Showing 57 open source projects for "contract"

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  • 1
    bitcoinj

    bitcoinj

    A library for working with Bitcoin

    bitcoinj is a library for working with the Bitcoin protocol. It can maintain a wallet, send/receive transactions without needing a local copy of Bitcoin Core and has many other advanced features. It's implemented in Java but can be used from any JVM compatible language, examples in Python and JavaScript are included. Highly optimized lightweight simplified payment verification (SPV) mode. In this mode, only a small part of the blockchain is downloaded, making bitcoin suitable for usage on...
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  • 2
    Token swap from an ERC20 testnet token to Sepolia ETH using Nethereum and a token smart contract
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  • 3
    Mythril

    Mythril

    Security analysis tool for EVM bytecode. Supports smart contracts

    ...It uses symbolic execution, SMT solving and taint analysis to detect a variety of security vulnerabilities. It's also used (in combination with other tools and techniques) in the MythX security analysis platform. If you are a smart contract developer, we recommend using MythX tools which are optimized for usability and cover a wider range of security issues. The SWC Registry is a community catalog of known smart contract vulnerabilities with detailed descriptions, code samples, and remediations. MythX uses the SWC Registry as its database when scanning smart contracts for security issues.
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  • 4
    -PTRN--Petoron--token
    Petoron (PTRN) it’s a fixed-supply ERC-20 cryptocurrency built to support the open-source Petoron cryptography ecosystem. Contract Details: - Ethereum Mainnet - Contract: 0xCe675D637bB5E3aDAFDC4d1e475a35D75F6D95bc - Total supply: 20,000,000 PTRN - Treasury: 0x31187017dC243d4D46126bB5a160Bb98FFeef39b Petoron is an entire cryptography ecosystem developed to give people real tools for privacy and data protection: - 🔐 PTBC — Petoron Time Burn Cipher (time-based self-destructing encryption) - 📜 PSC — Petoron Seal Contracts (tamper-proof sealed data) - 📦 PCA — Petoron Crypto Archiver (secure archiving) - 🧹 PLD — Petoron Local Destroyer (irreversible deletion) - ⚛️ PQS — Petoron Quantum Standard (quantum-resistant encryption) - 💬 P2P Messenger — fully encrypted peer-to-peer communication https://github.com/01alekseev/-PTRN--Petoron--token
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  • 5
    ZoKrates

    ZoKrates

    A toolbox for zkSNARKs on Ethereum

    ...One particular family of ZKPs is described as zero-knowledge Succinct Non-interactive ARguments of Knowledge, a.k.a. zkSNARKs. zkSNARKs are the most widely used zero-knowledge protocols, with the anonymous cryptocurrency Zcash and the smart-contract platform Ethereum among the notable early adopters. Ethereum runs computations on all nodes of the network, resulting in high costs, limits in complexity, and low privacy. zkSNARKs have been enabling to only verify computations on-chain for a fraction of the cost of running them, but are hard to grasp and work with.
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  • 6
    TypeChain

    TypeChain

    TypeScript bindings for Ethereum smart contracts

    TypeChain generates only TypeScript typings (d.ts) files, if you're looking for "opinionated", "batteries included" solution check out our new project: eth-sdk. It generates typesafe, ready to use ethers.js wrappers and uses etherscan/sourcify to automatically get ABIs based only on smart contract addresses. Under the hood, eth-sdk relies on TypeChain. Interacting with blockchain in Javascript is a pain. Developers need to remember not only a name of a given smart contract method or event but also it's full signature. This wastes time and might introduce bugs that will be triggered only in runtime. TypeChain solves these problems (as long as you use TypeScript). ...
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  • 7
    Truffle

    Truffle

    A tool for developing smart contracts. Crafted with the finest cacaos.

    The most comprehensive suite of tools for smart contract development. Quickly build, test, debug, and deploy using the Truffle CLI. Write scripts and plugins to automate common processes. Interact directly with the blockchain using the Truffle console. Write tests in Solidity, JavaScript, and TypeScript. Truffle will manage your entire workflow. Get a deeper understanding of transactions with the Truffle debugger.
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  • 8
    Awesome Algorand

    Awesome Algorand

    Curated list of awesome resources related to the Ⱥlgorand Blockchain

    A curated list of awesome resources related to the Algorand Blockchain. Algorand is an open-source, proof-of-stake blockchain and smart contract computing platform. You can enhance your experience by interacting with the AI chatbot available at AwesomeAlgo Search. It's designed to answer any questions you might have regarding resources in this repository.
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  • 9
    Create Eth App

