Across allows users to move tokens between chains by using a decentralized network of relayers who are reimbursed on a chain of their choosing through a unified liquidity pool. Short summary A user that would like to move funds from chain A to chain B deposits funds into a "deposit box" on chain A with instructions about where they would like their funds to wind up and the fee that they are willing to pay. Relayers view these deposits and, once they have verified that the details of the deposit are correct, immediately provide funds to the user on chain B. After the relayer has performed the relay, a proof of that relay and the validity of the original deposit is submitted to the Optimistic Oracle (OO) and the relayer is reimbursed once this information has been verified by the OO.

This is the address of Across Protocol: Ethereum Spoke Pool V2 : '0x4D9079Bb4165aeb4084c526a32695dCfd2F77381'.

Users can bridge "ETH/WETH, WBTC, USDC, DAI" from ETHEREUM---> Arbitrum, Optimism, Boba, Polygan.

Users can bridge "UMA" from ETHEREUM---> Arbitrum, Optimism, Polygan.

Users can bridge "BADGER" from ETHEREUM---> Arbitrum.

Users can bridge "BOBA" from ETHEREUM---> Boba.

And this is the data about chain_id:

Mainnet: chainid:1

Arbirtum: chainid:42161

Optimism: chainid:10

Polygon: chainid:137

Boba: chainid:288

Eth had the highest number of swap between other symbols. WETH and USDC were in the second and third rank of mosr bridged symbols.

Although the highest number of bridge for ETH was on Jun 22nd, but the highest volume for it were on June 13th.

We can see the same difference for other symbols two, that the date that their highest number of bridge happened are not the same as date that highest volume happened.