Leonard Blair
type: MusicGroup
genre: cool jazz
genre: jazz blues
popularity: 5
followers: 443
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x7ae54d6159eb5912272a4510d60e1a7d66c410ccab79b25540b80a1b972db325
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954533
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954533
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/a6973c9b-225b-4132-9a3a-009a506d1287.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/a6973c9b-225b-4132-9a3a-009a506d1287.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/a6973c9b-225b-4132-9a3a-009a506d1287
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T08:57:02Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x7ae54d6159eb5912272a4510d60e1a7d66c410ccab79b25540b80a1b972db325","name":"Leonard Blair","registered_at":"2026-06-20T08:11:38Z","symbol":"NIM1561733","token_address":"0x97f28d346d8b8dc3fd1e88831de8941249bdc8b4","type":"artist","uuid":"a6973c9b-225b-4132-9a3a-009a506d1287"}
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 0x7ae54d6159eb5912272a4510d60e1a7d66c410ccab79b25540b80a1b972db325. Chain 2 (Bitcoin): anchored in block 954533 (2026-06-20T08:57:02Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a6973c9b-225b-4132-9a3a-009a506d1287.json and https://artists.proofprofile.net/proofs/artist/a6973c9b-225b-4132-9a3a-009a506d1287.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T08:57:02Z
  text: {"copyright_id":"0x7ae54d6159eb5912272a4510d60e1a7d66c410ccab79b25540b80a1b972db325","name":"Leonard Blair","registered_at":"2026-06-20T08:11:38Z","symbol":"NIM1561733","token_address":"0x97f28d346d8b8dc3fd1e88831de8941249bdc8b4","type":"artist","uuid":"a6973c9b-225b-4132-9a3a-009a506d1287"}
album: Gig Street VIII (feat. Vittorio Silvestri & Gianni Mozzillo)
  type: MusicAlbum
  date published: 2017-08-04
  track: Milenburg Joys (feat. Vittorio Silvestri & Gianni Mozzillo)
    type: MusicRecording
    duration: PT5M57S
    duration ms: 357009
    explicit: false
    by artist: Leonard Blair
    in album: Gig Street VIII (feat. Vittorio Silvestri & Gianni Mozzillo)
      type: MusicAlbum
      date published: 2017-08-04
    genre: cool jazz
    genre: jazz blues
    isrc code: TCADI1726331
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-19T18:41:54+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xbbcee68d5e7dadd384fa2c2afc2fd211f7a0b33f56762f4d1966b00476644765
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958770
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958770
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCADI1726331
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-19T19:26:13Z
    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 0xbbcee68d5e7dadd384fa2c2afc2fd211f7a0b33f56762f4d1966b00476644765. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T19:26:13Z), 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/TCADI1726331.
      date published: 2026-07-19T19:26:13Z
    audio: Milenburg Joys (feat. Vittorio Silvestri & Gianni Mozzillo)
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 164.647
      additional property: Musical Key
        type: PropertyValue
        value: 5
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.652
      additional property: Energy
        type: PropertyValue
        value: 0.617
      additional property: Speechiness
        type: PropertyValue
        value: 0.091
      additional property: Acousticness
        type: PropertyValue
        value: 0.83
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.281
      additional property: Liveness
        type: PropertyValue
        value: 0.049
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.675
      additional property: Loudness (dB)
        type: PropertyValue
        value: -6.639
      additional property: Key Name
        type: PropertyValue
        value: F
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Monsieur Blair Présente Vol.1 (feat. Fabien Cartalade & Didier Toffolini)
  type: MusicAlbum
  date published: 2018-01-26