The Jack Union
type: MusicGroup
popularity: 5
followers: 52
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x6d4ee1d85d8434b5b88e4e2bff4d750b05ee51aadaa544f226a2dedeae51ceb5
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954017
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954017
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/360a713f-59b8-40e8-9ceb-3c980c515e21.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/360a713f-59b8-40e8-9ceb-3c980c515e21.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/360a713f-59b8-40e8-9ceb-3c980c515e21
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T23:38:33Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x6d4ee1d85d8434b5b88e4e2bff4d750b05ee51aadaa544f226a2dedeae51ceb5","name":"The Jack Union","registered_at":"2026-06-16T08:22:09Z","symbol":"NIM0993303","token_address":"0x49f0418452aa6d35a755461f063396d0344a0ae7","type":"artist","uuid":"360a713f-59b8-40e8-9ceb-3c980c515e21"}
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 0x6d4ee1d85d8434b5b88e4e2bff4d750b05ee51aadaa544f226a2dedeae51ceb5. Chain 2 (Bitcoin): anchored in block 954017 (2026-06-16T23:38:33Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/360a713f-59b8-40e8-9ceb-3c980c515e21.json and https://artists.proofprofile.net/proofs/artist/360a713f-59b8-40e8-9ceb-3c980c515e21.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T23:38:33Z
  text: {"copyright_id":"0x6d4ee1d85d8434b5b88e4e2bff4d750b05ee51aadaa544f226a2dedeae51ceb5","name":"The Jack Union","registered_at":"2026-06-16T08:22:09Z","symbol":"NIM0993303","token_address":"0x49f0418452aa6d35a755461f063396d0344a0ae7","type":"artist","uuid":"360a713f-59b8-40e8-9ceb-3c980c515e21"}
album: A Fine Madess
  type: MusicAlbum
  date published: 2001-04-15