Cross-chain · Polygon → Avalanche C-Chain

Swap USDC from Polygon to AVAX on Avalanche C-Chain

Swap USDC from Polygon to AVAX on Avalanche C-Chain. Circle USDC leaves Polygon. Native AVAX is what can arrive on the C-Chain. That AVAX can pay gas, and it is not WAVAX and not an X-Chain balance.

Spend 0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359. Receive 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE, which on chain id 43114 means AVAX, not a token you approve. Polygonscan shows USDC. Snowtrace shows AVAX. How cross-chain bridges work is why the gas label is not one coin across chains.

Diagram for Swap USDC from Polygon to AVAX on Avalanche C-Chain
USDC leaves Polygon. AVAX is what can arrive on Avalanche C-Chain.

WAVAX is the other output

0xB31f66AA3C1e785363F0875A1B74E27b85FD66c7 is the wrapped ERC-20. This quote buys native AVAX, which can pay fees. If a pool asked for WAVAX, this route is wrong. There is nothing to approve on the gas label.

Not the X-Chain

C-Chain is chain id 43114. X-Chain addresses will not show this credit. Snowtrace is the C-Chain explorer. If someone told you to use an X-Chain wallet, stop.

Native USDC plus POL, not USDC.e

Native USDC is the sell. USDC.e will not fill it. POL pays chain id 137. About 2 second blocks are not the bridge. Leave POL even though the destination coin is also gas.

Circle's peg stops at AVAX

USDC is Circle's dollar token. AVAX moves. Accept the minimum or refresh the quote. No finish time is given. Etherscan is the wrong explorer.

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 USDC from Polygon to AVAX on Avalanche C-Chain?

Spend 0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359. Receive 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE, which on chain id 43114 means AVAX, not a token you approve.

Is the destination WAVAX?

No. WAVAX is 0xB31f66AA3C1e785363F0875A1B74E27b85FD66c7. This route pays native AVAX, marked 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE on chain id 43114. Snowtrace should show a native credit, not a token transfer. You sold Circle USDC at 0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359, not USDC.e. The X-Chain will not list it. C-Chain Snowtrace is the only place that credit belongs.

Do I approve 0xEeee on Avalanche?

No. That string is the native gas label for AVAX on the C-Chain. There is no contract to approve. If a wallet asks for an allowance, you left this route. Polygonscan shows the USDC debit. Snowtrace shows the AVAX credit. Keep POL on Polygon for the send.

Can I start from USDC.e?

Not on this page. USDC.e is 0x2791Bca1f2de4661ED88A30C99A7a9449Aa84174. The quote names native Circle USDC. You also need POL on chain id 137. An X-Chain receive address is the wrong network. C-Chain only, chain id 43114. Do not paste an X-Chain address and expect this AVAX credit to show up.

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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