Crypto Currency

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1️⃣ Background of Development

• Issues with Bitcoin’s Original Intent

Bitcoin aimed for peer-to-peer electronic cash without intermediaries. However, centralization issues and high fees hinder ordinary users.

QR Coin addresses these challenges by enabling true individual participation and reducing dependency on centralized entities.

• Background of QR Coin’s Birth

QR Coin provides a secure, reliable, and user-friendly electronic currency using QR code technology for seamless online and offline transactions.

QR Coin restores trust in digital currency and empowers individuals worldwide.

2️⃣ QR Coin Implementation

• Wallet Address

Users generate private keys and wallet addresses locally, protecting personal assets. SHA and RIPEMD hashing plus Base58 encoding secure transactions.

• Transactions

• Coin Transfer: Standard transfer using private keys.
• Check Creation/Receipt: Requires recipient QR Coin account; includes expiration.
• Bill Creation/Receipt: Recipient not required; good for donations or restaurants.
• Purchase Transfer: Scan product QR code to pay automatically.
• Game Registration: Developers can upload games and earn QR Coin revenue.

• Business Transactions

• Product/Food QR Codes: Simplifies merchant-customer transactions.
• Event Coin Creation/Cancellation: For promotional or marketing use.

• Commission & Verification

Fixed commission of 0.002% per transfer (minimum 0.02 QR) rewards verification institutions and coin issuers, ensuring fairness and network growth.

• Blockchain Structure

Uses a Triangular Proof system with Merkle trees for transaction integrity. No mining needed, conserving resources while enabling participation in profit generation via games.

3️⃣ Technologies Used

• Angular, JavaScript, CSS, HTML
• SpringBoot, Spring Technologies
• RESTful API, gRPC, Protocol Buffers
• SQL Databases

4️⃣ Future Plans & Principles

• Game Registration System: Platform for developers to upload games & items to generate revenue.
• Non-Disclosure Principle: Keeps source code private for user security.
• Global Usage: QR Coin is trusted and usable worldwide.