Herbert Walker
type: MusicGroup
popularity: 6
followers: 471
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x86a386873f69e25c86357aa1013abcc78b34d6bf4025d72ac148c592350cef18
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/52d2f793-bc67-40db-b30f-f25655fdceb1.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/52d2f793-bc67-40db-b30f-f25655fdceb1.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/52d2f793-bc67-40db-b30f-f25655fdceb1
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:10:43Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x86a386873f69e25c86357aa1013abcc78b34d6bf4025d72ac148c592350cef18","name":"Herbert Walker","registered_at":"2026-06-16T18:46:03Z","symbol":"NIM1142156","token_address":"0xc1219028c8f4a1ece791da91f797ec953663527e","type":"artist","uuid":"52d2f793-bc67-40db-b30f-f25655fdceb1"}
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 0x86a386873f69e25c86357aa1013abcc78b34d6bf4025d72ac148c592350cef18. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/52d2f793-bc67-40db-b30f-f25655fdceb1.json and https://artists.proofprofile.net/proofs/artist/52d2f793-bc67-40db-b30f-f25655fdceb1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:10:43Z
  text: {"copyright_id":"0x86a386873f69e25c86357aa1013abcc78b34d6bf4025d72ac148c592350cef18","name":"Herbert Walker","registered_at":"2026-06-16T18:46:03Z","symbol":"NIM1142156","token_address":"0xc1219028c8f4a1ece791da91f797ec953663527e","type":"artist","uuid":"52d2f793-bc67-40db-b30f-f25655fdceb1"}
album: The Welcome Mat
  type: MusicAlbum
  date published: 2016-07-17
album: On Flat Earth
  type: MusicAlbum
  date published: 2018-05-17
album: Polar Pop
  type: MusicAlbum
  date published: 2022-02-25
album: Chinese Elevator
  type: MusicAlbum
  date published: 2022-03-11
album: Up Down
  type: MusicAlbum
  date published: 2022-09-16
album: Brazilian Vaudevillian
  type: MusicAlbum
  date published: 2022-10-07
album: How to Enjoy
  type: MusicAlbum
  date published: 2022-10-21
album: I'm Not Sorry
  type: MusicAlbum
  date published: 2025-01-03
  track: I'm Not Sorry
    type: MusicRecording
    duration: PT4M14S
    duration ms: 254830
    explicit: false
    by artist: Herbert Walker
    in album: I'm Not Sorry
      type: MusicAlbum
      date published: 2025-01-03
    isrc code: QZZ7W2431902
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-20T02:30:35+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x29198234bd435d35659dc737e5de461df8eae34cd9b20312ef2427ec39d6d065
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958823
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958823
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZZ7W2431902
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-20T05:32:20Z
    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 0x29198234bd435d35659dc737e5de461df8eae34cd9b20312ef2427ec39d6d065. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T05:32:20Z), 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/QZZ7W2431902.
      date published: 2026-07-20T05:32:20Z
    audio: I'm Not Sorry
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 94.596
      additional property: Musical Key
        type: PropertyValue
        value: 10
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.541
      additional property: Energy
        type: PropertyValue
        value: 0.587
      additional property: Speechiness
        type: PropertyValue
        value: 0.037
      additional property: Acousticness
        type: PropertyValue
        value: 0.334
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.406
      additional property: Liveness
        type: PropertyValue
        value: 0.056
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.546
      additional property: Loudness (dB)
        type: PropertyValue
        value: -7.286
      additional property: Key Name
        type: PropertyValue
        value: Bb
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Stealing from the Man
  type: MusicAlbum
  date published: 2025-01-31