Capt. John Handy
type: MusicGroup
genre: boogie-woogie
popularity: 2
followers: 202
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x7c4d4669a23228e2d62efd48b696d3964168fab3a99d00df672734cb57cf78c8
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/4990e662-8100-455a-ba58-08a08c2630dc.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/4990e662-8100-455a-ba58-08a08c2630dc.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/4990e662-8100-455a-ba58-08a08c2630dc
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:10:43Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x7c4d4669a23228e2d62efd48b696d3964168fab3a99d00df672734cb57cf78c8","name":"Capt. John Handy","registered_at":"2026-06-16T15:10:19Z","symbol":"NIM1090677","token_address":"0xe7dacbbbdda63a07f0d70f5d81faac4d82a21ccd","type":"artist","uuid":"4990e662-8100-455a-ba58-08a08c2630dc"}
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 0x7c4d4669a23228e2d62efd48b696d3964168fab3a99d00df672734cb57cf78c8. 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/4990e662-8100-455a-ba58-08a08c2630dc.json and https://artists.proofprofile.net/proofs/artist/4990e662-8100-455a-ba58-08a08c2630dc.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:10:43Z
  text: {"copyright_id":"0x7c4d4669a23228e2d62efd48b696d3964168fab3a99d00df672734cb57cf78c8","name":"Capt. John Handy","registered_at":"2026-06-16T15:10:19Z","symbol":"NIM1090677","token_address":"0xe7dacbbbdda63a07f0d70f5d81faac4d82a21ccd","type":"artist","uuid":"4990e662-8100-455a-ba58-08a08c2630dc"}
album: At the Connecticut Traditional Jazz Club 1970 - 2nd Half
  type: MusicAlbum
  date published: 1970-01-01
album: At the Connecticut Traditional Jazz Club 1970 Volume 1
  type: MusicAlbum
  date published: 1970-01-01
album: Capt. John Handy's Television Airshots 1968-1970
  type: MusicAlbum
  date published: 1970-01-07
album: Very Handy
  type: MusicAlbum
  date published: 1994
album: Rare Cuts - Well Done Vol 6
  type: MusicAlbum
  date published: 2004-10-10