Just Karl
type: MusicGroup
genre: future house
popularity: 3
followers: 231
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x0c1ff3e77a378e5afca3525dca02b073d73e18e4ffc77559d73da5d538d55c65
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954638
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954638
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/d5670af2-c3fd-4a97-8de1-f4e7d21f2ee6.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/d5670af2-c3fd-4a97-8de1-f4e7d21f2ee6.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/d5670af2-c3fd-4a97-8de1-f4e7d21f2ee6
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T03:45:44Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x0c1ff3e77a378e5afca3525dca02b073d73e18e4ffc77559d73da5d538d55c65","name":"Just Karl","registered_at":"2026-06-21T02:21:45Z","symbol":"NIM1790250","token_address":"0x189942572cb30c3d48876bdccf5c080692abb6f4","type":"artist","uuid":"d5670af2-c3fd-4a97-8de1-f4e7d21f2ee6"}
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 0x0c1ff3e77a378e5afca3525dca02b073d73e18e4ffc77559d73da5d538d55c65. Chain 2 (Bitcoin): anchored in block 954638 (2026-06-21T03:45:44Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d5670af2-c3fd-4a97-8de1-f4e7d21f2ee6.json and https://artists.proofprofile.net/proofs/artist/d5670af2-c3fd-4a97-8de1-f4e7d21f2ee6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T03:45:44Z
  text: {"copyright_id":"0x0c1ff3e77a378e5afca3525dca02b073d73e18e4ffc77559d73da5d538d55c65","name":"Just Karl","registered_at":"2026-06-21T02:21:45Z","symbol":"NIM1790250","token_address":"0x189942572cb30c3d48876bdccf5c080692abb6f4","type":"artist","uuid":"d5670af2-c3fd-4a97-8de1-f4e7d21f2ee6"}
album: New World
  type: MusicAlbum
  date published: 2012-12-10
album: New World Mettylectro Remix
  type: MusicAlbum
  date published: 2013-05-13
album: Calippo
  type: MusicAlbum
  date published: 2014-10-31
album: Calippo (Remixes)
  type: MusicAlbum
  date published: 2014-11-07
album: Capri
  type: MusicAlbum
  date published: 2015-10-30
album: Capri
  type: MusicAlbum
  date published: 2015-10-30
album: Use It
  type: MusicAlbum
  date published: 2016-05-27
album: Many Nights
  type: MusicAlbum
  date published: 2017-09-22
album: The Host
  type: MusicAlbum
  date published: 2019-12-31