Bitcoin price on May 28?

Platform comparison

Active sub-markets

Market context

Bitcoin's noon ET price on 28 May 2026 will be determined by the Binance BTC/USDT 1-minute candle close at that specific timestamp. The market resolves YES only if the price lands within a particular bracket; otherwise it resolves NO. The 1% implied probability suggests traders view a YES outcome as exceptionally unlikely, though the exact bracket threshold remains unstated in the market description.

Historical volatility in Bitcoin's intraday moves offers limited predictive value for a single-minute candle two years forward. Comparable markets on Polymarket, Kalshi and Betfair show divergent liquidity patterns: Polymarket's decimal odds format (currently reflecting ~99:1 against YES) attracts retail flow, whilst Kalshi's binary structure and KYC requirements tend to concentrate institutional positioning. Smarkets' commission-based model (rather than spread-based) sometimes reveals sharper probability edges on tail events. The 1% probability here aligns with how these platforms typically price extreme price movements, though Betfair's deeper order books occasionally show fractionally higher odds on crypto tail risks.

Traders monitoring this market should track Bitcoin's macroeconomic catalysts through 2025–2026: Federal Reserve policy shifts, spot ETF flows, and regulatory announcements from the SEC or international bodies. Binance's operational status and any platform-specific technical issues on the settlement date carry non-trivial tail risk. The resolution mechanism's reliance on a single 1-minute candle introduces microstructure risk absent from daily-close markets; flash crashes or low-volume periods could create settlement disputes, a consideration less prominent on platforms with higher-frequency data feeds.

Methodology

This page compares Bitcoin price on May 28? specifically across Polymarket, Kalshi, Betfair Exchange and Smarkets. Live odds come from the Polymarket order book; the other venues' contract details are maintained manually because their APIs aren't directly comparable. Every CTA routes to Polymarket Alternative UK, which mirrors the Polymarket order book at 0% fees.

Resolution & payout

Polymarket settles via UMA Optimistic Oracle on Polygon. A proposer posts the outcome with a bond, the two-hour window runs, then the smart contract pays USDC.

Kalshi settles USD through the CFTC-regulated clearinghouse — the cleanest variant, with heavier KYC. Betfair Exchange settles in account currency (GBP/EUR), net of 2-5% commission. Smarkets follows the same model as Betfair with a lower default 2% commission.

FAQ

Where can I trade this market with the lowest fees?

On Polymarket Alternative 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.

How does resolution work?

Through the UMA Optimistic Oracle on Polygon: a proposer submits the outcome, a two-hour challenge window opens, and USDC payouts settle automatically once the result is final.

What does it cost to trade on Polymarket Alternative UK?

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

Do I need to KYC for this market?

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

How reliable are the quoted odds?

The YES/NO percentages are the live mid-prices of the Polymarket order book. On deep markets they move every few seconds; on thinner ones you'll see short plateaus.