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 0x1b8ab866ec30b19ac1cd0d9417333210f11a60efb53b70983bb4c1193bdc6ebe. Chain 2 (Bitcoin): anchored in block 953741 (2026-06-15T04:44:49Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9f0e5d4c-2b2c-4909-919c-3bbb8eec88ab.json and https://artists.proofprofile.net/proofs/artist/9f0e5d4c-2b2c-4909-919c-3bbb8eec88ab.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Sturm über Elba [Der Commissario und die Dottoressa, Band 1 (ungekürzt)]
Nacht über Elba [Der Commissario und die Dottoressa, Band 2 (ungekürzt)]