The Stellar DeFi Lending & Borrowing Protocol is a decentralized finance (DeFi) platform built on the Stellar blockchain using Soroban smart contracts. This platform is designed to enable fast, secure, and low-cost lending and borrowing services, providing an accessible alternative to traditional financial systems.

Traditional financial systems suffer from:

• High Fees & Delays: Transaction costs and processing times are often excessive.
• Limited Accessibility: Many underserved or underbanked populations lack access to reliable credit.
• Centralized Control: Central intermediaries can lead to inefficiencies, opacity, and risk of manipulation.
• Inefficient Risk Management: Traditional collateral and liquidation methods can be slow and inflexible.

Our solution leverages Stellar’s low fees and fast settlement times along with Soroban’s smart contract capabilities to create a transparent, efficient, and decentralized lending protocol that:

• Reduces costs and speeds up transactions.
• Provides global access to financial services.
• Automates collateral management and risk controls using on-chain logic.
• Empowers users with full custody and transparent operations.

• Core Functions: Deposit collateral, borrow, repay, withdraw, and liquidate positions.
• Development: Written in Rust using the Soroban SDK.
• Dynamic Collateral Management: Integrates off-chain price oracles to update collateral valuations in real time.
• Event Logging: Emits events for key transactions (deposits, withdrawals, borrows, liquidations).

• API Endpoints: REST/GraphQL interfaces for frontend communication.
• Blockchain Integration: Connects to Stellar’s Horizon and Soroban RPC endpoints for transaction submission and monitoring.
• Data Indexing & Caching: Stores smart contract events for real-time dashboards and analytics.
• Oracles Integration: Fetches external price data to support dynamic protocol adjustments.

• User Experience: Modern UI (built with React, Vue, or Angular) for seamless interactions.
• Wallet Integration: Supports Stellar wallet connections (e.g., Freighter, Albedo) for secure transaction signing.
• Dashboard: Real-time display of account balances, loan statuses, collateral ratios, and interest accrual.
• Interactive Actions: Simple forms to deposit, borrow, repay, and withdraw assets.
• Notifications: Real-time alerts for important events (e.g., liquidation warnings).

graph LR
    A["Frontend UI (Nextjs + Typescript + Tailwind)"] --> B["Backend API (NodeJS + Prisma + Postgres)"]
    B --> C["Stellar Blockchain (Horizon & Soroban RPC)"]
    C --> D["Smart Contracts (Rust, Soroban)"]

Q1 2025: Research & Planning

• Conduct detailed market research and finalize project requirements.
• Design system architecture and draft initial smart contract specifications.

Q2 2025: Core Development

• Develop and test core smart contracts using Soroban.
• Build the backend API for seamless blockchain interaction.
• Integrate off-chain price oracles for dynamic collateral and risk management.

Q3 2025: Frontend Development & Beta Testing

• Create a user-friendly frontend with wallet integration and real-time dashboards.
• Launch a closed beta to gather community feedback and iterate on UX/UI.

Q4 2025: Security Audits & Mainnet Launch

• Perform comprehensive security audits and code reviews.
• Optimize performance and scalability.
• Officially launch the platform on Stellar’s mainnet and initiate community outreach.