Moving Funds to a Prediction Market Chain

To move funds to a prediction market, match the venue’s deposit route to the asset and network you are sending from. Polymarket, for example, uses USDC.e on Polygon as trading collateral and accepts supported assets through its deposit system.

The route determines where a deposit lands and which token is available to trade.

Which chain and token should you send?

Use the chain and token shown in the venue’s deposit flow, because a token’s name alone does not identify the network it is on. Polymarket’s help center instructs users to select a deposit method, token and chain, then copy the address displayed for that selection; it says deposit addresses can differ by network.

For a direct Polygon transfer, the source wallet must hold an asset supported by that deposit route, and the sender must select Polygon when initiating the transfer. If the source funds are on another supported chain, Polymarket’s bridge flow routes them across chains and converts them to USDC.e on Polygon. The bridge documentation lists EVM, Solana, Bitcoin and Tron address types, but its supported assets can change, so check the current list in the deposit interface before sending.

If funds are already on Polygon but need a swap before they can be deposited, choosing a Quickswap route from your wallet explains how to select a route for that separate conversion. Confirm the resulting token and network against the market’s deposit options before transferring.

How does a cross-chain deposit reach the market?

A cross-chain deposit starts by generating or copying the venue’s address for the source network, then sending the supported asset there. Polymarket’s documented flow detects the source-chain transfer, bridges the asset and swaps it into USDC.e on Polygon; the destination balance appears after processing completes. This means the sending address is a route endpoint, not necessarily the address used for trading on Polygon.

Before confirming a transfer, check these details together:

• The selected source chain matches the network holding the funds.
• The token contract or asset matches the supported-asset list.
• The copied address belongs to the intended account and deposit route.
• The amount meets any minimum shown for that route.

Keep enough of the source chain’s gas token in the wallet for the transfer. A low fee estimate does not make a mismatched network safe: on-chain transfers generally cannot be reversed by the sender once confirmed.

How can you verify the deposit before trading?

Verify the source transaction first, then check the destination balance in the same account used to create the deposit route. Polymarket’s help center says the balance updates after confirmation and advises refreshing the page; its bridge documentation also provides deposit status tracking for routed transfers.

If the transfer is not reflected, compare the transaction’s network, token and destination address with the deposit details, then check the route status before sending again. A second transfer will not repair a first transfer sent to the wrong network. For most users, the simpler choice is the venue’s in-app deposit route: it keeps token selection, network selection and the destination address in one flow, while a self-managed bridge or swap adds another transaction and another point to verify.