How to bridge collateral for market shares on Polygon

To use collateral for market shares on Polygon, move a token the market accepts onto Polygon and deposit it in the market. A bridge transfers value between networks; it does not automatically make every token usable as collateral. First check which network the market runs on and which tokens it accepts.

How does a bridge move collateral to Polygon?

A bridge coordinates a transfer between two blockchains. Depending on the bridge design, it may lock tokens on the source chain and issue a matching token on Polygon, or burn tokens on one chain and release them on the other. The Polygon version may be a wrapped representation, meaning a token that stands for value held or accounted for elsewhere.

That representation can have a different contract address from a token with the same name on another network. Read this guide to what happens when you move tokens with Polygon Bridge for more detail on the transfer. Then check the market’s deposit page: it should name the accepted token and network.

What should I check before bridging?

Confirm the market is on Polygon and that it accepts the exact token you plan to send. A familiar ticker is not enough. Two tokens can share a name while having different contract addresses and different uses.

Before you confirm, check these details:

• The source network holding your collateral and the destination network named by the market.
• The token address or approved token name shown by the market.
• The bridge’s estimated fee, transfer time and minimum amount.
• Whether the market needs you to approve the token or make a separate deposit after it arrives.

Bridging and depositing are usually separate steps. Once the token reaches your Polygon wallet, the market may require a transaction to move it into your trading balance. Keep some POL, Polygon’s native token, in the wallet for network fees. Without it, you may be unable to approve the token or complete the deposit.

When is bridging the right choice?

Bridging can help when your collateral is on another network and the market accepts its Polygon version. If the market does not accept that version, the transfer may leave you with a token you cannot deposit there. In that case, check whether the market supports another route or token before moving funds.

There is also a trade-off: a bridge adds another system and another transaction to the process. A direct deposit from Polygon is simpler if your accepted collateral is already there. After bridging, verify the token arrived in your wallet before depositing it, and check the market balance after the deposit confirms.