Lightweight Java and Android library for integration with Ethereum clients

An advanced Ethereum mobile wallet

A resilient Ethereum event listener that bridges your smart contract events and backend microservices

Hyperledger Fabric Contract and Chaincode implementation for Java

Signum Node

🔥🔥🔥 🚀 重复编码老瞎忙,⚡️写来写去那几行, 🌱 不知工具在何方?🍻 八哥智能一键帮!

sample project that illustrates how to create and deploy smart contracts, smart wallets, send transactions and observe processed transactions in ethereum using web3j, blockchain, solidity and spring boot

daml-on-sawtooth is an integration of the DAML smart contract runtime engine, created and open sourced by Digital Asset, with Hyperledger Sawtooth blockchain as the backing DLT.

Android web3j example

Balzac is a domain-specific language to write Bitcoin transactions.

Magician-ContractsTools is a toolkit for calling smart contracts , you can very easily call smart contracts in Java programs for query and write operations

SonarQube Analyzer for Solidity

Goals: Implement an Ethereum Smart Contract called SoccerManager and deploy it to Ethereum Blockchain running locally; Implement 2 Spring Boot BE applications, ethereum-api and player-api, that uses Web3j to communicate with Ethereum blockchain; Implement 2 React FE applications, ethereum-ui and player-ui, that communicate to their respective BE.

以太坊智能合约的部署

This repository contains following main modules: contract executor, wallet desktop, sc-api, api-client

智能合约Gradle编译插件

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.

Java framework to write tests for your dApps and other smart contracts on Waves blockchain

Source code of the Blockchain platform Erachain