Eric W. Bond (born April 13, 1953) is an American economist. He specializes in international economics and economic theory. Bond is a professor of economics at Vanderbilt University since 2003. After
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 0x975dbe7b9f2c3c6b1619a2828cd7a41e139f3e6438f6df66ae3c65ab3fe32ae5. Chain 2 (Bitcoin): anchored in block 954008 (2026-06-16T21:31:27Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/339ad8a8-5e72-44ab-b5a0-a0f8fd51ca20.json and https://artists.proofprofile.net/proofs/artist/339ad8a8-5e72-44ab-b5a0-a0f8fd51ca20.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).