🔗 GitHub Repository: https://github.com/sylvia-barick/stellar_cipher
🌐 Live Deployment: https://stellarnexus-three.vercel.app/
Nexus-Shield is an enterprise-grade Contract Lifecycle Management (CLM) platform designed to solve critical challenges in cross-border trade contracts:
- Jurisdictional risks
- Version inconsistencies
- Delayed approvals
- Lack of trust & audit transparency
Traditional contract workflows rely on fragmented tools and opaque audit trails.
Nexus-Shield replaces this with a unified digital workbench powered by AI and secured by blockchain.
Nexus-Shield follows a modular, layered architecture ensuring scalability, security, and maintainability.
- Built using Next.js (React)
- Tailwind CSS for enterprise-grade UI
- Framer Motion for smooth transitions
- Role-based access control
- Version comparison & lifecycle tracking
- AI insights visualization dashboard
A dedicated AI service that provides contract intelligence.
Capabilities:
- Contract summarization
- Clause extraction
- Risk detection
- Context-aware Q&A
- Missing clause identification
🔒 Operates strictly on uploaded contract content for explainability and reliability.
Tech Stack:
- Python + FastAPI
- LangChain (RAG architecture)
- LLM APIs
Ensures integrity, immutability, and verifiable audit trails.
Key Features:
- SHA-256 hash generation for each contract version
- On-chain anchoring via Stellar
- Soroban smart contracts
- Immutable approval records
- Wallet-based digital signatures
Blockchain Stack:
- Stellar SDK
- Soroban Smart Contracts
- Freighter & Albedo Wallets
- Merkle anchoring
- Contract dashboard
- Lifecycle tracking
- Version history management
- Multi-step approval workflows
- Visual version comparison
- Unified audit timeline
- Highlights obligations, timelines, risks, and key terms
- Payment terms
- Termination clauses
- Liability clauses
- Confidentiality sections
- Flags missing clauses
- Explains why clauses are risky
- Identifies unusual legal language
- Context-grounded answers
- Transparent source references
- Immutable contract hash anchoring
- Timestamped approval events
- Digital signature tracking
- Public hash verification (optional)
- Tamper-proof lifecycle history
-
Contract Creation
- Draft or upload contract
-
AI Analysis
- Automatic summary
- Clause extraction
- Risk detection
-
Review & Collaboration
- Multi-party negotiation
- Real-time version tracking
-
Blockchain Verification
- Hash comparison with Stellar ledger
- Integrity validation
-
Execution
- Wallet-based digital signatures
- Final on-chain timestamped record
- Clean folder structure
- Modular architecture
- Separation of concerns:
- Frontend
- AI services
- Blockchain logic
- Enterprise-ready scalability
- Production-grade security standards
Designed for enterprise adoption in:
- Cross-border trade contracts
- Legal services
- Procurement
- SaaS agreements
- BFSI compliance workflows
By combining:
✔ AI-driven legal intelligence
✔ Blockchain-backed trust
✔ Modern web collaboration
Nexus-Shield reduces disputes, accelerates approvals, and ensures verifiable contract integrity.
Nexus-Shield demonstrates how modern web systems, explainable AI, and blockchain trust layers can converge into a single, end-to-end enterprise CLM solution.
Secure. Intelligent. Borderless.
Sylvia Barick
Debojyoti De Majumder
B.Tech | Blockchain & AI Systems Developer