Ernest Hart
type: MusicGroup
popularity: 2
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x3dcb990c2bb4d649819f0f2f4669dc55d7e5c31a9e4f346bdea9ad4f8155b195
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953932
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953932
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/1fa63bce-281d-4194-923e-2d269c82c5d3.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/1fa63bce-281d-4194-923e-2d269c82c5d3.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/1fa63bce-281d-4194-923e-2d269c82c5d3
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T11:10:43Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x3dcb990c2bb4d649819f0f2f4669dc55d7e5c31a9e4f346bdea9ad4f8155b195","name":"Ernest Hart","registered_at":"2026-06-16T00:34:10Z","symbol":"NIM0881530","token_address":"0x41bead3134ea9e228199b80c2b13a42f0810368b","type":"artist","uuid":"1fa63bce-281d-4194-923e-2d269c82c5d3"}
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 0x3dcb990c2bb4d649819f0f2f4669dc55d7e5c31a9e4f346bdea9ad4f8155b195. Chain 2 (Bitcoin): anchored in block 953932 (2026-06-16T11:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1fa63bce-281d-4194-923e-2d269c82c5d3.json and https://artists.proofprofile.net/proofs/artist/1fa63bce-281d-4194-923e-2d269c82c5d3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T11:10:43Z
  text: {"copyright_id":"0x3dcb990c2bb4d649819f0f2f4669dc55d7e5c31a9e4f346bdea9ad4f8155b195","name":"Ernest Hart","registered_at":"2026-06-16T00:34:10Z","symbol":"NIM0881530","token_address":"0x41bead3134ea9e228199b80c2b13a42f0810368b","type":"artist","uuid":"1fa63bce-281d-4194-923e-2d269c82c5d3"}
album: Pinpond Haven
  type: MusicAlbum
  date published: 2022-02-10
album: The Bare Isle
  type: MusicAlbum
  date published: 2022-02-14
  track: The Bare Isle
    type: MusicRecording
    duration: PT0M42S
    duration ms: 42151
    explicit: false
    by artist: Ernest Hart
    in album: The Bare Isle
      type: MusicAlbum
      date published: 2022-02-14
    isrc code: QZTLA2240331
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-18T15:17:46+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x2e3dc773e3713be05710b3fc3ac4466db47b2697cb31685eeeb5df9ae23ec685
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958568
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958568
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTLA2240331
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-18T15:23:47Z
    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 0x2e3dc773e3713be05710b3fc3ac4466db47b2697cb31685eeeb5df9ae23ec685. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/QZTLA2240331.
      date published: 2026-07-18T15:23:47Z
    audio: The Bare Isle
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 40.415
      additional property: Musical Key
        type: PropertyValue
        value: 8
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 3
      additional property: Danceability
        type: PropertyValue
        value: 0.355
      additional property: Energy
        type: PropertyValue
        value: 0.492
      additional property: Speechiness
        type: PropertyValue
        value: 0.041
      additional property: Acousticness
        type: PropertyValue
        value: 0
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.753
      additional property: Liveness
        type: PropertyValue
        value: 0.429
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.044
      additional property: Loudness (dB)
        type: PropertyValue
        value: -10.228
      additional property: Key Name
        type: PropertyValue
        value: Ab
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: New Sport
  type: MusicAlbum
  date published: 2025-02-28