cryptax - Zero Knowledge Crypto Portfolio & Tax Tracker

Hey Product Hunt! 👋 I'm thrilled to launch Cryptax here today. Let me tell you why I built this. I've been a CISSP-certified security engineer for 20+ years, and I've watched the crypto tax space evolve with growing concern. Every platform I looked at required you to upload your complete financial history—every trade, every holding, every wallet balance—to their servers. As someone who's spent decades thinking about data breaches, subpoenas, and insider threats, I couldn't do it. So I filed my crypto taxes manually. Spreadsheets. Hundreds of transactions. Cost basis calculations at 2am. It was miserable. I kept thinking: "There has to be a better way. Why can't we do this client-side with proper encryption?" Turns out, we can. That's Cryptax. What makes it different: Your data never leaves your browser in plaintext. Everything is encrypted with AES-256. I literally cannot see your portfolio, even if I wanted to. Even if served a subpoena, all I have are encrypted blobs without the decryption keys. This is real zero-knowledge architecture, not marketing fluff. Right now, Cryptax: - Imports from 3 exchanges - Calculates cost basis (FIFO/LIFO) - Generates IRS Form 8949 - Tracks portfolio in real-time All locally encrypted What I'm working on: - More exchange integrations - Advanced tax-loss harvesting - Multi-year reporting - CPA collaboration features Early adopter deal: Free beta through Q1 2026, then 50% off forever for anyone who signs up now. I'd love your feedback, questions, and brutal honesty. What features matter most to you? What am I missing? Also happy to answer any technical questions about the encryption architecture—I'm a security nerd and love talking about this stuff. Thanks for the support! 🚀