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BNB Chain is building a new Layer 1 for agentic and high-frequency trading, targeting sub-50-millisecond transaction preconfirmation, no public mempool, and exchange-like execution without custodial risk. The chain will run alongside BNB Smart Chain, opBNB, and Greenfield, with testnet planned for late 2026 and mainnet in early 2027.
What's the Scoop?
- The Agentic Trading Chain: BNB Chain shared its H2 2026 technical roadmap with The Block, outlining a fourth chain designed for low-latency onchain execution. The new L1 targets more than 100,000 transactions per second and sub-one-second block finality. BNB Chain is not claiming it can beat co-located HFT on centralized exchanges; the pitch is that most users and agents can get a faster, CEX-like trading experience without handing over custody.
- No Public Mempool: TxStream routes transactions directly to the block leader instead of exposing them in a public mempool, reducing the window for sandwich attacks. Block leaders rotate every 200 milliseconds, limiting any single validator’s ability to exploit order flow.
- Unified BNB Stack: The new chain connects back to
BNB Smart Chain through a native bridge, with BSC remaining the settlement hub and BNB serving as the unified asset across the stack. - The Bigger Race: BNB Chain’s roadmap fits into a broader push to rebuild blockchain execution for automated trading. Solana’s Firedancer, Monad, and MegaETH are all attacking similar bottlenecks around speed, parallelization, and throughput.
