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Project Description: I am looking for an experienced full-stack developer (preferably with blockchain/DeFi knowledge) to create a high-quality, modern cryptocurrency price oracle scanner and monitoring platform, closely inspired by [login to view URL] — specifically the "BTC Oracle Scanner" tool. This site is not a full publishing oracle like Chainlink or Pyth (i.e., it does not need to push data on-chain initially), but rather a powerful real-time monitoring, deviation detection, latency tracking, and anomaly alerting dashboard that compares BTC/USD (and potentially other assets) prices across multiple sources: CEXs, oracles, DEXs, and wrapped/bridge tokens. Core Goal & Inspiration Replicate and improve upon the functionality of [login to view URL]: Real-time BTC/USD price pulling and comparison every few seconds Detection of price deviations (spreads), latency differences, and cross-type inconsistencies (CEX vs. DEX vs. Oracle vs. Bridge) Live alerts for significant anomalies or arbitrage/bridge opportunities Clean, dark-mode-friendly UI with live updating dashboard, spread matrix, and alert log Must-Have Features (MVP Scope – Phase 1) Real-Time Data Fetching & Aggregation Pull BTC/USD prices from 10–15+ reliable sources every 3–5 seconds via APIs/WebSockets Sources to include (at minimum): CEX: Binance, Coinbase, Kraken, Bybit, OKX Oracles: Pyth Network, CoinGecko (free tier), Chainlink feeds if accessible DEX/Aggregators: Uniswap (via DexScreener or subgraph), DeFi Llama API Bridge/Wrapped Tokens: WBTC (Ethereum), cbBTC (Base), BTC.b (Avalanche), tBTC, etc. — fetch via DeFi Llama or direct contract reads if possible Price Deviation & Latency Scanner Calculate percentage spreads/deviations between every pair of sources Measure and display API response latency for each source Highlight anomalies (e.g., >0.5% spread, high latency spikes) Pairwise comparison matrix/table (spread %, direction, suggested action like "Buy WBTC on Ethereum") Live Dashboard UI Modern, responsive, dark/light mode support (Tailwind CSS or similar preferred) Sections: CEX Prices, Oracle Prices, DEX Prices, Bridge Tokens Real-time updating cards with current price, latency, last update time Visual indicators: green/red for normal/anomaly, flashing alerts Live alert feed/log (timestamp + description, e.g., "Binance ↔ WBTC spread: 0.72% – potential arb") Alert System Configurable thresholds for deviation % and latency ms In-browser notifications + visual banners Optional: Email/Discord/Telegram webhook alerts (Phase 2) Additional Pages Documentation / API usage (how others can use your aggregated data if you expose an API) FAQ / About section explaining methodology, sources, limitations Responsive mobile design Technology Stack Recommendations (Flexible – suggest your preferred) Frontend: React.js / [login to view URL] 14+ (App Router), Tailwind CSS, TypeScript Backend: Node.js (Express/Fastify) or Python (FastAPI) Real-time Updates: WebSockets ([login to view URL]) or Server-Sent Events (SSE) Data Storage (optional for history): Redis (caching), PostgreSQL/MongoDB for logs API Integration: Axios/Fetch for polling, or WebSocket clients where available Deployment: Vercel (frontend), Railway/[login to view URL] for backend, or full Vercel if using [login to view URL] API routes Optional Bonus (Phase 2): On-chain integration (read from smart contracts via [login to view URL]), multi-asset support (ETH, SOL, etc.), user accounts, API endpoints for external dApps Nice-to-Have / Future Phases Support for multiple assets (ETH/USD, SOL/USD, etc.) Historical charts (price + spread over time) using [login to view URL] or Recharts Public API for developers to query your aggregated "best" price On-chain price push (become a mini-oracle yourself – requires Solidity dev) Multi-chain bridge monitoring expansion Budget & Timeline Expectations Please provide: Your estimated fixed price or hourly rate Timeline for MVP (dashboard + BTC monitoring) Any questions/clarifications about scope Examples of similar dashboards/tools you've built (especially crypto/DeFi related) Which parts of the stack you are strongest in I'm open to phased development (start with frontend + backend polling, then add real-time and alerts). Serious developers only — please include "BTC Scanner" in your proposal so I know you read this. Looking forward to your proposals! Thanks!
Projekt-ID: 40233147
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57 freelancere byder i gennemsnit $15.082 USD på dette job

