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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x993fa9957cacbb5108f7047f3de3928107e667b167a6ff58fa916b2f5a822266. Chain 2 (Bitcoin): anchored in block 953997 (2026-06-16T20:07:57Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1b44e084-e079-4178-93e3-b7ab1f7226ff.json and https://artists.proofprofile.net/proofs/artist/1b44e084-e079-4178-93e3-b7ab1f7226ff.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
Teheran im Bauch [Wie meines Vaters Land mich fand (Ungekürzt)]
Diese bescheuerte Fremdheit in meiner Seele [Autobiografischer Roman (Ungekürzt)]