Duo De Hen3ko's
type: MusicGroup
popularity: 6
followers: 25
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xf3c8b6cbfb94b058539785ba2acf79d4141330b5fd570f9764011557c079c050
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954046
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954046
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/4155c0f2-3ef2-4e5f-b532-5a095bae5dc4.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/4155c0f2-3ef2-4e5f-b532-5a095bae5dc4.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/4155c0f2-3ef2-4e5f-b532-5a095bae5dc4
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T04:53:03Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xf3c8b6cbfb94b058539785ba2acf79d4141330b5fd570f9764011557c079c050","name":"Duo De Hen3ko's","registered_at":"2026-06-16T12:21:53Z","symbol":"NIM1050495","token_address":"0x70bb140c5b84251fb376d3b2567d9c8d717d6960","type":"artist","uuid":"4155c0f2-3ef2-4e5f-b532-5a095bae5dc4"}
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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3c8b6cbfb94b058539785ba2acf79d4141330b5fd570f9764011557c079c050. Chain 2 (Bitcoin): anchored in block 954047 (2026-06-17T04:56:08Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4155c0f2-3ef2-4e5f-b532-5a095bae5dc4.json and https://artists.proofprofile.net/proofs/artist/4155c0f2-3ef2-4e5f-b532-5a095bae5dc4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T04:56:08Z
  text: {"copyright_id":"0xf3c8b6cbfb94b058539785ba2acf79d4141330b5fd570f9764011557c079c050","name":"Duo De Hen3ko's","registered_at":"2026-06-16T12:21:53Z","symbol":"NIM1050495","token_address":"0x70bb140c5b84251fb376d3b2567d9c8d717d6960","type":"artist","uuid":"4155c0f2-3ef2-4e5f-b532-5a095bae5dc4"}
album: Niet Meer Zeuren
  type: MusicAlbum
  date published: 2015-03-06
  track: Niet Meer Zeuren
    type: MusicRecording
    duration: PT3M21S
    duration ms: 201240
    explicit: false
    by artist: Duo De Hen3ko's
    in album: Niet Meer Zeuren
      type: MusicAlbum
      date published: 2015-03-06
    isrc code: TCACE1539334
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-12T22:51:40+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x656467e6a943f24cc5480c8669d648d9b8b59b46dd4e0101921828e13530eb94
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 957771
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/957771
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCACE1539334
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-12T23:27:28Z
    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
    subject of: OpenTimestamps Proof of Existence
      type: DigitalDocument
      encoding format: application/vnd.opentimestamps.ots
      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x656467e6a943f24cc5480c8669d648d9b8b59b46dd4e0101921828e13530eb94. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/TCACE1539334.
      date published: 2026-07-12T23:27:28Z
    audio: Niet Meer Zeuren
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 173.108
      additional property: Musical Key
        type: PropertyValue
        value: 0
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.548
      additional property: Energy
        type: PropertyValue
        value: 0.769
      additional property: Speechiness
        type: PropertyValue
        value: 0.043
      additional property: Acousticness
        type: PropertyValue
        value: 0.729
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.367
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.637
      additional property: Loudness (dB)
        type: PropertyValue
        value: -6.48
      additional property: Key Name
        type: PropertyValue
        value: C
      additional property: Mode Name
        type: PropertyValue
        value: Minor