LFD
type: MusicGroup
description: LFD may refer to: Large format display, a flat-screen television used for advertising signage Lateral flow device (or test), in medicine Lingfield railway station, Surrey, England , a French scho
popularity: 3
followers: 122
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x32bf0a82dc950acadb5ed8d269b1d44b496029b8b08c09676997476bc942d595
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954549
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954549
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/aa31fd8c-1b49-48e1-b4ca-112d3583729c.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/aa31fd8c-1b49-48e1-b4ca-112d3583729c.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/aa31fd8c-1b49-48e1-b4ca-112d3583729c
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T10:56:20Z
additional property: OTSCanonicalRecord
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 0x32bf0a82dc950acadb5ed8d269b1d44b496029b8b08c09676997476bc942d595. Chain 2 (Bitcoin): anchored in block 954549 (2026-06-20T10:56:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/aa31fd8c-1b49-48e1-b4ca-112d3583729c.json and https://artists.proofprofile.net/proofs/artist/aa31fd8c-1b49-48e1-b4ca-112d3583729c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T10:56:20Z
album: Ex animo
  type: MusicAlbum
  date published: 2024-01-26
album: Thérapeia (MayDay)
  type: MusicAlbum
  date published: 2024-04-12
album: Prison
  type: MusicAlbum
  date published: 2024-12-13
  track: Prison
    type: MusicRecording
    duration: PT2M26S
    duration ms: 146400
    explicit: false
    by artist: LFD
    in album: Prison
      type: MusicAlbum
      date published: 2024-12-13
    isrc code: QZZ7W2414065
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-06T03:42:48+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x25ee31a5600f22337501147a66fd84403b53d1e59242b11f9e97a7de699e6b26
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956889
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956889
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZZ7W2414065
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-06T06:56:49Z
    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 0x25ee31a5600f22337501147a66fd84403b53d1e59242b11f9e97a7de699e6b26. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZZ7W2414065.
      date published: 2026-07-06T06:56:49Z
    audio: Prison
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 67.445
      additional property: Musical Key
        type: PropertyValue
        value: 2
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 3
      additional property: Danceability
        type: PropertyValue
        value: 0.418
      additional property: Energy
        type: PropertyValue
        value: 0.388
      additional property: Speechiness
        type: PropertyValue
        value: 0.398
      additional property: Acousticness
        type: PropertyValue
        value: 0.396
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.172
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.644
      additional property: Loudness (dB)
        type: PropertyValue
        value: -11.656
      additional property: Key Name
        type: PropertyValue
        value: D
      additional property: Mode Name
        type: PropertyValue
        value: Minor