Le Cast
type: MusicGroup
genre: italo disco
genre: synthwave
popularity: 3
followers: 220
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x85ddbb60fa1a6b0942d0c3ceac7cd12c5cfa0ab73ef7e6bba3ace58b82f8c7c1
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953973
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953973
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/2b216073-ecbb-4160-8e95-0e7d55f9e2ad.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/2b216073-ecbb-4160-8e95-0e7d55f9e2ad.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/2b216073-ecbb-4160-8e95-0e7d55f9e2ad
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T16:37:07Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x85ddbb60fa1a6b0942d0c3ceac7cd12c5cfa0ab73ef7e6bba3ace58b82f8c7c1","name":"Le Cast","registered_at":"2026-06-16T04:31:53Z","symbol":"NIM0938306","token_address":"0xb77aee65e1c46e1d58086e5c552f3206083102dd","type":"artist","uuid":"2b216073-ecbb-4160-8e95-0e7d55f9e2ad"}
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 0x85ddbb60fa1a6b0942d0c3ceac7cd12c5cfa0ab73ef7e6bba3ace58b82f8c7c1. Chain 2 (Bitcoin): anchored in block 953973 (2026-06-16T16:37:07Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2b216073-ecbb-4160-8e95-0e7d55f9e2ad.json and https://artists.proofprofile.net/proofs/artist/2b216073-ecbb-4160-8e95-0e7d55f9e2ad.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T16:37:07Z
  text: {"copyright_id":"0x85ddbb60fa1a6b0942d0c3ceac7cd12c5cfa0ab73ef7e6bba3ace58b82f8c7c1","name":"Le Cast","registered_at":"2026-06-16T04:31:53Z","symbol":"NIM0938306","token_address":"0xb77aee65e1c46e1d58086e5c552f3206083102dd","type":"artist","uuid":"2b216073-ecbb-4160-8e95-0e7d55f9e2ad"}
album: Sigh of Relief
  type: MusicAlbum
  date published: 2021-03-02
album: Lucid Dream
  type: MusicAlbum
  date published: 2021-11-19
album: Highways
  type: MusicAlbum
  date published: 2024-12-19
  track: Rearview Mirror
    type: MusicRecording
    duration: PT3M41S
    duration ms: 221739
    explicit: false
    by artist: Le Cast
    in album: Highways
      type: MusicAlbum
      date published: 2024-12-19
    genre: italo disco
    genre: synthwave
    isrc code: GB8UU2400703
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-05T16:50:11+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xe571935c47825fee1402862f1f490c8ba4871e9b2c68ecb71a9768e6c0e63f8a
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956826
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956826
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GB8UU2400703
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-05T19:27:56Z
    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 0xe571935c47825fee1402862f1f490c8ba4871e9b2c68ecb71a9768e6c0e63f8a. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/GB8UU2400703.
      date published: 2026-07-05T19:27:56Z
    audio: Rearview Mirror
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 115.017
      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: 0.564
      additional property: Energy
        type: PropertyValue
        value: 0.585
      additional property: Speechiness
        type: PropertyValue
        value: 0.029
      additional property: Acousticness
        type: PropertyValue
        value: 0.147
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.005
      additional property: Liveness
        type: PropertyValue
        value: 0.124
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.2
      additional property: Loudness (dB)
        type: PropertyValue
        value: -12.146
      additional property: Key Name
        type: PropertyValue
        value: C
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: Pulsars
  type: MusicAlbum
  date published: 2025-06-26