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Bitcoin price on July 31?

Polymarket vs Kalshi vs Betfair vs Smarkets for "Bitcoin price on July 31?" — live odds, fees and KYC side-by-side.

62,000-64,000 100% <56,000 0% 56,000-58,000 0% 58,000-60,000 0% Volume: $110K Closes: 31 Jul 2026
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Bitcoin price on July 31?

Platform comparison

PlatformYES oddsNO oddsFeeKYCSettlement
Polymarket (via Robinhood Prediction Markets) Pick
polygram.ink (preferred broker)
100% 0% 0% (USDC on-chain) No-KYC up to $1,500 USDC, auto via UMA oracle Go to the live market →
Polymarket (direct)
polymarket.com
100% 0% 0% Geo-blocked in US/UK/EU USDC, on-chain Go to the live market →
Kalshi
kalshi.com
Up to 7% per trade US-only, KYC required USD Go to the live market →
Betfair Exchange
betfair.com
2-5% commission Full KYC from first trade GBP / EUR Go to the live market →
Manifold Markets
manifold.markets
Play-money (mana) None — play-money Mana (no cash-out) Go to the live market →

Outcome probabilities

Current market-implied probability for each outcome, from the live order book.

OutcomeProbability
62,000-64,000100%
<56,0000%
56,000-58,0000%
58,000-60,0000%
60,000-62,0000%
64,000-66,0000%
66,000-68,0000%
68,000-70,0000%
70,000-72,0000%
72,000-74,0000%
>74,0000%

Market context

Bitcoin’s noon ET close on Binance on 31 July is being priced as an extremely unlikely upside outcome, with the crowd currently assigning 0% YES on this market. On platform comparison, that matters because Polymarket-style markets quote a direct probability, while Kalshi and Betfair usually express the same view as contract prices or decimal odds, and Smarkets typically sits somewhere in between with exchange-style pricing and commission; the economic signal is the same, but fees and access differ, especially once KYC and jurisdictional limits are applied.

The historical frame is that Bitcoin is trading in the low- to mid-$60,000s, with recent 2026 closes and live prints clustered around that area rather than near the much higher brackets that would settle this market YES.[3][6][8][10] Predicate’s ladder for the same date shows the heaviest interest in the $60,000-$64,000 band, with smaller volume above $66,000 and below $58,000, which implies the market is really about whether BTC can hold the current range rather than break far beyond it.[2] Binance’s settlement rule also makes the exact 12:00 ET 1-minute candle close decisive, so a brief spike outside the range only matters if it is captured in that specific print.

Traders should watch macro and crypto-specific catalysts that can move BTC into that one-minute window: Federal Reserve messaging, any shift in US risk assets, and large ETF flow days can all affect the spot price into the close. Recent coverage has also highlighted short-term model forecasts clustering around the low-$60,000s to mid-$60,000s by month-end, which is not a settlement signal but does reflect the prevailing market backdrop.[4] For market design, Kalshi and Smarkets usually make the probability-to-price translation more explicit than Betfair’s decimal-odds view, while Binance-settlement exposure here makes venue access, fee drag, and whether a trader can actually post size before the window closes more important than headline probability alone.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

We read Bitcoin price on July 31? from four platform perspectives: Polymarket (on-chain CLOB), Kalshi (CFTC-regulated exchange), Betfair Exchange (sports book exchange), Smarkets (peer-to-peer betting exchange). Polymarket's live mid is the canonical probability; the side-by-side columns benchmark fees, KYC, settlement currency and deposit rails so you can choose the venue that fits your jurisdiction and trade size.

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). On-chain settlement clears in minutes — the fastest payout path of the four.

FAQ

Which platform has the deepest liquidity?
Polymarket — by a wide margin. Top markets reach $50-500M volume, Kalshi ~$200M cumulative, Betfair similar. Deeper liquidity means your trade moves the quote less.
Is Betfair a Polymarket alternative?
Only partially. Betfair Exchange is UK-focused with a sports-betting emphasis; they have politics markets but with thinner liquidity than Polymarket. Settlement in GBP/EUR, 2-5% commission on winnings.
What about Smarkets as an alternative?
Smarkets is a UK betting exchange with a lower default commission (2%) than Betfair. Liquidity on political markets is below Polymarket, comparable to Kalshi. Geo-blocked in many jurisdictions.
Which platform is accessible globally?
Polymarket is geo-blocked in the US/UK/EU. Kalshi is US-only. Betfair and Smarkets are UK-restricted. Robinhood Prediction Markets has a different geo footprint and routes to Polymarket's order book at 0% fees.
Which platform supports Klarna/SOFORT?
Directly: none. Polymarket accepts only USDC on Polygon. Robinhood Prediction Markets offers a fiat on-ramp via Klarna or SOFORT (DE/AT/CH) and converts internally to USDC for the Polymarket order book. T+1 processing.
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Related Topics

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