[DigitalToday reporter Chi-gyu Hwang] World Chain, an Ethereum layer-2 network co-founded by Sam Altman (샘 알트먼), said it will become the first commercial layer-2 blockchain to stream the full EIP-7928 Block Access Lists within Flashblocks. The feature will be introduced on its mainnet on Aug. 17.

Flashblocks was developed by expanding Flashbots' Rollup Boost technology for the OP Stack and supports faster blockchain speeds.

Typically, a blockchain reveals a block to the network only after the entire block is completed. OP Stack-based layer-2s such as Optimism, Base and World Chain usually take 2 seconds to build a block, leaving users unable to know whether their transactions are being processed during that time. Flashblocks splits what has been built so far and releases it in advance about every 200 milliseconds, instead of waiting 2 seconds.

According to a recent report by The Block, the upgrade aims to let validators perform parallel validation while a block is being built, supporting throughput of up to 1 gigagas per second without more powerful hardware.

Previously, validators had to re-execute every transaction in a block one by one to verify validity. Full Block Access Lists record in advance what data each transaction read and wrote, allowing unrelated transactions to be validated simultaneously across multiple CPU cores.

EIP-7928 is an Ethereum improvement proposal to add Block-Level Access Lists, or BAL, which would require recording all accounts and storage slots accessed during block execution and state differences after execution. It focuses on speeding up block validation.

Proposed in March 2025, BAL is expected to be included in Ethereum's Glamsterdam hard fork update in the second half of the year.

Optimism-based World Chain plans to take BAL a step further by sequentially streaming data every 200 milliseconds using the Flashblocks architecture.

World is not the first EVM chain to test BAL. Binance sidechain BNB Chain introduced BAL through BEP-592 and achieved measurable improvements in CPU usage, throughput and block processing speed, the BNB development team said.