Bitcoin Up or Down on August 13?

Platform comparison

Market context

The market tests whether Bitcoin's price at noon ET on 13 August 2026 will be higher than its price at the same time on 12 August. The crowd has priced this as a 74% favourite for an up move, implying a 26% chance of a down move or flat close. Settlement hinges on Binance 1-minute candle closes at precisely 12:00 ET on both dates, making this a narrow intraday directional bet rather than a longer-term trend play.

Bitcoin's 24-hour volatility has historically ranged between 1–3% in most market regimes, though tail events can spike this considerably. Single-day moves of 2–4% occur roughly 15–20% of the time across typical market conditions. The 74% probability for an up move suggests the crowd is pricing in either a structural bullish bias or recent momentum that favours gains. Comparable one-day directional markets on major assets typically see consensus probabilities this high only when technical or macro tailwinds are evident; contrarian positioning often finds value when implied probabilities exceed 70% without corresponding catalyst strength.

Traders should monitor macroeconomic data releases scheduled for 12–13 August, particularly US inflation prints or Federal Reserve communications that could shift risk appetite. Bitcoin's correlation to equity futures and the dollar index remains material; any unexpected monetary policy signals would likely drive intraday volatility. Regulatory announcements from major jurisdictions or significant exchange flow data could also influence the noon-to-noon price action. The settlement window closes at 16:00 ET on 13 August, leaving a four-hour buffer after the final candle close for resolution verification.

Methodology

Methodologically we separate two layers: the live probability (Polymarket mid-price) and the platform attributes (fee, KYC, settlement currency, payment rails). That keeps the comparison honest — a single canonical probability across the row, with the venue-by-venue trade-offs spelt out in the columns next to it.

Resolution & payout

At resolution the UMA oracle takes over: a proposer posts the outcome with a bond, any token holder can dispute within two hours. Without dispute the result is accepted and the smart contract distributes USDC instantly.

On Kalshi (CFTC-regulated) resolution runs through their in-house clearing engine in USD. Betfair Exchange settles after match end in the account's local currency. Manifold pays no cash — only its in-platform "mana" currency.

FAQ

Where can I trade this market with the lowest fees?

Polymarket is geo-blocked in the US/UK/EU. The easiest 0%-fee broker into the same order book is Who Will Win 2026. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.

Is this market available outside the US?

Polymarket itself is geo-blocked in the US/UK/EU. Always check the legal status of prediction markets in your jurisdiction before trading.

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.

Do I need to KYC for this market?

On Polymarket directly, no — it's wallet-based. Intermediary brokers like Who Will Win 2026 trigger KYC only above $1,500 of lifetime trading volume; under that you trade pseudonymously with a single wallet address.

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.