Cross-chain · Solana → Polygon

Swap USDT from Solana to WETH on Polygon

Swap USDT from Solana to WETH on Polygon. Tether's SPL mint leaves Solana, and Polygon WETH is what can arrive. You receive wrapped ether, not POL.

The mint is Es9vMFrzaCERmJfrF4H2FYD4KCoNkY11McCe8BenwNYB. Phantom and Solscan handle it with no ERC-20 approval. WETH is 0x7ceB23fD6bC0adD59E62ac25578270cFf1b9f619 on chain id 137. Polygonscan is the check. POL is 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE and is not included. Mainnet WETH is 0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2 on chain id 1, about 12 second blocks, Etherscan. WBTC is a different wrapper and is not native bitcoin.

Diagram for Swap USDT from Solana to WETH on Polygon
USDT leaves Solana. WETH is what can arrive on Polygon.

The wrapper and the fee are a pair of balances

After this hop you can hold 0x7ceB23fD6bC0adD59E62ac25578270cFf1b9f619 and still fail the deposit, because chain id 137 bills POL. If gas was the shortage, buy POL and skip this page. If the contract names this WETH, you are in the right place and you still bring POL. Ethereum's WETH will not be accepted by that Polygon function. A copied mainnet address is a zero balance, not a shortcut.

Tether's mint does not approve itself on Solana

There is no ERC-20 allowance in Phantom. Native SOL pays the signature. MetaMask stays blind until the asset is the Polygon ERC-20 and the network is 137. How cross-chain bridges work is the handoff. Solscan confirming a debit is not Polygonscan confirming a credit. Wait. A second send sells more Tether.

Other WETH contracts are other chains

Arbitrum uses 0x82aF49447D8a07e3bd95BD0d56f35241523fBab1. Base uses the predeploy 0x4200000000000000000000000000000000000006. None of those balances update because Polygon did. If your liquidity is on those networks, this route is the wrong inventory. Etherscan's 12 second blocks describe mainnet, not this hop and not chain id 137.

A stablecoin route is quieter when you did not want ether

USDT to USDC on Polygon keeps a dollar, with the warning that native USDC is not USDC.e. This page sells the dollar for WETH. Take it when you will hold the wrapper. The minimum WETH is the floor. POL still has to be in the wallet afterward, so a perfect WETH amount with zero POL is not a finished setup.

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 Solana to WETH on Polygon?

The mint is Es9vMFrzaCERmJfrF4H2FYD4KCoNkY11McCe8BenwNYB. Phantom and Solscan handle it with no ERC-20 approval.

Does this WETH pay Polygon gas?

No. 0x7ceB23fD6bC0adD59E62ac25578270cFf1b9f619 cannot pay fees. POL, sentinel 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE, pays them on chain id 137. Tether's mint left Solana. Check Polygonscan and hold POL before you move WETH. If fees were the only gap, this route is wrong. A block interval is not a delivery time for the bridge.

Is Polygon WETH the same as Ethereum WETH?

No. Ethereum's contract is 0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2 on chain id 1, Etherscan, about 12 second blocks. This route delivers the Polygon address only. Base and Arbitrum are different again. If the pool is not on chain id 137, do not bridge the Solana mint here. Switch the wallet to the destination chain before you judge the balance.

Is there an approval on the Solana USDT?

No. Es9vMFrzaCERmJfrF4H2FYD4KCoNkY11McCe8BenwNYB is an SPL mint. Phantom signs it, Solscan records it, and there is nothing to revoke. Keep native SOL for the fee. The receiving wallet is an EVM account on Polygon, and it needs POL before the WETH can move. Do not send a second time while the first transfer is still open.

Live execution

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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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