Tahar Chawi
type: MusicGroup
genre: raï
popularity: 2
followers: 894
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x436ea527e04ed75d76d2316e8907b982fdf1d724ed5f837ac3c17e5f81aa3b9d
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954342
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954342
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/8f3938b2-fc07-451a-860c-d81fd18e854c.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/8f3938b2-fc07-451a-860c-d81fd18e854c.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/8f3938b2-fc07-451a-860c-d81fd18e854c
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-19T03:22:39Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x436ea527e04ed75d76d2316e8907b982fdf1d724ed5f837ac3c17e5f81aa3b9d","name":"Tahar Chawi","registered_at":"2026-06-17T15:59:26Z","symbol":"NIM1445856","token_address":"0xaf943727d9e43858f409a22025b6dc6c009c9947","type":"artist","uuid":"8f3938b2-fc07-451a-860c-d81fd18e854c"}
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 0x436ea527e04ed75d76d2316e8907b982fdf1d724ed5f837ac3c17e5f81aa3b9d. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8f3938b2-fc07-451a-860c-d81fd18e854c.json and https://artists.proofprofile.net/proofs/artist/8f3938b2-fc07-451a-860c-d81fd18e854c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-19T03:22:39Z
  text: {"copyright_id":"0x436ea527e04ed75d76d2316e8907b982fdf1d724ed5f837ac3c17e5f81aa3b9d","name":"Tahar Chawi","registered_at":"2026-06-17T15:59:26Z","symbol":"NIM1445856","token_address":"0xaf943727d9e43858f409a22025b6dc6c009c9947","type":"artist","uuid":"8f3938b2-fc07-451a-860c-d81fd18e854c"}
album: Special Fetes
  type: MusicAlbum
  date published: 2014-05-16
  track: Lassouad Magrouni
    type: MusicRecording
    duration: PT5M17S
    duration ms: 317066
    explicit: false
    by artist: Tahar Chawi
    in album: Special Fetes
      type: MusicAlbum
      date published: 2014-05-16
    genre: raï
    isrc code: QMFMG1483453
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-20T00:01:17+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x632caba35d3d6b58549e00581b25c67ec1b815189882b49f374c9dc39abe4834
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958800
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958800
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMFMG1483453
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-20T03:02:35Z
    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 0x632caba35d3d6b58549e00581b25c67ec1b815189882b49f374c9dc39abe4834. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T03:02:35Z), 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/QMFMG1483453.
      date published: 2026-07-20T03:02:35Z
    audio: Lassouad Magrouni
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 101.984
      additional property: Musical Key
        type: PropertyValue
        value: 3
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.588
      additional property: Energy
        type: PropertyValue
        value: 0.989
      additional property: Speechiness
        type: PropertyValue
        value: 0.049
      additional property: Acousticness
        type: PropertyValue
        value: 0.364
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.001
      additional property: Liveness
        type: PropertyValue
        value: 0.292
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.908
      additional property: Loudness (dB)
        type: PropertyValue
        value: -2.632
      additional property: Key Name
        type: PropertyValue
        value: Eb
      additional property: Mode Name
        type: PropertyValue
        value: Major