868b8c64d","name":"Leonardo 79","registered_at":"2026-06-15T19:06:12Z","symbol":"NIM0803291","token_address":"0x771378b2c96e04c1a98b8cde7ff149471d04a5cb","type":"artist","uuid":"1002a400-7b8f-457c-b396-9837be701419"}
album: Incomparables
  type: MusicAlbum
  date published: 2019-04-15
  track: Zumbeaito
    type: MusicRecording
    duration: PT4M8S
    duration ms: 248058
    explicit: false
    by artist: Leonardo 79
    in album: Incomparables
      type: MusicAlbum
      date published: 2019-04-15
    isrc code: USDY41901411
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-16T09:07:55+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x652843ff2cd15f562373a59a54551deb4180171765538aa0d3473832834f1cf1
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958276
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958276
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USDY41901411
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-16T10:20:17Z
    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 0x652843ff2cd15f562373a59a54551deb4180171765538aa0d3473832834f1cf1. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/USDY41901411.
      date published: 2026-07-16T10:20:17Z
    audio: Zumbeaito
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 159.899
      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: 0.816
      additional property: Energy
        type: PropertyValue
        value: 0.841
      additional property: Speechiness
        type: PropertyValue
        value: 0.057
      additional property: Acousticness
        type: PropertyValue
        value: 0.162
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.338
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.893
      additional property: Loudness (dB)
        type: PropertyValue
        value: -4.808
      additional property: Key Name
        type: PropertyValue
        value: A
      additional property: Mode Name
        type: PropertyValue
        value: Minor