John Warren
type: MusicGroup
description: John Warren may refer to: Entertainment John F. Warren (1909–2000), American cinematographer John Warren (actor) (1916–1977), British screenwriter and actor John Warren (musician) (born 1938), Can
popularity: 2
followers: 24
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xd0e4be8f387e3247c31e54e2088c4c68b6b988b3dabc994db196830b6b3861d8
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954019
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954019
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/3519f7b8-8f5c-49bd-8611-454201544b40.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/3519f7b8-8f5c-49bd-8611-454201544b40.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/3519f7b8-8f5c-49bd-8611-454201544b40
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T23:44:13Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xd0e4be8f387e3247c31e54e2088c4c68b6b988b3dabc994db196830b6b3861d8","name":"John Warren","registered_at":"2026-06-16T08:23:53Z","symbol":"NIM0993721","token_address":"0xb70027fafc1252dfe3c81de6bbd2b5536af3bfef","type":"artist","uuid":"3519f7b8-8f5c-49bd-8611-454201544b40"}
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 0xd0e4be8f387e3247c31e54e2088c4c68b6b988b3dabc994db196830b6b3861d8. Chain 2 (Bitcoin): anchored in block 954019 (2026-06-16T23:44:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3519f7b8-8f5c-49bd-8611-454201544b40.json and https://artists.proofprofile.net/proofs/artist/3519f7b8-8f5c-49bd-8611-454201544b40.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T23:44:13Z
  text: {"copyright_id":"0xd0e4be8f387e3247c31e54e2088c4c68b6b988b3dabc994db196830b6b3861d8","name":"John Warren","registered_at":"2026-06-16T08:23:53Z","symbol":"NIM0993721","token_address":"0xb70027fafc1252dfe3c81de6bbd2b5536af3bfef","type":"artist","uuid":"3519f7b8-8f5c-49bd-8611-454201544b40"}
album: Therapy
  type: MusicAlbum
  date published: 2020-01-30
album: Living in the past
  type: MusicAlbum
  date published: 2021-01-21