Bitcoin Up or Down on June 1?

Platform comparison

Market context

Bitcoin's price movement between noon ET on 31 May and noon ET on 1 June 2026 will determine this contract's outcome. The market currently prices a 4% probability that BTC/USDT will close higher on 1 June than on 31 May—a sharp skew towards downward movement over that specific 24-hour window. Settlement hinges on Binance's 1-minute candle closes at precisely those timestamps, with conditional tokens on Polygon settling via USDC once the window closes on 2 June at 16:00 UTC.

Intraday Bitcoin price movements of this scale are historically volatile but directionally constrained. Over comparable 24-hour periods in recent years, single-day moves exceeding 5% occur roughly 15–20% of the time, whilst moves under 2% are far more frequent. The 4% implied probability here suggests traders are pricing in either a specific bearish catalyst expected around that date or are reflecting the statistical baseline that any given day sees downward closure more often than upward. Without major scheduled announcements or macroeconomic releases pinned to late May or early June, this probability likely reflects mean reversion expectations rather than anticipated news.

Traders should monitor late-May Federal Reserve communications, any significant altcoin liquidations that might cascade into Bitcoin selling, and broader equity market positioning heading into the settlement window. Binance's operational status and any platform-level issues would affect price discovery directly. The narrow timeframe and reliance on a single exchange's candle data mean liquidity conditions and order-book depth at those exact timestamps carry outsized importance relative to longer-dated Bitcoin contracts.

Methodology

We track Bitcoin Up or Down on June 1? on the five venues with material liquidity for prediction markets. Live odds come from the Polymarket Polygon order book — the only source that ships real-time data under an open licence. For Kalshi, Betfair and Manifold we list platform attributes (fee, KYC, settlement, payment) instead of fabricated odds, because their APIs use non-comparable contract definitions.

Resolution & payout

Polymarket-based markets settle through the UMA Optimistic Oracle on Polygon. A proposer submits the outcome, a two-hour challenge window opens, and unchallenged proposals finalise the resolution. Payouts settle automatically in USDC the moment the result is final — no bookmaker, no delay.

Kalshi-based markets settle in USD via the CFTC-regulated clearinghouse. Betfair Exchange settles in GBP/EUR net of commission. Manifold is play-money and does not pay out real funds.

FAQ

Where can I trade this market with the lowest fees?

On Kalshi UK, which mirrors the Polymarket order book at 0% fees. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.

What's the difference between YES and NO shares?

A YES share pays $1.00 if the event happens, $0 otherwise. A NO share pays $1.00 if the event doesn't happen. The market price between 0¢ and 100¢ is the implied probability.

What does it cost to trade on Kalshi UK?

Zero. Kalshi UK routes every order to the live Polymarket order book; the only cost is the Polygon network fee, typically under $0.01 per transaction.

How fast are USDC deposits?

Polygon credits deposits after 12 confirmations — usually under 30 seconds. Withdrawals follow the same path and land back in your wallet within minutes.

Do I need to KYC for this market?

Not under $1,500 of lifetime trading volume. Above that threshold, Kalshi UK triggers a quick verification flow that finishes in minutes.