Chérif Ousmane Madani Haidara
type: MusicGroup
popularity: 5
followers: 1115
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xa4224549d5b47d54b4d4164da585243e0d2e10d2d5fe21888ae0af8c56ee8f5f
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954618
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954618
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/c7bbe923-ea85-43f6-9aaa-c74a0f9fa049.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/c7bbe923-ea85-43f6-9aaa-c74a0f9fa049.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/c7bbe923-ea85-43f6-9aaa-c74a0f9fa049
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T23:05:13Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xa4224549d5b47d54b4d4164da585243e0d2e10d2d5fe21888ae0af8c56ee8f5f","name":"Chérif Ousmane Madani Haidara","registered_at":"2026-06-20T21:54:32Z","symbol":"NIM1726177","token_address":"0x90fb92b5bd79c5e2ae94a5b3e20e8d629741a105","type":"artist","uuid":"c7bbe923-ea85-43f6-9aaa-c74a0f9fa049"}
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 0xa4224549d5b47d54b4d4164da585243e0d2e10d2d5fe21888ae0af8c56ee8f5f. Chain 2 (Bitcoin): anchored in block 954618 (2026-06-20T23:05:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c7bbe923-ea85-43f6-9aaa-c74a0f9fa049.json and https://artists.proofprofile.net/proofs/artist/c7bbe923-ea85-43f6-9aaa-c74a0f9fa049.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T23:05:13Z
  text: {"copyright_id":"0xa4224549d5b47d54b4d4164da585243e0d2e10d2d5fe21888ae0af8c56ee8f5f","name":"Chérif Ousmane Madani Haidara","registered_at":"2026-06-20T21:54:32Z","symbol":"NIM1726177","token_address":"0x90fb92b5bd79c5e2ae94a5b3e20e8d629741a105","type":"artist","uuid":"c7bbe923-ea85-43f6-9aaa-c74a0f9fa049"}
album: Maouloud 2020
  type: MusicAlbum
  date published: 2020-10-29