Sarah Jane Brady (née Kemp; February 6, 1942 – April 3, 2015) was a prominent advocate for gun control in the United States. Her husband, James Brady, was press secretary to U.S. president Ronald Reag
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 0xa41da23db05d888531c2e7c07ac909df6fef6b00011470842386c0beaef6ac4e. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fa2059a0-2a6d-449c-8f4e-1ae835eeaad7.json and https://artists.proofprofile.net/proofs/artist/fa2059a0-2a6d-449c-8f4e-1ae835eeaad7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).