Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via BTC Prediction) Pick polygram.ink (preferred broker) |
100% | 0% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Open live market → |
Polymarket (direct) polymarket.com |
100% | 0% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Open live market → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Open live market → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Open live market → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Open live market → |
Outcome probabilities
Current market-implied probability for each outcome, from the live order book.
| Outcome | Probability |
|---|---|
| ↓ 63,000 | 100% |
| ↓ 62,000 | 22% |
| ↓ 61,000 | 4% |
| ↑ 64,000 | 3% |
| ↓ 60,000 | 1% |
| ↑ 71,000 | 0% |
| ↑ 70,000 | 0% |
| ↑ 69,000 | 0% |
| ↑ 68,000 | 0% |
| ↑ 67,000 | 0% |
| ↑ 66,000 | 0% |
| ↑ 65,000 | 0% |
| ↓ 59,000 | 0% |
| ↓ 58,000 | 0% |
| ↓ 57,000 | 0% |
| ↓ 56,000 | 0% |
Market context
Bitcoin needs to print the relevant strike on 1 August, so the market is really pricing a spot-check of where BTC trades around the settlement window rather than a full-month trend. On current market evidence, the crowd-implied 0% YES looks like an outlier against multiple external BTC forecasts clustering in the low-to-mid $60,000s, including CoinCodex’s August 2026 range of roughly $64,776 to $67,293 and a Finbold-tracked model average near $64,784[17][1]. Robinhood’s event page also shows adjacent thresholds around $62,900, $63,000 and $63,100 trading at very different implied prices, which underlines how tightly this contract can hinge on a few hundred dollars of spot movement near expiry[6].
Historical comparables suggest August BTC outcomes are often driven less by narrative and more by positioning, funding, and whether large holders lean into strength or fade it. Yahoo’s coverage of August 2026 price work flagged a median seasonal loss estimate near 8% and highlighted $60,965 as a key line between range trading and deeper downside, while CoinEdition framed the first ten days of the month around post-Fed positioning and ETF flow watch[3][5]. That matters because a contract priced at 0% YES is effectively assuming BTC will miss the relevant level by a meaningful margin, even though nearby analyst bands and rainbow-style valuation work still place August outcomes in a broad $58,000-$66,000 corridor[2][3].
Traders should watch exchange spot behaviour against derivatives signals: sustained positive funding and whale-led bids can squeeze BTC through nearby levels quickly, while heavy sell-side flows or ETF outflows can suppress any intraday break. The near-term catalyst set is macro as well as crypto-native, with Fed repricing, ETF flows, and any large USDC liquidity moves likely to affect risk appetite across BTC and ETH together[5][14]. If spot holds above the nearby $62,900-$63,100 area into the settlement window, the current 0% YES will look increasingly disconnected from live price action[6].
Methodology
Methodologically this overview focuses on on-chain pricing: Polymarket's live mid comes from the Polygon conditional-token order book and settles automatically in USDC. The other three venues — Kalshi, Betfair, Manifold — sit alongside as off-chain reference points so you can see how the contract translates across regulatory and settlement regimes.
Resolution & payout
Settlement is on-chain via UMA Optimistic Oracle. A proposer posts the outcome with a bond, a two-hour dispute window opens, then the smart contract lifts winning conditional tokens to 1 USDC and sends payments to holders' wallets automatically. No withdrawal fees beyond Polygon gas.
Off-chain venues (Kalshi, Betfair, Smarkets) settle in local fiat through bank-side clearing — faster than SWIFT, slower than on-chain. Manifold pays no real cash.
FAQ
- Why USDC and not ETH or USDT?
- USDC is the Polygon standard — audited reserves (Circle, monthly attestation), deepest order book, low gas costs. ETH volatility would distort probability quotes; USDT has thinner Polygon liquidity than USDC.
- What does a transaction cost on Polygon?
- Polygon gas is typically under $0.01 per transaction. A full trade cycle (Approve + Order + Fill) totals around $0.03 — compared to $5-50 on Ethereum mainnet.
- Can I use Bitcoin directly?
- No, Polymarket operates exclusively in USDC on Polygon. You can bridge BTC to USDC via an exchange or bridge service and deposit on Polygon — typically 10-30 minutes processing time.
- How does UMA secure the resolution?
- The UMA Optimistic Oracle uses a bond system: a proposer posts a bond, a two-hour challenge window opens. On dispute the losing side forfeits the bond — financial incentive for honest resolution.
- How volatile are crypto prediction markets?
- Crypto markets react to spot prices — a 5% BTC move typically shifts a "BTC above X by date" market 10-20%. Polymarket crypto market liquidity is usually six-figure USD, sufficient for active trading.
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