thumb|Kathrin Schmidt in 2009 Kathrin Schmidt (born 12 March 1958 in Gotha, Bezirk Erfurt), is a German writer. She is known both for her poetry and prose. Life and work Kathrin Schmidt grew up in
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 0xf7c05cadff0a8a820e0a9be755f4b51c3b3079d4ac2c2ec90902c6abd71b6165. 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/bebe38af-a8df-4d00-859d-98960a5269ee.json and https://artists.proofprofile.net/proofs/artist/bebe38af-a8df-4d00-859d-98960a5269ee.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).