In this guide
Key takeaway: Polymarket is a decentralised prediction market where participants exchange YES/NO shares on real-world events denominated in USDC across the Polygon blockchain. Automated smart contracts manage all settlement procedures.
What is Polymarket fundamentally? Polymarket functions as a decentralised prediction marketplace: rather than wagering against a traditional bookmaker's built-in margin, you exchange positions with other market participants who hold opposing views. Market prices continuously adjust to reflect the aggregate probability assessment of the crowd — shifting instantaneously as fresh information emerges.
The basics: prediction markets
Prediction markets operate by allowing you to acquire shares representing specific outcomes. Each share is redeemable for $1 upon YES resolution, or worthless upon NO resolution. When you purchase a YES share for 40 cents ($0.40), you're implicitly estimating a 40% likelihood of that outcome materialising. Success doubles your capital; failure forfeits your investment.
Polymarket diverges from conventional bookmakers by eliminating the vigorish (the built-in margin). Instead, market participants themselves determine pricing through their collective buying and selling activity.
How Polymarket uses blockchain
Polymarket operates atop the Polygon blockchain (a layer-2 scaling solution layered upon Ethereum). This architecture delivers:
- Complete transparency and on-chain verifiability of all activity
- Autonomous smart contracts governing funding, trading, and settlement
- Elimination of centralised control over capital or result determination
- Near-instantaneous settlement rather than multi-day processing
USDC: the currency of Polymarket
Polymarket exclusively utilises USDC (USD Coin), a stablecoin maintaining a 1:1 correspondence with the US dollar. Participants remain insulated from cryptocurrency price fluctuations — your account value remains constant since 1 USDC perpetually equals $1.
How markets resolve
Upon occurrence of a predicted event, Polymarket engages the UMA Oracle (Universal Market Access) to finalise market outcomes. A designated "proposer" reports the result; a 2-hour challenge period permits objections; absent disputes, settlement becomes binding. Contested resolutions escalate to UMA token holders for decentralised arbitration.
Getting started on Polymarket
- Establish your account — register via email and fulfil identity verification requirements
- Fund your balance — transfer USDC through MoonPay, conventional banking, or existing cryptocurrency holdings
- Explore available markets — ranging across elections, athletics, digital assets, entertainment and beyond
- Acquire shares — select YES or NO and specify your investment amount
- Manage positions — liquidate holdings whenever desired prior to market conclusion
PolyGram streamlines this workflow via a mobile-optimised platform and straightforward email authentication. Start trading on PolyGram →
Why Polymarket prices are accurate
Prediction markets have repeatedly demonstrated superior forecasting performance relative to conventional surveys and specialist analysis. Throughout the 2024 US election cycle, Polymarket's probability assessments surpassed the accuracy of leading polling indices. The mechanism is straightforward: financial incentives compel participants to form unbiased judgements.