According to reports by Wu, Ethereum developer @nero_eth discusses delayed execution (EIP-7886) and the free DA issue. Delayed execution alters the validation process, allowing validators to pre-check the validity of blocks before transaction execution through pre-inspection.
If a transaction fails due to insufficient balance, the data has been written to the block but the fees have not been paid, leading to the Free DA issue. Invalid transactions occupy on-chain resources, and validators are not compensated.
The article proposes solutions such as optimistic certification, pre-validation, and pre-charging, ensuring that data writing incurs costs through pre-deduction of fees, block reorganization, or state rollback, to prevent network congestion and economic injustice.
