Leif Terje Nilsen
type: MusicGroup
popularity: 4
followers: 47
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x351bde4b0627d7d5072c2a2b4b6a91dd45d0ce50e1952e7acbbc4dc56dc88eb7
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954065
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954065
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/49b46a8b-feed-4e93-8210-fc5db417662c.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/49b46a8b-feed-4e93-8210-fc5db417662c.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/49b46a8b-feed-4e93-8210-fc5db417662c
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:10:43Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x351bde4b0627d7d5072c2a2b4b6a91dd45d0ce50e1952e7acbbc4dc56dc88eb7","name":"Leif Terje Nilsen","registered_at":"2026-06-16T15:15:55Z","symbol":"NIM1092021","token_address":"0x155250de96528c4af662fa4a611a916fffe47fc3","type":"artist","uuid":"49b46a8b-feed-4e93-8210-fc5db417662c"}
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 0x351bde4b0627d7d5072c2a2b4b6a91dd45d0ce50e1952e7acbbc4dc56dc88eb7. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/49b46a8b-feed-4e93-8210-fc5db417662c.json and https://artists.proofprofile.net/proofs/artist/49b46a8b-feed-4e93-8210-fc5db417662c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:10:43Z
  text: {"copyright_id":"0x351bde4b0627d7d5072c2a2b4b6a91dd45d0ce50e1952e7acbbc4dc56dc88eb7","name":"Leif Terje Nilsen","registered_at":"2026-06-16T15:15:55Z","symbol":"NIM1092021","token_address":"0x155250de96528c4af662fa4a611a916fffe47fc3","type":"artist","uuid":"49b46a8b-feed-4e93-8210-fc5db417662c"}
album: Et under
  type: MusicAlbum
  date published: 2021-07-19
album: Kjærest
  type: MusicAlbum
  date published: 2025-06-12
  track: Kjærest
    type: MusicRecording
    duration: PT4M12S
    duration ms: 252409
    explicit: false
    by artist: Leif Terje Nilsen
    in album: Kjærest
      type: MusicAlbum
      date published: 2025-06-12
    isrc code: NO2RW2504010
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-15T20:00:41+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x2838607c1e13f2e54a9a863c190fc80503de01fd00ac442be8faeb036bc5ec10
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958194
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958194
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NO2RW2504010
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-15T23:02:27Z
    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 0x2838607c1e13f2e54a9a863c190fc80503de01fd00ac442be8faeb036bc5ec10. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T23:02:27Z), 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/NO2RW2504010.
      date published: 2026-07-15T23:02:27Z
    audio: Kjærest
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 74.97
      additional property: Musical Key
        type: PropertyValue
        value: 7
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.573
      additional property: Energy
        type: PropertyValue
        value: 0.204
      additional property: Speechiness
        type: PropertyValue
        value: 0.034
      additional property: Acousticness
        type: PropertyValue
        value: 0.763
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.344
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.268
      additional property: Loudness (dB)
        type: PropertyValue
        value: -10.887
      additional property: Key Name
        type: PropertyValue
        value: G
      additional property: Mode Name
        type: PropertyValue
        value: Major