thumb|Actress Sophie von Kessel Sophie von Kessel (born October 12, 1968 in Mexico City) is a German actress, best known for her roles in Schloß Hohenstein (1992–1995), The Dragon Ring (1994), Alles a
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 0xeecd4717c90f8ac409fea6901783d6ae2010c97beda1cc3c5b263a712d0e3192. Chain 2 (Bitcoin): anchored in block 953783 (2026-06-15T12:24:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d665f0ff-cf60-4b05-a03c-4eb7b582a283.json and https://artists.proofprofile.net/proofs/artist/d665f0ff-cf60-4b05-a03c-4eb7b582a283.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).