De Boer Als Gastheer
type: MusicGroup
genre: polka
popularity: 2
followers: 24
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x04e381a657a8d702484615cb15b7b8e3e98b31b21951403fe97958894bc58173
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/5c72634c-ce87-4680-8a57-9ee7e50bd770.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/5c72634c-ce87-4680-8a57-9ee7e50bd770.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/5c72634c-ce87-4680-8a57-9ee7e50bd770
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:11:48Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x04e381a657a8d702484615cb15b7b8e3e98b31b21951403fe97958894bc58173","name":"De Boer Als Gastheer","registered_at":"2026-06-16T21:50:48Z","symbol":"NIM1186242","token_address":"0xcb96b132cc12353d59c2bba83383e93eb02cda16","type":"artist","uuid":"5c72634c-ce87-4680-8a57-9ee7e50bd770"}
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 0x04e381a657a8d702484615cb15b7b8e3e98b31b21951403fe97958894bc58173. 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/5c72634c-ce87-4680-8a57-9ee7e50bd770.json and https://artists.proofprofile.net/proofs/artist/5c72634c-ce87-4680-8a57-9ee7e50bd770.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
  text: {"copyright_id":"0x04e381a657a8d702484615cb15b7b8e3e98b31b21951403fe97958894bc58173","name":"De Boer Als Gastheer","registered_at":"2026-06-16T21:50:48Z","symbol":"NIM1186242","token_address":"0xcb96b132cc12353d59c2bba83383e93eb02cda16","type":"artist","uuid":"5c72634c-ce87-4680-8a57-9ee7e50bd770"}
album: Niet Zonder Ons
  type: MusicAlbum
  date published: 2019-12-01
  track: Niet Zonder Ons
    type: MusicRecording
    duration: PT4M0S
    duration ms: 240483
    explicit: false
    by artist: De Boer Als Gastheer
    in album: Niet Zonder Ons
      type: MusicAlbum
      date published: 2019-12-01
    genre: polka
    isrc code: QZK6Q1921227
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-20T05:39:26+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x458327f26e84ff03d6e6bd826b573d4c80ae7e1f119814ea638341fcf6bc19fc
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958834
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958834
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6Q1921227
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-20T05:55:47Z
    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 0x458327f26e84ff03d6e6bd826b573d4c80ae7e1f119814ea638341fcf6bc19fc. Chain 2 (Bitcoin): anchored in block 958834 (2026-07-20T05:55:47Z), 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/QZK6Q1921227.
      date published: 2026-07-20T05:55:47Z
    audio: Niet Zonder Ons
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 124.999
      additional property: Musical Key
        type: PropertyValue
        value: 11
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.644
      additional property: Energy
        type: PropertyValue
        value: 0.813
      additional property: Speechiness
        type: PropertyValue
        value: 0.061
      additional property: Acousticness
        type: PropertyValue
        value: 0.235
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.774
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.589
      additional property: Loudness (dB)
        type: PropertyValue
        value: -6.875
      additional property: Key Name
        type: PropertyValue
        value: B
      additional property: Mode Name
        type: PropertyValue
        value: Major