Bitcoin Up or Down - May 22, 5PM ET

Platform comparison

Market context

Bitcoin was trading in the high-$77,000s on Friday, so the key question for the 5pm ET Binance 1-hour candle is whether price can finish above its opening level rather than whether it can hold a particular headline number. Recent reference points suggest a fairly tight intraday range: Fortune put BTC at $77,447.38 at 9:15am ET, YCharts showed a May 22 daily level of $77,546.34, and Investing.com’s intraday data printed a session band between about $76,728.9 and $78,165.2. Against that backdrop, the crowd-implied 0% YES looks more like a quirk of market pricing than a clean statement that an upside close is impossible. On prediction venues, that sort of mispricing is easier to spot on platforms showing probability directly, whereas Betfair and Smarkets quote decimal odds and fees can materially change the effective edge for smaller moves; KYC also tends to be broader on US-facing books such as Kalshi and Robinhood than on offshore-style exchanges.

For this specific settlement, the main drivers are mechanical rather than macro: the candle uses Binance BTC/USDT, so the relevant watchpoints are spot-led moves, exchange-specific liquidity, and any late-day volatility around US market hours. If Bitcoin tracks the broader daily range seen in the sources above, a small move from open to close is enough to flip the result, making the opening print for the 1-hour candle more important than the session high or low. Traders often compare how each venue reflects that sensitivity: a 99% or 0% reading on one platform may translate into a very different decimal price elsewhere once commission and spread are included. No major scheduled US macro release is obvious from the Federal Reserve’s H.15 timing, but crypto can still move sharply on ETF flow headlines, regulatory comments, or a risk-on/risk-off equity impulse that spills into spot BTC before the settlement window closes at 22:00 UTC.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page compares Bitcoin Up or Down - May 22, 5PM ET 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 PolyGram, which mirrors the Polymarket order book at 0% fees.

Resolution & payout

Settlement is the biggest difference between the four platforms: Polymarket on-chain in USDC (instant), Kalshi USD via CFTC (T+1), Betfair and Smarkets in local currency via bank withdrawal (T+1 to T+3). PolyGram routes every trade directly into Polymarket's on-chain settlement, which is why payouts land fastest.

FAQ

Where can I trade this market with the lowest fees?

On PolyGram, 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'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.

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, PolyGram triggers a quick verification flow that finishes in minutes.