BNB Chain launches a new Layer-1 blockchain, aiming to launch its main network in 2027

A new blockchain is taking shape in BNB Chain\'s development pipeline, built from scratch and designed for high-frequency trading and autonomous artificial intelligence agents.

According to the team\'s technical roadmap for the second half of 2026, the project plans to launch the public test network by the end of 2026 and the main network in early 2027.

This chain will not replace the BNB Intelligent Chain (BSC), which currently has a total value of approximately US$5 billion. It will run in parallel with BSC, opBNB and Greenfield, becoming the fourth network in the BNB Chain stack. David Z, chief technology officer of BNB Chain, said the intention was to expand the entire ecosystem rather than extract activity from existing networks. BSC will serve as a clearing center and BNB (BNB) will serve as a common asset for all four chains.

Remove memory pools to narrow the attack window

The most significant structural feature of the new chain is the removal of the public memory pool. In a system called TxStream, transactions are routed directly to block leaders rather than staying in a visible queue where other participants can see and take action on pending transactions. BNB Chain said this makes sandwich attacks, a pre-emptive trading method in which attackers place orders around target transactions, impractical because transaction sequencing is completed before external parties observe it.

David Z admitted that removing the public memory pool raises a separate question: whether block leaders themselves will become the primary source of extraction or censorship. He said leaders rotate every 200 milliseconds and no single verifier can implement a sustained extraction strategy. A pre-confirmation commitment of less than 50 milliseconds makes sequencing behavior auditable after the fact, putting the pledge and reputation of improperly behaving verifiers at risk. \"TxStream will not eliminate MEVs. Nothing can be eliminated. It makes major attacks impractical by design,\"he told media.

A supporting feature called PriorityLane will reserve block space for oracle, clearing, and cross-chain bridges, with allocation decisions governed on the chain rather than left to the verifier.

The chain\'s announced performance goals are: transaction pre-confirmation time is less than 50 milliseconds, throughput exceeds 100,000 transactions per second, and block final confirmation time is less than 1 second. These are design goals for networks that have not yet entered the test net.

Compiler-level work targets execution bottlenecks

David Z believes that consensus and storage are no longer where the EVM chain lags behind. He said the execution layer is the remaining bottleneck because equally widely used contracts, such as token transfers and decentralized exchange redemptions, are run millions of times without the optimizations typical of mainstream software environments. \"Chains are getting faster in terms of consensus and storage, but the execution engine itself still works like a sentence by sentence translation,\" he said.

The team is applying just-in-time compilation (compiling code at runtime rather than pre-compiling) and strength reduction (replacing computationally expensive operations with simpler equivalent operations). David Z described the work as a bland compiler project rather than a novel architectural concept, but said it addressed the cumulative duplication inefficiencies at scale.

In the broader competitive landscape, BNB Chain is not the only one targeting execution layer performance. Solana\'s Firedancer client upgrades, Monad and MegaETH are all pursuing parallelization and throughput improvements. BNB Chain\'s roadmap also includes anti-quantum security research, including a hybrid approach that superimposes post-quantum cryptography on existing methods. The team is studying how account abstraction allows users to employ quantum security without changing their wallet addresses, although David Z said no project in the industry has a finalized quantum migration solution.

BNB Intelligent Chain recorded measurable performance improvements in the first half of 2026. The block interval dropped from 750 milliseconds to 450 milliseconds, and benchmark throughput climbed from approximately 2,800 transactions per second to approximately 5,200 transactions per second.