Hassan Mapenzi
type: MusicGroup
genre: bongo flava
genre: singeli
popularity: 3
followers: 540
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x0f8705c3bce949a20d48f29f806caa01528fa8fcdc36f40d28a5493d9cf3ca2a
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954516
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954516
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/a118cd00-9c6e-4180-8e18-6d382dd6e1fb.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/a118cd00-9c6e-4180-8e18-6d382dd6e1fb.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/a118cd00-9c6e-4180-8e18-6d382dd6e1fb
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T07:04:44Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x0f8705c3bce949a20d48f29f806caa01528fa8fcdc36f40d28a5493d9cf3ca2a","name":"Hassan Mapenzi","registered_at":"2026-06-20T05:51:10Z","symbol":"NIM1531324","token_address":"0x4794194a2c4fb515cee4842724ffccb2c10e5341","type":"artist","uuid":"a118cd00-9c6e-4180-8e18-6d382dd6e1fb"}
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f8705c3bce949a20d48f29f806caa01528fa8fcdc36f40d28a5493d9cf3ca2a. Chain 2 (Bitcoin): anchored in block 954516 (2026-06-20T07:04:44Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a118cd00-9c6e-4180-8e18-6d382dd6e1fb.json and https://artists.proofprofile.net/proofs/artist/a118cd00-9c6e-4180-8e18-6d382dd6e1fb.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T07:04:44Z
  text: {"copyright_id":"0x0f8705c3bce949a20d48f29f806caa01528fa8fcdc36f40d28a5493d9cf3ca2a","name":"Hassan Mapenzi","registered_at":"2026-06-20T05:51:10Z","symbol":"NIM1531324","token_address":"0x4794194a2c4fb515cee4842724ffccb2c10e5341","type":"artist","uuid":"a118cd00-9c6e-4180-8e18-6d382dd6e1fb"}
album: Hawajui
  type: MusicAlbum
  date published: 2021-01-08
album: Sa Itakuaje
  type: MusicAlbum
  date published: 2021-02-10
album: Dharau
  type: MusicAlbum
  date published: 2021-07-12
album: Sio Poa
  type: MusicAlbum
  date published: 2021-11-06
album: Dunia
  type: MusicAlbum
  date published: 2022-10-17
  track: Dunia
    type: MusicRecording
    duration: PT2M23S
    duration ms: 143590
    explicit: false
    by artist: Hassan Mapenzi
    in album: Dunia
      type: MusicAlbum
      date published: 2022-10-17
    genre: bongo flava
    genre: singeli
    isrc code: TZA1X2201015
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-19T23:33:17+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xddacf7d515218b1bd57347b6baa089499b2f23687ea8ccc507daa417f7b4ce26
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958796
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958796
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TZA1X2201015
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-20T00:01:46Z
    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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
    subject of: OpenTimestamps Proof of Existence
      type: DigitalDocument
      encoding format: application/vnd.opentimestamps.ots
      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddacf7d515218b1bd57347b6baa089499b2f23687ea8ccc507daa417f7b4ce26. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T00:01:46Z), 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/TZA1X2201015.
      date published: 2026-07-20T00:01:46Z
    audio: Dunia
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 87.446
      additional property: Musical Key
        type: PropertyValue
        value: 6
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.645
      additional property: Energy
        type: PropertyValue
        value: 0.63
      additional property: Speechiness
        type: PropertyValue
        value: 0.121
      additional property: Acousticness
        type: PropertyValue
        value: 0.498
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.171
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.646
      additional property: Loudness (dB)
        type: PropertyValue
        value: -4.716
      additional property: Key Name
        type: PropertyValue
        value: F#
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: Dance
  type: MusicAlbum
  date published: 2023-01-14