Vulnerability Details

Tsender contracts are expected to be deployed on Blast , a layer 2 chain known for claiming yields and gas fees. Blast redirects sequencer or gas fees to the dapps that induced them, allowing smart contract developers to have an additional source of revenue.

Since these contracts are to be used for airdropping tokens to large number of users, it can be expected that function airdropERC20 will be spending a lot of gas.

However, as per checking the contracts implementation, it is nowhere to be found to take advantage of Blast unique feature
on claiming gas fees. This can be a lost of opportunity to earn potential income from the usage of the contracts.

Impact

Missing gas revenue for the use of the contracts function.

Tools Used

Manual review

Recommendations

The contracts should implement the procedure from Blast Docs on how to properly claim gas fees.