Bitcoin price on August 20?

Platform comparison

Market context

Bitcoin is trading around $68,470, so a market that currently prices the noon ET Binance close at 0% YES is leaning hard to the underdog side. That makes the consensus effectively “no move above the relevant bracket”, with any value more likely to sit on a contrarian case for a late-session squeeze rather than a clean break higher.

The recent tape gives mixed signals. Bitcoin ran to above $65,300 earlier in August and several reports pointed to a strong ETF bid, including a roughly $853 million weekly inflow into spot bitcoin funds in the week to 7 August and more net inflows on 18 August. At the same time, the flow picture has not been one-way: daily ETF totals turned negative on 12-14 August before stabilising, which argues against treating the favourite as a lock.

For the next few hours, traders should watch U.S. spot ETF flow data, broader risk sentiment, and any sharp move in dollar liquidity or rates, because those remain the main intraday drivers into the New York noon print. The handicapper’s angle is that the market is already priced as if the close will land safely below the target band; the value case is a late continuation of the August bid, while the contrarian angle is that the low implied probability leaves room for a trap if flows and momentum strengthen into the settlement window.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

We track Bitcoin price on August 20? across the five venues with material prediction-market liquidity. The probability shown is the live Polymarket mid; the comparison rows summarise how each venue treats the underlying contract — fees, KYC thresholds, settlement currency, deposit options. The highlighted row marks the cheapest route into Polymarket's order book.

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.

UK Frequently Asked Questions

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. 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.

Is Polymarket legal in the UK?

Polymarket is accessible to UK traders but is not UKGC-licensed. It operates under US CFTC jurisdiction. UK residents face no domestic legal prohibition on using it, but UKGC consumer protections do not apply. For UKGC-regulated alternatives, Betfair Exchange and Smarkets offer similar prediction-style markets.

Do I pay tax on prediction market profits in the UK?

UKGC-licensed platform profits (Betfair, Smarkets) are typically tax-free gambling winnings for UK individuals. Polymarket profits involve USDC crypto transactions, which HMRC treats as Capital Gains Tax events. Keep full transaction records and report via Self Assessment if gains exceed £3,000 per tax year.

How do I deposit on Polymarket from the UK?

UK traders typically fund Polymarket via Coinbase UK, Kraken or Revolut — buying USDC with GBP and transferring to a Polygon-compatible wallet (MetaMask, Coinbase Wallet). Polymarket's onboarding walks you through the bridging process. Typical GBP-to-USDC conversion costs 0.5–1%.