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⚖️ How Polymarket markets resolve — and what it means for your position

How Polymarket markets resolve via UMA's optimistic oracle — proposal, challenge window, payout at $1 or $0 — and what to check before you buy a share.

Resolution is the moment a market's question gets its official answer — and your shares become worth $1 or $0. Every Polymarket market states up front what counts as YES, which sources decide it, and when. Understanding how that answer is produced — and what happens to your position afterwards — is worth five minutes before your first trade.

In 10 seconds

  • Each market's resolution rules are published up front: what counts as YES, decided by what source, by when.
  • Polymarket resolves markets through UMA's optimistic oracle: an outcome is proposed, and stands unless someone disputes it during a challenge window.
  • After resolution, winning shares redeem for $1.00 each; losing shares go to $0.
  • In Polyfox, winning positions in your main wallet are redeemed automatically — sub-wallet positions are not.

The rules are part of the market

Before a market ever trades, its resolution criteria are published: the exact question, what evidence settles it, which source is authoritative, and the deadline. Experienced traders read these rules as carefully as the price — two markets can look identical in the headline and differ in the fine print ("by December 31", "according to the official count", "if postponed, then…").

That is the first practical takeaway: the rules, not your interpretation of the headline, decide what your shares are worth at the end. If the rules are ambiguous to you, that ambiguity is part of the risk you are buying.

Who decides the outcome

Polymarket markets resolve through UMA's optimistic oracle, a decentralized resolution process. At a high level:

  1. Someone proposes an outcome. After the event, a proposer posts the answer (YES, NO, or an edge-case outcome) along with a bond that they lose if they are wrong.
  2. A challenge window runs. The proposal is public, and anyone who disagrees can dispute it by posting their own bond. "Optimistic" means the proposal is assumed correct unless challenged.
  3. Undisputed → resolved. Most markets resolve this way: the proposed outcome stands and the market settles.
  4. Disputed → escalation. Contested outcomes escalate through UMA's dispute process, where token holders vote; this takes longer, and the market stays unsettled until it finishes.

The details (bond sizes, exact windows, voting mechanics) are UMA's and Polymarket's to define and can change — their official documentation is the source of truth. What matters for you as a trader: resolution is a process with a built-in delay, not an instant switch — so expect a gap between "the event clearly happened" and "the market has formally resolved".

What happens to your position

When a market resolves:

  • Shares of the outcome that occurred redeem for $1.00 each.
  • Shares of the other outcome become worth $0.

In Polyfox, winning positions held in your main wallet are redeemed automatically — the value lands in your balance without you tapping anything. Positions held in a sub-wallet are not auto-redeemed; you redeem those from the sub-wallet yourself.

Note what this means for the endgame of any position: once resolution is certain, the price converges to $1 or $0 — but until the market has formally resolved, you hold shares, not cash. If you'd rather not wait, you can usually sell before resolution at the market price, subject to liquidity.

Edge cases worth knowing

  • Disputed markets take longer. A dispute means the outcome goes through additional rounds; your position stays open in the meantime.
  • Some markets don't resolve cleanly YES or NO. A cancelled or genuinely ambiguous event can settle in an intermediate way under the market's rules — another reason to read them before buying.
  • Resolution is final. Once an outcome is finalized on-chain, it is settled — there is no appeal through Polyfox, and Polyfox (an independent tool, not affiliated with Polymarket) has no influence over any market's outcome.

This page describes the process at a high level; positions can lose all of their value, and nothing here is investment advice — see Legal notes.

Next steps

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