Hyperliquid runs on a purpose-built Layer 1 using HyperBFT consensus, producing blocks in well under a second and reaching finality in the same window.
What finality means
On most chains, a confirmed transaction is probabilistic for a while — it looks settled, then a reorganisation could undo it. Finality means the state is settled and cannot be reversed.
For a trader, sub-second finality means a fill is a fill. The position exists, and there is no window in which it might unwind.
Why the exchange needed its own chain
An on-chain order book processes order placement, cancellation and matching at exchange speed. General-purpose chains cannot: block times are too slow, throughput too low, and gas makes cancellation expensive. Market makers cancel constantly, so a venue that charges for it has no liquidity.
Hyperliquid built a chain that does one thing.
Two block cadences
The chain produces small, fast blocks for HyperEVM transactions and larger blocks for order book settlement, from the same validator set. Trading isn’t slowed by smart contract activity.