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 0x87b12b15c237a4ce2e181679c4d2294088ba5b413091a9fb877fefe396ed34f8. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d4c4bfd2-8d87-44cb-a6b0-c57fd1a0df87.json and https://artists.proofprofile.net/proofs/artist/d4c4bfd2-8d87-44cb-a6b0-c57fd1a0df87.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
A History of Us - Vom ersten Moment an [Willow-Creek-Reihe, Band 1 (Ungekürzt)]
A History of Us - Erst auf den zweiten Blick [Willow-Creek-Reihe, Band 2 (Ungekürzt)]
A History of Us - Nur drei kleine Worte [Willow-Creek-Reihe, Band 3 (Ungekürzte Lesung)]