Bitcoin price on June 21?

Platform comparison

Active sub-markets

Market context

Polymarket has this contract at **0% YES** right now, which leaves the market effectively pricing in a Binance BTC/USDT 1-minute close at noon ET that lands outside the resolution brackets, with settlement tied to the final Binance candle rather than a broad spot average. The trading logic is simple on-chain: USDC collateral on Polygon is used to buy conditional tokens, and the outcome is determined only by the Binance **1m** candle close for **BTC/USDT** at **12:00 ET** on the specified date.

That near-zero price should be read against Bitcoin’s current level around **$64,000** on Binance, where intraday moves of a few hundred dollars are routine and the market can still gap through narrow outcome bands in a single minute. Comparable cases on prediction markets show that very low implied probabilities often reflect a belief that the referenced print will miss the relevant range rather than a view on the broader trend, especially when the settlement rule depends on one timestamp and one venue. Binance’s own BTC page shows live pricing, recent 24-hour volume and the usual volatility caveat, all of which matter more here than long-run fundamentals.

A trader watching this should focus on anything that can move BTC sharply into the settlement window: macro data surprises, Federal Reserve messaging, ETF flow headlines, exchange-specific incidents, or large spot/derivatives liquidations. Because the market resolves off Binance’s reported minute close, liquidity on that venue at noon ET matters as much as the wider crypto backdrop; a brief wick, a thin book or a fast reversal can decide the bracket. The practical dependency is therefore not just Bitcoin direction, but whether price is still being actively repriced on Binance at the exact minute the contract references.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page reviews Bitcoin price on June 21? across five venues. We show live odds for Polymarket-based markets (sourced from the Polygon order book); for other venues we list platform attributes, since the comparable contracts are not exposed via a public API on every venue. Every CTA points at Kalshi UK — the application we operate, where you trade directly against the Polymarket order book at 0% fees.

Resolution & payout

Settlement runs on-chain. Polymarket's contract logic separates YES and NO shares as conditional tokens; at resolution the winning share lifts to $1.00 and the losing one to $0. The outcome input comes from the UMA Optimistic Oracle, which secures against bad resolution with a bond + dispute window.

Once finalised, the smart contract pays USDC to the holders' wallets within minutes — no withdrawal fees beyond Polygon network gas. Kalshi settles in USD via CFTC clearance, Betfair in account currency net of commission, Manifold in play-money mana with no cash-out.

FAQ

Where can I trade this market with the lowest fees?

On Kalshi UK, 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.

Is this market available outside the US?

Kalshi UK is available in most jurisdictions where Polymarket isn't directly accessible. Polymarket itself is geo-blocked in the US/UK/EU. Always check local regulations.

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?

Not under $1,500 of lifetime trading volume. Above that threshold, Kalshi UK triggers a quick verification flow that finishes in minutes.

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.