RaktSetu

RaktSetu– Bridging Lives, One Drop at a Time. Empowering life-saving connections through verified blood donation, gamified impact, and compassionate tech.

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Inspiration

The spark for RaktSetu* came from the voice of Radhika Sawh, a genetic counselor living with **beta thalassemia major. Her words _“It is very scary for people like me who depend on blood transfusions to hear about blood shortages.” Grounded us in a painful truth: finding safe, timely blood in India is still uncertain, and often, life-threatening.

We discovered Blood Warriors, an NGO making real change through advocacy, awareness, and community care.
Their work inspired us to ask: How can we use tech to amplify empathy, ensure verified impact, and empower both donors and patients?

What it does

RaktSetu is an AI-assisted blood and aid platform that bridges donors, patients, NGOs, and hospitals, ensuring that help isn't just promised, but delivered.

Key Features:

  • Personalized blood donation alerts based on donor health, history, and blood type.
  • AI-powered behavioral nudges to boost donor retention and build long-term, compassionate donation habits.
  • Gamified dashboards for donors and volunteers with real-time impact tracking (e.g., lives impacted, donation streaks, leaderboard).
  • Document-verified crowdfunding for thalassemia and rare-disease patients, ensuring authenticity and transparency.
  • Real-time SOS bridge that connects emergency requests to nearby verified donors through geo-tagged alerts and smart routing.
  • NGO and hospital network integration for centralized request verification and streamlined donation logistics.
  • Donor-friendly medical records and history log, making it easier to manage eligibility and follow-up reminders.
  • Community engagement and recognition badges for sustained involvement.

Every drop, every rupee, every alert is traceable, ethical, and human-first.

** How We Built It**

We engineered RaktSetu as a modular, AI-first platform combining smart infrastructure with accessible design to address real-world donor-patient challenges. Here’s a breakdown of how we brought it to life:

* Frontend **

React.js + Tailwind CSS: For building a fast, mobile-responsive UI optimized for accessibility and modular component design.

IndexedDB + PWA Support: Enables offline usage in rural/low-bandwidth areas.

Interactive Dashboards: Built with Plotly/Chart.js for real-time blood availability, donor trends, and campaign tracking.

** Backend **

Flask (Python): Lightweight backend for routing, API handling, and ML model integration.

Firebase Cloud Functions: For real-time triggers like donor notifications, fraud checks, and reward point tracking.

Role-based access control: Custom flows for Donors, Patients, NGOs, Hospitals, and Moderators.

** Databases **

Firebase Realtime DB + Firestore: Handles dynamic data like live donation requests, chat messages, and history logs.

SQLite: Local-first storage for rural edge deployment with periodic sync logic.

Blockchain Ledger (Polygon): Immutable logging of donations and fund transfers (planned in post-hackathon phase).

** AI & Machine Learning **

We used a combination of supervised models, ranking systems, and NLP pipelines to power the core intelligence:

Use Case Algorithm / Framework Donor Matching Engine - LightGBM Ranker with Pairwise Loss Donation Habit Prediction - K-Means Clustering for behavioral grouping Fraud Detection - Scikit-learn Classifier trained on document/metadata signals Sentiment & Mood Detection - AWS Comprehend for emotion-aware suggestions Document Parsing & Classification - spaCy for custom NER & doc scoring FAQ Assistant - LangChain + FAISS powered Retrieval-Augmented Generation bot Motivational Nudges - GPT-4 for story generation and personalized messages

** APIs & Integration**

Google Maps API: Geo-aware donor-patient matching and heatmaps.

Assembly AI: Speech-to-text for accessibility in donation flows.

Twilio / WhatsApp: Real-time notifications and emergency alerts.

AWS Textract + Comprehend: OCR and NLP-based document analysis.

OpenAI API: For donor story generation, emotional appeal texts, and blog creation.

Razorpay API: Secure fund handling for verified patient donations.

IPFS / Polygon Minting (NFTs): For impact story badges (in roadmap).

Verification & Trust Layer OCR Pipeline: For PAN cards, blood test results, and NGO certifications.

Manual Review Workflow: Admin/NGO panel for flagging duplicate or suspicious cases.

AI-based Fraud Confidence Scoring: Evaluates doc authenticity using metadata and content similarity.

Challenges we ran into

  • Verified crowdfunding: Ensuring medical documents are legitimate while maintaining user privacy and dignity was a constant balance of automation and human oversight.
  • Retaining donors: Tackling donation drop-off rates required thoughtful use of gamification, behavioral nudges, and education to promote long-term commitment.
  • Inclusion: Designing a user experience that works for both tech-savvy urban donors and less digitally literate caregivers in rural areas challenged our assumptions and design choices.
  • Trust-building: In a domain plagued by misinformation and fraud, building a system that is transparent, ethical, and verified was non-negotiable—and deeply technical.

Accomplishments that we're proud of

  • Crafted a detailed, research-backed concept addressing real-time blood emergencies with a user-first approach.
  • Designed India’s first donor-focused, gamified dashboard concept centered around measurable, verified impact.
  • Built a verified aid framework for thalassemia patients aligned with Blood Warriors’ mission of advocacy and care.
  • Prioritized empathy, ethics, and scale from day one—ensuring our solution isn’t just technically sound, but truly human-centered.

What we learned

  • Technology doesn't drive change, people do. Human-first design is what makes innovation matter.
  • Earning trust through verified impact is tough, but it's the only path to lasting relevance.
  • When tech amplifies real stories, action follows. Emotion isn't a feature, it's the catalyst.
  • Conversations with patients and caregivers reshaped our approach more than any whitepaper ever could.

What's next for PulseChain

  • Partnering with Blood Warriors and other NGOs for real-world pilot deployments.
  • Integrating with hospital blood banks for inventory transparency.
  • Launching a progressive web app for low-bandwidth access in rural areas.
  • Creating awareness modules for schools and colleges to build a culture of regular donation.
  • Moving toward blockchain-based donation and aid tracking for immutable transparency.

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