Barzin Contractor
type: MusicGroup
popularity: 17
followers: 487
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x8407818e440790299c036d4b1339d557832a50abc53c1412680e51c41c956965
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953778
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953778
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/c7a24d5d-5702-43b7-92d8-18db09531332.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/c7a24d5d-5702-43b7-92d8-18db09531332.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/c7a24d5d-5702-43b7-92d8-18db09531332
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T11:57:35Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x8407818e440790299c036d4b1339d557832a50abc53c1412680e51c41c956965","name":"Barzin Contractor","registered_at":"2026-06-15T01:30:38Z","symbol":"NIM0639649","token_address":"0x941ea28962c9cf3fb8173aa95803a2e4cbad5657","type":"artist","uuid":"c7a24d5d-5702-43b7-92d8-18db09531332"}
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 0x8407818e440790299c036d4b1339d557832a50abc53c1412680e51c41c956965. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c7a24d5d-5702-43b7-92d8-18db09531332.json and https://artists.proofprofile.net/proofs/artist/c7a24d5d-5702-43b7-92d8-18db09531332.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T11:57:35Z
  text: {"copyright_id":"0x8407818e440790299c036d4b1339d557832a50abc53c1412680e51c41c956965","name":"Barzin Contractor","registered_at":"2026-06-15T01:30:38Z","symbol":"NIM0639649","token_address":"0x941ea28962c9cf3fb8173aa95803a2e4cbad5657","type":"artist","uuid":"c7a24d5d-5702-43b7-92d8-18db09531332"}
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