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 0x13ef48e5e7ae02c4ec2d6f2324fea09d7fe88988b6d7f7345c5506de7b01a5b9. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/69f7651c-98aa-4780-9bef-6e653dd260bb.json and https://artists.proofprofile.net/proofs/artist/69f7651c-98aa-4780-9bef-6e653dd260bb.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
KRIPO SYLT - Mörderische Brandung (Nordseekrimi Küstenkrimi)