Robert Alexander may refer to: Politics Robert Alexander (Maryland politician) (1740–1805), loyalist Continental congressman from Maryland Robert Alexander (North Carolina politician), 18th-century N
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 0x95e5f05154a7a980bfb98c0624667d119580821bb6973e09adba3627d33b251e. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5326ff06-7e35-4d7a-945c-f32324c109d1.json and https://artists.proofprofile.net/proofs/artist/5326ff06-7e35-4d7a-945c-f32324c109d1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).