Alexandra "Alex" Cohen (born July 8, 1972) is an American radio and Emmy Award winning television journalist, roller derby skater, and author. Early life Cohen was born in New York City and moved to
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 0x2c9f756e03221378c5d070585cc24966eada348871de92654ee447c65a2dd109. Chain 2 (Bitcoin): anchored in block 954729 (2026-06-21T18:16:07Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fba6b5c1-01ac-4a26-a42f-68161b720f1f.json and https://artists.proofprofile.net/proofs/artist/fba6b5c1-01ac-4a26-a42f-68161b720f1f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).