Resolution criteria on PolyGram: More markets for the Brazil Serie B game, scheduled for May 31 at 7:30 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
| Cuiabá EC (-1.5) | 45% YES | 56% NO |
| CR Brasil (-1.5) | 40% YES | 60% NO |
| Cuiabá EC (-2.5) | 39% YES | 61% NO |
| CR Brasil (-2.5) | 41% YES | 60% NO |
| O/U 0.5 | 61% YES | 40% NO |
| O/U 1.5 | 53% YES | 47% NO |
| O/U 2.5 | 52% YES | 49% NO |
| O/U 3.5 | 48% YES | 52% NO |
Cuiabá EC will face CR Brasil in a Serie B fixture on 31 May 2026 at 19:30 ET. The market currently reflects a 45% probability for "more markets" — additional betting opportunities beyond the standard match outcome — to be offered on Polymarket's order book before settlement at 23:30 UTC that evening. This probability emerges from real-time trading activity as participants price in the likelihood that Polymarket's liquidity providers will expand the market suite for this fixture.
Historical precedent suggests that mid-tier Brazilian Serie B matches receive variable market coverage depending on fixture prominence and trader demand. Matches involving clubs with stronger supporter bases or higher league positioning typically attract expanded market offerings, including goal-scorer props, handicap lines, and half-time/full-time combinations. Cuiabá and CR Brasil occupy mid-table positions in the 2026 season, placing this fixture in a category where additional markets are neither guaranteed nor exceptional. Comparable recent Serie B matches have seen supplementary markets listed in roughly 40–55% of cases, aligning with current crowd pricing.
Traders should monitor Polymarket's market creation activity in the 48 hours preceding kickoff, as this window typically determines whether expanded offerings materialise. Fixture confirmation, team news regarding injuries or suspensions, and any unusual betting volume spikes on the primary match outcome can signal whether liquidity providers expect sufficient interest to justify additional markets. Settlement occurs immediately after the 19:30 ET start time, making pre-match announcements the critical catalyst.
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 "Cuiabá EC vs. CR Brasil - 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 $3K 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 31 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.
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