Trade: Ethereum Up or Down - May 31, 1:05PM-1:10PM ET

Market context

This market captures a five-minute window of Ethereum price movement on 31 May 2026, settling against Chainlink's ETH/USD data feed rather than spot exchange prices. The resolution hinges on whether ETH closes at or above its opening level during the 1:05–1:10 PM ET interval. The 0% implied probability on the order book reflects extreme confidence in a downward move, though such compressed probabilities in short-duration markets often reflect thin liquidity and wide bid-ask spreads rather than certainty.

Five-minute price windows in crypto typically resolve based on intraday volatility patterns and order flow rather than fundamental shifts. Historical precedent suggests that ultra-short timeframes show near-random walk behaviour, with resolution outcomes heavily dependent on the exact microsecond of data capture and any slippage between Chainlink's aggregated price and actual trading venues. Markets of this duration rarely sustain directional conviction; the current 0% reading likely indicates minimal trading activity and a single large position anchoring the probability rather than genuine market consensus.

Traders should monitor Ethereum's broader price action in the hours preceding the settlement window, as macro catalysts—regulatory announcements, Federal Reserve communications, or major protocol updates—can drive volatility that persists into intraday windows. Chainlink's feed aggregates prices from multiple exchanges with a slight lag; any flash crash or liquidity event on constituent exchanges during the five-minute window could shift settlement. The illiquidity of this specific market means entry and exit costs may exceed expected value for most positions.

Resolution source

This market settles from the official outcome published at https://data.chain.link/streams/eth-usd. A proposer submits the final result to the UMA optimistic oracle on Polygon; the two-hour dispute window closes and payouts clear in USDC.

How to trade this market step by step

The mechanics for trading "Ethereum Up or Down - May 31, 1:05PM-1:10PM ET" are the same as any other PolyGram 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.

1. Sign in on polygram.ink with your email — no full KYC under $1,500 lifetime trading volume.
2. Deposit USDC on Polygon (lowest fees, ~$0.01 per transaction) or Ethereum. Funds credit after 12 confirmations.
3. Pick a side. Buy YES if you believe the event will happen; buy NO if you think it won't. The current YES price reflects the market's collective probability.
4. Size your position. If you stake 100 USDC at 0% YES, you'll receive shares that pay $200 if YES resolves true — a 100% gross return. If NO resolves, your shares are worth $0.
5. Set risk controls (optional). Stop-loss, take-profit, and limit-order types all supported. Use the trade ticket's slippage box to cap your maximum entry price.
6. Wait for resolution. When the event resolves on-chain via the UMA optimistic oracle, the winning side settles to 100¢ automatically and USDC hits your balance within seconds. Withdrawable to any wallet you control.

Key terms

YES / NO share

A binary outcome token that pays $1.00 if the underlying claim resolves true (YES) or false (NO), and $0 otherwise. The market price between 0¢ and 100¢ is the implied probability.

CLOB

Central limit order book. The matching engine that pairs YES buyers with NO buyers (effectively the same trade). Polymarket's CLOB on Polygon executes trades on-chain via the conditional-tokens framework.

Liquidity

USDC capital sitting in resting limit orders inside the order book. Deeper liquidity means smaller slippage on large trades and a tighter bid-ask spread.

UMA optimistic oracle

The on-chain dispute system that settles each Polymarket market. A proposer submits the outcome, a two-hour challenge window opens, and unchallenged proposals finalise the resolution.

Slippage

The difference between the displayed mid-price and your fill price. Affects market orders most; limit orders avoid slippage but may take time to fill.

Conditional token

ERC-1155 outcome share issued by Gnosis Conditional Tokens on Polygon. The token type that resolves to $1.00 or $0.00 at settlement.

See the full prediction-market glossary →

Frequently asked questions

Risk and regulatory note

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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