BNB Chain activated its Jenner hard fork on the BSC testnet early on October 29, 2026, and the change drawing attention is a reserved slice of every block set aside for payments. Cointelegraph reported the testnet activation, and the upgrade's own release notes schedule it for 02:30 UTC. The feature is live for testing now, not on the main network yet.
A protected lane for payments on BSC
The core change is BEP-703, which the project calls Payment Lane. It reserves 5% of each block's gas capacity by default for qualifying payment transactions, and governance can raise that share to a protocol maximum of 10%. The reservation is strict. If payment traffic does not fill its 5% allocation in a given block, the unused space stays empty rather than being handed to other transactions.
That is a deliberate trade. BNB Chain is protecting payment throughput during congestion at the cost of some wasted block space when payments are quiet. The point is predictability. On a general-purpose chain, a payment competes for block space with everything else: token launches, NFT mints, arbitrage bots. When demand spikes, fees climb and simple transfers get crowded out. A reserved lane means a payment can clear even when the rest of the block is full.
Native transfers qualify first, stablecoins wait on governance
There is a limit worth reading closely. Two kinds of transactions qualify for the lane: nonzero BNB transfers sent to accounts without contract code, meaning ordinary wallets, and transactions aimed at governance-listed payment contracts. The contract list starts empty. Stablecoins and the new CAS20 assets are not automatically eligible. Each has to be voted onto the list before it gets the protected lane.
At launch, then, the feature mainly helps native BNB sent wallet to wallet. The stablecoin case, which is where most real payment volume on BSC actually sits, depends on later governance action. Readers should treat the stablecoin benefit as pending rather than shipped.
Millisecond timestamps and the CAS20 asset standard
Jenner ships two other changes alongside the payment lane. BEP-706 adds a precompile that returns the executing block's timestamp in milliseconds, while the existing block.timestamp value stays in seconds. Finer timing granularity matters for settlement logic that needs to order events inside a single block.
BEP-702 introduces CAS20, a protocol-native standard for assets such as stablecoins and tokenized real-world assets. Token creation and policy-registry updates under CAS20 require separate activation, so the standard is capability today and usage later. Taken together, the three proposals point at the same destination: a chain tuned for moving money and compliant assets, not only for trading.
Payment rails that settle onchain
For anyone spending stablecoins, the relevance is indirect but real. The apps behind stablecoin spending increasingly settle value onchain, and BSC is one of the cheaper high-volume networks they lean on. A protected payment lane, once stablecoins are listed by governance, would make those settlements less sensitive to network congestion. It also hints at how crypto cards that top up or settle on BSC might behave during busy periods, when a reserved lane keeps a transfer from stalling behind speculative traffic.
BNB Chain grew out of the Binance ecosystem, and the design signals where it wants volume next: everyday transfers, not just order flow. BNB traded at $746.23 as of October 29, 2026, up 0.2% over 24 hours, roughly flat while the rest of the majors slipped, with Bitcoin down 1.4% and Ether down 2.1% on the day.
Overview
The Jenner hard fork is live on the BSC testnet as of October 29, 2026. Its headline feature, Payment Lane, reserves 5% of each block's gas for payment transactions and can be raised to 10% by governance, with unused capacity left idle rather than reassigned. At launch only native BNB transfers to ordinary wallets qualify; stablecoins and CAS20 assets must be voted onto the eligible-contract list first. The upgrade also adds millisecond block timestamps and the CAS20 asset standard. Mainnet timing is to be announced separately. The practical payoff for stablecoin payments and onchain card settlement is prospective, dependent on governance listing the contracts that carry real volume.
