Prosopo is a privacy-focused, self-hosted CAPTCHA alternative that provides multiple challenge types—image selection, puzzle (image jigsaw), proof-of-work, and frictionless (behavioral bot detection). The system comprises an Express-based provider API (with MongoDB and Redis for persistence and caching), a CLI for administrative tasks, client-side embeddable widgets (vanilla JS bundle, React/Angular/Vue/Svelte wrappers), and a suite of supporting libraries for cryptography, locale, datasets, and native Rust modules (JA4 TLS fingerprinting, Merkle tree acceleration, puzzle rendering). Bot detection is multi-layered: client-side behavioral data (mouse/keyboard/touch events, SIMD readings) is collected and server-side scored, combined with JA4 TLS fingerprint analysis, IP reputation (ipapi.is + MaxMind), DNS asymmetry detection, spam email heuristics, and custom decision machines per site key. The architecture is a monorepo with ~70 workspaces, leveraging Vite for bundling, Vitest for unit/integration tests, and Cypress for E2E visual regression testing. The provider enforces access policies (allow/block/restrict) via a Redis-backed rules engine and maintains usage counters for rate limiting. Asset sealing (AES-256-GCM) protects image CDN URLs, and puzzle difficulty is sampled with a CSPRNG-stratified ladder to frustrate solver calibration.
This repository contains a cross-platform mobile application for monitoring Ethereum 2.0 validator performance and machine metrics. Built with Ionic Framework and Angular, it provides a dashboard for tracking validator balances, rewards, effectiveness, and machine resource utilization (CPU, memory, disk, network). The application features integration with the beaconcha.in API for blockchain data, local storage synchronization via a custom Capacitor plugin (storage-mirror), and supports advanced features such as Rocketpool integration, multi-currency display, and configurable notifications. The architecture follows a modular, lazy-loaded pattern with distinct feature modules for validators, dashboard, preferences, and machine monitoring. Notable reusable components include the storage-mirror Capacitor plugin for cross-platform data sharing between the app and home screen widgets, and an InfiniteScrollDataSource utility for efficient paginated data loading using RxJS. The application is actively maintained and demonstrates strong engineering practices in its modular design and separation of concerns. However, the application's reliance on external APIs (beaconcha.in, Firebase, Coinbase, GitHub) and platform-specific native plugins introduces maintenance overhead and potential points of failure. The feature-rich nature of the application also increases complexity, though the core architecture remains sound.
This repository is the Tonhub Wallet, a non‑custodial mobile cryptocurrency wallet for the TON blockchain with additional Solana support. It is a full‑featured wallet that supports multi‑account management, token transfers (jettons), staking (liquid staking, native pools), hardware wallet integration (Ledger), a dApp browser using TonConnect v2, and financial products such as the Holders card program and Changelly exchange. The application also includes an AI chat assistant for transaction markup and operations, push notifications via Firebase, and deep‑link navigation for seamless URL handling. Built using React Native and Expo, the codebase is structured around a fragment‑based screen architecture, with custom hooks and React Query for data fetching, Recoil for state management, and a centralized query key factory. Despite its breadth, the codebase exhibits well‑defined separation of concerns with reusable UI components (e.g., ItemButton, RoundButton, WImage) and data patterns (e.g., batched metadata fetching, structural sharing for transaction lists). However, there are signs of technical drift, such as hardcoded endpoints, some deprecated library usage, and platform‑specific native modules that require ongoing maintenance.
Repository is a production Android application for Mixin Network, combining a cryptocurrency wallet with a messenger. It integrates with Mixin API (api.mixin.one) and Blaze messaging, supports transfers, swaps, web3 trades, perps, fiat money, and market analytics. The app is built with Kotlin, uses MVVM with ViewModels and Flows, Room for persistence, and a mix of Jetpack Compose and legacy View-based UI. A separate query-codegen Gradle module generates type-safe query code, and release automation includes Fastlane, Docker build box, and APK signature verification.