Fourier Upgrade of opBNB

Hardfork

Upgrade Timeline

The Fourier upgrade will happen at:

• Testnet: Nov-06-2025 03:00:00 AM +UTC
• Mainnet: Jan-07-2026 03:00:00 AM +UTC

Upgrade opBNB op-node to v0.5.5 and op-geth to v0.5.9 Before Hardfork

Releases:

• https://github.com/bnb-chain/opbnb/releases/tag/v0.5.4
• https://github.com/bnb-chain/op-geth/releases/tag/v0.5.8

Docker Images

• ghcr.io/bnb-chain/op-node:v0.5.5
• ghcr.io/bnb-chain/op-geth:v0.5.9
• ghcr.io/bnb-chain/op-batcher:v0.5.5
• ghcr.io/bnb-chain/op-proposer:v0.5.5

Key Highlight: Shorten Block Interval

• PR#305: effectively reducing the block time from 500 milliseconds to an impressive 250 milliseconds.