# Using the Auction System
Auctions let you sell an NFT to the highest bidder over a set time window. Unlike a fixed-price listing, the final sale price is determined by competitive bidding, useful for high-value or rare NFTs where market demand is unknown.
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### Creating an Auction
Go to **My Profile**, open the NFT you want to auction, and click **Start Auction**.
Fill in the following fields:
* **Start date** — When bidding opens. Can be immediate or scheduled.
* **End date** — When bidding closes. No bids are accepted after this time.
* **Starting price** — The minimum bid required to start the auction.
* **Reserve price** *(optional)* — A hidden minimum. If the highest bid does not reach this amount, the auction ends without a sale.
Check the **Terms of Service** box and click **Create Auction**. Confirm the transaction in your wallet to publish the listing.
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### How Bidding Works
Once the auction is live, any connected wallet can place a bid. Each new bid must exceed the current highest bid. Bids are visible in the **Bids** section on the NFT detail page, showing bidder address, amount, and timestamp.
Funds are held on-chain for the duration of the auction. Outbid participants can reclaim their funds once they are no longer the highest bidder.
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