Cross-chain · Ethereum → Avalanche C-Chain

Swap USDT from Ethereum to USDC on Avalanche C-Chain

Swap USDT from Ethereum to USDC on Avalanche C-Chain. Wallets that need Circle's native USDC on the C-Chain spend Ethereum Tether and receive that dollar.

You send Tether at 0xdAC17F958D2ee523a2206206994597C13D831ec7 on Etherscan, 6 decimals. You receive 0xB97EF9Ef8734C71904D8002F8b6Bc66Dd9c48a6E on Snowtrace, Circle's native USDC on Avalanche C-Chain, chain id 43114. The older bridged USDC.e at 0xA7D7079b0FEaD91F3e65f86E8915Cb59c1a4C664 is a different contract and is not this output. The X-Chain and the P-Chain are the wrong networks. Gas to leave is ETH on Ethereum, about 12 seconds a block. Gas on the C-Chain is AVAX. The USDC cannot pay it. Import the native contract from Snowtrace before you deposit. Import native USDC from Snowtrace on chain id 43114. USDC.e will not move, and the X-Chain will not show the dollars at all. Confirm the native contract on Snowtrace before you deposit the dollars anywhere.

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

Native USDC is not USDC.e

C-Chain apps split the dollar. Circle's native token is 0xB97EF9Ef8734C71904D8002F8b6Bc66Dd9c48a6E. Bridged USDC.e is 0xA7D7079b0FEaD91F3e65f86E8915Cb59c1a4C664. This route pays the native contract. If an allowlist prints the USDC.e address, these dollars will not credit. Read it on Snowtrace.

Tether is what leaves Ethereum

Approve 0xdAC17F958D2ee523a2206206994597C13D831ec7 only. That approval burns ETH on chain id 1. Circle USDC on Ethereum, 0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48, is not the token you send and not the token you receive.

Stay on Ethereum to flip the stable

This route is the wrong tool when both dollars should remain on mainnet. USDT and Circle USDC already have a chain id 1 book. Bridge when the receiving contract is native USDC on the C-Chain. Avalanche in this pair means chain id 43114, where AVAX pays the fee.

AVAX after the dollar arrives

The received USDC cannot pay gas. The C-Chain charges AVAX. Keep some on the destination wallet or the new dollars wait. An X-Chain address will not display this ERC-20.

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 USDT from Ethereum to USDC on Avalanche C-Chain?

You send Tether at 0xdAC17F958D2ee523a2206206994597C13D831ec7 on Etherscan, 6 decimals. You receive 0xB97EF9Ef8734C71904D8002F8b6Bc66Dd9c48a6E on Snowtrace, Circle's native USDC on Avalanche C-Chain, chain id 43114.

Which USDC address should I watch on Avalanche?

0xB97EF9Ef8734C71904D8002F8b6Bc66Dd9c48a6E on Snowtrace. That is Circle's native USDC on the C-Chain. USDC.e at 0xA7D7079b0FEaD91F3e65f86E8915Cb59c1a4C664 will not increase because of this route. Chain id 43114 is the network. The X-Chain will not show either contract. Confirm the full address on the explorer before you send it onward.

What do I approve on Ethereum?

Tether at 0xdAC17F958D2ee523a2206206994597C13D831ec7 on Etherscan. Keep ETH in that wallet for gas on chain id 1. USDT cannot pay the fee, and the approval may be its own transaction. Blocks are about 12 seconds. The USDC appears only after you switch the wallet to the C-Chain.

Is this the same as USDT to USDC on Ethereum?

The tickers match and the contracts do not. On Ethereum the USDC would be 0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48. This route delivers 0xB97EF9Ef8734C71904D8002F8b6Bc66Dd9c48a6E. Use the mainnet pool when the dollars should stay on chain id 1. Use this page when the C-Chain is where the USDC has to sit.

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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