@0xmamareza.eth

Howdy Fellers ? Your bro is back with part 13 of diving into GREAT @zama 💛 🟨 Sealed-bid auctions | privacy that still proves the winner 🟨 Most on-chain auctions leak too much. With FHE, bids are submitted encrypted, compared under the hood, and the contract only reveals who won (and what they pay if needed). No spectators, no copycats, no last-second sniping from leaked numbers. How it flows 🟡 • You encrypt your bid client-side and submit it. • Lightweight proofs show the bid is valid (right range/format) without exposing it. • Coprocessors compare encrypted bids; the chain verifies results, not values. • After the close, policy decides what opens: winner only, or winner + clearing price. Why it works for markets 🟡 • No info leakage during bidding → fewer games, saner pricing. • Public verifiability: anyone can re-run the encrypted comparisons and see the same ciphertext result. • Programmable disclosure: reveal nothing, a little, or exactly what rules require. Ops & fees 🟡 • Same Solidity flow on fhEVM; pay gas + a protocol fee (USD-denominated, auto-converted to $ZAMA). • KMS nodes hold split keys; coprocessors do the heavy math. ---- fairer outcomes, less MEV bait, and audits without doxxing bids. In my opinion, this is how on-chain auctions should feel.

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