⚡ LightningPay
LightningPay is a learning-focused Bitcoin & Lightning payment app built with Flutter, designed to demonstrate how modern fintech systems work internally — from deposits and conversions to peer-to-peer BTC transfers.
🚀 Why This Project
I built LightningPay to deeply understand:
How local currency enters and exits a financial system
How Bitcoin (BTC) can act as an internal settlement layer
How P2P payments can be simplified using usernames and QR codes
How real fintech apps separate Deposit, Convert, Send, and Withdraw
This project focuses on system design, clean architecture, and realistic flows, not just UI.
✨ Key Features
Onboarding & Auth – step-by-step user setup and profile management
Wallet Dashboard – BTC balance with local currency equivalents
Send BTC – via username or QR code (BTC-only transfers)
Receive BTC – username & QR code (no fiat exposure)
Deposit (Mock) – local currency funding via virtual account number
Convert – local currency ↔ BTC (mock exchange rates)
Withdraw (Mock) – BTC → local currency → bank (simulated)
Transaction History – detailed receipts with PDF export
🔁 Example Flow (Simulated) Local Bank → Deposit (Local Currency) → Convert (Local → BTC) → Send BTC (Username / QR) → Receive BTC → Convert (BTC → Local) → Withdraw to Bank
BTC is the only transferable asset between users. Local currency is used only for entry and exit.
🧠 What This Demonstrates
Ledger-based financial modeling
Currency conversion logic
P2P payment system design
Clean Flutter architecture
How Bitcoin & Lightning fit into real payment systems
🛠️ Tech Stack
Flutter
Firebase (Auth & Firestore)
Mock services & ledger-based state management
📸 Screenshots
(Add screenshots here to make the repo stand out for recruiters)
(Create a /screenshots folder and add 5–6 clean UI images.)
🔗 Demo & Source Code
💻 Source Code: https://github.com/your-username/lightningpay