Just Jack
type: MusicGroup
genre: bass house
genre: future house
genre: g-house
description: Jack Christopher Allsopp (born 12 May 1975), known by the stage name Just Jack, is an English musician from Camden Town, London. He first came to prominence with the release of his 2007 single "Starz
popularity: 3
followers: 219
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x40a8a49c1f4adb4acaf4006f3e6d2ed12e17429f7eb32d420e1c5dbf0ff3c7e1
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954014
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954014
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/28090be1-4caa-4a38-a0a7-a45d22816db6.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/28090be1-4caa-4a38-a0a7-a45d22816db6.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/28090be1-4caa-4a38-a0a7-a45d22816db6
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T22:46:20Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x40a8a49c1f4adb4acaf4006f3e6d2ed12e17429f7eb32d420e1c5dbf0ff3c7e1","name":"Just Jack","registered_at":"2026-06-16T03:32:42Z","symbol":"NIM0924166","token_address":"0xb0a452cec933e7977d4f6671d1fb67e59cad4163","type":"artist","uuid":"28090be1-4caa-4a38-a0a7-a45d22816db6"}
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 0x40a8a49c1f4adb4acaf4006f3e6d2ed12e17429f7eb32d420e1c5dbf0ff3c7e1. Chain 2 (Bitcoin): anchored in block 954014 (2026-06-16T22:46:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/28090be1-4caa-4a38-a0a7-a45d22816db6.json and https://artists.proofprofile.net/proofs/artist/28090be1-4caa-4a38-a0a7-a45d22816db6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T22:46:20Z
  text: {"copyright_id":"0x40a8a49c1f4adb4acaf4006f3e6d2ed12e17429f7eb32d420e1c5dbf0ff3c7e1","name":"Just Jack","registered_at":"2026-06-16T03:32:42Z","symbol":"NIM0924166","token_address":"0xb0a452cec933e7977d4f6671d1fb67e59cad4163","type":"artist","uuid":"28090be1-4caa-4a38-a0a7-a45d22816db6"}
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  type: MusicAlbum
  date published: 2020-11-20
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  type: MusicAlbum
  date published: 2020-11-20
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  type: MusicAlbum
  date published: 2021-01-25
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  type: MusicAlbum
  date published: 2021-01-29
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  type: MusicAlbum
  date published: 2021-01-29
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  type: MusicAlbum
  date published: 2021-06-25
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  type: MusicAlbum
  date published: 2021-06-25
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  type: MusicAlbum
  date published: 2021-07-23