Hafssa da
type: MusicGroup
genre: moroccan pop
genre: raï
popularity: 37
followers: 13838
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xcfba7826927592ba6c00b1b4785e84aa9e90d3d2e5f954aeea2314a54199fa5c
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/bb66f0f8-aede-4d97-9340-6c6ba87ab519.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/bb66f0f8-aede-4d97-9340-6c6ba87ab519.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/bb66f0f8-aede-4d97-9340-6c6ba87ab519
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-12T19:24:56Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xcfba7826927592ba6c00b1b4785e84aa9e90d3d2e5f954aeea2314a54199fa5c","name":"Hafssa da","registered_at":"2026-06-12T08:22:18Z","symbol":"NIM0240803","token_address":"0xfe22b0517f154ef5117789bcfa681fb0a77473e7","type":"artist","uuid":"bb66f0f8-aede-4d97-9340-6c6ba87ab519"}
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 0xcfba7826927592ba6c00b1b4785e84aa9e90d3d2e5f954aeea2314a54199fa5c. 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/bb66f0f8-aede-4d97-9340-6c6ba87ab519.json and https://artists.proofprofile.net/proofs/artist/bb66f0f8-aede-4d97-9340-6c6ba87ab519.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-12T19:24:56Z
  text: {"copyright_id":"0xcfba7826927592ba6c00b1b4785e84aa9e90d3d2e5f954aeea2314a54199fa5c","name":"Hafssa da","registered_at":"2026-06-12T08:22:18Z","symbol":"NIM0240803","token_address":"0xfe22b0517f154ef5117789bcfa681fb0a77473e7","type":"artist","uuid":"bb66f0f8-aede-4d97-9340-6c6ba87ab519"}
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