    Create Eth App

    Create Ethereum-powered apps with one command

    Create Ethereum-powered apps with one command. Create Eth App works on macOS, Windows, and Linux. If you've previously installed create-eth-app globally via yarn global add create-eth-app, we recommend you uninstall the package using yarn global remove create-eth-app and use the yarn create eth-app shorthand to ensure that you use the last version. When you’re ready to deploy to production, create a minified bundle with yarn run react-app:build. You’ll need to have Node 14 or later version...
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  • 10
    web4

    web4

    Web4 is a new way to distribute decentralized apps

    Web4 is a new way to distribute decentralized apps. Deploy a single WASM smart contract to deploy the whole web app. You only need to deploy a single smart contract using WebAssembly to host your app's HTTP backend, static resources, and blockchain logic. There is an HTTP gateway to NEAR blockchain which allows smart contract to handle arbitrary GET requests. Every smart contract on NEAR also gets a corresponding API endpoint which can be accessed through regular HTTP requests. ...
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  • 11
    Diem

    Diem

    Blockchain project originally backed by Meta

    Diem is the now-discontinued blockchain project originally backed by Meta (formerly Libra), built in Rust using the Move smart contract language. Designed for secure, programmable payments and asset management, its open‑source code was released under Apache 2.0. Although the network was never launched, the project remains an important foundation for Move-based ecosystems.
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  • 12
    Token Airdrop

    Token Airdrop

    Create Your Token Airdrop and Collect Fees

    Create Your Token Airdrop and Collect Some Money, Increase your token holders by distributing small amount from your token to 1000's of holders, also you can collect fees. Follow this steps: 1- create airdrop contract: https://0xfactory.com/airdrop-contract 2- choose your preferred theme : https://0xfactory.com/airdrop-ui Demo: https://airdrop-ai.demo.0xfactory.com 3- edit the file "data.json" using any text editor and save 4- upload all the files to your hosting That is all.... Good luck
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  • 13
    Remix IDE

    Remix IDE

    Browser-based compiler and IDE

    Remix IDE is an open source web and desktop application. It fosters a fast development cycle and has a rich set of plugins with intuitive GUIs. Remix is used for the entire journey of contract development as well as act as a playground for learning and teaching Ethereum. Remix IDE is part of the Remix Project which is a platform for development tools that use a plugin architecture. It encompasses sub-projects including Remix Plugin Engine, Remix Libs, and of course Remix-IDE. Remix IDE is a powerful open source tool that helps you write Solidity contracts straight from the browser. ...
    Downloads: 9 This Week
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  • 14
    solgraph

    solgraph

    Visualize Solidity control flow for smart contract security analysis

    Visualize Solidity control flow for smart contract security analysis. Generates a DOT graph that visualizes the function control flow of a Solidity contract and highlights potential security vulnerabilities. A nice example of piping contract source that is in your clipboard through solgraph, dot, and preview: (Use whatever image previewer is available on your system; Preview.app is available on Mac) You have to have graphviz installed (brew install graphviz) to render the DOT file as an image. ...
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  • 15
    Protocol Labs - Retriev

    Protocol Labs - Retriev

    Home of Retriev protocol (by CryptoNet + YOMI)

    Retriev is a Protocol designed by CryptoNetLab and developed by YOMI that allows end users to create retrieval deals with a subset of IPFS providers. It leverages a reliable system of “missed retrieval” penalties that increases confidence in decentralized storage networks. If you want to go deeper on how the protocol works please read our light paper.
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  • 16
    Devault

    Devault

    Decentralized alternative to proprietary and centralized cloud storage

    A Blockchain-based, self-hosted, and end-to-end encrypted cloud storage. Devault is a decentralized, self-hosted, and end-to-end encrypted alternative to proprietary and centralized cloud storage. The file gets encrypted using AES-256-CBC encryption. The encrypted file is split into pieces. The chunks are distributed across the network nodes. The root hash will be stored in your wallet on the blockchain.
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  • 17
    Smart Contract Sanctuary

    Smart Contract Sanctuary

    A home for ethereum smart contracts

    A home for Ethereum smart contracts verified on Etherscan. This is the index repository for the smart contract sanctuary. Bookmark this repo. Chain-specific sub-repos and the index are updated twice a day. Expect a full, recursive check-out to take 2GB+ disk space. Existing repository but submodules never initialized - checkout submodules and update all chain-specific sub repositories. Contains smart contract sources for various networks, grouped by the first two chars of the contract address. ...
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  • 18
    Ambire Wallet

