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Unlock Auction

Provably fair

The hidden price can’t change once the auction is live.

Before the first click, we publish a fingerprint of every hidden price. When the auction ends we reveal the price, and your browser checks it against that fingerprint. If a single digit had changed, the check would fail.

See live auctions How a click-to-reveal auction works

Provably fair

Every hidden price is locked in before you click.

Fairness seal published for a lot on the floor right now

685570aa481c4b8a92f284df23f486db16ec62c4d8a1d03fcc729c24b340d91c

  • Sealed before the first click

    When an auction goes live we publish a cryptographic fingerprint of its hidden price, so it can’t be changed mid-auction.

  • Check it yourself

    When an auction ends the price is revealed and your browser verifies it against that fingerprint.

  • Every click is listed

    Who clicked and when is visible to everyone, live. The price stays hidden until you click.

  • An Australian business

    Unlock Auction is Australian owned and operated. ABN 61 672 040 845.

  1. 1 · Sealed

    The price is locked before the first click

    685570aa48…b340d91c

  2. 2 · Clicks

    Every click moves the price, and is listed

    $0.01$0.02$0.03$0.04…

  3. 3 · Revealed & checked

    $6.37

    Your browser confirms it matches the fingerprint from step 1.

21+products auctioned so far