World Chain is launching full block access lists on its mainnet, making it the “first” production layer-2 network to stream EIP-7928 data every 200 milliseconds inside flashblocks.
Key Takeaways
- World Chain is deploying streamed EIP-7928 block access lists every 200 ms for parallel checks.
- The technology targets 1 gigagas/sec throughput on World Chain without raising validator hardware costs.
- The feature goes live on World Chain Mainnet Aug. 17 via a runtime flag ahead of Ethereum’s upgrade.
Tackling the Decentralization Dilemma
World Chain says it will introduce full block access lists on Aug. 17, becoming the “first” production layer‑2 (L2) network to stream EIP‑7928 access‑list data inside every flashblock. The rollout marks a significant step in efforts to scale blockchain throughput without increasing hardware demands on independent validators.
According to a media statement, the upgrade allows validators to verify transactions in parallel while blocks are still being built, targeting a throughput of up to 1 gigagas per second without increasing hardware requirements.
World Chain’s implementation changes how validators confirm block validity. Instead of re‑executing every transaction sequentially, full block access lists provide a record of the state each transaction reads and writes. That lets independent transactions be verified simultaneously across multiple CPU cores.
The network extends the EIP‑7928 specification by streaming access‑list data every 200 milliseconds through its flashblock architecture. Validators begin verifying transactions immediately as blocks are assembled, reducing latency and distributing verification work throughout the block‑building process.
EIP‑7928 is an Ethereum upgrade proposal that introduces Block‑Level Access Lists (BALs) — a new consensus‑verified record of every account and storage slot touched during block execution. This structure makes Ethereum blocks explicitly describe all state reads and writes, enabling clients to validate and schedule execution in parallel rather than discovering dependencies on the fly.
Unlike Ethereum’s planned adoption of EIP‑7928 in the upcoming Glamsterdam upgrade, World Chain is deploying the feature via a runtime flag. Client operators can upgrade ahead of the mainnet launch without coordinating a network‑wide hard fork.
Internal tests on World Chain’s networks showed validation latency remained stable even as throughput increased sharply, reaching one gigagas per second on standard cloud infrastructure. The findings suggest that blockchain networks may scale throughput substantially without requiring a proportional increase in computing power to verify the chain.
The launch represents the first production implementation of streamed EIP‑7928 block access lists and contributes to Ethereum’s wider scaling roadmap. World Chain says the approach improves performance while preserving accessibility for independent validators — a core requirement for maintaining decentralized networks.