Mar 29
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Complete technical walkthrough of DotLend — the first native money market on Polkadot Hub EVM. Built solo for the Polkadot Solidity Hackathon 2026 by Arhant Barmate (Orthonode Infrastructure Labs, Bhopal India). ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ WHAT IS DOTLEND ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ DotLend is the first Aave-style money market deployed natively on Polkadot Hub EVM. Users deposit vDOT (Bifrost liquid staking token, ~15% APY) or native DOT via WPAS as collateral and borrow Hollar stablecoin at 70% LTV — keeping their staking yield while accessing liquidity. ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ WHAT'S LIVE ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ ✅ 13 contracts on Polkadot Hub TestNet (Chain ID 420420417) ✅ 102 tests passing, 0 failures ✅ Two collateral markets: vDOT + WPAS (native DOT) ✅ Live oracle posting real DOT prices every 5 minutes ✅ ZK solvency proof (Noir/UltraHonk) every 5 minutes on Railway ✅ AI risk advisor with live position grading (Claude AI) ✅ TreasuryRouter — principal burned on repay, only stability fee to treasury ✅ XCMTreasuryDispatch — calls live XCM precompile from pure Solidity ✅ WalletConnect — works on mobile ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ LINKS ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 🌐 Live app: https://nexucore.xyz 💻 GitHub: https://github.com/orthonode/dotlend 🔍 Blockscout: https://blockscout-testnet.polkadot.io 🏆 DoraHacks: https://dorahacks.io/buidl/40381 🐦 Twitter: https://x.com/OrthoNodeSys ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ TECH STACK ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ Solidity 0.8.20 · OpenZeppelin v4.9.6 · Hardhat · resolc 0.5.0 Next.js · TypeScript · viem v2 · wagmi v2 · TailwindCSS Noir 1.0.0-beta.19 · UltraHonk · Railway · Python · Claude AI ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ HACKATHON ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ Polkadot Solidity Hackathon 2026 — co-led by OpenGuild and Web3 Foundation Track 1: EVM Smart Contract Track 2: PVM Smart Contract (XCM precompile) OpenZeppelin Sponsor Track #Polkadot #DeFi #Web3 #Solidity #PolkaVM #vDOT #Bifrost #Hackathon #MoneyMarket #ZeroKnowledge #AI #Blockchain