What Is HyperEVM?

HyperEVM is a fully EVM-compatible execution environment embedded directly into the Hyperliquid Layer-1 blockchain. It launched on mainnet on February 18, 2025. It is not a rollup, not a sidechain, and not a separate chain — it is part of the same L1, secured by the same HyperBFT consensus as the rest of Hyperliquid.

What makes HyperEVM different from every other EVM chain is what it connects to. On Ethereum, Arbitrum, or Base, smart contracts interact with AMMs and external oracles. On HyperEVM, smart contracts can natively read from and write to HyperCore — Hyperliquid's high-performance trading engine that runs a fully on-chain central limit order book processing up to 200,000 orders per second. This means a Solidity contract can check live perp prices, place limit orders on the order book, and manage vault positions — all on-chain, with no bridges or off-chain components.

HyperEVM runs standard Solidity and Vyper contracts. All existing Ethereum tooling works: Foundry, Hardhat, MetaMask, Remix. The gas token is HYPE, and both base fees and priority fees are burned. It uses a dual-block architecture — small blocks every 2 seconds (2M gas limit) for fast lightweight transactions, and big blocks every 60 seconds (30M gas limit) for contract deployments and complex operations.

Understanding the HyperCore and HyperEVM relationship is key to understanding Hyperliquid's architecture. HyperCore is the Rust-based, high-performance trading engine — it handles order matching, margining, liquidations, and all perps and spot trading logic with sub-second finality. HyperEVM is the permissionless smart contract environment where developers can deploy arbitrary Solidity code.

They are not separate chains. They run on the same L1, under the same HyperBFT consensus, in the same blocks. They maintain independent state but share consensus. HyperCore is permissioned (a fixed set of well-defined transaction types like placing orders). HyperEVM is permissionless (deploy anything). Together they compose the full Hyperliquid state.

This distinction matters for referrals and fees: trading volume on HyperCore (the order book) is what counts toward fee tiers, referral earnings, and builder code revenue. When a HyperEVM smart contract places an order on HyperCore via CoreWriter, that volume is attributed based on the builder code attached to the order. If you're building on HyperEVM and want to earn from the trades your app generates, attach your builder code to every order routed through CoreWriter.

CoreWriter (activated on mainnet July 5, 2025) is the system contract at address 0x3333333333333333333333333333333333333333 on HyperEVM. It completes the two-way communication loop between smart contracts and the trading engine, and it is the technical cornerstone of HyperEVM composability.

Before CoreWriter, HyperEVM contracts could only read HyperCore state. CoreWriter enables write operations: placing limit orders on HyperCore's perps and spot order books, transferring spot tokens between accounts, managing vaults (deposit, withdraw, create tokenized vaults), staking HYPE to validators, and delegating authorized agents for trading.

How it works: a smart contract calls the CoreWriter system contract, which burns roughly 25,000 gas and emits a log event. HyperCore processes that log as an action. CoreWriter is permissionless — any developer can use it. There is an intentional delay of a few seconds on order actions and vault transfers, preventing latency advantages from HyperEVM mempool observation. This delay does not meaningfully affect UX for most applications.

CoreWriter is what allows any HyperEVM smart contract to programmatically interact with the deepest on-chain liquidity without bridges, oracles, or off-chain components. A vault contract can read prices via precompiles, execute a trading strategy via CoreWriter, and settle — all on-chain.

Precompiled contracts on HyperEVM provide native read access to HyperCore state. They behave like smart contracts at well-known addresses (starting at 0x0000000000000000000000000000000000000800) but execute native code rather than EVM bytecode, making them fast and gas-efficient.

Available precompiles include: reading a user's perpetual futures positions, reading spot token balances, checking vault equity, querying staking delegations, and getting real-time oracle prices for any perp market. The oracle prices are computed by each validator as a weighted median from major exchanges including Binance, OKX, Bybit, Kraken, and others.

This means lending protocols can use HyperCore oracle prices for collateral valuation and liquidation triggers — no Chainlink or Pyth integration needed. Vault contracts can read their own P&L from live perps positions and adjust strategies. Any smart contract can access real-time order book data natively. The combination of read precompiles and CoreWriter creates full two-way composability between arbitrary smart contracts and the on-chain order book — something no other EVM chain offers.

Rysk Finance (rysk.finance) is a decentralized options protocol live on HyperEVM that demonstrates the power of CoreWriter and precompile composability. Rysk offers covered calls and cash-secured puts — users deposit an underlying asset, select a strike price, and receive an upfront premium in stablecoins immediately.

What makes Rysk compelling is how it uses Hyperliquid's infrastructure. Its Dynamic Hedging Vault continuously adjusts exposure to price movements by executing hedge trades directly on HyperCore's perp order books via CoreWriter. It reads live prices via precompiles for real-time risk management. Pricing is done through a fast on-chain RFQ auction where counterparties bid and the best price is offered to the user.

For traders, Rysk enables strategies that were previously impossible on-chain: earn premium on your HYPE, ETH, or BTC holdings through covered calls while the protocol automatically hedges the delta risk using Hyperliquid's deep perp liquidity. Settlement is automatic at 8:00 AM UTC, referencing the oracle spot price. Rysk has generated roughly $5 million in premiums and $250 million in notional volume.

HyperEVM has reached approximately $2.1 billion in TVL and over 100 deployed applications. The ecosystem spans lending (HyperLend with roughly $360 million TVL, Felix Protocol with roughly $400 million), liquid staking (Kinetiq with over $1 billion in kHYPE), DEX infrastructure (HyperSwap for AMM pools), and options (Rysk Finance). Infrastructure providers including Chainlink (CCIP integration) and LayerZero are live on HyperEVM.

For developers, the barrier to entry is near-zero if you already write Solidity. The unique value proposition is what you gain: direct composability with the deepest on-chain perps and spot order book in crypto. On Ethereum or Arbitrum, smart contracts must rely on AMMs, external oracles, and off-chain infrastructure. On HyperEVM, the order book is a first-class citizen accessible from any smart contract.