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 0xa7e5618f11468f7cfb927097b89a1d24e57aee8af6cfae36ceca594c55f04c1f. Chain 2 (Bitcoin): anchored in block 954014 (2026-06-16T22:46:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/276be111-ac12-4d2d-8296-2336683c4687.json and https://artists.proofprofile.net/proofs/artist/276be111-ac12-4d2d-8296-2336683c4687.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Wodka, Weiber, Wasserleiche [Privatdetektiv Sven Rübel, Band 2 (ungekürzt)]
Die Hinrichtung [Authentische Kriminalfälle (ungekürzt)]
Durch die Hölle [Wahre Kriminalfälle (ungekürzt)]
Rubel, Rotlicht, Raketenwerfer [Privatdetektiv Sven Rübel, Band 1 (ungekürzt)]
E.T.A. Hoffmann [Ein Lebensbild in Anekdoten (ungekürzt)]
Die letzte Baustelle [Authentische Kriminalfälle, Band 3 (ungekürzt)]