Sarah Rose (born 1974) is an author and journalist known for D-Day Girls and For All the Tea in China. Early life and education Rose was born in Chicago and attended the University of Chicago Laborat
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 0x4a2c274c33d090a5aa0e0a58c68303fc2d077a1f06a8aba1ee66613a2616b98b. 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/72ff2b18-c12b-42f5-aba5-133d355394ce.json and https://artists.proofprofile.net/proofs/artist/72ff2b18-c12b-42f5-aba5-133d355394ce.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).