    Ambire Wallet

    Making self-custody easy and secure for the EVM ecosystem

    ...The platform supports Ethereum and most EVM-compatible networks, allowing users to manage assets, interact with decentralized applications, and perform cross-chain operations from a unified interface. Built around smart contract wallet technology and account abstraction concepts, it enables features such as transaction batching, key rotation, multisignature support, and stablecoin gas payments. The project prioritizes usability by reducing common friction points associated with traditional crypto wallets while still preserving user ownership and privacy. ...
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  • 19
    Dapp tools by DappHub

    Dapp tools by DappHub

    Dapp, Seth, Hevm, and more

    Command line tools and smart contract libraries for Ethereum smart contract development. All you need Ethereum development tool. Build, test, fuzz, formally verify, debug & deploy solidity contracts. Ethereum CLI. Query contracts, send transactions, follow logs, slice & dice data. Testing-oriented EVM implementation. Debug, fuzz, or symbolically execute code against local or mainnet state.
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  • 20
    ERC-721 Token

    ERC-721 Token

    The reference implementation of the ERC-721 non-fungible token

    This is the complete reference implementation of the ERC-721 non-fungible token standard for the Ethereum and Wanchain blockchains. It is also compatible with other EVM compatible chains like Binance Smart Chain (BSC), Avalanche (AVAX) etc. This is an open-source project, complete with Hardhat testing. The purpose of this implementation is to provide a good starting point for anyone who wants to use and develop non-fungible tokens on the Ethereum and Wanchain blockchains. Instead of...
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  • 21
    Hyperledger Burrow

    Hyperledger Burrow

    A permissioned Ethereum smart-contract blockchain node

    Hyperledger Burrow is a permissioned Ethereum smart-contract blockchain node. It executes Ethereum EVM and WASM smart contract code (usually written in Solidity) on a permissioned virtual machine. Burrow provides transaction finality and high transaction throughput on a proof-of-stake Tendermint consensus engine. Burrow is a fully-fledged blockchain node and smart contract execution engine -- a distributed database that executes code.
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  • 22
    WaykiChain

    WaykiChain

    Public Blockchain as a Decentralized Finance Infrastructure Service

    WaykiChain is a high-performance, Turing-complete blockchain platform optimized for decentralized applications and smart contracts. It offers a delegated proof-of-stake (DPoS) consensus mechanism for faster transactions and energy efficiency, and it includes support for DeFi, stablecoins, and governance tools. Designed for commercial-grade use, WaykiChain enables developers to build scalable dApps while offering low-latency transaction processing and customizable consensus rules. It...
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  • 23
    DemocracyEarth Wallet

    DemocracyEarth Wallet

    Censorship resistant democracies

    ...No servers or databases are used. Control your identity with any Ethereum wallet. Contribute to the success of UBI and Proof of Humanity by leveraging ETH. Keep ETH or DAI in our smart contract vaults and help burn UBI tokens using yield. Half the yield is used to buy UBI. UBI is then burned, reducing its supply. No biometrics or real names are required. Just a quick video that proves your humanity. Audit any profile without permission. Challenged profiles go to a Kleros court. UBI is a Universal Basic Income token that gets streamed using Ethereum to verified Proof of Humanity profiles. ...
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  • 24
    0x Monorepo

    0x Monorepo

    0x protocol monorepo - includes our smart contracts

    0x protocol monorepo, includes our smart contracts and many developer tools. 0x is an open protocol that facilitates the trustless, low-friction exchange of Ethereum-based assets. For more information on how it works, check out the 0x protocol specification. This repository is a monorepo including the 0x protocol smart contracts and numerous developer tools. Each public sub-package is independently published to NPM. Visit our developer portal for a comprehensive list of core &...
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  • 25
    Embark

    Embark

    Framework for serverless Decentralized Applications using Ethereum

    Embark is a platform that enables easy development and deployment of decentralized applications. Build, test, and deploy your Smart Contracts without the hassle. Embark takes care of the groundwork, watches for changes, and redeploys your application when needed. Testing shouldn't be an afterthought. Embark makes debugging and testing first-class citizens of your development workflow. Pick and choose which features, plugins and tools you want to integrate with. Embark is built with...
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