Anke Hachfeld
type: MusicGroup
popularity: 2
followers: 28
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x20804162db03174d8267761932b02a0b67e1c097f6efd8ed959aa434851628dd
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954346
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954346
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/995ac4e3-4f28-4c59-b713-81f232af65f7.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/995ac4e3-4f28-4c59-b713-81f232af65f7.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/995ac4e3-4f28-4c59-b713-81f232af65f7
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-19T03:51:26Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x20804162db03174d8267761932b02a0b67e1c097f6efd8ed959aa434851628dd","name":"Anke Hachfeld","registered_at":"2026-06-17T19:07:24Z","symbol":"NIM1490724","token_address":"0xd5b1b74e6c877fab410b1b7368a3a4d1f5f851fe","type":"artist","uuid":"995ac4e3-4f28-4c59-b713-81f232af65f7"}
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 0x20804162db03174d8267761932b02a0b67e1c097f6efd8ed959aa434851628dd. Chain 2 (Bitcoin): anchored in block 954346 (2026-06-19T03:51:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/995ac4e3-4f28-4c59-b713-81f232af65f7.json and https://artists.proofprofile.net/proofs/artist/995ac4e3-4f28-4c59-b713-81f232af65f7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-19T03:51:26Z
  text: {"copyright_id":"0x20804162db03174d8267761932b02a0b67e1c097f6efd8ed959aa434851628dd","name":"Anke Hachfeld","registered_at":"2026-06-17T19:07:24Z","symbol":"NIM1490724","token_address":"0xd5b1b74e6c877fab410b1b7368a3a4d1f5f851fe","type":"artist","uuid":"995ac4e3-4f28-4c59-b713-81f232af65f7"}
album: Father's Eyes
  type: MusicAlbum
  date published: 2025-04-24
  track: Father's Eyes
    type: MusicRecording
    duration: PT3M37S
    duration ms: 217455
    explicit: false
    by artist: Anke Hachfeld
    in album: Father's Eyes
      type: MusicAlbum
      date published: 2025-04-24
    isrc code: DEKR72500021
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-05T01:44:43+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xe989edbd43ab166d6b79aa1f525e57b6911d9e65fffe21fe342f91d55434c850
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956790
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956790
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEKR72500021
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-20T00:18:19Z
    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 0xe989edbd43ab166d6b79aa1f525e57b6911d9e65fffe21fe342f91d55434c850. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-20T00:18:19Z), 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/DEKR72500021.
      date published: 2026-07-20T00:18:19Z
    audio: Father's Eyes
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 129.104
      additional property: Musical Key
        type: PropertyValue
        value: 9
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 5
      additional property: Danceability
        type: PropertyValue
        value: 0.311
      additional property: Energy
        type: PropertyValue
        value: 0.099
      additional property: Speechiness
        type: PropertyValue
        value: 0.035
      additional property: Acousticness
        type: PropertyValue
        value: 0.974
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.005
      additional property: Liveness
        type: PropertyValue
        value: 0.125
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.181
      additional property: Loudness (dB)
        type: PropertyValue
        value: -15.078
      additional property: Key Name
        type: PropertyValue
        value: A
      additional property: Mode Name
        type: PropertyValue
        value: Major