Ernst Langhout
type: MusicGroup
popularity: 7
followers: 131
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xdbb53ab0157f52c76c971e85dca4bf24015597866111346b012f190fc6cbcbff
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954650
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954650
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/da6fc467-29d6-4ba5-baba-e7a0d5f17157.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/da6fc467-29d6-4ba5-baba-e7a0d5f17157.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/da6fc467-29d6-4ba5-baba-e7a0d5f17157
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T04:51:12Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xdbb53ab0157f52c76c971e85dca4bf24015597866111346b012f190fc6cbcbff","name":"Ernst Langhout","registered_at":"2026-06-21T04:22:59Z","symbol":"NIM1818773","token_address":"0xa72af30b28d7f4b2376aa83e56cbdafe0aaa71ac","type":"artist","uuid":"da6fc467-29d6-4ba5-baba-e7a0d5f17157"}
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 0xdbb53ab0157f52c76c971e85dca4bf24015597866111346b012f190fc6cbcbff. Chain 2 (Bitcoin): anchored in block 954650 (2026-06-21T04:51:12Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/da6fc467-29d6-4ba5-baba-e7a0d5f17157.json and https://artists.proofprofile.net/proofs/artist/da6fc467-29d6-4ba5-baba-e7a0d5f17157.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T04:51:12Z
  text: {"copyright_id":"0xdbb53ab0157f52c76c971e85dca4bf24015597866111346b012f190fc6cbcbff","name":"Ernst Langhout","registered_at":"2026-06-21T04:22:59Z","symbol":"NIM1818773","token_address":"0xa72af30b28d7f4b2376aa83e56cbdafe0aaa71ac","type":"artist","uuid":"da6fc467-29d6-4ba5-baba-e7a0d5f17157"}
album: Dylan yn it Frysk 2
  type: MusicAlbum
  date published: 2005-10-01
album: Dylan yn it Frysk
  type: MusicAlbum
  date published: 2005-10-01
  track: Ruzjend yn` e wyn
    type: MusicRecording
    duration: PT4M13S
    duration ms: 253932
    explicit: false
    by artist: Ernst Langhout
    in album: Dylan yn it Frysk
      type: MusicAlbum
      date published: 2005-10-01
    isrc code: NLD230500073
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-21T05:43:33+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xb08ef1c4c29376158724af636c954d5615355b3b2a5bec5faa7cc250a28a71a5
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958975
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958975
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLD230500073
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-21T08:45:25Z
    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 0xb08ef1c4c29376158724af636c954d5615355b3b2a5bec5faa7cc250a28a71a5. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T08:45:25Z), 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/NLD230500073.
      date published: 2026-07-21T08:45:25Z
    audio: Ruzjend yn` e wyn
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 186.141
      additional property: Musical Key
        type: PropertyValue
        value: 2
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.298
      additional property: Energy
        type: PropertyValue
        value: 0.712
      additional property: Speechiness
        type: PropertyValue
        value: 0.057
      additional property: Acousticness
        type: PropertyValue
        value: 0.732
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.105
      additional property: Liveness
        type: PropertyValue
        value: 0.122
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.512
      additional property: Loudness (dB)
        type: PropertyValue
        value: -8.689
      additional property: Key Name
        type: PropertyValue
        value: D
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: The Irish Kitchen Table Tapes
  type: MusicAlbum
  date published: 2015-09-16
album: The Irish Kitchen Table Tapes
  type: MusicAlbum
  date published: 2015-09-16
album: Nea foar altyd
  type: MusicAlbum
  date published: 2017-03-29
album: The eye of the cyclone
  type: MusicAlbum
  date published: 2017-03-29
album: Lutske Laket
  type: MusicAlbum
  date published: 2017-08-10
album: Lutske Laket
  type: MusicAlbum
  date published: 2017-08-10
album: Heaven and hell
  type: MusicAlbum
  date published: 2018-12-08