Kuipers & Winter
type: MusicGroup
popularity: 40
followers: 1095
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x86a8d8b28afcbd39d191388c3bf8750b73c1c3e4cd443a907c94c086eaaf94ed
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953407
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953407
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/72e2249b-0087-40cd-91d0-db622cb01594.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/72e2249b-0087-40cd-91d0-db622cb01594.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/72e2249b-0087-40cd-91d0-db622cb01594
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-12T19:24:56Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x86a8d8b28afcbd39d191388c3bf8750b73c1c3e4cd443a907c94c086eaaf94ed","name":"Kuipers & Winter","registered_at":"2026-06-12T00:54:50Z","symbol":"NIM0148671","token_address":"0x862d48a2aa01e3d30218ecee28379ca722baf0d9","type":"artist","uuid":"72e2249b-0087-40cd-91d0-db622cb01594"}
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 0x86a8d8b28afcbd39d191388c3bf8750b73c1c3e4cd443a907c94c086eaaf94ed. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/72e2249b-0087-40cd-91d0-db622cb01594.json and https://artists.proofprofile.net/proofs/artist/72e2249b-0087-40cd-91d0-db622cb01594.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-12T19:24:56Z
  text: {"copyright_id":"0x86a8d8b28afcbd39d191388c3bf8750b73c1c3e4cd443a907c94c086eaaf94ed","name":"Kuipers & Winter","registered_at":"2026-06-12T00:54:50Z","symbol":"NIM0148671","token_address":"0x862d48a2aa01e3d30218ecee28379ca722baf0d9","type":"artist","uuid":"72e2249b-0087-40cd-91d0-db622cb01594"}
album: Eastern Winds
  type: MusicAlbum
  date published: 2020-08-14
album: Maybe We'll Meet Again
  type: MusicAlbum
  date published: 2020-08-28
album: O Christmas Tree
  type: MusicAlbum
  date published: 2020-09-29
album: Lo, How A Rose E'er Blooming
  type: MusicAlbum
  date published: 2020-09-29
  track: Lo, How A Rose E'er Blooming
    type: MusicRecording
    duration: PT2M19S
    duration ms: 139785
    explicit: false
    by artist: Kuipers & Winter
    in album: Lo, How A Rose E'er Blooming
      type: MusicAlbum
      date published: 2020-09-29
    isrc code: SE5IB2001533
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-20T23:05:11+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x31f938db22dbe68d4932282d3390bd3eb30eb814ebbc121b748473981464eb87
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958942
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958942
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SE5IB2001533
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-21T00:24:07Z
    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 0x31f938db22dbe68d4932282d3390bd3eb30eb814ebbc121b748473981464eb87. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/SE5IB2001533.
      date published: 2026-07-21T00:24:07Z
    audio: Lo, How A Rose E'er Blooming
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 86.305
      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: 0.391
      additional property: Energy
        type: PropertyValue
        value: 0.089
      additional property: Speechiness
        type: PropertyValue
        value: 0.035
      additional property: Acousticness
        type: PropertyValue
        value: 0.913
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.036
      additional property: Liveness
        type: PropertyValue
        value: 0.111
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.201
      additional property: Loudness (dB)
        type: PropertyValue
        value: -18.333
      additional property: Key Name
        type: PropertyValue
        value: G
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Midnight Midtown Jazz (Rain)
  type: MusicAlbum
  date published: 2023-01-04
album: chemin de la lune
  type: MusicAlbum
  date published: 2023-02-24
album: Moonlit Melodies
  type: MusicAlbum
  date published: 2023-08-17
album: Coventry carol
  type: MusicAlbum
  date published: 2023-09-29
album: Santa tell me
  type: MusicAlbum
  date published: 2023-10-13
album: This Morning
  type: MusicAlbum
  date published: 2024-02-09
album: Mellow Mood Dreams
  type: MusicAlbum
  date published: 2024-04-26
album: 3AM Streetlights
  type: MusicAlbum
  date published: 2025-05-09