Fem Lange
type: MusicGroup
popularity: 5
followers: 232
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xa2f3c64bc65cc83ec37fa68baf9a75b032ba968e438e486b0810c659e16bea8a
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954066
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954066
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/631f5c84-fa28-4b87-b9f7-ec875ab8d78c.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/631f5c84-fa28-4b87-b9f7-ec875ab8d78c.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/631f5c84-fa28-4b87-b9f7-ec875ab8d78c
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:11:48Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xa2f3c64bc65cc83ec37fa68baf9a75b032ba968e438e486b0810c659e16bea8a","name":"Fem Lange","registered_at":"2026-06-17T00:05:46Z","symbol":"NIM1218438","token_address":"0x5e29350390da5a68754d0dbfef8d2bba54ff0570","type":"artist","uuid":"631f5c84-fa28-4b87-b9f7-ec875ab8d78c"}
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 0xa2f3c64bc65cc83ec37fa68baf9a75b032ba968e438e486b0810c659e16bea8a. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/631f5c84-fa28-4b87-b9f7-ec875ab8d78c.json and https://artists.proofprofile.net/proofs/artist/631f5c84-fa28-4b87-b9f7-ec875ab8d78c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
  text: {"copyright_id":"0xa2f3c64bc65cc83ec37fa68baf9a75b032ba968e438e486b0810c659e16bea8a","name":"Fem Lange","registered_at":"2026-06-17T00:05:46Z","symbol":"NIM1218438","token_address":"0x5e29350390da5a68754d0dbfef8d2bba54ff0570","type":"artist","uuid":"631f5c84-fa28-4b87-b9f7-ec875ab8d78c"}
album: No Igjæn
  type: MusicAlbum
  date published: 2018-10-31
album: Koss Vei Ska Vi Gå
  type: MusicAlbum
  date published: 2019-11-04
album: Fem Lange
  type: MusicAlbum
  date published: 2022-09-02
album: Flammen i Mæ
  type: MusicAlbum
  date published: 2024-05-10
  track: Flammen i mæ
    type: MusicRecording
    duration: PT3M11S
    duration ms: 191428
    explicit: false
    by artist: Fem Lange
    in album: Flammen i Mæ
      type: MusicAlbum
      date published: 2024-05-10
    isrc code: QM6N22416286
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-22T11:51:38+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x45864e7677e0e9270dd454039eb360339696d5c40cc27d4f5bc0ef7b705814c3
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 959128
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/959128
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM6N22416286
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-22T12:33:25Z
    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 0x45864e7677e0e9270dd454039eb360339696d5c40cc27d4f5bc0ef7b705814c3. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/QM6N22416286.
      date published: 2026-07-22T12:33:25Z
    audio: Flammen i mæ
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 146.893
      additional property: Musical Key
        type: PropertyValue
        value: 2
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.523
      additional property: Energy
        type: PropertyValue
        value: 0.832
      additional property: Speechiness
        type: PropertyValue
        value: 0.047
      additional property: Acousticness
        type: PropertyValue
        value: 0.302
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.313
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.689
      additional property: Loudness (dB)
        type: PropertyValue
        value: -9.313
      additional property: Key Name
        type: PropertyValue
        value: D
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Ut Å Fly
  type: MusicAlbum
  date published: 2024-06-07
album: Kvar Gang (Du E Her)
  type: MusicAlbum
  date published: 2024-07-12
album: Over fjellan
  type: MusicAlbum
  date published: 2024-09-06