Auction Format
Deepnom supports four auction formats — English (open ascending, default), Sealed (one blind bid each), Dutch (price drops over time, instant close on first bid), and Hybrid (English + reserve reveal at a configurable price point).
English
The classic open-ascending auction. Bids are public, anti-snipe extension activates if a bid lands within the snipe window of close. Proxy bidding supported — set a max ceiling and the engine bids on your behalf only as needed.
Sealed
First-price sealed-bid. Each bidder gets one blind submission; amounts are hidden until close. Ties are resolved by timestamp (earliest wins). No proxy.
Dutch
Price descends from a starting ceiling toward the floor over the auction window. The first bidder to accept the live price wins immediately and the auction closes. No proxy, no extension.
Hybrid
English format with one twist: the reserve price is revealed publicly once the highest bid reaches a configurable percentage of (reserve - starting). Lets bidders see when they’re getting close without showing the reserve from the start.