A small blockchain implemented in Java

semantic block chain for immunization and vaccine records (under development)

Your own little blockchain NeXT (NXT, ⥉) to customize and use for your purposes! (Created by C++, PHP, Java, JavaScript + Python for start)

Verification & Medical Records-Faking Prevention

Keplereum is a decentralized satellite communication system built on Ethereum blockchain technology. It allows ground stations to track and manage their satellites each through a dedicated private Ethereum Proof-of-Authority (PoA) blockchain, ensuring secure, tamper-proof, and efficient data transmission.

UVerify makes blockchain technology accessible to everyone, regardless of prior experience. Effortlessly secure your file or text hashes on the Cardano blockchain.

A Crypto Wallet

Presenting FDRS, Falcons Disaster Response System. If there is certain calamity occurs nearly users mobiles can sent the SOS signals with their android/ios devices. those signals will reach to FDRS admin panel containing network of CRPF, NDRF, Police, Fire and Hospital departments. Powered by Ai and Sensing tech which enables it innovative purpose.

Este projeto implementa uma blockchain simples em Java, com foco em demonstrar os conceitos básicos de como funciona uma blockchain: encadeamento de blocos, hash, e geração de um novo bloco a cada intervalo de tempo.

Intermediate Blockchain project completed in June 2025

A simple bitcoin-like cryptocurrency implementation

Udemy course - Blockchain & Cryptocurrency in Java

Blockchain Implementation in Java

Dependable Blockchain implementation for the subject of Highly Dependable Systems

🔗 Trust Certification System - Your Platform for Seamless Management and Issuance of Digital Certificates, Reinforced by Blockchain Technology for Ultimate Trust and Security. 🌐🛡️

This project demonstrates the working of Merkle trees in blockchain technology to ensure transparency and reliability in food traceability. It utilizes a distributed immutable digital ledger to securely store and verify critical data in supply chain management, particularly in agriculture and food industries.

Example of blockchain technology on simple banking transactions

Blockchain using Java. Java-based blockchain with mining and hashing.

[🏆2024 공개SW 개발자대회 라온시큐어 대표상🏆] Web3 전자지갑 시스템 : "Web 3.0 신원/자격증명 관리 시스템"

Final year project on Counterfeit Product Detection Using Blockchain Technology