Four bidders, you and three house bidders, each lock the same deposit in a contract with the seller and send a sealed bid to the auctioneer. The highest bid wins and pays the second-highest. Two oracles rule each contract "won at" the price or "lost", and every contract closes into shielded notes. The world learns the clearing price; not who bid what, and not who won. Every transaction is real, on Zcash testnet.
Deposit – per bidder, the same for everyone. Second-price: the winner pays the second-highest bid and gets the rest of the deposit back; every other bidder gets all of it back.
One round runs at a time; everyone on this page watches the same one.
| Bidder | Contract | Sealed bid |
|---|
Four identical deposits, then four shielded closes. Nothing ties a transaction to a bidder or a bid.