GokhanCey/pixel-africa

# PixelAfrica **One Pixel, One Life.** PixelAfrica turns every donated blood unit into a verifiable digital record secured on Hedera Hashgraph, demonstrated through a hackathon prototype focused on blood logistics traceability. It helps hospitals, couriers, and donors track each blood bag from collection to transfusion with full traceability. --- ## Motivation In many regions, donated blood doesn’t always make it to patients due to poor tracking and logistics. We wanted to build something that could be trusted, a system where hospitals, couriers, and collection centers work with transparent data shared on a distributed ledger, not in isolated systems or paper records. --- ## Problem Even successful blood donation campaigns lose up to 25% of collected units due to: - Expired or mishandled inventory - Poor traceability during transport - Fragmented or missing data - Lack of unified accountability These inefficiencies cost lives and damage trust in the medical supply chain. --- ## Solution PixelAfrica establishes a verifiable trail for each blood unit. Every bag is registered with key information (type, volume, expiry, responsible parties) and tracked on **Hedera Consensus Service (HCS)**. Each action (collection, transit, hospital testing, transfusion) is securely recorded and retrieved via **Mirror Node APIs**. **Key features:** - Wallet-based role authentication using **HashConnect** - Immutable event history with timestamps - No centralized storage or database required --- ## Core Pages | Page | Purpose | |------|----------| | **Home (Pixel Map)** | Shows all registered blood bags as visual tiles, each color-coded by status. | | **Register** | Used by collection centers to record a new bag, assign courier and hospital roles, and generate a QR code. | | **Transit** | Couriers scan and update transport status using connected wallets. | | **Hospital** | Doctors and hospital staff scan bag IDs to view history and mark test results or outcomes (tested, …