François Lazarevic
type: MusicGroup
popularity: 4
followers: 60
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x9a0fd230386a8de243c1fc43aedb3c1a2098180fa346be8e3c41ea97a611bc71
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953997
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953997
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/317d13c8-adfd-48dc-bf4a-ce9a69efa086.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/317d13c8-adfd-48dc-bf4a-ce9a69efa086.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/317d13c8-adfd-48dc-bf4a-ce9a69efa086
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T20:07:57Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x9a0fd230386a8de243c1fc43aedb3c1a2098180fa346be8e3c41ea97a611bc71","name":"François Lazarevic","registered_at":"2026-06-16T06:45:10Z","symbol":"NIM0970146","token_address":"0xc918abdca2ac725856e7d7e2083264339bae1892","type":"artist","uuid":"317d13c8-adfd-48dc-bf4a-ce9a69efa086"}
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 0x9a0fd230386a8de243c1fc43aedb3c1a2098180fa346be8e3c41ea97a611bc71. Chain 2 (Bitcoin): anchored in block 954014 (2026-06-16T22:46:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/317d13c8-adfd-48dc-bf4a-ce9a69efa086.json and https://artists.proofprofile.net/proofs/artist/317d13c8-adfd-48dc-bf4a-ce9a69efa086.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T22:46:20Z
  text: {"copyright_id":"0x9a0fd230386a8de243c1fc43aedb3c1a2098180fa346be8e3c41ea97a611bc71","name":"François Lazarevic","registered_at":"2026-06-16T06:45:10Z","symbol":"NIM0970146","token_address":"0xc918abdca2ac725856e7d7e2083264339bae1892","type":"artist","uuid":"317d13c8-adfd-48dc-bf4a-ce9a69efa086"}