Farida Khalaf (born circa 1995) is the pen name of a Yazidi woman who was abducted by ISIS as teenager in 2014 and sold into slavery as part of the Yazidi genocide. ISIS moved through northwestern Ira
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 0xcc174ac56acb71a843f2b3f9999d18ffd280abde95ba1f2449d386df5f469cfa. Chain 2 (Bitcoin): anchored in block 954174 (2026-06-18T03:01:36Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7dfe44a6-cb0d-4ba6-b8d5-61f7c6c47d24.json and https://artists.proofprofile.net/proofs/artist/7dfe44a6-cb0d-4ba6-b8d5-61f7c6c47d24.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).