BNB Chain activates Pasteur hard fork to strengthen bridge security
Reported by Cointelegraph · AI-assisted summary by ChikoCorp AI News Desk

AI-generated summary based on the linked source; not independently verified. This is not investment advice. Verify market-moving details at the original publisher before acting. See our editorial policy, AI content policy, and financial disclaimer.
Summary
BNB Smart Chain (BSC) activated its Pasteur hard fork on Tuesday to enhance bridge security and increase block capacity without changing the 450-millisecond block time. The upgrade implements three BNB Evolution Proposals addressing validator verification, key rotation, slashing, governance voting, and introduces a new block submission route to fit more transactions per block.
Why it matters
The Pasteur upgrade aims to improve the security of BSC’s bridge, staking, and governance mechanisms while increasing transaction throughput by allowing builders to submit already executed blocks for validator approval. This potentially leads to fuller blocks and more efficient network operation during busy periods.
Key context
Before Pasteur, builders executed transactions before submitting a proposed block, and validators executed them again, which could result in underfilled blocks. Pasteur introduces a method where validators verify but do not re-execute blocks prior to signing, increasing throughput as demonstrated in internal QANet tests. Previous BSC upgrades steadily reduced block times from 1.5 seconds to 450 milliseconds.
Key numbers and entities
BNB Chain, BNB Smart Chain (BSC), three BNB Evolution Proposals (BEP-682, BEP-695, BEP-675). Transactions per second increased by roughly 88% in QANet testing, from 1,237 to 2,324 TPS. Average gas used per block rose from 46.35 million to 84.15 million gas units. Block time remains at 450 milliseconds.
What remains unclear
The source does not provide real mainnet transaction performance data post-upgrade or specify any changes to user experience. It also does not detail the broader market impact or user adoption implications of the Pasteur hard fork.