BNB Chain builds new Layer 1 for AI trading agents, targets 2027 mainnet

BNB Chain disclosed today that it is already setting up the stack for the projected boom in on-chain agentic activity as it announced the ongoing development of a separate Layer 1 blockchain tuned for autonomous trading agents.

The Binance-linked blockchain network said that the testnet is expected to become public by late 2026, with mainnet to launch in early 2027, according to its H2 2026 technical roadmap.

BNB Chain, which already has BNB Smart Chain (BSC), opBNB, and Greenfield, is pitching the fourth chain in its stack as the solution for workloads its older chain was not designed for, rather than a replacement for the existing $8.4 billion DeFi ecosystem on BSC, per DeFiLlama data.

Splitting BSC’s liquidity across the new chain is a real possibility that the technical team is planning to get ahead of. The plan, according to the project’s CTO, is to connect the new chain to BSC through an official native bridge. That setup maintains BNB as the shared asset across all four everys in its stack, and BSC will remain the settlement hub.

What are the performance targets for BNB Chain’s new agent network?

Even though the chain has not yet reached testnet, BNB Chain is already setting lofty performance benchmarks:

• Over 100,000 transactions per second.
• Block finality under one second.
• Transaction preconfirmation in under 50 milliseconds.

The project is depending on co-optimized consensus, parallel execution, and LtHash-based storage to hit the throughput targets mentioned in the official blog.

BNB Chain stopped short of comparing its new network to the speed on centralized exchanges, where microsecond settlement is routine. However, they argued that the sub-50-millisecond preconfirmation lines up in the range of what users expect of exchanges.

What do TxStream and PriorityLane do on BNB Chain’s agent network?

Two other features mentioned in the trading pitch were TxStream and PriorityLane.

BNB Chain chief technology officer David Z described to The Block that TxStream closes the window that attackers exploit to launch sandwich attacks, because trade ordering is locked before anyone learns a trade exists. “TxStream doesn’t eliminate MEV. Nothing does. It makes the dominant attacks impractical by design,” Z said.

TxStream removes the public mempool and routes transactions straight to the block leader.

Z also said that errant validators could lose their stake and reputation once ordering becomes publicly auditable.

PriorityLane, on the other hand, reserves block space for high-priority, time-sensitive traffic such as oracles, liquidations, and bridges.

Agentic commerce remains hot despite takeoff delay

BNB Chain’s new chain announcement is the latest product from the agent tooling assembly line. Earlier this month, on July 1, the project launched BNB Agent Studio to allow developers to deploy on-chain AI agents in about 15 minutes, building on the BNBAgent SDK, which went live on BSC mainnet on May 18, 2026.

BNB Chain is not alone in lining up the stack for autonomous agents to interact. Mastercard rolled out Agent Pay for Machines on June 10, 2026, a platform for autonomous machine-to-machine payments backed by more than 30 companies, including Coinbase, OKX, and Polygon.

Coinbase, separately, opened Agentic.market on its x402 protocol, a storefront where agents find and pay for web services using stablecoins without API keys.

Solana’s Firedancer, Monad, and MegaETH are among many teams looking to eliminate the execution-layer bottleneck. However, BNB Chain is pointing to cutting BSC block intervals to 450 milliseconds and almost doubling benchmark throughput to about 5,200 transactions per second in H1 as evidence that it can ship.

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