Robert Anthony Snow (June 1, 1955 – July 12, 2008) was an American journalist, political commentator, anchor, columnist, musician, and the 25th White House press secretary under President George W. Bu
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 0xa5abf0b086b0ece89571ca23efa1cd5029f958116602eb5dbfc5419fe091f7ea. Chain 2 (Bitcoin): anchored in block 954346 (2026-06-19T03:51:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9308a944-37af-4e0f-94f4-19da05036f3c.json and https://artists.proofprofile.net/proofs/artist/9308a944-37af-4e0f-94f4-19da05036f3c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).