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
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
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).