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 0x068ac5b2e8a3d8e2a66c99bb34bcdbaf1ef2119c8cbcdb8e82f0b8ab23c5a4db. 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/469c0cc9-ced7-4961-897e-118fe44e25bb.json and https://artists.proofprofile.net/proofs/artist/469c0cc9-ced7-4961-897e-118fe44e25bb.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Das Drachenmädchen (Das Zeichen des Drachen)
Das Drachenmädchen (Die Drachen der neuen Welt)
Das Drachenmädchen (Das Schicksal der Drachen)