Robert Irwin
type: MusicGroup
description: Robert Irwin may refer to: Robert Irwin (North Carolina politician) (1738–1800), general of the American militia in the Revolutionary War Robert Irwin (Canadian politician) (1865–1941), Canadian po
popularity: 10
followers: 41
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xa85ee9a3476d6975dddcbfd71ed0f14d4e91ca3ea2ba4ab7ca5086c462e8bc88
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954065
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954065
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/553596e1-88a9-48da-a9f5-50b678426e97.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/553596e1-88a9-48da-a9f5-50b678426e97.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/553596e1-88a9-48da-a9f5-50b678426e97
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:10:43Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xa85ee9a3476d6975dddcbfd71ed0f14d4e91ca3ea2ba4ab7ca5086c462e8bc88","name":"Robert Irwin","registered_at":"2026-06-16T19:13:42Z","symbol":"NIM1148752","token_address":"0xc079d25b0e5c1ac53de4898a703e8ea4df040255","type":"artist","uuid":"553596e1-88a9-48da-a9f5-50b678426e97"}
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 0xa85ee9a3476d6975dddcbfd71ed0f14d4e91ca3ea2ba4ab7ca5086c462e8bc88. 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/553596e1-88a9-48da-a9f5-50b678426e97.json and https://artists.proofprofile.net/proofs/artist/553596e1-88a9-48da-a9f5-50b678426e97.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:10:43Z
  text: {"copyright_id":"0xa85ee9a3476d6975dddcbfd71ed0f14d4e91ca3ea2ba4ab7ca5086c462e8bc88","name":"Robert Irwin","registered_at":"2026-06-16T19:13:42Z","symbol":"NIM1148752","token_address":"0xc079d25b0e5c1ac53de4898a703e8ea4df040255","type":"artist","uuid":"553596e1-88a9-48da-a9f5-50b678426e97"}