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 0xb03e0715d4eff4e3c3d3e30b2cc0e5405e058e9b7e70531b9d3aec2d09b23dc3. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bf30f2eb-b16e-4e8f-8d54-886a34ad79f5.json and https://artists.proofprofile.net/proofs/artist/bf30f2eb-b16e-4e8f-8d54-886a34ad79f5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Der Weg ins Leben - Im Anfang liegt alles / Zeit und Ruhe
Der Weg ins Leben - Chancen einer besonderen Zeit / Themen vor und nach der Geburt
Der Weg ins Leben - An der Schwelle zur Welt / Neue Gefühlswelt nach der Geburt
Serienmörder im Europa des 20. Jahrhunderts (1)
Das Bildnis des Dorian Gray (Vol. 1 - Vol. 8)