Cross-chain · Ethereum → Polygon

Swap WBTC from Ethereum to POL on Polygon

Swap WBTC from Ethereum to POL on Polygon. A chain 137 wallet that needs gas can spend wrapped bitcoin on Ethereum and receive native POL.

WBTC at 0x2260FAC5E5542a773Aa44fBCfeDf7C193bc2C599 is an 8 decimal ERC-20 on Etherscan, not a coin on the Bitcoin chain. Native POL is marked 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE and shows up as the gas balance on Polygonscan for chain id 137. You approve the WBTC contract and pay that approval in ETH. Ethereum blocks are about 12 seconds. You do not import the POL placeholder. Switch to chain id 137 and read the native balance on Polygonscan.

Diagram for Swap WBTC from Ethereum to POL on Polygon
WBTC leaves Ethereum. POL is what can arrive on Polygon.

Chain 137 gas is the reason

Wrapped bitcoin cannot pay a Polygon fee. If the next signature has to happen on chain id 137, the wallet needs native POL. This pair turns WBTC you already hold on Ethereum into that gas coin. It is the wrong shape if you wanted USDC or USDT to arrive instead.

This never becomes a bitcoin send

A Bitcoin address will not accept WBTC, and it will not accept POL. Etherscan is where 0x2260FAC5E5542a773Aa44fBCfeDf7C193bc2C599 decreases. Polygonscan is where the native POL balance increases. How cross-chain bridges work describes that split. It is not a Bitcoin bridge.

Use the Ethereum pool when you are staying

If you want ETH, WETH, USDC, or USDT on mainnet, sell WBTC there. This route is the wrong tool for those balances. If you already hold Polygon assets and only need a little POL, swap those assets on chain 137. Bridge from Ethereum when the wrapped bitcoin is still on mainnet.

Leave POL for the next click

Chain id 137 blocks about every 2 seconds and charges POL. The coin you just received is that fee token, so it can pay a follow-up trade. Spending all of it strands any other token in the same wallet. Some wallets still label the balance MATIC.

Legal

Risk disclosure

XAUConnect is a non-custodial swap aggregator. Digital assets are volatile and may lose value rapidly. Content on this page is educational and not investment advice. Verify every contract address on the official block explorer before approving a transaction.

Frequently asked questions

What is the best way to swap WBTC from Ethereum to POL on Polygon?

WBTC at 0x2260FAC5E5542a773Aa44fBCfeDf7C193bc2C599 is an 8 decimal ERC-20 on Etherscan, not a coin on the Bitcoin chain. Native POL is marked 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE and shows up as the gas balance on Polygonscan for chain id 137.

Should I import POL by contract address?

No. Native POL uses 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE and appears as the gas balance once the wallet is on chain id 137. Importing that string creates a junk row. Confirm the increase on Polygonscan's native balance. The ERC-20 you approve is WBTC, on Etherscan.

What is WBTC if it is not bitcoin?

An ERC-20 at 0x2260FAC5E5542a773Aa44fBCfeDf7C193bc2C599, 8 decimals, on Ethereum. This route can spend that contract. It cannot move coins on the Bitcoin network. If your goal is a Bitcoin wallet, stop. If your goal is POL gas funded from that ERC-20, this is the pair.

Why is ETH still required?

Because the spend starts on chain id 1. WBTC cannot pay Ethereum gas, and the POL you will receive does not exist on Ethereum yet. Hold ETH for the approval and the send. Blocks are about 12 seconds. After arrival, POL covers chain id 137.

Live execution

Trade on XAUConnect

Open the swap page with this cross-chain route pre-selected, then connect your wallet on the source chain to quote and execute. You keep the keys.

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