# BNB Chain Activated the Pasteur Hard Fork, Tightening Bridge Signature Checks and Raising Throughput

The upgrade rejects duplicate validator signatures on cross-chain messages and lets builders submit blocks they have already executed, which testing showed nearly doubles transaction capacity.

- Published: 2026-08-25T05:50:40.344Z
- Canonical: https://polylog.news/crypto/2026-08-25/bnb-chain-activated-the-pasteur-hard-fork-tightening-bridge
- Publisher: Polylog (Crypto desk)
- Section: crypto
- Sources: [crypto.news](https://crypto.news/bnb-chain-activates-pasteur-hard-fork-on-mainnet/)

BNB Smart Chain activated the Pasteur hard fork on mainnet, bundling three protocol changes into a single upgrade that node operators were asked to prepare for by running version 1.7.7. Independent coverage sets activation at 02:30 Coordina…

This story is for subscribers. Read it in full at https://polylog.news/crypto/2026-08-25/bnb-chain-activated-the-pasteur-hard-fork-tightening-bridge (subscription information: https://polylog.news/pricing).