Gülriz Sururi (24 July 1929 – 31 December 2018) was a Turkish drama actress and author. She presented a TV cooking show and co-owned a theatre. Biography She was born in Istanbul, Turkey on 24 July
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 0x807c2806977afb48ed84f111bd8005b3fa7605b6496d0866c8eab36fce635221. Chain 2 (Bitcoin): anchored in block 954615 (2026-06-20T22:44:50Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c5766e67-a93a-45af-83cf-d63c29448a19.json and https://artists.proofprofile.net/proofs/artist/c5766e67-a93a-45af-83cf-d63c29448a19.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).