Overview
- BNB Chain flipped Pasteur live on BSC mainnet at 02:30 UTC on August 25, 2026, and the network reported no major disruptions immediately after activation.
- Pasteur bundles three proposals—BEP-682, BEP-695 and BEP-675—that now reject duplicate validator entries in cross-chain light-block checks, remove old operator key authority after key rotation, and let builders submit pre-executed blocks to reduce duplicate execution.
- Node operators were required to install client version 1.7.7 and remove the deprecated EnableBAL config before the fork because leaving that field would prevent the updated client from starting.
- Controlled QANet tests showed throughput rising from about 1,237 to 2,324 transactions per second, but BNB Chain says those controlled results must be validated by live mainnet metrics such as block utilization, transaction throughput and missed-block rates.
- By tightening bridge checks and fixing key-rotation and governance loopholes, Pasteur aims to cut cross-chain risk and make fuller use of existing 450-millisecond blocks and the 100-million gas limit, and the ecosystem will watch whether builders adopt the new block route and whether that drives sustained capacity gains.