Key Notes
- BNB Chain is developing a separate high-performance L1 alongside BNB Smart Chain.
- The design uses BNB for gas and staking, with non-transferable govBNB representing delegated voting power.
- Public testnet and mainnet are not live, and 20ms preconfirmation is not final settlement.
BNB Chain is developing a new high-performance layer-one blockchain that would run alongside BNB Smart Chain, using the same BNB asset rather than introducing a new tradable coin. The design targets 200-millisecond blocks and early transaction acknowledgments of about 20 milliseconds for applications that need fast, predictable inclusion.
The project’s documentation, dated October 22, describes a working internal development network. Binance founder Changpeng Zhao drew attention to the plan on October 25, writing: “Multiple chains, one coins.”
View CZ’s comment on BNB Chain’s new L1
— CZ (@cz_binance) October 25, 2026
One BNB Asset Across Two Networks
BNB Smart Chain, or BSC, would remain the ecosystem’s general-purpose network. The new L1 is a separate design for demanding workloads such as high-frequency trading, real-time payments, confidential finance and AI-agent activity. It is not a replacement that requires the existing BSC ecosystem to move.
BNB would pay gas on the new chain through a native bridge from BSC that is still under development. The governance design also uses staked BNB: staking creates govBNB one-for-one, with voting power activated through delegation.
govBNB is a non-transferable voting record, not a separately tradable cryptocurrency. That distinction explains how the design can include a governance token representation while keeping BNB as its economic asset.
Why 20ms Does Not Mean Final Settlement
The published performance figures describe different stages of a transaction. A 200ms block interval concerns block production. The roughly 20ms preconfirmation is a validator-signed indication that a transaction will be included and ordered.
The project’s preconfirmation guide calls that early signal best-effort: it can be revoked and does not establish that execution succeeded.
The proposed consensus separates agreement on transaction order from execution. Its enhanced Parlia mechanism uses BLS votes to target order finality within a second. Execution becomes final only after a later block records the execution result and that block itself finalizes.
A bridge releasing assets, or another application taking an irreversible action, must therefore wait for execution finality and verify the receipt. The figures are development parameters and targets, not independently measured performance on a public production network.
Reserved Capacity for Time-Sensitive Transactions
The Multi-Lane system reserves gas capacity for registered contracts. Its purpose is to keep designated traffic from being crowded out when other applications become busy, with allocations controlled through governance. This reserves capacity rather than guaranteeing that every individual transaction will be included.
The architecture also routes transactions directly to the current and next block producer instead of a global mempool. Parallel EVM execution is separated from ordering, so consensus does not have to wait for each transaction to finish running.
Existing Solidity contracts are intended to work without changes at the execution layer. Infrastructure still needs to account for differences: the network specification says fees are charged on the declared gas limit rather than gas actually used, while the project’s FAQ identifies unsupported Ethereum transaction types and RPC features.
A Devnet Today, With Public Launches Still Ahead
The current network has multiple validators producing blocks internally. Its public name remains undecided, and the network-information page lists no public RPC endpoint, finalized chain ID, faucet or hosted block explorer.
This development follows an earlier roadmap, published July 8, which targeted a testnet by the end of 2026 and mainnet in early 2027. Those remain planning targets rather than confirmed launch dates; the current manual still identifies the project as devnet-stage.
AI agents are one intended user group, alongside trading and payments applications. CoinScreamer’s earlier coverage examined BNB Chain’s agent-development toolkit. That software initiative is separate from deploying this new base-layer network.
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