Kayvan Farzin
type: MusicGroup
popularity: 6
followers: 30
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xd44ccb253f99bcd1296db92e5e1220f89aa44176c89cbf7883e48728e50f8ac1
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953975
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953975
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/2b4f0172-39cd-45df-b47b-55371ba3d9f4.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/2b4f0172-39cd-45df-b47b-55371ba3d9f4.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/2b4f0172-39cd-45df-b47b-55371ba3d9f4
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T16:53:41Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xd44ccb253f99bcd1296db92e5e1220f89aa44176c89cbf7883e48728e50f8ac1","name":"Kayvan Farzin","registered_at":"2026-06-16T04:35:24Z","symbol":"NIM0939145","token_address":"0x06fb3a51f53eedbdbdc409cc7a7777cb223caac2","type":"artist","uuid":"2b4f0172-39cd-45df-b47b-55371ba3d9f4"}
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 0xd44ccb253f99bcd1296db92e5e1220f89aa44176c89cbf7883e48728e50f8ac1. 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/2b4f0172-39cd-45df-b47b-55371ba3d9f4.json and https://artists.proofprofile.net/proofs/artist/2b4f0172-39cd-45df-b47b-55371ba3d9f4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T22:46:20Z
  text: {"copyright_id":"0xd44ccb253f99bcd1296db92e5e1220f89aa44176c89cbf7883e48728e50f8ac1","name":"Kayvan Farzin","registered_at":"2026-06-16T04:35:24Z","symbol":"NIM0939145","token_address":"0x06fb3a51f53eedbdbdc409cc7a7777cb223caac2","type":"artist","uuid":"2b4f0172-39cd-45df-b47b-55371ba3d9f4"}