H.M Kariuki
type: MusicGroup
genre: bongo flava
popularity: 12
followers: 3007
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x6f0a6a8968496482091a6f4d61a926b8ad0f90880f68593401cf6547534a2e0c
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953754
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953754
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/ad1f2550-cf7f-4525-8995-29325f5163b7.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/ad1f2550-cf7f-4525-8995-29325f5163b7.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/ad1f2550-cf7f-4525-8995-29325f5163b7
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T06:45:19Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x6f0a6a8968496482091a6f4d61a926b8ad0f90880f68593401cf6547534a2e0c","name":"H.M Kariuki","registered_at":"2026-06-14T22:42:48Z","symbol":"NIM0599552","token_address":"0xc9ac93e8ec30b55e79c7864145b04f0e685d6576","type":"artist","uuid":"ad1f2550-cf7f-4525-8995-29325f5163b7"}
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 0x6f0a6a8968496482091a6f4d61a926b8ad0f90880f68593401cf6547534a2e0c. Chain 2 (Bitcoin): anchored in block 953754 (2026-06-15T06:45:19Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ad1f2550-cf7f-4525-8995-29325f5163b7.json and https://artists.proofprofile.net/proofs/artist/ad1f2550-cf7f-4525-8995-29325f5163b7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T06:45:19Z
  text: {"copyright_id":"0x6f0a6a8968496482091a6f4d61a926b8ad0f90880f68593401cf6547534a2e0c","name":"H.M Kariuki","registered_at":"2026-06-14T22:42:48Z","symbol":"NIM0599552","token_address":"0xc9ac93e8ec30b55e79c7864145b04f0e685d6576","type":"artist","uuid":"ad1f2550-cf7f-4525-8995-29325f5163b7"}
album: Mwomboko Wa 1922
  type: MusicAlbum
  date published: 2021-07-23
  track: Nguina na Muhiki
    type: MusicRecording
    duration: PT4M34S
    duration ms: 274102
    explicit: false
    by artist: H.M Kariuki
    in album: Mwomboko Wa 1922
      type: MusicAlbum
      date published: 2021-07-23
    genre: bongo flava
    isrc code: GX3Q92133087
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-19T19:03:48+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x4e48f1a3d67150075550afde43f7d5b0f2f3b5bc1b0fe34a7cb2c9d507ea2bbc
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958771
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958771
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GX3Q92133087
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-19T22:03:34Z
    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 0x4e48f1a3d67150075550afde43f7d5b0f2f3b5bc1b0fe34a7cb2c9d507ea2bbc. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T22:03:34Z), 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/GX3Q92133087.
      date published: 2026-07-19T22:03:34Z
    audio: Nguina na Muhiki
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 114.639
      additional property: Musical Key
        type: PropertyValue
        value: 0
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 5
      additional property: Danceability
        type: PropertyValue
        value: 0.74
      additional property: Energy
        type: PropertyValue
        value: 0.473
      additional property: Speechiness
        type: PropertyValue
        value: 0.232
      additional property: Acousticness
        type: PropertyValue
        value: 0.67
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.076
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.914
      additional property: Loudness (dB)
        type: PropertyValue
        value: -10.543
      additional property: Key Name
        type: PropertyValue
        value: C
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Mwomboko 1940
  type: MusicAlbum
  date published: 2021-07-23