André Kooistra
type: MusicGroup
popularity: 7
followers: 629
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x4a5c37142b37e94d8d52bbd01b9e832209bf11d1005ad858f8dca52190793516
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954667
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954667
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/cd129295-1924-4541-b9e2-3a90aab0e0e5.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/cd129295-1924-4541-b9e2-3a90aab0e0e5.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/cd129295-1924-4541-b9e2-3a90aab0e0e5
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T07:29:20Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x4a5c37142b37e94d8d52bbd01b9e832209bf11d1005ad858f8dca52190793516","name":"André Kooistra","registered_at":"2026-06-20T23:32:47Z","symbol":"NIM1749262","token_address":"0x66b1fdf82993e59eb796d797281c653049423988","type":"artist","uuid":"cd129295-1924-4541-b9e2-3a90aab0e0e5"}
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 0x4a5c37142b37e94d8d52bbd01b9e832209bf11d1005ad858f8dca52190793516. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cd129295-1924-4541-b9e2-3a90aab0e0e5.json and https://artists.proofprofile.net/proofs/artist/cd129295-1924-4541-b9e2-3a90aab0e0e5.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
  date published: 2026-06-21T07:29:20Z
  text: {"copyright_id":"0x4a5c37142b37e94d8d52bbd01b9e832209bf11d1005ad858f8dca52190793516","name":"André Kooistra","registered_at":"2026-06-20T23:32:47Z","symbol":"NIM1749262","token_address":"0x66b1fdf82993e59eb796d797281c653049423988","type":"artist","uuid":"cd129295-1924-4541-b9e2-3a90aab0e0e5"}
album: Dan Ga Je Maar (2015)
  type: MusicAlbum
  date published: 2015-12-05
album: Ursula ik mis je
  type: MusicAlbum
  date published: 2016-12-11
album: Ursula ik mis je
  type: MusicAlbum
  date published: 2016-12-13
album: Hoe Jij Het Leven Leeft
  type: MusicAlbum
  date published: 2017-03-17
album: Als Je Bij Me Bent
  type: MusicAlbum
  date published: 2017-11-08
album: Want als je me nou zou zien
  type: MusicAlbum
  date published: 2018-05-04
album: Want als je me nou zou zien
  type: MusicAlbum
  date published: 2018-05-04
album: Ik ben weer vrijgezel
  type: MusicAlbum
  date published: 2018-08-14
album: Ik ben weer vrijgezel
  type: MusicAlbum
  date published: 2018-08-14
album: Ik ben weer vrijgezel (Orkestband)
  type: MusicAlbum
  date published: 2018-08-15
album: Gek op jou
  type: MusicAlbum
  date published: 2019-03-16
album: Gek op jou
  type: MusicAlbum
  date published: 2019-03-16
album: Lang leve het leven!
  type: MusicAlbum
  date published: 2019-11-10
album: Lang leve het leven!
  type: MusicAlbum
  date published: 2019-11-10
album: Huilen is voor jou te laat
  type: MusicAlbum
  date published: 2020-01-17
album: Huilen is voor jou te laat
  type: MusicAlbum
  date published: 2020-01-17
album: Want als je me nou zou zien
  type: MusicAlbum
  date published: 2020-03-16
album: Ik krijg een heel apart gevoel van binnen
  type: MusicAlbum
  date published: 2020-03-18
album: Ik krijg een heel apart gevoel van binnen
  type: MusicAlbum
  date published: 2020-03-18
album: Want als je me nou zou zien
  type: MusicAlbum
  date published: 2020-03-20
album: Zeven Brieven
  type: MusicAlbum
  date published: 2020-07-01
album: 7 Brieven
  type: MusicAlbum
  date published: 2020-07-01
album: Werelddag
  type: MusicAlbum
  date published: 2020-11-11
album: Vier Elke Dag
  type: MusicAlbum
  date published: 2021-04-21
album: Als iemand van je houdt
  type: MusicAlbum
  date published: 2021-06-04
album: Kijk niet achterom
  type: MusicAlbum
  date published: 2022-03-04
album: Feestje
  type: MusicAlbum
  date published: 2022-11-11
album: Ik Kan Niet Wachten Tot Het Weekend Is
  type: MusicAlbum
  date published: 2023-03-10
  track: Ik Kan Niet Wachten Tot Het Weekend Is
    type: MusicRecording
    duration: PT3M5S
    duration ms: 185390
    explicit: false
    by artist: André Kooistra
    in album: Ik Kan Niet Wachten Tot Het Weekend Is
      type: MusicAlbum
      date published: 2023-03-10
    isrc code: NLD7P2300010
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-21T13:24:10+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x21456a6366abd9680969ec47823d8165f6dfe384ef5aa4f1e9b12f2a556554b1
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 959013
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/959013
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLD7P2300010
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-21T13:39:11Z
    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 0x21456a6366abd9680969ec47823d8165f6dfe384ef5aa4f1e9b12f2a556554b1. Chain 2 (Bitcoin): anchored in block 959013 (2026-07-21T13:39:11Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLD7P2300010 — a six-check JSON result.
      date published: 2026-07-21T13:39:11Z
    audio: Ik Kan Niet Wachten Tot Het Weekend Is
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 134.025
      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: 0.752
      additional property: Energy
        type: PropertyValue
        value: 0.927
      additional property: Speechiness
        type: PropertyValue
        value: 0.032
      additional property: Acousticness
        type: PropertyValue
        value: 0.157
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.125
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.972
      additional property: Loudness (dB)
        type: PropertyValue
        value: -5.298
      additional property: Key Name
        type: PropertyValue
        value: G
      additional property: Mode Name
album: Mag Ik Een kus Van Je Lenen
album: Tranen Zijn Niet Alleen Om Te Huilen
album: Je haalt het beste in mij naar boven

Mode Name
type: PropertyValue
value: Major

Mag Ik Een kus Van Je Lenen
type: MusicAlbum
date published: 2024-04-05

Tranen Zijn Niet Alleen Om Te Huilen
type: MusicAlbum
date published: 2024-09-20

Je haalt het beste in mij naar boven
type: MusicAlbum
date published: 2025-04-25