KKL may stand for: Kuapa Kokoo Limited Keren Kayemet LeYisrael, the Hebrew name for the Jewish National Fund Kampala Kids League (Uganda) Kultur- und Kongresszentrum Luzern, the German name for the Cu
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 0x36d86d49ca8af6ec9c339a1001bd24868dd1f5d69a86069631f7b10b1649ae87. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/afce1e9a-715b-443c-99d1-0512f4212891.json and https://artists.proofprofile.net/proofs/artist/afce1e9a-715b-443c-99d1-0512f4212891.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).