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
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 953877 (2026-06-16T02:39:16Z). 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: 2026-06-16T02:39:16Z
  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
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