I am a seasoned full-stack developer with comprehensive expertise in blockchain and DeFi environments, adept at building sophisticated real-time platforms. With extensive experience in JavaScript frameworks and a deep understanding of APIs and WebSockets, I am well-prepared to develop a modern cryptocurrency price oracle scanner. My background includes working on complex data aggregation applications, ensuring low-latency, high-availability systems, and implementing effective anomaly detection mechanisms. Leveraging technologies like React.js, Node.js, and WebSockets, I have previously created applications that efficiently handle real-time data feeds and provide analytics dashboards, which align perfectly with the project's goals. I am proficient in using Tailwind CSS for developing responsive, user-friendly UI components, and have a robust understanding of cloud deployment solutions on platforms such as Vercel. My experience also extends to using CI/CD pipelines to streamline development and deployment. I am keen to discuss your specific requirements and share my portfolio of related projects. Could you provide insight into potential future asset expansions? Thank you.
$18.000 USD på 90 dage
8,5
8,5

Hello, Are you interested in a cutting-edge cryptocurrency price monitoring platform before making any commitments? I specialize in developing real-time dashboards that aggregate data from multiple sources, ensuring users receive accurate price comparisons and alerts. Let's discuss how we can bring your vision for the BTC Oracle Scanner to life. Best, Smith
$15.000 USD på 7 dage
6,3
6,3

BTC Scanner I’ve built crypto dashboards before that pull and compare price data from multiple APIs and live-update every few seconds. A similar project involved aggregating on-chain and off-chain prices for DeFi tokens, handling latency and deviation alerts, and presenting a clean live dashboard. For your BTC oracle scanner, I’ll start by polling all your listed sources via WebSocket and REST APIs every 3–5 seconds. I’ll calculate spread percentages and latencies between sources in real time, flagging anomalies above your thresholds. The frontend will be React with Tailwind, designed for dark mode and responsive layout. To optimize performance, do you prefer WebSockets where available with fallback polling? Also, which alert channels should we prioritize first—browser alerts or webhooks (email/Discord/Telegram)? I can deliver a phased MVP with real-time data and alerting within 2–3 weeks, ready for you to test. Let’s get started building your BTC price monitoring and deviation scanner.
$10.000 USD på 7 dage
5,3
5,3

BTC Scanner I recently completed a comprehensive cryptocurrency payment processing system for PrestaShop that shares many technical similarities with your BTC Scanner requirements: **Real-Time Price Monitoring & Multi-Source Integration:** - Built a production-ready price service that aggregates BTC/ETH/BSC/Polygon/Arbitrum prices from multiple sources - Implemented real-time price deviation detection and tolerance monitoring (configurable -0%/+5% thresholds) - Developed WebSocket-based real-time communication system for live price updates - Integrated with multiple blockchain networks simultaneously with independent configuration per network **Advanced Blockchain Monitoring:** - Created Bitcoin watcher service with real-time transaction monitoring and confirmation tracking - Built multi-chain transaction watchers for Ethereum, BSC, Polygon, Arbitrum with block confirmation logic - Implemented health monitoring system that tracks API latency, connection status, and service availability - Developed automatic failover and reconnection mechanisms for blockchain node connections Please message me and let us start working, thanks
$15.000 USD på 21 dage
3,6
3,6

İstanbul, Turkey
Betalingsmetode verificeret
Medlem siden okt. 15, 2023
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