Benjamin Solomon Carson Sr. (born September 18, 1951) is an American retired neurosurgeon, academic, author, and government official who served as the 17th United States Secretary of Housing and Urban
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 0x88bfe24948d51ae4569a1d0bf22bd5b7e62bfc8db14a25a703910c2c1adc67cc. Chain 2 (Bitcoin): anchored in block 953907 (2026-06-16T07:39:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/174bd47e-39b9-45e6-9818-d68713d7969d.json and https://artists.proofprofile.net/proofs/artist/174bd47e-39b9-45e6-9818-d68713d7969d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).