Mr. Jack
type: MusicGroup
description: Mr. Jack is an American comic strip by Jimmy Swinnerton which ran in William Randolph Hearst newspapers from August 30, 1903, until 1935. Mr. Jack, a philandering playboy tiger, may be the first deve
popularity: 6
followers: 12
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xc31484a25983723c924d1b760b0ab1e8d5f69af544fc1d22074b62733e5f89d4
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954065
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954065
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/503b0133-6a19-4efb-b27f-e68452173b2b.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/503b0133-6a19-4efb-b27f-e68452173b2b.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/503b0133-6a19-4efb-b27f-e68452173b2b
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:10:43Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xc31484a25983723c924d1b760b0ab1e8d5f69af544fc1d22074b62733e5f89d4","name":"Mr. Jack","registered_at":"2026-06-16T17:38:12Z","symbol":"NIM1125970","token_address":"0x71343d78df837fd44bf187dff2e5977ebe47468b","type":"artist","uuid":"503b0133-6a19-4efb-b27f-e68452173b2b"}
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 0xc31484a25983723c924d1b760b0ab1e8d5f69af544fc1d22074b62733e5f89d4. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/503b0133-6a19-4efb-b27f-e68452173b2b.json and https://artists.proofprofile.net/proofs/artist/503b0133-6a19-4efb-b27f-e68452173b2b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:10:43Z
  text: {"copyright_id":"0xc31484a25983723c924d1b760b0ab1e8d5f69af544fc1d22074b62733e5f89d4","name":"Mr. Jack","registered_at":"2026-06-16T17:38:12Z","symbol":"NIM1125970","token_address":"0x71343d78df837fd44bf187dff2e5977ebe47468b","type":"artist","uuid":"503b0133-6a19-4efb-b27f-e68452173b2b"}