Esper Haddad
type: MusicGroup
genre: trance
popularity: 4
followers: 85
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x5420cc505d8b51f23dc4fef400edc05c97d779efe2903e51ae1597436da88474
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954342
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954342
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/887ce91b-f48f-465d-9c00-153b1b779282.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/887ce91b-f48f-465d-9c00-153b1b779282.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/887ce91b-f48f-465d-9c00-153b1b779282
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-19T03:22:39Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x5420cc505d8b51f23dc4fef400edc05c97d779efe2903e51ae1597436da88474","name":"Esper Haddad","registered_at":"2026-06-17T13:17:10Z","symbol":"NIM1407117","token_address":"0x53d3e767e28ce1ba2c281f88a99abfb867c91b9b","type":"artist","uuid":"887ce91b-f48f-465d-9c00-153b1b779282"}
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 0x5420cc505d8b51f23dc4fef400edc05c97d779efe2903e51ae1597436da88474. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/887ce91b-f48f-465d-9c00-153b1b779282.json and https://artists.proofprofile.net/proofs/artist/887ce91b-f48f-465d-9c00-153b1b779282.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-19T03:22:39Z
  text: {"copyright_id":"0x5420cc505d8b51f23dc4fef400edc05c97d779efe2903e51ae1597436da88474","name":"Esper Haddad","registered_at":"2026-06-17T13:17:10Z","symbol":"NIM1407117","token_address":"0x53d3e767e28ce1ba2c281f88a99abfb867c91b9b","type":"artist","uuid":"887ce91b-f48f-465d-9c00-153b1b779282"}
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