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 0xdc06456b2e5f7550ebe7b8e0a8b6b1ff29c4f5ed09194b7f2489132207ef2cf0. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/495b5d8d-6235-46d4-854b-56df674411bf.json and https://artists.proofprofile.net/proofs/artist/495b5d8d-6235-46d4-854b-56df674411bf.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Marmor, Wein und Bienengift: Ein Krimi aus Südtirol
Liebe, Mord und Schürzenjäger (Ein Krimi aus Südtirol)