BNB Chain's New L1 Spec Targets 200-Millisecond Blocks With One Shared Token

200ms Blocks, 20ms Pre-Confirmation

A technical specification added to BNB Chain's official documentation on October 22 sets out a new Layer 1 blockchain designed to run alongside BNB Smart Chain rather than replace it. The new L1 overview describes a separate EVM-compatible network for applications that need faster transaction processing and predictable execution. Block production is targeted every 200 milliseconds, with transaction pre-confirmation in roughly 20 milliseconds, although the document states these are development goals rather than measured live performance. An enhanced Parlia consensus mechanism uses BLS voting to reach transaction-order finality in under one second, but the specification draws a sharp line between pre-confirmation and settlement: a pre-confirmation can still be revoked, so applications moving irreversible funds must wait for execution finality. Execution is separated from block ordering, which lets each blockchain node in the validator set keep agreeing on blocks without waiting for every transaction to finish processing. A Multi-Lane mechanism reserves capacity for specific transaction classes such as high-frequency trading, decentralized order books and PayFi payment flows. Developers retain Solidity compatibility, although certain Ethereum RPC methods and transaction types will not be supported. Native account abstraction covers sponsored fees and batched operations, while an optional privacy layer built on a shielded pool still requires security audits and trusted-setup work; the documentation warns it should not yet be used with real funds. An internal multi-validator development network is already producing blocks with end-to-end finality. BNB price traded near $740 at the time of writing, up more than 2% over the past seven days.

One Token Across Two Chains

The defining choice is what the new chain does not launch: its own token. BNB stays the principal asset across both networks, covering gas fees, staking and governance. Users will move BNB from BSC to the new chain over a native bridge that remains under construction, and staked tokens will mint govBNB at a one-to-one ratio, a non-transferable governance token carrying voting rights only. Binance co-founder Changpeng Zhao, known as CZ, condensed the arrangement into a short phrase, “Multiple chains, one coins,” when responding to discussion of the plan. The project carries only a working label, New L1, and has no official name; the schedule calls for a public testnet at the end of 2026 and a mainnet launch in early 2027, with neither date fixed. The push comes as activity on the existing chain concentrates in tokenized finance: the network processed roughly $25.6 billion in tokenized stock transactions during the third quarter, held about $1.13 billion in tokenized equity supply with around 1.8 million holders, and grew network revenue 54% to $54.2 million. Performance work on BSC itself is also underway, and the August 25 Pasteur hard fork restructured block building while strengthening validator authorization and bridge verification, with controlled tests showing throughput rising from 1,237 to 2,324 transactions per second. Supply-side pressure continues in parallel through the BNB Foundation’s 37th quarterly auto-burn.

The Bridge Question Before 2027

Our reading is that two questions decide whether the plan matters for BNB holders. The first is demand: a second chain running the same asset extends its utility, but the specification itself stops short of promising that network activity or token demand will rise, and BNB must now compete for attention across two networks. The second is the bridge, the one component the documentation admits is unfinished, and recent history on BNB Smart Chain shows how fast cross-chain bridges can fail; a halt after 10 million CYS was minted is a recent reminder. The public testnet due at the end of 2026 is the first external checkpoint, and until it ships, the 200-millisecond block target is a design goal, not a demonstrated result.