What are crypto prediction markets?

Crypto prediction markets are on-chain smart contracts where you buy YES or NO shares on a future crypto event (e.g. "BTC above $100k by year-end"). The market price between 0¢ and 100¢ is the implied probability.

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.

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.

Clacton by-election Winner — On-Chain Odds

Name: Clacton by-election Winner
Start: 2026-07-07T15:05:40.402Z
End: 2027-06-30T23:59:00.000Z

Platform comparison

Platform	YES odds	NO odds	Fee	KYC	Settlement
Polymarket (via BTC Prediction) Pick polygram.ink (preferred broker)	95%	5%	0% (USDC on-chain)	No-KYC up to $1,500	USDC, auto via UMA oracle	Open live market →
Polymarket (direct) polymarket.com	95%	5%	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
Nigel Farage	95%
Person B	50%
Person C	50%
Person D	50%
Person E	50%
Person F	50%
Person G	50%
Person H	50%
Person I	50%
Person J	50%
Person K	50%
Person L	50%
Person M	50%
Person N	50%
Person O	50%
Person P	50%
Person Q	50%
Person R	50%
Person S	50%
Person T	50%
Person U	50%
Person V	50%
Person W	50%
Person X	50%
Person Y	50%
Person Z	50%
Person AA	50%
Person AB	50%
Person AC	50%
Person AD	50%
Person AE	50%
Person AF	50%
Person AG	50%
Person AH	50%
Person AI	50%
Person AJ	50%
Person AK	50%
Person AL	50%
Person AM	50%
Person AN	50%
Person AO	50%
Person AP	50%
Person AQ	50%
Person AR	50%
Other	50%
Count Binface	5%
Giles Watling	0%
Jovan Owusu-Nepaul	0%
Matthew Bensilum	0%
Natasha Osben	0%
Tony Mack	0%
Andrew Pemberton	0%

Market context

Based on real-money crowd forecasting, clacton by-election winner stands at 95% likelihood according to current market consensus. A by-election for the United Kingdom parliamentary constituency of Clacton is expected to be held soon following the announced resignation of incumbent Nigel Farage. This market w…

Methodology

This page reads Clacton by-election Winner on-chain. Polymarket's quote comes directly from the Polygon order book — the only comparable venue with on-chain settlement. Kalshi (USD, off-chain), Betfair (GBP/EUR, off-chain) and Manifold (play-money) are listed alongside for venue context. Every CTA routes to BTC Prediction, which mirrors the Polymarket order book directly.

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

What are crypto prediction markets?: Crypto prediction markets are on-chain smart contracts where you buy YES or NO shares on a future crypto event (e.g. "BTC above $100k by year-end"). The market price between 0¢ and 100¢ is the implied probability.
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.
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.

James WilliamsPrediction Market Analystand

David ParkSports Data Analyst

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Clacton by-election Winner

Platform comparison

Outcome probabilities

Market context

Methodology

Resolution & payout

FAQ

Trade Clacton by-election Winner on BTC Prediction

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