Derya Can Göçen (born Derya Can on October 12, 1979) is a Turkish world record holder female free-diver and school teacher. Family life Derya Can was born in Çanakkale, Turkey on October 12, 1979. Sh
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 0xdf31d95b601bd0d772587d050ed1e3e1c18bbeeeef650dfaeb90cae07ce3b75d. Chain 2 (Bitcoin): anchored in block 953697 (2026-06-14T21:49:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6924aa34-aca2-43a7-9fbc-e446b5384a66.json and https://artists.proofprofile.net/proofs/artist/6924aa34-aca2-43a7-9fbc-e446b5384a66.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).