BNB Chain H2 2026 Tech Roadmap: Doubling Down on Speed

  TL;DR

• In H1 2026, BSC cut block intervals to 450 ms, brought in-memory finality down to 650 ms, and nearly doubled benchmark throughput to ~5,200 TPS
• The H2 objective is to double mainnet throughput again, on a stated path toward a 10x improvement across BNB Chain
• A next-generation L1 architecture is in development on a design path toward the 1M TPS end-of-life goal

Six months ago, BNB Chain set three priorities for BSC: speed, throughput, and protocol stability. This roadmap opens with the receipts and closes with what comes next - a second half focused on doubling performance again, and an architecture designed for the decade ahead.

What Changed in Six Months

The clearest way to read H1 is through what a transaction experiences on BSC today versus January:

Alongside speed, the network became steadier: following the Osaka/Mendel hard fork, re-org occurrence on BSC mainnet was significantly reduced.

The Engineering Behind the Numbers

None of these gains came from a single change. Four features carried most of the load:

• Block-Level Access List (BAL): Pre-declares state access patterns to improve execution efficiency and support future parallel processing.
• Incremental Snapshot: Enables faster chain synchronization for lagging or new nodes.
• EVM SuperInstruction: Decreases interpreter overhead by fusing common opcode sequences, directly driving throughput.
• Extended Voting Rules: Enhances the fast finality mechanism to ensure consistency under adverse network conditions.

The BSC Rust client also reached a milestone: full Reth v2.0 compatibility, including Sparse Trie Cache, Proof V2, and RocksDB support, delivering a 2x performance improvement. 

From Protocol to Product: Middleware Delivered

H1 wasn't only about the base layer. Middleware shipped to reduce complexity for advanced business scenarios:

• Agentic AI Strategy: Developed and launched the BNB Agent Studio and BNB Agent SDK, integrating tools like AWS Bedrock AgentCore and LLM gateways to enable autonomous on-chain agent deployment.
• Payment Infrastructure: Advanced the Middleware Payment Protocol (MPP) SDK, focusing on end-to-end integration and partner implementation efforts.
• Institutional Privacy: Researched and drafted frameworks for institutional-grade privacy.

The Second Half: Three Commitments

1. Double the throughput. The immediate objective is a 2x throughput increase on BSC mainnet, scaling toward a long-term 10x improvement for BNB Chain. 
2. Isolate the noise. Advanced resource isolation will minimize cross-application interference, so one application's demand spike doesn't degrade another's performance.
3. Lower the barrier. Gas fee structures will be refined to reduce entry costs for both Web2 and Web3 enterprises, a prerequisite for mass adoption.

Delivering It: The BSC Pipeline

The commitments above map to concrete workstreams already in motion:

• Capacity. BEP-675 will be implemented alongside further performance tuning to boost network capacity. Builder processing efficiency will be strengthened through BAL integration and EVM execution refinements.
• Congestion resistance. Dedicated lane solutions will keep the network operating consistently through peak activity. FOCIL-inspired technology will bolster transaction inclusion guarantees, and BAL-based parallel execution will decrease block import latency.
• Precision pricing. Rather than applying global fee changes, versatile gas fee adjustments will target specific industry verticals.

We're also building for the next wave of institutions arriving onchain. That means making the infrastructure flexible enough to meet their requirements, exploring new token standards that make it easier to issue and move stablecoins, and developing privacy frameworks that work with different compliance and regulatory needs.

At the same time, AI-driven security will make the network safer, and teams building RWAs, stablecoins, and DeFi projects will get hands-on technical support and ready-made middleware.

Designed for the Decade: A New L1 Takes Shape

Beyond the existing stack, BNB Chain is developing a next-generation L1 architecture built to support different use cases than the existing ones:

• High Performance: 100K+ TPS through co-optimized consensus, parallel execution, and LtHash-based storage
• Ultra-Low Latency: Sub-50ms transaction preconfirmation and sub-1-second block finality
• TxStream: No public mempool. Transactions stream directly to the block leader, cutting latency and blocking front-running by design
• PriorityLane: Reserved block space for mission-critical traffic (oracles, liquidations, bridges), governed on-chain
• Native Privacy: Protocol-level confidential transactions with selective disclosure for compliance
• Account Abstraction Suite: Gas sponsorship, GasToken, transaction batching, scheduled execution, passkey signing, and access key control. The goal is to achieve Web2-grade UX, natively
• BNB Powered: Extends BNB's utility into trading, payment, privacy, and AI scenarios while staying interoperable with the BNB Chain ecosystem

We plan to ship it on testnet by the end of 2026, with mainnet release following in early 2027. More updates to come soon.

Post-Quantum Readiness

Throughout H2 2026, BNB Chain will keep testing methods, evaluating solutions, and deepening its research into quantum-resistant security across the protocol stack.

Two principles guide this work. First, protect early: attackers can record encrypted data today and decrypt it years from now once quantum computers catch up. We're testing a hybrid approach that layers quantum-resistant protection on top of today's cryptography, rather than swapping it in abruptly. Second, make the upgrade seamless: we're researching how account abstraction can let users adopt quantum-safe security without changing their existing addresses or breaking anything they've already built.

There's no finish line here. Quantum computing will keep evolving, and so will our testing and research. The point is that when it matures, BNB Chain's infrastructure is already prepared.

Research That Ships

BNB Chain will continue to collaborate with top international academic and research institutions to explore the latest technology research and productization practices in blockchain technology. 

Looking Ahead

H1 2026 set targets, delivered them, and measured the results on mainnet. H2 applies the same discipline to a harder set of problems: doubling throughput again on a live network, isolating applications from each other's load, pricing the chain for the next wave of enterprises, and laying the architectural foundation for what comes next.

The goal has not changed: to establish BNB Chain as the premier global network for high-frequency trading and AI integration - defined by speed, institutional-grade reliability, and infrastructure that holds up under real use.