Big Jack Johnson
type: MusicGroup
genre: blues
description: Jack N. Johnson, known as Big Jack Johnson (July 30, 1939 or 1940 – March 14, 2011) was an American electric blues musician, one of the "present-day exponents of an edgier, electrified version of the
popularity: 11
followers: 2100
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x4dacb0fc21e42de3f75f437b59344a14ec155522b79a27a7aafec64f8b9297ec
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953724
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953724
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/8d0e8f4b-f359-4b42-8dad-5dd2ce6577b2.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/8d0e8f4b-f359-4b42-8dad-5dd2ce6577b2.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/8d0e8f4b-f359-4b42-8dad-5dd2ce6577b2
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T01:43:13Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x4dacb0fc21e42de3f75f437b59344a14ec155522b79a27a7aafec64f8b9297ec","name":"Big Jack Johnson","registered_at":"2026-06-14T19:21:17Z","symbol":"NIM0551485","token_address":"0x645123764baf9128ed93e142d26a43204c415c06","type":"artist","uuid":"8d0e8f4b-f359-4b42-8dad-5dd2ce6577b2"}
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 0x4dacb0fc21e42de3f75f437b59344a14ec155522b79a27a7aafec64f8b9297ec. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8d0e8f4b-f359-4b42-8dad-5dd2ce6577b2.json and https://artists.proofprofile.net/proofs/artist/8d0e8f4b-f359-4b42-8dad-5dd2ce6577b2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T04:47:56Z
  text: {"copyright_id":"0x4dacb0fc21e42de3f75f437b59344a14ec155522b79a27a7aafec64f8b9297ec","name":"Big Jack Johnson","registered_at":"2026-06-14T19:21:17Z","symbol":"NIM0551485","token_address":"0x645123764baf9128ed93e142d26a43204c415c06","type":"artist","uuid":"8d0e8f4b-f359-4b42-8dad-5dd2ce6577b2"}
album: The Oil Man
  type: MusicAlbum
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  type: MusicAlbum
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  type: MusicAlbum
  date published: 1996-01-01
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  type: MusicAlbum
  date published: 1997
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  type: MusicAlbum
  date published: 1998
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  type: MusicAlbum
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  type: MusicAlbum
  date published: 2000
album: Roots Stew
  type: MusicAlbum
  date published: 2000-01-01
album: The Memphis Barbecue Sessions
  type: MusicAlbum
  date published: 2002
album: The Memphis Barbecue Sessions
  type: MusicAlbum
  date published: 2002-01-01
album: Christmas Blues Medley
  type: MusicAlbum
  date published: 2021-11-26
album: Stripped Down In Memphis
  type: MusicAlbum
  date published: 2022-05-20