{"repo":"gorunjinian/MetroVault","free":true,"listed":false,"github":"https://github.com/gorunjinian/MetroVault","clone":"git clone https://github.com/gorunjinian/MetroVault.git","description":"Offline & secure, feature-rich Bitcoin signing device / wallet app for Android","language":"Kotlin","stars":21,"topics":["bip39","bip85","bitcoin","cryptocurrency","signing-keys","bip32","bitcoin-wallet"],"license":"GPL-3.0","category":"blockchain-web3","readme_excerpt":"MetroVault Turn your Android phone into a secure Bitcoin hardware wallet and signing device --- MetroVault is a secure, offline Android signing device application designed to turn your Android phone into a cold storage hardware wallet. Built with modern Android technologies and a custom Kotlin Bitcoin library, it prioritizes security, simplicity, and user experience. Supports both single-sig and multi-sig (collaborative custody) wallets. Why MetroVault? The primary goal of MetroVault is to provide a completely offline environment for managing Bitcoin private keys. It acts as a signer for your watch-only wallets (like BlueWallet, Sparrow, or Electrum) running on online devices. By keeping your keys on a device that never connects to the internet (air-gapped), you significantly reduce the attack surface for theft and malware. Key Benefits: - 💰 Free - Use any Android phone as a hardware wallet - 🔒 Secure - Air-gapped operation with military-grade encryption - 🔨 Open Source - Fully auditable code, no hidden backdoors - 🎨 Modern - Beautiful Material 3 design with Jetpack Compose ✨ Features 🛡️ Security First Feature Description --------- ------------- Air-Gapped Operation Designed for devices with no internet (Airplane mode, WiFi/Bluetooth disabled) Dual-Layer Encryption AES-256-GCM with PBKDF2 (600k iterations) + Android Keystore Biometric Authentication Hardware-backed fingerprint/face unlock with crypto binding Plausible Deniability Separate \"Main\" and \"Decoy\" wallets with ","default_branch":null,"files":null,"tree":[],"storefront":"/r/gorunjinian","claimed":false,"request_supported":{"post":"https://gitbuyer.com/r/gorunjinian/MetroVault/request-supported","requests":0},"note":"indexed from public GitHub; nothing is for sale on this page. Clone it from GitHub. Paid listings live at /search."}