Verifying balances on-chain

Everything you trade on 4rho is on-chain — meaning anyone with a block explorer can verify it. Here's how to audit your own activity from outside the app.

The contracts

These are the live addresses 4rho's smart contracts use. Bookmark them or paste them into Polygonscan to read the contract state directly.

• Exchange — settles trades and holds your USDC collateral.
• Market factory — creates and resolves markets.
• Conditional tokens (CTF) — the ERC-1155 contract that holds the outcome tokens you own (one token type per market outcome).
• USDC — the collateral token. Same contract as everywhere else on Polygon.

Checking your USDC balance

Paste your address into Polygonscan's "Token Holders" view on the USDC contract, or call balanceOf(your_address) directly. Your free USDC balance is what you can withdraw immediately. Funds locked in open orders show in 4rho's portfolio view as "in open orders".

Checking your outcome tokens

Outcome tokens are ERC-1155 tokens minted by the CTF contract. Each outcome of each market has a unique token ID. The Portfolio page lists your positions; if you want to verify them on-chain, look up the positions on the CTF contract using your address as the holder.

Checking trade history

Every fill is an on-chain event from the Exchange contract. Filter the Exchange contract's events on Polygonscan by your address to see the full history.

Why this matters

Non-custodial means more than a marketing word — it means you can verify everything yourself, without trusting 4rho's UI. If our app were unavailable for any reason, your funds would still be on-chain, your positions would still be valid, and you could redeem winning positions directly through the contract once a market resolved.