Kjell Åge Hartveit Karlsen
type: MusicGroup
popularity: 4
followers: 130
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xf71c70e6712024622188ec451ae34498aca8a3c5e61dc48e19d32e03427428d0
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954342
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954342
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/91559697-5366-416f-8b25-14e09e9b6acc.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/91559697-5366-416f-8b25-14e09e9b6acc.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/91559697-5366-416f-8b25-14e09e9b6acc
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-19T03:22:39Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xf71c70e6712024622188ec451ae34498aca8a3c5e61dc48e19d32e03427428d0","name":"Kjell Åge Hartveit Karlsen","registered_at":"2026-06-17T16:07:46Z","symbol":"NIM1447852","token_address":"0xb69db50db5f9f6825ea7e0ea70cb804ddd5cea29","type":"artist","uuid":"91559697-5366-416f-8b25-14e09e9b6acc"}
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 0xf71c70e6712024622188ec451ae34498aca8a3c5e61dc48e19d32e03427428d0. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/91559697-5366-416f-8b25-14e09e9b6acc.json and https://artists.proofprofile.net/proofs/artist/91559697-5366-416f-8b25-14e09e9b6acc.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-19T03:22:39Z
  text: {"copyright_id":"0xf71c70e6712024622188ec451ae34498aca8a3c5e61dc48e19d32e03427428d0","name":"Kjell Åge Hartveit Karlsen","registered_at":"2026-06-17T16:07:46Z","symbol":"NIM1447852","token_address":"0xb69db50db5f9f6825ea7e0ea70cb804ddd5cea29","type":"artist","uuid":"91559697-5366-416f-8b25-14e09e9b6acc"}
album: Summer Fields
  type: MusicAlbum
  date published: 2021-06-25
album: Eternity
  type: MusicAlbum
  date published: 2021-07-09
album: Á Mon Cher
  type: MusicAlbum
  date published: 2021-07-23
album: Á Mon Cher
  type: MusicAlbum
  date published: 2021-07-23
album: Désir
  type: MusicAlbum
  date published: 2021-08-06
album: Désir
  type: MusicAlbum
  date published: 2021-08-06
album: Home
  type: MusicAlbum
  date published: 2021-08-20
album: Tears of an Angel
  type: MusicAlbum
  date published: 2021-11-05
album: Tears of an Angel
  type: MusicAlbum
  date published: 2021-11-05
album: Italian Vineyards
  type: MusicAlbum
  date published: 2021-11-19
  track: Italian Vineyards
    type: MusicRecording
    duration: PT1M48S
    duration ms: 108111
    explicit: false
    by artist: Kjell Åge Hartveit Karlsen
    in album: Italian Vineyards
      type: MusicAlbum
      date published: 2021-11-19
    isrc code: NOM5A2128010
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-19T00:26:04+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xf4e7d188bf9908e3cd60f5570df12f7e3c18887c6c38581c60675fc1f6089d2b
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958690
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958690
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NOM5A2128010
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-19T07:14:39Z
    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 0xf4e7d188bf9908e3cd60f5570df12f7e3c18887c6c38581c60675fc1f6089d2b. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/NOM5A2128010.
      date published: 2026-07-19T07:14:39Z
    audio: Italian Vineyards
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 110.087
      additional property: Musical Key
        type: PropertyValue
        value: 4
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.819
      additional property: Energy
        type: PropertyValue
        value: 0.282
      additional property: Speechiness
        type: PropertyValue
        value: 0.038
      additional property: Acousticness
        type: PropertyValue
        value: 0.965
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.935
      additional property: Liveness
        type: PropertyValue
        value: 0.108
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.506
      additional property: Loudness (dB)
        type: PropertyValue
        value: -11.952
      additional property: Key Name
        type: PropertyValue
        value: E
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: Brand New Day
  type: MusicAlbum
  date published: 2022-02-25
album: A Groovy Kind of Love
  type: MusicAlbum
  date published: 2022-11-17
album: Brand New Day
  type: MusicAlbum
  date published: 2024-10-01
album: Full Circle
  type: MusicAlbum
  date published: 2025-02-07