Joshua Constantine
type: MusicGroup
popularity: 5
followers: 125
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xe0a6b37ed520d3983b2e105c447b978d87ce8d011bd3dfc9298f760800c4f509
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953928
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953928
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/1dabb07c-6372-43d9-8f6e-b6b80b1fb558.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/1dabb07c-6372-43d9-8f6e-b6b80b1fb558.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/1dabb07c-6372-43d9-8f6e-b6b80b1fb558
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T10:21:55Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xe0a6b37ed520d3983b2e105c447b978d87ce8d011bd3dfc9298f760800c4f509","name":"Joshua Constantine","registered_at":"2026-06-15T23:56:57Z","symbol":"NIM0872641","token_address":"0xfbddd00d1bb8786b2a37a01f562d18f306fa0232","type":"artist","uuid":"1dabb07c-6372-43d9-8f6e-b6b80b1fb558"}
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 0xe0a6b37ed520d3983b2e105c447b978d87ce8d011bd3dfc9298f760800c4f509. Chain 2 (Bitcoin): anchored in block 953928 (2026-06-16T10:21:55Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1dabb07c-6372-43d9-8f6e-b6b80b1fb558.json and https://artists.proofprofile.net/proofs/artist/1dabb07c-6372-43d9-8f6e-b6b80b1fb558.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T10:21:55Z
  text: {"copyright_id":"0xe0a6b37ed520d3983b2e105c447b978d87ce8d011bd3dfc9298f760800c4f509","name":"Joshua Constantine","registered_at":"2026-06-15T23:56:57Z","symbol":"NIM0872641","token_address":"0xfbddd00d1bb8786b2a37a01f562d18f306fa0232","type":"artist","uuid":"1dabb07c-6372-43d9-8f6e-b6b80b1fb558"}
album: Soul Project
  type: MusicAlbum
  date published: 2022-07-07
  track: Just the Two of Us
    type: MusicRecording
    duration: PT5M42S
    duration ms: 342788
    explicit: false
    by artist: Joshua Constantine
    in album: Soul Project
      type: MusicAlbum
      date published: 2022-07-07
    isrc code: QZK6N2208111
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-04T02:42:06+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x172bcb45c859cb6b1a3bdbea213fd455ae0d808e7e43972839d178593aea882d
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956639
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956639
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6N2208111
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-04T11:19:20Z
    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 0x172bcb45c859cb6b1a3bdbea213fd455ae0d808e7e43972839d178593aea882d. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZK6N2208111.
      date published: 2026-07-04T11:19:20Z
    audio: Just the Two of Us
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 92.428
      additional property: Musical Key
        type: PropertyValue
        value: 10
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.672
      additional property: Energy
        type: PropertyValue
        value: 0.59
      additional property: Speechiness
        type: PropertyValue
        value: 0.047
      additional property: Acousticness
        type: PropertyValue
        value: 0.415
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.698
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.695
      additional property: Loudness (dB)
        type: PropertyValue
        value: -6.915
      additional property: Key Name
        type: PropertyValue
        value: Bb
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: Soul Project Vol. II: Mercy, Hallelujah!
  type: MusicAlbum
  date published: 2024-06-14
album: Just a Couple of Standards
  type: MusicAlbum
  date published: 2025-05-11
album: Speak Low
  type: MusicAlbum
  date published: 2025-09-25