John Cooper
type: MusicGroup
description: John Cooper may refer to: Academics and science John Thomas Cooper (1790–1854), English chemist John Montgomery Cooper (1881–1949), American anthropologist, priest, sociologist John Cobb Cooper (1
popularity: 27
followers: 130
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xbcbdb22c851c623747d3325adfeb262bb7a84a289e032ff759f53a6dc68c1e1c
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953407
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953407
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/4e2b49c4-f43a-4646-b6ba-8eb3109f3a92.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/4e2b49c4-f43a-4646-b6ba-8eb3109f3a92.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/4e2b49c4-f43a-4646-b6ba-8eb3109f3a92
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-12T19:24:56Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xbcbdb22c851c623747d3325adfeb262bb7a84a289e032ff759f53a6dc68c1e1c","name":"John Cooper","registered_at":"2026-06-11T19:36:22Z","symbol":"NIM0102183","token_address":"0x4bcb9ece5c9b6a320cc615e448d0c602fec1f42b","type":"artist","uuid":"4e2b49c4-f43a-4646-b6ba-8eb3109f3a92"}
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 0xbcbdb22c851c623747d3325adfeb262bb7a84a289e032ff759f53a6dc68c1e1c. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4e2b49c4-f43a-4646-b6ba-8eb3109f3a92.json and https://artists.proofprofile.net/proofs/artist/4e2b49c4-f43a-4646-b6ba-8eb3109f3a92.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-12T19:24:56Z
  text: {"copyright_id":"0xbcbdb22c851c623747d3325adfeb262bb7a84a289e032ff759f53a6dc68c1e1c","name":"John Cooper","registered_at":"2026-06-11T19:36:22Z","symbol":"NIM0102183","token_address":"0x4bcb9ece5c9b6a320cc615e448d0c602fec1f42b","type":"artist","uuid":"4e2b49c4-f43a-4646-b6ba-8eb3109f3a92"}