ArbiRupee is a Rupee-backed stablecoin on Arbitrum, enabling INR deposits via Razorpay and 1:1 arbINR minting for seamless DeFi access.
ArbiRupee is a next-generation fiat-to-DeFi gateway built on Arbitrum that simplifies the on-ramp process for Indian users. Rather than navigating complex exchanges, fees, and delays, users can deposit Indian Rupees (INR) and instantly mint arbINR — India's digital rupee on the Arbitrum blockchain. ArbiRupee serves as the seamless bridge that unlocks India's massive economy for the global on-chain world.
Frontend (Next.js & React):
A clean, intuitive dashboard that looks and feels like a top-tier fintech app.
Secure wallet connection flow (MetaMask).
Simple interfaces for Deposit, Withdraw, and Transfer.
Real-time display of arbINR balance and transaction history using Wagmi & Viem.
Backend (Simulated Fiat Gateway):
A simulated backend layer that validates user deposit requests (for hackathon purposes).
Secure communication with smart contracts to authorize arbINR token minting.
Designed for replacement with a real, regulated payment partner API post-hackathon.
Smart Contracts (Solidity on Arbitrum):
arbINR.sol: An OpenZeppelin-based ERC-20 token contract representing the 1:1 backed digital Rupee.
Minter.sol: A permissioned contract that exclusively controls minting of new arbINR tokens, ensuring secure supply management.
DeFi Integration Layer:
Seamless connection to deep liquidity sources on Arbitrum, like Uniswap.
Enables users to instantly swap arbINR for other tokens like USDC or ETH directly within the ArbiRupee interface.
✅ Direct INR On-Ramp — Users can seamlessly deposit (simulated) INR and receive arbINR on Arbitrum.
✅ Instant arbINR Minting — The core smart contracts for minting the digital Rupee are live and functional.
✅ Professional User Dashboard — A fully designed UI to manage balances and access DeFi opportunities.
✅ Seamless Swap Functionality — The architecture allows users to swap arbINR for other tokens through Arbitrum's DeFi ecosystem.
✅ Arbitrum Sepolia Deployment — The entire smart contract system is deployed and verified on the Arbitrum testnet.
🔗 Real-World Integration:
Fiat Partners: Integrate with licensed payment aggregators in India to enable real UPI and bank transfers.
Full Off-Ramp: Build withdrawal capabilities for users to convert arbINR back to INR in their bank accounts.
dApp Partnerships: Position ArbiRupee as the default on-ramp for other Arbitrum-based applications targeting the Indian market.
📊 User-Facing Features:
Proof of Reserve Dashboard: A real-time, on-chain dashboard showing that every arbINR is fully backed by an equivalent amount of INR.
Advanced Analytics: Historical charts of user activity and rewards earned.
🛡️ Security & Trust:
Full Security Audits: Conduct multiple, independent security audits of all smart contracts before mainnet launch.
Regulatory Sandbox: Engage with regulators and apply to programs like the RBI's sandbox to demonstrate our compliant model.
Direct-to-DeFi Access: Unlike traditional exchanges, we land users and their funds directly on Arbitrum, ready for immediate use in DeFi.
Superior User Experience: We eliminate multiple confusing steps and provide a single, intuitive application.
Ecosystem Building: By creating arbINR, we're building a foundational liquidity primitive that can make Arbitrum the natural home for the Indian market.
Radical Cost Reduction: We eliminate high withdrawal fees and hidden currency conversion costs that plague existing solutions.
During the Arbitrum Hackathon, we took ArbiRupee from a concept to a fully functional MVP deployed on the Arbitrum Sepolia testnet. We designed a production-ready UI/UX that sets a new standard for DeFi applications. We successfully wrote, tested, and deployed our two core smart contracts: arbINR.sol for the token and Minter.sol for secure minting. The frontend was built using Next.js, with full wallet integration and real-time data fetching from our on-chain contracts. We successfully demonstrated the end-to-end user flow of depositing simulated INR to minting arbINR and having it appear in the user's wallet. While the fiat gateway is simulated, the core on-chain infrastructure is complete and robust, making ArbiRupee a polished, testnet-ready MVP with a clear path to mainnet.
ArbiRupee is currently bootstrapped and the fully functional MVP is live on the Arbitrum Sepolia testnet. Having proven the core on-chain mechanics and developed a market-ready user interface, we are now looking to raise a pre-seed round. This funding will be used to secure full security audits, integrate our first regulated fiat partner in India, build out the off-ramp functionality, and prepare for our mainnet launch. Our goal is to turn ArbiRupee from a best-in-class prototype into the definitive, production-ready on-ramp for the Arbitrum ecosystem in India.
