Resolution criteria on PolyGram: More markets for the Brazil Serie B game, scheduled for May 23 at 5:30 PM ET.
PolyGram is an on-chain prediction market where you trade YES or NO outcome shares with real USDC on Polygon. For this market, buy YES if you believe the event will happen, or NO if you think it won't. Your maximum loss is your stake — winning shares pay $1.00 each at resolution. Unlike sportsbooks, there is no house edge: prices are set by supply and demand from other traders and reflect the crowd's real-time probability.
Market outcomes
| Londrina EC (-2.5) | 27% YES | 73% NO |
| O/U 2.5 | 52% YES | 49% NO |
| Fortaleza EC (-1.5) | 33% YES | 68% NO |
| Londrina EC (-1.5) | 38% YES | 62% NO |
| Fortaleza EC (-2.5) | 25% YES | 75% NO |
| O/U 1.5 | 54% YES | 47% NO |
| O/U 3.5 | 48% YES | 52% NO |
| O/U 4.5 | 40% YES | 60% NO |
Fortaleza EC and Londrina EC will contest a Serie B fixture on 23 May 2026 at 17:30 ET. The market currently prices the proposition at 27% on Polymarket's order book, reflecting modest conviction amongst traders that additional markets will be offered for this specific match. The settlement window closes at 21:30 ET on match day, allowing roughly four hours post-kick-off for resolution criteria to be established and confirmed.
Historical precedent suggests that Polymarket's coverage of Brazilian Serie B matches has expanded incrementally as the league's profile has grown domestically and internationally. Comparable mid-tier fixtures have typically seen supplementary markets (player props, team statistics, specific outcome variations) materialised within 48 hours of kick-off, though this remains contingent on liquidity thresholds and platform prioritisation. The current 27% probability reflects baseline scepticism about whether this particular Fortaleza–Londrina encounter will attract sufficient trader interest to justify additional market creation.
Key variables include Polymarket's operational capacity during the settlement window, broader platform activity levels on 23 May, and whether either club's supporters or professional traders signal demand for granular betting options. Recent fixture scheduling announcements for Serie B typically arrive 7–10 days prior to match day; any unexpected roster changes, injury disclosures, or tactical developments could shift trader expectations about market depth. The proximity of the settlement deadline to final whistle means late-breaking information will have minimal impact on pricing.
This market settles from the official outcome published at https://www.cbf.com.br/futebol-brasileiro/competicoes/campeonato-brasileiro-serie-b. A proposer submits the final result to the UMA optimistic oracle on Polygon; the two-hour dispute window closes and payouts clear in USDC.
The mechanics for trading "Fortaleza EC vs. Londrina EC - More Markets" are the same as any other PolyGram sporting event contract. Each YES share resolves to $1 if the event happens, or $0 if it doesn't. The current price between 0¢ and 100¢ is the market's probability estimate, set live by the order book.
$0 in lifetime turnover and $2K of resting liquidity puts this market in the below the median by volume for sports contracts on PolyGram. Order-book depth is thin — large orders may need to be split across the book or executed as limit orders.
The market has been open for under a month — fresh enough that information asymmetry remains a real factor.
Higher-volume markets tend to have tighter spreads and faster price discovery — meaning the displayed YES/NO percentages are more likely to reflect the true crowd-implied probability rather than a single trader's directional view.
Resolution is sourced from https://www.cbf.com.br/futebol-brasileiro/competicoes/campeonato-brasileiro-serie-b. Settlement is executed by the UMA optimistic oracle on Polygon, with a 2-hour dispute window before payouts clear.
This prediction market is scheduled to close on 23 May 2026. After the resolving event occurs, settlement typically clears within 24 hours once the UMA optimistic oracle confirms the outcome. All payouts are in USDC on the Polygon network.
To trade on this prediction market, create a free PolyGram account at polygram.ink, deposit USDC via Polygon, and place a YES or NO order on the outcome you believe in. You can learn more on our how-it-works page. Your maximum loss is limited to your stake — there is no leverage or margin.
When the outcome is determined, winning YES shares pay out $1.00 each in USDC, while losing shares pay $0. Settlement is handled by the UMA optimistic oracle on Polygon — a proposer submits the result, a two-hour dispute window opens, and if uncontested, payouts are distributed automatically. You can withdraw your winnings to any Polygon wallet.
Prediction-market positions can lose 100% of staked capital. Outcomes are uncertain by definition — historical accuracy of crowd-implied probabilities is high in aggregate but not for any single market. PolyGram does not provide investment advice. Trade only with capital you can afford to lose.
Regulatory status varies by jurisdiction. Germany, the United States, and most EU countries treat Polymarket-style event contracts under one of three frameworks: financial derivative, gambling product, or unregulated novel asset. Consult local counsel before trading.
Explore more prediction market odds and trading opportunities on PolyGram: