David Hilderhoff
type: MusicGroup
popularity: 3
followers: 52
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x452c2f495fd71ad6744c06b9ac260ea5e9e2f4a8de3914d43f71cfec2c3fc9d7
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954065
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954065
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/55252bd9-3186-40ea-b7c0-52413a8eb014.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/55252bd9-3186-40ea-b7c0-52413a8eb014.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/55252bd9-3186-40ea-b7c0-52413a8eb014
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:10:43Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x452c2f495fd71ad6744c06b9ac260ea5e9e2f4a8de3914d43f71cfec2c3fc9d7","name":"David Hilderhoff","registered_at":"2026-06-16T19:21:12Z","symbol":"NIM1150537","token_address":"0x3fad273b4bae8668cca8c42d1ef7a729d7da509d","type":"artist","uuid":"55252bd9-3186-40ea-b7c0-52413a8eb014"}
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 0x452c2f495fd71ad6744c06b9ac260ea5e9e2f4a8de3914d43f71cfec2c3fc9d7. 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/55252bd9-3186-40ea-b7c0-52413a8eb014.json and https://artists.proofprofile.net/proofs/artist/55252bd9-3186-40ea-b7c0-52413a8eb014.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
  text: {"copyright_id":"0x452c2f495fd71ad6744c06b9ac260ea5e9e2f4a8de3914d43f71cfec2c3fc9d7","name":"David Hilderhoff","registered_at":"2026-06-16T19:21:12Z","symbol":"NIM1150537","token_address":"0x3fad273b4bae8668cca8c42d1ef7a729d7da509d","type":"artist","uuid":"55252bd9-3186-40ea-b7c0-52413a8eb014"}
album: Lesson In Letting Go
  type: MusicAlbum
  date published: 2025-01-24
  track: Lesson In Letting Go
    type: MusicRecording
    duration: PT3M19S
    duration ms: 199749
    explicit: false
    by artist: David Hilderhoff
    in album: Lesson In Letting Go
      type: MusicAlbum
      date published: 2025-01-24
    isrc code: QZZ7T2440348
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-04T19:57:23+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x4d171e26e3db8e587857c64ed56664e0be9859f232f57cb6525b0cede36ff7df
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956738
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956738
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZZ7T2440348
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-05T04:47:21Z
    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 0x4d171e26e3db8e587857c64ed56664e0be9859f232f57cb6525b0cede36ff7df. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZZ7T2440348.
      date published: 2026-07-05T04:47:21Z
    audio: Lesson In Letting Go
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 160.187
      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: 0.49
      additional property: Energy
        type: PropertyValue
        value: 0.547
      additional property: Speechiness
        type: PropertyValue
        value: 0.037
      additional property: Acousticness
        type: PropertyValue
        value: 0.056
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.194
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.218
      additional property: Loudness (dB)
        type: PropertyValue
        value: -6.034
      additional property: Key Name
        type: PropertyValue
        value: D
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Messiah
  type: MusicAlbum
  date published: 2025-04-18
album: Maria
  type: MusicAlbum
  date published: 2025-09-26