Douaa Lahyaoui
type: MusicGroup
genre: moroccan chaabi
genre: moroccan pop
genre: moroccan rap
genre: raï
popularity: 45
followers: 84964
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x22df76d05fcbfff1c0fc930c8191e31c609a783120f1c88476ff3fc38af839e6
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953407
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953407
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/5f2a3b2f-abbc-48a6-a755-cf414b7ae110.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/5f2a3b2f-abbc-48a6-a755-cf414b7ae110.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/5f2a3b2f-abbc-48a6-a755-cf414b7ae110
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-12T19:24:56Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x22df76d05fcbfff1c0fc930c8191e31c609a783120f1c88476ff3fc38af839e6","name":"Douaa Lahyaoui","registered_at":"2026-06-11T22:37:41Z","symbol":"NIM0124216","token_address":"0xeeddf617293720c441e1eec3879465fa40ff0eeb","type":"artist","uuid":"5f2a3b2f-abbc-48a6-a755-cf414b7ae110"}
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 0x22df76d05fcbfff1c0fc930c8191e31c609a783120f1c88476ff3fc38af839e6. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5f2a3b2f-abbc-48a6-a755-cf414b7ae110.json and https://artists.proofprofile.net/proofs/artist/5f2a3b2f-abbc-48a6-a755-cf414b7ae110.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
  date published: 2026-06-12T19:24:56Z
  text: {"copyright_id":"0x22df76d05fcbfff1c0fc930c8191e31c609a783120f1c88476ff3fc38af839e6","name":"Douaa Lahyaoui","registered_at":"2026-06-11T22:37:41Z","symbol":"NIM0124216","token_address":"0xeeddf617293720c441e1eec3879465fa40ff0eeb","type":"artist","uuid":"5f2a3b2f-abbc-48a6-a755-cf414b7ae110"}
album: Hyati Ana
  type: MusicAlbum
  date published: 2021-09-27
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  type: MusicAlbum
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  type: MusicAlbum
  date published: 2024-07-19
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  type: MusicAlbum
  date published: 2025-05-16