Jack Jeffers
type: MusicGroup
genre: avant-garde
genre: free jazz
description: Jack Jeffers (born 17 July 2006) is an American racing driver from San Antonio, Texas. He currently competes in USF Juniors and the USF2000 Championship with Exclusive Autosport. Career Karting
popularity: 14
followers: 55
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x8c0e1f633d686e21301cacdf5305ac7a41b37a6904847030ca378041df241675
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953778
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953778
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/b4b54562-54bd-4261-9358-0562ab0e4322.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/b4b54562-54bd-4261-9358-0562ab0e4322.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/b4b54562-54bd-4261-9358-0562ab0e4322
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T11:57:35Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x8c0e1f633d686e21301cacdf5305ac7a41b37a6904847030ca378041df241675","name":"Jack Jeffers","registered_at":"2026-06-14T23:25:06Z","symbol":"NIM0609643","token_address":"0x89f00f51459debee58652c6045c2d7193d480467","type":"artist","uuid":"b4b54562-54bd-4261-9358-0562ab0e4322"}
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 0x8c0e1f633d686e21301cacdf5305ac7a41b37a6904847030ca378041df241675. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b4b54562-54bd-4261-9358-0562ab0e4322.json and https://artists.proofprofile.net/proofs/artist/b4b54562-54bd-4261-9358-0562ab0e4322.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T11:57:35Z
  text: {"copyright_id":"0x8c0e1f633d686e21301cacdf5305ac7a41b37a6904847030ca378041df241675","name":"Jack Jeffers","registered_at":"2026-06-14T23:25:06Z","symbol":"NIM0609643","token_address":"0x89f00f51459debee58652c6045c2d7193d480467","type":"artist","uuid":"b4b54562-54bd-4261-9358-0562ab0e4322"}