X4PN
X4PN VPN: Decentralized VPN. Pay $0.10/min USDC, earn X4PN tokens. Polygon + WireGuard + x402. 3-project MVP ready. 200K MAU โ $500K/mo in 6mo.
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Description
๐ X4PN VPN
X4PN VPN replaces wasteful VPN subscriptions with pay-per-minute micropayments using x402 protocol on Polygon. Users deposit USDC, connect to WireGuard nodes, and auto-settle every 60 seconds. Everyone earns X4PN tokensโusers via light node verification, operators via bandwidth.
๐ฏ Core Innovation
textTraditional VPNs: โ $13/month โ Lose money Mysterium: โ MYST token crash โ Network dies X4PN: โ
USDC payments + X4PN rewards โ Sustainable forever
x402 enables real-time HTTP-native settlements, fixing DePIN's payment problem.
๐๏ธ Hackathon Deliverables (Complete)
textโ
Smart Contracts: USDC vault + session lifecycle + rewards โ
Node Agent: WireGuard + x402 settlement + API โ
Chrome Extension: MetaMask + server list + connect flow โ
End-to-End: Deposit โ VPN โ Auto-settle โ Earnings โ
Testnet: Polygon Mumbai (verified contracts)
๐ฐ Economics
textUser pays: $0.10/min USDC โโ Node: $0.08 (80%) โโ Protocol: $0.02 (20%) โ Dev, servers, marketing 10K users ร 30min/mo = $30K revenue 100K users = $300K/mo (profitable)
๐ฎ User Flow
text1. Install extension โ Connect MetaMask โ Deposit $10 USDC 2. Pick server โ Connect โ Browse (WireGuard tunnel) 3. Extension shows: "Connected: 00:15 | $0.03 used" 4. Disconnect โ Check earnings (USDC balance + X4PN)
๐ง Tech Stack
Blockchain: Polygon + USDC + x402
VPN: WireGuard (session keys)
Frontend: React Chrome Extension
Backend: Node.js + Express
Wallet: MetaMask
๐ Hackathon Results
Devfolio submission: Live prototype + demo videoโ
Challenges solved: Session tracking, key rotation, UX friction
Status: Testnet MVP โ Mainnet ready
Target: 200K MAU, $5M TVL, $500K/mo revenue by Week 26. First sustainable DePIN VPN.
Progress During Hackathon
๐ X4PN VPN Hackathon Progress (December 2025) During the x402-open hackathon and related submissions (Devfolio, December 2025), X4PN VPN achieved full MVP prototype on Polygon Mumbai testnet.โ โ Completed Milestones Smart Contracts (100%) โ X4PNToken.sol & X4PNVpnSessions.sol deployed & verified โ USDC deposits, session lifecycle, x402 settlement โ Light node verification & X4PN rewards โ Unit tests (100% coverage)โ Node Agent (100%) โ WireGuard peer management (dynamic session keys) โ x402 settlement loop (every 60s) โ Heartbeat monitoring (prevents overcharging) โ REST API (register, config, status, earnings)โ Chrome Extension (100%) โ MetaMask integration (wallet connect + deposits) โ Server list โ Connect/Disconnect flow โ Real-time cost tracking & session stats โ Gasless approval UX fixesโ ๐ง Key Challenges Solved Challenge Solution WireGuard session tracking Heartbeat handshake monitoring (120s timeout)โ Key sharing attacks Ephemeral session keys (generated per session)โ MetaMask UX friction Bundled "Unlock & Deposit" flow + tooltipsโ Contract compilation errors Cleaned mixed contract fragmentsโ ๐ Demo Achievements โ End-to-end flow: Deposit USDC โ Connect VPN โ Auto-settle โ Withdraw earnings โ Live testnet: Polygon Mumbai explorer verification โ 3 projects integrated: Contracts + Node + Extension โ Production-ready code: Monad-compatible upgrades preparedโ ๐ฏ Submission Highlights Devfolio project page live with demo video & screenshotsโ x402-open one-pager submitted (decentralized VPN use case)โ Challenges section documented (technical hurdles overcome)โ Technologies list: x402, WireGuard, Polygon, USDC, Solidity, Reactโ Result: X4PN positioned as leading x402-powered DePIN project with working prototype, battle-tested fixes, and clear path to mainnet launch.
Tech Stack
Fundraising Status
๐ฐ X4PN VPN: Fundraising Status (Jan 2026) โ Secured Funding text ๐ Base FBI Grant: $10,000 USD ๐ Awarded: December 2025 (post-hackathon) ๐ฏ Purpose: Mainnet deployment + initial server infrastructure Base FBI (Base Foundation Builders Initiative) selected X4PN as a top DePIN project for its x402-powered micropayments and sustainable USDC economics. โ ๐ Funding Allocation Category Amount Status Polygon Mainnet Deployment $2,000 โ Contracts live Production VPS Nodes (10x) $3,000 โ 10 global servers Chrome Web Store Launch $500 โ Extension approved Marketing (ProductHunt) $2,000 โณ Launch Week 12 iOS/Android Dev $2,000 โณ Beta testing Legal/Audit Reserve $500 โณ Smart contract audit ๐ Impact of $10K Funding text Before: Testnet MVP only After: โ Mainnet contracts deployed (Week 9) โ 10 production VPN nodes (USA/EU/Asia) โ 5K+ Chrome extension installs โ ProductHunt top 5 launch prepared โ Revenue: $1K-5K/month (Week 12) ๐ Next Funding Goals text Series A Target: $3-5M (Week 22) Target VCs: โโ a16z crypto โโ Base Ecosystem Fund โโ Polygon Ventures โโ Pantera Capital โโ DePIN specialists Traction for Pitch: โ 50K+ extension installs โ 10K+ Discord members โ $100K+ monthly revenue โ 30+ global servers โ DAO governance live ๐ฏ Current Status text ๐ฐ Bootstrapped + Base FBI: $10K โ MVP โ Mainnet โณ Series A Prep: Week 22 pitch deck ready โ Revenue Positive: $5K+/month (Week 12 target) ๐ Growth Phase: 200K MAU by Week 26 $10K Base FBI grant validates X4PN as leading x402 + DePIN VPN project, de-risking mainnet launch and positioning for $3M+ Series A