Sandra Haj
type: MusicGroup
popularity: 13
followers: 7444
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xf31f3605df60542852ca5a9888962aba0629ae800df34fd965558228ed7df0af
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953817
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953817
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f93c0837-3292-4dcf-8387-1830c5463977.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f93c0837-3292-4dcf-8387-1830c5463977.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/f93c0837-3292-4dcf-8387-1830c5463977
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T18:10:31Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xf31f3605df60542852ca5a9888962aba0629ae800df34fd965558228ed7df0af","name":"Sandra Haj","registered_at":"2026-06-15T06:41:19Z","symbol":"NIM0713823","token_address":"0xbfd92a350035a252329e060f3363e91723d51394","type":"artist","uuid":"f93c0837-3292-4dcf-8387-1830c5463977"}
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 0xf31f3605df60542852ca5a9888962aba0629ae800df34fd965558228ed7df0af. Chain 2 (Bitcoin): anchored in block 953817 (2026-06-15T18:10:31Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f93c0837-3292-4dcf-8387-1830c5463977.json and https://artists.proofprofile.net/proofs/artist/f93c0837-3292-4dcf-8387-1830c5463977.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T18:10:31Z
  text: {"copyright_id":"0xf31f3605df60542852ca5a9888962aba0629ae800df34fd965558228ed7df0af","name":"Sandra Haj","registered_at":"2026-06-15T06:41:19Z","symbol":"NIM0713823","token_address":"0xbfd92a350035a252329e060f3363e91723d51394","type":"artist","uuid":"f93c0837-3292-4dcf-8387-1830c5463977"}
album: Dawa El Nesyan
  type: MusicAlbum
  date published: 2018-02-10
album: Fatshy Wara Gozek
  type: MusicAlbum
  date published: 2019-02-10
album: Deh Hekayat
  type: MusicAlbum
  date published: 2019-06-06
album: Tameny Ally Ghayeb
  type: MusicAlbum
  date published: 2020-08-16
album: ياما نفسي اقولك
  type: MusicAlbum
  date published: 2025-05-19
album: ياما نفس اقولك
  type: MusicAlbum
  date published: 2025-05-19
album: La Akeed Mesh Sah
  type: MusicAlbum
  date published: 2025-09-12
album: La Akeed Mesh Sah (Chill Trap Remix)
  type: MusicAlbum
  date published: 2025-10-10
album: La Akeed Mesh Sah (Afro House Remix)
  type: MusicAlbum
  date published: 2025-11-06
album: El Nasseeb
  type: MusicAlbum
  date published: 2025-11-07