hypersim-engine

🧠 Project Name

Hypersim Engine

🔍 Description

Hypersim Engine simulates HyperEVM + HyperCore transactions with accurate gas accounting and a two‑phase execution model. It enables fast, realistic what‑if analysis for single transactions and bundles, with support for state overrides, access lists, and detailed traces.

🛠️ How It Works

• Phase A: Execute EVM transaction on a Hardhat fork, resolving precompiles against live API for accurate state reads (e.g., oraclePx, perpAssetInfo, positions)
• Phase B: Decode CoreWriter actions and apply them as a simulated next HyperCore block.

🚧 Challenges We Faced

- Why This Project is Unique

• It's easy to use Foundry/Hardhat or Alchemy simulator without precompile implementation but our main challenge was implementing **precompiles against live data** in a HyperEVM environment.
• Technical challenges

💻 Demo

• Video: https://youtu.be/T-WnnFpehG0
• Successful testing of L1Read.sol contract with latest data from main net
• 

📂 Project Links

• Code: http://github.com/hyperSimLabs/hypersim-engine (access granted to @HL-Hackathon)
• API/usage docs: see README.md: https://github.com/HyperSimLabs/hypersim-engine/blob/main/README.md
• Docs/Notion: https://github.com/HyperSimLabs/hypersim-engine/blob/main/ARCHITECTURE.md and https://github.com/HyperSimLabs/hypersim-engine/blob/main/EDR_ARCHITECTURE.md

👥 Team

• Adarsh Kumar: Rust, Go, and Solidity engineer with experience in DeFi and blockchain backend systems. Distributed systems enthusiast LinkedIn
• Amit Yadav: Blockchain engineer with deep experience in DeFi architectures(Solidity and Cosmos-SDK) and backend tooling for scalable trading simulations and execution.
  - LinkedIn