Bobby Dean Blackburn
type: MusicGroup
genre: blues
genre: boogie-woogie
description: Robert (alias Bobby Dean) Blackburn (born 1940) is a Canadian blues and rock ‘n’ roll musician. Blackburn is known as a major contributor to Toronto’s bustling Yonge Street in the blues heyday of the
popularity: 2
followers: 128
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xd24625a1e32c4b71a1cddf65bdcd73cdfaab1b1124f48852ba6c7e1c721511a8
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954667
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954667
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/dec9369c-6e15-469a-a409-476209e1009e.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/dec9369c-6e15-469a-a409-476209e1009e.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/dec9369c-6e15-469a-a409-476209e1009e
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T07:29:20Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xd24625a1e32c4b71a1cddf65bdcd73cdfaab1b1124f48852ba6c7e1c721511a8","name":"Bobby Dean Blackburn","registered_at":"2026-06-21T05:46:16Z","symbol":"NIM1838049","token_address":"0xe58b27cd304610b95a2b83ac9424431e18d93d56","type":"artist","uuid":"dec9369c-6e15-469a-a409-476209e1009e"}
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 0xd24625a1e32c4b71a1cddf65bdcd73cdfaab1b1124f48852ba6c7e1c721511a8. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/dec9369c-6e15-469a-a409-476209e1009e.json and https://artists.proofprofile.net/proofs/artist/dec9369c-6e15-469a-a409-476209e1009e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T07:29:20Z
  text: {"copyright_id":"0xd24625a1e32c4b71a1cddf65bdcd73cdfaab1b1124f48852ba6c7e1c721511a8","name":"Bobby Dean Blackburn","registered_at":"2026-06-21T05:46:16Z","symbol":"NIM1838049","token_address":"0xe58b27cd304610b95a2b83ac9424431e18d93d56","type":"artist","uuid":"dec9369c-6e15-469a-a409-476209e1009e"}
album: Don't Ask... Don't Tell
  type: MusicAlbum
  date published: 2010-07-13