Niels Feijen
type: MusicGroup
genre: disco house
genre: tech house
description: Niels Feijen (born 3 February 1977) is a Dutch professional pool player. Nicknamed The Terminator, he won the WPA World Nine-ball Championship in 2014. Career In 2001, Feijen reached the finals of a
popularity: 4
followers: 270
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xfc1d0dfd0f38382ef08107262b5df093f22c62507f5b15709b42325b4b6f8544
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954533
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954533
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/a563f362-8750-4ea5-a8f2-a47174712bde.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/a563f362-8750-4ea5-a8f2-a47174712bde.json
additional property: OTSVerificationAPI
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  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/a563f362-8750-4ea5-a8f2-a47174712bde
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T08:57:02Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xfc1d0dfd0f38382ef08107262b5df093f22c62507f5b15709b42325b4b6f8544","name":"Niels Feijen","registered_at":"2026-06-20T07:23:44Z","symbol":"NIM1552175","token_address":"0x277817d27cf0ab3a95dc9b359f59cade1508bb9f","type":"artist","uuid":"a563f362-8750-4ea5-a8f2-a47174712bde"}
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 0xfc1d0dfd0f38382ef08107262b5df093f22c62507f5b15709b42325b4b6f8544. Chain 2 (Bitcoin): anchored in block 954533 (2026-06-20T08:57:02Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a563f362-8750-4ea5-a8f2-a47174712bde.json and https://artists.proofprofile.net/proofs/artist/a563f362-8750-4ea5-a8f2-a47174712bde.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T08:57:02Z
  text: {"copyright_id":"0xfc1d0dfd0f38382ef08107262b5df093f22c62507f5b15709b42325b4b6f8544","name":"Niels Feijen","registered_at":"2026-06-20T07:23:44Z","symbol":"NIM1552175","token_address":"0x277817d27cf0ab3a95dc9b359f59cade1508bb9f","type":"artist","uuid":"a563f362-8750-4ea5-a8f2-a47174712bde"}
album: Crispy EP
  type: MusicAlbum
  date published: 2020-05-15
album: Canto E.P.
  type: MusicAlbum
  date published: 2021-07-02
album: XTC Society
  type: MusicAlbum
  date published: 2022-07-29
album: Sifrés
  type: MusicAlbum
  date published: 2023-12-21
  track: Sifrés
    type: MusicRecording
    duration: PT2M30S
    duration ms: 150937
    explicit: false
    by artist: Niels Feijen
    in album: Sifrés
      type: MusicAlbum
      date published: 2023-12-21
    genre: disco house
    genre: tech house
    isrc code: GBLV62314464
    additional property: CopyrightID
    additional property: CopyrightStatus
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    additional property: OTSBitcoinBlockVerifyURL
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    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBLV62314464
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-18T13:44:16Z
    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 0xbd9e84f380912c318345c62d825e490758e72609224df2adfe56c9731abcf9da. Chain 2 (Bitcoin): anchored in block 958558 (2026-07-18T13:44:16Z), 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/GBLV62314464.
      date published: 2026-07-18T13:44:16Z
    audio: Sifrés
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 127.984
      additional property: Musical Key
        type: PropertyValue
        value: 10
      additional property: Mode (Major/Minor)
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        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.799
      additional property: Energy
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        value: 0.803
      additional property: Speechiness
        type: PropertyValue
        value: 0.057
      additional property: Acousticness
        type: PropertyValue
        value: 0
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.878
      additional property: Liveness
        type: PropertyValue
        value: 0.104
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.691
      additional property: Loudness (dB)
        type: PropertyValue
        value: -8.137
      additional property: Key Name
        type: PropertyValue
        value: Bb
      additional property: Mode Name
        type: PropertyValue
        value: Minor