Leon Holst
type: MusicGroup
popularity: 2
followers: 63
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x607a2c2e0efa9f2b6b1a52a37476f6e40b146d95daf3d0d385716b326db48e2c
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954659
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954659
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/dd403473-8fd5-4fcb-a1f1-a77e8d49cdd8.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/dd403473-8fd5-4fcb-a1f1-a77e8d49cdd8.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/dd403473-8fd5-4fcb-a1f1-a77e8d49cdd8
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T06:14:42Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x607a2c2e0efa9f2b6b1a52a37476f6e40b146d95daf3d0d385716b326db48e2c","name":"Leon Holst","registered_at":"2026-06-21T05:18:26Z","symbol":"NIM1831549","token_address":"0x5598fc57c33455795d1b73b360661dad1bce0ae2","type":"artist","uuid":"dd403473-8fd5-4fcb-a1f1-a77e8d49cdd8"}
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 0x607a2c2e0efa9f2b6b1a52a37476f6e40b146d95daf3d0d385716b326db48e2c. Chain 2 (Bitcoin): anchored in block 954659 (2026-06-21T06:14:42Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/dd403473-8fd5-4fcb-a1f1-a77e8d49cdd8.json and https://artists.proofprofile.net/proofs/artist/dd403473-8fd5-4fcb-a1f1-a77e8d49cdd8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T06:14:42Z
  text: {"copyright_id":"0x607a2c2e0efa9f2b6b1a52a37476f6e40b146d95daf3d0d385716b326db48e2c","name":"Leon Holst","registered_at":"2026-06-21T05:18:26Z","symbol":"NIM1831549","token_address":"0x5598fc57c33455795d1b73b360661dad1bce0ae2","type":"artist","uuid":"dd403473-8fd5-4fcb-a1f1-a77e8d49cdd8"}
album: BFN
  type: MusicAlbum
  date published: 2024-10-17
album: SE DEG IGJEN
  type: MusicAlbum
  date published: 2024-12-11
  track: SE DEG IGJEN
    type: MusicRecording
    duration: PT3M23S
    duration ms: 203389
    explicit: true
    by artist: Leon Holst
    in album: SE DEG IGJEN
      type: MusicAlbum
      date published: 2024-12-11
    isrc code: QZZ7V2445884
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-05T23:05:08+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xc9afe17ca96c71732cd713976261fcc291da6341accf1dbee0ea9bac8f4e80fa
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956856
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956856
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZZ7V2445884
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-06T01:25:57Z
    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 0xc9afe17ca96c71732cd713976261fcc291da6341accf1dbee0ea9bac8f4e80fa. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZZ7V2445884.
      date published: 2026-07-06T01:25:57Z
    audio: SE DEG IGJEN
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 117.947
      additional property: Musical Key
        type: PropertyValue
        value: 2
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.641
      additional property: Energy
        type: PropertyValue
        value: 0.418
      additional property: Speechiness
        type: PropertyValue
        value: 0.192
      additional property: Acousticness
        type: PropertyValue
        value: 0.322
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.108
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.63
      additional property: Loudness (dB)
        type: PropertyValue
        value: -9.334
      additional property: Key Name
        type: PropertyValue
        value: D
      additional property: Mode Name
        type: PropertyValue
        value: Minor