Cool John Ferguson
type: MusicGroup
description: John W. Ferguson (December 2, 1953 – August 12, 2025), known professionally as Cool John Ferguson, was an American blues guitarist, singer and songwriter. He released five albums under his own name an
popularity: 2
followers: 235
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xbffcb6352412c5f5e3d6872640231cfd08adea90f118e6cc32864a02ea4707f4
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954533
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954533
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/a5ce1992-8823-46aa-99fd-8c028794b795.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/a5ce1992-8823-46aa-99fd-8c028794b795.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/a5ce1992-8823-46aa-99fd-8c028794b795
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T08:57:02Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xbffcb6352412c5f5e3d6872640231cfd08adea90f118e6cc32864a02ea4707f4","name":"Cool John Ferguson","registered_at":"2026-06-20T07:32:51Z","symbol":"NIM1554261","token_address":"0x89187b91e6df73200660827a32709c02048eaf3d","type":"artist","uuid":"a5ce1992-8823-46aa-99fd-8c028794b795"}
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 0xbffcb6352412c5f5e3d6872640231cfd08adea90f118e6cc32864a02ea4707f4. Chain 2 (Bitcoin): anchored in block 954533 (2026-06-20T08:57:02Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a5ce1992-8823-46aa-99fd-8c028794b795.json and https://artists.proofprofile.net/proofs/artist/a5ce1992-8823-46aa-99fd-8c028794b795.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T08:57:02Z
  text: {"copyright_id":"0xbffcb6352412c5f5e3d6872640231cfd08adea90f118e6cc32864a02ea4707f4","name":"Cool John Ferguson","registered_at":"2026-06-20T07:32:51Z","symbol":"NIM1554261","token_address":"0x89187b91e6df73200660827a32709c02048eaf3d","type":"artist","uuid":"a5ce1992-8823-46aa-99fd-8c028794b795"}
album: Cool John Ferguson
  type: MusicAlbum
  date published: 2001-01-01
album: Cool Yule
  type: MusicAlbum
  date published: 2002-01-01
album: Guitar Heaven
  type: MusicAlbum
  date published: 2003-10-01