Big John
type: MusicGroup
description: Big John may refer to: People In sports John Baker (defensive lineman, born 1935) (1935-2007), American National Football League player John Cannady (1923–2002), American National Football League p
popularity: 13
followers: 16
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xccd6a53273b58aed9ced7da03041dc5af718716ae3d0aa983051ec43a6c49c54
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953742
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953742
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/a1719510-d1bc-432d-a1e7-2e02762e132d.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/a1719510-d1bc-432d-a1e7-2e02762e132d.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/a1719510-d1bc-432d-a1e7-2e02762e132d
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T04:47:56Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xccd6a53273b58aed9ced7da03041dc5af718716ae3d0aa983051ec43a6c49c54","name":"Big John","registered_at":"2026-06-14T21:28:52Z","symbol":"NIM0581904","token_address":"0x5e387af75fd0b8e3573ef30064cca07ea2e4f075","type":"artist","uuid":"a1719510-d1bc-432d-a1e7-2e02762e132d"}
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 0xccd6a53273b58aed9ced7da03041dc5af718716ae3d0aa983051ec43a6c49c54. 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/a1719510-d1bc-432d-a1e7-2e02762e132d.json and https://artists.proofprofile.net/proofs/artist/a1719510-d1bc-432d-a1e7-2e02762e132d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T04:47:56Z
  text: {"copyright_id":"0xccd6a53273b58aed9ced7da03041dc5af718716ae3d0aa983051ec43a6c49c54","name":"Big John","registered_at":"2026-06-14T21:28:52Z","symbol":"NIM0581904","token_address":"0x5e387af75fd0b8e3573ef30064cca07ea2e4f075","type":"artist","uuid":"a1719510-d1bc-432d-a1e7-2e02762e132d"}