In this guide
Key takeaway: Polymarket is a decentralised prediction market where participants acquire YES/NO shares on real-world events utilising USDC on the Polygon blockchain. Automated smart contracts manage all settlement processes.
What is the mechanism behind Polymarket? Fundamentally, Polymarket functions as a prediction marketplace: rather than wagering against a bookmaker's built-in edge, you exchange positions with fellow traders holding opposing views. Market valuations mirror the aggregate probability assessment of the community — shifting continuously as fresh information emerges.
The basics: prediction markets
Within a prediction market, you acquire shares representing potential outcomes. Each share yields $1 upon YES resolution, or $0 upon NO resolution. Should you purchase a YES share for 40 cents ($0.40), you're expressing confidence in a 40% likelihood of that scenario materialising. Success means your investment doubles. Failure means your capital is forfeited.
Polymarket operates differently from conventional bookmakers in that it applies no built-in spread (the "vig"). Valuations emerge exclusively through the interplay of buyer and seller activity.
How Polymarket uses blockchain
Polymarket operates atop the Polygon blockchain (a layer-2 scaling solution anchored to Ethereum). This architecture delivers:
- Complete auditability and verifiability of all transactions across the distributed ledger
- Autonomous execution of account funding, trading, and settlement via smart contracts
- Elimination of centralised control over reserves or outcome determination
- Near-instantaneous finalisation rather than multi-day clearance periods
USDC: the currency of Polymarket
Polymarket exclusively facilitates trading through USDC (USD Coin), a stablecoin maintaining a 1:1 correspondence with the US dollar. Your account balance remains insulated from cryptocurrency price swings — each USDC unit perpetually equals $1.
How markets resolve
Upon determination of an event's conclusion, Polymarket engages the UMA Oracle (Universal Market Access) to finalise market settlements. An appointed "proposer" declares the outcome; a 2-hour challenge period permits objections; absent disputes, settlement becomes binding. Contested resolutions escalate to UMA token holders for decentralised adjudication.
Getting started on Polymarket
- Establish your account — register via email and fulfil identity verification requirements
- Fund your wallet — deposit USDC through MoonPay, direct banking, or existing cryptocurrency holdings
- Explore available markets — choose from 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 outcome determination
PolyGram streamlines this workflow through an intuitive mobile-optimised platform and passwordless email authentication. Start trading on PolyGram →
Why Polymarket prices are accurate
Prediction markets have repeatedly demonstrated superior forecasting performance relative to conventional polling methodologies and specialist commentary. Throughout the 2024 US election cycle, Polymarket's probabilistic assessments outpaced the accuracy of leading polling organisations. The mechanism is straightforward: financial exposure motivates rigorous, unbiased evaluation.