Explore AI, agents, blockchain and crypto through official sources, concrete tasks and practical guides.
Browse by purpose and evidence; use an exact name, ticker or addressable project domain to narrow the search.
Blockchain-CN is a Go-based blockchain node implementation that lets users run nodes, connect peers over TCP, and use HTTP endpoints to join peers, create blocks and inspect chain data.
Guide: Build and connect two local nodesBlockchain Attack Vectors is a community-contributed, repository-based directory of Web3 security vulnerabilities, with category-wise explanations of attack behavior, prevention and mitigation strategies, and applicable real-world exploit examples.
Guide: Submit a security reference contributionBlockchain Certification is an open-source JavaScript application for generating certificates and validating them through an Ethereum smart contract, with MongoDB in its server setup.
Guide: Set up the local development environmentBlockchain Demo is a self-hosted, browser-based educational demonstration of immutable ledgers, hashing, proof-of-work mining and public/private key concepts.
Guide: Set up Blockchain Demo with Node.jsBlockchain Dev Path is a Docusaurus documentation project that gathers learning resources for blockchain and dApp developers and supports community contributions to its documentation.
Guide: Run the documentation site locallyBlockchain Development Guide is a public educational resource that curates blockchain-development materials and offers commentary on how to approach them.
Guide: Choose a starting path for Ethereum data analysisBlockchain Ehr is an Ethereum-based healthcare records DApp where patients manage access to their profiles, grant or revoke doctor permissions, attach files stored on IPFS and review past consultations.
Guide: Set up the project locally
A free iOS read-only blockchain data application for exploring transactions, wallet addresses, blocks, balances and confirmations across 14 networks.
Guide: Use testnet exploration for transaction and block lookupBlockchain Medicalrecords is a JavaScript web application for managing medical records through Ethereum smart contracts, with repository instructions for a MetaMask-connected Rinkeby test-network workflow.
Guide: Set up the Rinkeby demo and start the appBlockchain Rust is an MIT-licensed Rust educational implementation of a simplified Bitcoin-style blockchain, organized as a series of learning steps and operated through a command-line interface.
Guide: Use the documented CLI operations
Blockchain to Bitcoin App is an iOS casual tap game in which players stack virtual blocks to create virtual blockchains, collect virtual Bitcoins and compete for high scores.
An iOS finance application combining crypto trading with wallet and DeFi-related services.
Guide: Set up the Blockchain.com mobile crypto walletBlockchainbay is a Python torrent-distribution application that uses an EVM-compatible blockchain as its listing database.
Guide: Install Blockchainbay and search its torrent catalogBlockchaindevelopmenttutorials is a public repository of blockchain development course materials.
Guide: Practice a tutorial using its architecture scaffoldBlockchainspider is an open-source Python and Scrapy toolkit for collecting on-chain transaction and block records, address or transaction labels, and address-centered transfer subgraphs into local CSV and JSON files.
Guide: Collect a bounded Ethereum block rangeBlockcore Wallet is an open-source, non-custodial wallet application for managing multiple wallets and accounts, identities, payment requests and transaction signing across supported blockchains.
Guide: Set up the wallet project and run Angular hot-reloadBlockfrost Python is an open-source Python 3 SDK for accessing the Blockfrost.io API, with examples for Cardano data, IPFS file operations and Secure Webhooks signature verification.
Guide: Install and configure the Python SDKBlocks is an open-source visual editor for creating Internet Computer smart contracts in Motoko. It uses drag-and-drop blocks, supports Motoko expressions, and includes workflows to compile, deploy and test contracts.
Guide: Set up Blocks for local development