According to reports from Wu, Ethereum developer @nero_eth discusses delayed execution (EIP-7886) and the free DA issue. Delayed execution alters the validation process, allowing validators to verify the validity of blocks through pre-checks before transaction execution.
If a transaction fails due to insufficient balance, the data has been written to the block but no fees have 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 validation, pre-validation, and pre-charging, ensuring that data writing incurs costs through pre-deducted fees, block reorganization, or state rollback to prevent network congestion and economic injustice.
