1. FC Kaiserslautern
type: MusicGroup
description: 1. Fußball-Club Kaiserslautern e. V., also known as 1. FCK, FCK (), FC Kaiserslautern (), K'lautern or colloquially Lautern (), is a German sports club based in Kaiserslautern, Rhineland-Palatinate. I
popularity: 4
followers: 182
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xa6e863846b5993c24b7fb72bf9df742c4ae8b7569a10fd0c753d0d5a2e17bc0e
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954066
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954066
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/668106e8-8991-4ed9-aced-eb19083d488a.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/668106e8-8991-4ed9-aced-eb19083d488a.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/668106e8-8991-4ed9-aced-eb19083d488a
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:11:48Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xa6e863846b5993c24b7fb72bf9df742c4ae8b7569a10fd0c753d0d5a2e17bc0e","name":"1. FC Kaiserslautern","registered_at":"2026-06-17T01:23:40Z","symbol":"NIM1237024","token_address":"0x19c2e555df3fd67caa6bc1538167656f6ef203fb","type":"artist","uuid":"668106e8-8991-4ed9-aced-eb19083d488a"}
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 0xa6e863846b5993c24b7fb72bf9df742c4ae8b7569a10fd0c753d0d5a2e17bc0e. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/668106e8-8991-4ed9-aced-eb19083d488a.json and https://artists.proofprofile.net/proofs/artist/668106e8-8991-4ed9-aced-eb19083d488a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
  text: {"copyright_id":"0xa6e863846b5993c24b7fb72bf9df742c4ae8b7569a10fd0c753d0d5a2e17bc0e","name":"1. FC Kaiserslautern","registered_at":"2026-06-17T01:23:40Z","symbol":"NIM1237024","token_address":"0x19c2e555df3fd67caa6bc1538167656f6ef203fb","type":"artist","uuid":"668106e8-8991-4ed9-aced-eb19083d488a"}