Ger. Drachtster Mannenkoor
type: MusicGroup
popularity: 9
followers: 63
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x601ff689d8188fb92b00d537f4aa4a3a06299f763eeef22da003b5282ae4bd37
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/6fc8d046-6fa3-4047-9a11-4e5b0432cb2c.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/6fc8d046-6fa3-4047-9a11-4e5b0432cb2c.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/6fc8d046-6fa3-4047-9a11-4e5b0432cb2c
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:11:48Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x601ff689d8188fb92b00d537f4aa4a3a06299f763eeef22da003b5282ae4bd37","name":"Ger. Drachtster Mannenkoor","registered_at":"2026-06-17T04:30:41Z","symbol":"NIM1281661","token_address":"0x9c3e83b32c6fa5ecf2f20704c2d2ec3696f56e06","type":"artist","uuid":"6fc8d046-6fa3-4047-9a11-4e5b0432cb2c"}
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 0x601ff689d8188fb92b00d537f4aa4a3a06299f763eeef22da003b5282ae4bd37. 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/6fc8d046-6fa3-4047-9a11-4e5b0432cb2c.json and https://artists.proofprofile.net/proofs/artist/6fc8d046-6fa3-4047-9a11-4e5b0432cb2c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
  text: {"copyright_id":"0x601ff689d8188fb92b00d537f4aa4a3a06299f763eeef22da003b5282ae4bd37","name":"Ger. Drachtster Mannenkoor","registered_at":"2026-06-17T04:30:41Z","symbol":"NIM1281661","token_address":"0x9c3e83b32c6fa5ecf2f20704c2d2ec3696f56e06","type":"artist","uuid":"6fc8d046-6fa3-4047-9a11-4e5b0432cb2c"}
album: Oratorium Schepping
  type: MusicAlbum
  date published: 2010
track: Ik bouw op U
  type: MusicRecording
  duration: PT5M26S
  duration ms: 326693
  explicit: false
  by artist: Ger. Drachtster Mannenkoor
  by artist: Bert van de Wetering
  by artist: Mariëlle Nieuwenhuis
  by artist: John Bredewout
  by artist: Jorrtt Woudt
  in album: Geliefde Liederen uit het verzoek programma "Wens"
    type: MusicAlbum
    date published: 2016-11-17
  popularity: 3
  isrc code: QMBZ91613019
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-07T19:19:31+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xa3a0e0b9904c5820e46959328b6217b31aedad4aa61b07a4d7d29b1963a76088
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 957120
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/957120
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMBZ91613019
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-08T03:22:41Z
  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 0xa3a0e0b9904c5820e46959328b6217b31aedad4aa61b07a4d7d29b1963a76088. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QMBZ91613019.
    date published: 2026-07-08T03:22:41Z
  audio: Ik bouw op U
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 105.227
    additional property: Musical Key
      type: PropertyValue
      value: 8
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
      type: PropertyValue
      value: 0.103
    additional property: Energy
      type: PropertyValue
      value: 0.247
    additional property: Speechiness
      type: PropertyValue
      value: 0.034
    additional property: Acousticness
      type: PropertyValue
      value: 0.986
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.948
    additional property: Liveness
      type: PropertyValue
      value: 0.14
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.054
    additional property: Loudness (dB)
      type: PropertyValue
      value: -20.442
    additional property: Key Name
      type: PropertyValue
      value: Ab
    additional property: Mode Name
      type: PropertyValue
      value: Major