John "Mad Dog" Watkins
type: MusicGroup
genre: blues
popularity: 3
followers: 257
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x18e0b2bef33084ecb1e3c8227507d6195d8430ac6549aea30dcb4d8a62993aa0
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954784
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954784
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f05706ca-c5ce-4369-beca-d67f0173a9a4.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f05706ca-c5ce-4369-beca-d67f0173a9a4.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/f05706ca-c5ce-4369-beca-d67f0173a9a4
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-22T02:53:59Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x18e0b2bef33084ecb1e3c8227507d6195d8430ac6549aea30dcb4d8a62993aa0","name":"John \"Mad Dog\" Watkins","registered_at":"2026-06-21T13:02:44Z","symbol":"NIM1926260","token_address":"0x514ba01d23db47918ec4037bdd188ad7e803f67b","type":"artist","uuid":"f05706ca-c5ce-4369-beca-d67f0173a9a4"}
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 0x18e0b2bef33084ecb1e3c8227507d6195d8430ac6549aea30dcb4d8a62993aa0. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f05706ca-c5ce-4369-beca-d67f0173a9a4.json and https://artists.proofprofile.net/proofs/artist/f05706ca-c5ce-4369-beca-d67f0173a9a4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-22T02:53:59Z
  text: {"copyright_id":"0x18e0b2bef33084ecb1e3c8227507d6195d8430ac6549aea30dcb4d8a62993aa0","name":"John \"Mad Dog\" Watkins","registered_at":"2026-06-21T13:02:44Z","symbol":"NIM1926260","token_address":"0x514ba01d23db47918ec4037bdd188ad7e803f67b","type":"artist","uuid":"f05706ca-c5ce-4369-beca-d67f0173a9a4"}
album: Here I Am (1984) [Blues Reference]
  type: MusicAlbum
  date published: 1985