Mathias Fekjær
type: MusicGroup
genre: dub
popularity: 5
followers: 332
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x7dc04d2ab02fea619157f0ffd62a8496671bef8eb8b2c0f45d5357fb2129df34
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/902f8fdf-05b0-4537-a082-9cfdb33ae244.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/902f8fdf-05b0-4537-a082-9cfdb33ae244.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/902f8fdf-05b0-4537-a082-9cfdb33ae244
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-19T03:22:39Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x7dc04d2ab02fea619157f0ffd62a8496671bef8eb8b2c0f45d5357fb2129df34","name":"Mathias Fekjær","registered_at":"2026-06-17T15:43:03Z","symbol":"NIM1441950","token_address":"0xaa69042203cc7f7a1388be4915b620a6684fc177","type":"artist","uuid":"902f8fdf-05b0-4537-a082-9cfdb33ae244"}
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 0x7dc04d2ab02fea619157f0ffd62a8496671bef8eb8b2c0f45d5357fb2129df34. 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/902f8fdf-05b0-4537-a082-9cfdb33ae244.json and https://artists.proofprofile.net/proofs/artist/902f8fdf-05b0-4537-a082-9cfdb33ae244.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-19T03:22:39Z
  text: {"copyright_id":"0x7dc04d2ab02fea619157f0ffd62a8496671bef8eb8b2c0f45d5357fb2129df34","name":"Mathias Fekjær","registered_at":"2026-06-17T15:43:03Z","symbol":"NIM1441950","token_address":"0xaa69042203cc7f7a1388be4915b620a6684fc177","type":"artist","uuid":"902f8fdf-05b0-4537-a082-9cfdb33ae244"}
album: Growth
  type: MusicAlbum
  date published: 2013-10-23
  track: A Passage In Time
    type: MusicRecording
    duration: PT5M28S
    duration ms: 328252
    explicit: false
    by artist: Mathias Fekjær
    in album: Growth
      type: MusicAlbum
      date published: 2013-10-23
    genre: dub
    isrc code: QMPKX1319502
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-16T01:06:23+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xe376579b981555de12355b186f76484a606127abe3b04d0fb3da36cfb58b77c0
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958224
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958224
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMPKX1319502
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-16T02:28:43Z
    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 0xe376579b981555de12355b186f76484a606127abe3b04d0fb3da36cfb58b77c0. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QMPKX1319502.
      date published: 2026-07-16T02:28:43Z
    audio: A Passage In Time
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 180.075
      additional property: Musical Key
        type: PropertyValue
        value: 0
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.595
      additional property: Energy
        type: PropertyValue
        value: 0.43
      additional property: Speechiness
        type: PropertyValue
        value: 0.039
      additional property: Acousticness
        type: PropertyValue
        value: 0.03
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.839
      additional property: Liveness
        type: PropertyValue
        value: 0.061
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.129
      additional property: Loudness (dB)
        type: PropertyValue
        value: -11.286
      additional property: Key Name
        type: PropertyValue
        value: C
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Raging Bitches (Original Mix)
  type: MusicAlbum
  date published: 2013-10-23
album: Voyager Dans L'espace (Original Mix)
  type: MusicAlbum
  date published: 2013-10-23
album: Terminal Velocity
  type: MusicAlbum
  date published: 2013-10-23
album: Pinky And The Brain (Achromia Sights Remix)
  type: MusicAlbum
  date published: 2013-10-24
album: You Are The Big Bang
  type: MusicAlbum
  date published: 2013-10-24
album: Reference
  type: MusicAlbum
  date published: 2013-10-25
album: Skin
  type: MusicAlbum
  date published: 2014-02-19
album: Eat, Sleep, Sit, Repeat
  type: MusicAlbum
  date published: 2015-03-31
album: Sarpa Salpa
  type: MusicAlbum
  date published: 2017-07-26
album: TwentyTwenty
  type: MusicAlbum
  date published: 2020-03-19