Hammouda Lasmar
type: MusicGroup
genre: raï
popularity: 2
followers: 115
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xb077c844cc339c5a7928fae6247b88663e877f5c7ca1cf094730b8b29ece3247
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953867
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953867
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/05c22b5f-d362-4e6b-add4-e6540587c7aa.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/05c22b5f-d362-4e6b-add4-e6540587c7aa.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/05c22b5f-d362-4e6b-add4-e6540587c7aa
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T01:09:47Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xb077c844cc339c5a7928fae6247b88663e877f5c7ca1cf094730b8b29ece3247","name":"Hammouda Lasmar","registered_at":"2026-06-15T15:32:38Z","symbol":"NIM0752310","token_address":"0x4f053c2acaa43dbd369d1cd700a3519ac8cd1708","type":"artist","uuid":"05c22b5f-d362-4e6b-add4-e6540587c7aa"}
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 0xb077c844cc339c5a7928fae6247b88663e877f5c7ca1cf094730b8b29ece3247. Chain 2 (Bitcoin): anchored in block 953867 (2026-06-16T01:09:47Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/05c22b5f-d362-4e6b-add4-e6540587c7aa.json and https://artists.proofprofile.net/proofs/artist/05c22b5f-d362-4e6b-add4-e6540587c7aa.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T01:09:47Z
  text: {"copyright_id":"0xb077c844cc339c5a7928fae6247b88663e877f5c7ca1cf094730b8b29ece3247","name":"Hammouda Lasmar","registered_at":"2026-06-15T15:32:38Z","symbol":"NIM0752310","token_address":"0x4f053c2acaa43dbd369d1cd700a3519ac8cd1708","type":"artist","uuid":"05c22b5f-d362-4e6b-add4-e6540587c7aa"}
album: ضحك المكتوب علينا
  type: MusicAlbum
  date published: 2025-03-10
  track: ضحك المكتوب علينا
    type: MusicRecording
    duration: PT4M30S
    duration ms: 270744
    explicit: false
    by artist: Hammouda Lasmar
    in album: ضحك المكتوب علينا
      type: MusicAlbum
      date published: 2025-03-10
    genre: raï
    isrc code: QZHNB2553327
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-22T12:13:15+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x7f6834f724a8eb7de9355654580a792e38bccbc44a5f6f378ea63ea83b617bc8
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 959128
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/959128
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHNB2553327
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-22T12:33:25Z
    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 0x7f6834f724a8eb7de9355654580a792e38bccbc44a5f6f378ea63ea83b617bc8. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/QZHNB2553327.
      date published: 2026-07-22T12:33:25Z
    audio: ضحك المكتوب علينا
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 158.083
      additional property: Musical Key
        type: PropertyValue
        value: 9
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.637
      additional property: Energy
        type: PropertyValue
        value: 0.748
      additional property: Speechiness
        type: PropertyValue
        value: 0.055
      additional property: Acousticness
        type: PropertyValue
        value: 0.696
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.042
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.761
      additional property: Loudness (dB)
        type: PropertyValue
        value: -8.512
      additional property: Key Name
        type: PropertyValue
        value: A
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: نحبك ونموت عليك
  type: MusicAlbum
  date published: 2025-04-11
album: طهور ولدي الغالي
  type: MusicAlbum
  date published: 2025-05-13
album: يا عين
  type: MusicAlbum
  date published: 2025-06-27