Keyvan Farzin
type: MusicGroup
popularity: 2
followers: 6
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x4e8d5bda0fd3735caf74941999c354a90d6181c0c39484db4221f02d8b7ce603
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954050
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954050
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/43317a9e-aa5b-47c4-a041-2d07ca3cc060.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/43317a9e-aa5b-47c4-a041-2d07ca3cc060.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/43317a9e-aa5b-47c4-a041-2d07ca3cc060
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T05:14:33Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x4e8d5bda0fd3735caf74941999c354a90d6181c0c39484db4221f02d8b7ce603","name":"Keyvan Farzin","registered_at":"2026-06-16T12:59:59Z","symbol":"NIM1059585","token_address":"0x7a7501f256e2f1d362fd97c19c6ae7d139da8fc3","type":"artist","uuid":"43317a9e-aa5b-47c4-a041-2d07ca3cc060"}
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 0x4e8d5bda0fd3735caf74941999c354a90d6181c0c39484db4221f02d8b7ce603. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/43317a9e-aa5b-47c4-a041-2d07ca3cc060.json and https://artists.proofprofile.net/proofs/artist/43317a9e-aa5b-47c4-a041-2d07ca3cc060.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:10:43Z
  text: {"copyright_id":"0x4e8d5bda0fd3735caf74941999c354a90d6181c0c39484db4221f02d8b7ce603","name":"Keyvan Farzin","registered_at":"2026-06-16T12:59:59Z","symbol":"NIM1059585","token_address":"0x7a7501f256e2f1d362fd97c19c6ae7d139da8fc3","type":"artist","uuid":"43317a9e-aa5b-47c4-a041-2d07ca3cc060"}