TLDR:
- BNB Chain cut block intervals from 750ms to 450ms between January and June 2026.
- Benchmark throughput nearly doubled to 5,200 transactions per second in H1 2026.
- New Layer 1 architecture targets 100,000+ TPS with testnet launch by late 2026.
- BNB Chain plans quantum resistant upgrades that preserve existing user addresses.
BNB Chain published its H2 2026 technical roadmap on July 8, outlining plans to double mainnet throughput after strong first half results.
The network cut block intervals from 750 milliseconds to 450 milliseconds and raised benchmark throughput to roughly 5,200 transactions per second between January and June 2026.
The update also detailed a next generation Layer 1 architecture targeting over 100,000 transactions per second, alongside continued research into quantum resistant security measures.
First Half Performance Gains Set the Baseline
BNB Chain measured its January to June progress through three core metrics. Block intervals dropped to 450 milliseconds while memory finality fell from 1,125 milliseconds to 650 milliseconds. Benchmark throughput nearly doubled from about 2,800 transactions per second to 5,200.
The network also became more stable during this period. Following the Osaka and Mendel hard fork, re-org occurrences on the BSC mainnet dropped noticeably compared to earlier months.
Four engineering features drove most of the improvement. Block Level Access List pre-declares state access patterns to support future parallel processing. Incremental Snapshot speeds up chain synchronization for new or lagging nodes.
EVM SuperInstruction reduced interpreter overhead by combining common opcode sequences, which directly boosted throughput. Extended Voting Rules strengthened the fast finality mechanism during adverse network conditions.
The BSC Rust client reached full Reth v2.0 compatibility during this window. This included Sparse Trie Cache, Proof V2, and RocksDB support, delivering a twofold performance gain.
Middleware also advanced, with the BNB Agent Studio and Agent SDK launching alongside the Middleware Payment Protocol SDK.
Second Half Targets a New Architecture
BNB Chain set three commitments for the second half of 2026. The first goal is doubling mainnet throughput again, building toward a tenfold increase across the wider network over time.
The second commitment focuses on isolating application traffic so demand spikes in one area do not degrade performance elsewhere. Gas fee structures will also be adjusted to lower entry costs for Web2 and Web3 enterprises.
These goals connect to active workstreams. BEP-675 implementation, dedicated lane solutions for peak activity, and FOCIL inspired technology for transaction inclusion are already underway. BAL based parallel execution aims to cut block import latency further.
Beyond the current stack, BNB Chain is developing a new Layer 1 architecture. It targets over 100,000 transactions per second, sub-50 millisecond preconfirmation, and a TxStream design that removes the public mempool to limit front running.
The new chain will include PriorityLane for reserved block space and native privacy features with selective disclosure.
Testnet release is planned for late 2026, with mainnet following in early 2027. In its closing statement, BNB Chain said its aim remains building infrastructure that holds up under real use.
Quantum resistant research will continue throughout this period, layering new cryptography on top of existing systems without altering user addresses.
