How to start betting on Polymarket, Predict.fun, and Jupiter: wallets and funding
Prediction markets do not take bank cards: you connect a crypto wallet, fund it on the right chain, and buy Yes/No outcome shares. POOL BTC walks through MetaMask and Rabby, deposits, and your first bet on the three venues in the Predict hub.
TL;DR: Polymarket: MetaMask/Rabby + Polygon + USDC. Predict.fun: same EVM wallet + BNB Chain + USDT/USDC. Jupiter: Phantom/Solflare + Solana + USDC. Links: pool-btc.com/predict/en/. World Cup 2026 prediction markets overview.
What is a prediction market and why a wallet?
You buy a Yes or No token priced $0.01-$0.99. If the event happens, Yes pays $1. Venues are non-custodial: funds sit in your wallet or a smart contract. No wallet means no access.
What is MetaMask?
MetaMask is a browser extension (Chrome, Firefox, Brave, Edge). It creates keys on your device. The 12-word seed grants full access: write it on paper, not in cloud or chat. MetaMask connects to dApps: Polymarket and Predict.fun ask you to sign transactions. It supports Ethereum, Polygon, BNB Chain, and many EVM networks.
What is Rabby and how is it different?
Rabby is an alternative EVM wallet from the DeBank team. Also a browser extension with the same seed phrase model. Pros: human-readable transaction preview, auto network switch on sites, warnings on risky contracts. For Polymarket and Predict.fun Rabby and MetaMask are interchangeable: pick one, do not duplicate seeds.
Which wallet for which venue?
| Venue | Chain | Wallet | Bet in | Gas |
|---|---|---|---|---|
| Polymarket | Polygon | MetaMask, Rabby | USDC | MATIC (~$0.01 per trade) |
| Predict.fun | BNB Chain | MetaMask, Rabby, Trust Wallet | USDT or USDC | BNB (~$0.005) |
| Jupiter Prediction | Solana | Phantom, Solflare | USDC | SOL (~$0.001) |
How to install MetaMask or Rabby in 5 minutes?
- Download only from metamask.io or rabby.io (not ads).
- Create a new wallet, save seed, set extension password.
- Never share seed or connect to Telegram "support".
- For Solana separately: phantom.app or solflare.com (MetaMask does not replace it).
How to fund your wallet for bets?
Funding means sending stablecoins and gas to your wallet address on the correct chain. Exchanges charge withdrawal fees; $20-50 is fine for a first test.
| Step | Action | Details |
|---|---|---|
| 1 | Exchange or P2P | Buy USDC/USDT/BNB/SOL on an exchange or P2P, withdraw to your wallet |
| 2 | Correct network | On withdrawal pick Polygon (Polymarket), BNB Chain (Predict.fun), or Solana (Jupiter) |
| 3 | Gas token | Keep $2-5 in MATIC, BNB, or SOL for network fees |
| 4 | Bridge | If tokens sit on the wrong chain, use official Polygon or Jupiter bridges, not random sites |
Polymarket: first bet step by step
| # | Step | Details |
|---|---|---|
| 1 | Install MetaMask or Rabby | Browser extension, create wallet, store seed offline |
| 2 | Polygon network | Add Polygon PoS (chain id 137) in the wallet |
| 3 | Fund USDC + MATIC | Withdraw USDC to your Polygon address; keep $3-5 MATIC for gas |
| 4 | Connect wallet | On Polymarket click Connect Wallet |
| 5 | Deposit or trade | Deposit USDC to Polymarket or buy shares directly from wallet |
| 6 | Buy outcome | Pick a market, Yes/No, amount. Price 0.65 means ~65% implied probability |
POOL BTC risk cap: no more than 1-2% of bankroll per market (POOL BTC risk table). Cash out by selling shares or waiting for settlement.
Predict.fun: first bet step by step
| # | Step | Details |
|---|---|---|
| 1 | Same EVM wallet | MetaMask/Rabby with BNB Smart Chain (BSC) |
| 2 | Fund BNB + stable | BNB for gas, USDT or USDC on BSC ($20+ to test) |
| 3 | Open site | Predict.fun, Connect Wallet |
| 4 | Pick market | Sports, crypto, politics - filter by category |
| 5 | Place bet | Enter amount, confirm in wallet |
Platform fee about 0.02% plus BNB gas. BSC may show as BNB Smart Chain in the wallet.
Jupiter Prediction: first bet step by step
| # | Step | Details |
|---|---|---|
| 1 | Solana wallet | Install Phantom or Solflare (extension or app) |
| 2 | SOL + USDC | Send SOL for gas and SPL USDC to wallet address |
| 3 | Open Jupiter | Jupiter Prediction, Connect |
| 4 | Challenge or market | World Cup Challenge (5 picks) or single sports markets |
| 5 | Confirm | Sign in Phantom - fee is a fraction of a cent |
World Cup Challenge freeroll is free: see Jupiter Challenge guide. Paid entries charge USDC from Phantom.
Common beginner mistakes
- Withdrawing USDC on Ethereum instead of Polygon - funds stuck until bridged.
- No MATIC/BNB/SOL - transactions fail. Always keep gas.
- Signing on a phishing clone. Check URLs: polymarket.com, predict.fun, jup.ag.
- Seed in screenshots or cloud - total loss if leaked.
FAQ
Can one MetaMask cover all EVM venues?
Yes. Same address on Polygon (Polymarket) and BNB Chain (Predict.fun). Solana needs Phantom.
How much for a first test?
$30-50 USDC/USDT for the bet plus $3-5 gas token on the same chain.
MetaMask or Rabby?
Beginners often like Rabby previews. MetaMask is more common in tutorials. One wallet is enough.
How to withdraw winnings?
Sell shares on the venue or after settlement send USDC to an exchange on the same chain.
Where are all venue links?
POOL BTC Predict hub with Polymarket, Predict.fun, and Jupiter ref links.