2 snakes, 1 winner. Both players stake crypto. Be the best snake to win the full pot.
$7,250 · Hardhat · Best projects built using Hardhat 3 · +2 more
H
Hardhat
The Ethereum development environment for professionals by Nomic Foundation. Give the Hardhat 3 alpha a try: Rust rewrite, Solidity tests, multi-chain, and more.
- Prize money awarded
- $25,000
- Prizes
- 10
- Winning projects
- 10
- Hackathons
- 5
- Largest prize
- $5,000
- Active
- 2025
What they reward
Tech their winners favour
Share of Hardhat's winners using it, against all entries at the same hackathons.
- hardhat100% of winners · 25% of entries
- tailwind40% of winners · 27% of entries
- typescript50% of winners · 35% of entries
Recurring prizes
Tracks offered at more than one hackathon.
- Best projects built using Hardhat 34 hackathons · about $6,250 · last 2025
Hackathons
- Buenos Aires Nov 21–23, 2025$10KGold2$10K
- ETHOnline 2025 Oct 10–31, 2025$5KRuby2$5K
- New York 2025 Aug 15–17, 2025$5KRuby3$5K
- Cannes Jul 4–6, 2025$5KRuby3$5K
- Prague May 30 – Jun 1, 2025$1Ruby0–
Winners
All 10 winning projects →
ProverX connects AI agents to on-demand ZK proofs, giving them a fast, reliable proving service.
$5,125 · Hardhat · Best projects built using Hardhat 3 · +1 more
Added ledger wallet integration to hardhat 3, enabling secure hardware transaction signing
$4,667 · Ledger · [L] HARDWARE INTEGRATIONS · +2 more
Play. Earn. Socialize. Educate. Your digital pet, brought to life!
$4,667 · Zircuit · Best Project on Zircuit · +1 more
Tools to make clear signing easier. Auto generate ERC 7730 files with tx intents.
$4,167 · Ledger · CLEAR SIGNING (ERC-7730) · +1 more
Financial infrastructure for treasury management and more.
$3,667 · Circle · Enable instant, composable access to multichain USDC balances · +1 more
Store secrets In Cannes movie posters & credit scenes - privacy preserving steganography
$3,167 · Flow · Best Killer App on Flow · +1 more
Vigil3 scans smart contracts for vulnerabilities using AI and Slither, right in VS Code.
$2,500 · Hardhat · Best projects built using Hardhat 3
Web3 wallet with TOTP 2 factor authentication and zero-knowledge proofs.
$2,500 · Hardhat · Best projects built using Hardhat 3 · +1 more
Shielded token built using MPC with garbled circuits for private, secure on-chain transactions
$1,667 · Hardhat · Best projects built using Hardhat 3