xPrufy

xPrufy helps you securely capture, organize, verify, and preserve photo, video, and audio evidence on your Android device. Every capture includes cryptographic hashes, signed metadata, and timestamping support to help protect the integrity of your records. Back up, restore, verify, and export your evidence while keeping full control of your data. Your evidence stays in the app's private storage. No account is required. We do not operate servers that receive your media. Nothing is uploaded automatically—you control backups, exports, and sharing. CAPTURE • Capture photo, video, and audio evidence • GPS location and detailed capture metadata recorded with each file • SHA-256 file hashing and integrity verification • Signed metadata (Standard, Professional, or Device-Bound modes on supported Android devices) • Network timestamping and network time verification when services are available • Device integrity signals (such as root, emulator, and debugger awareness) recorded with captures ORGANIZE & REVIEW • Search, filter, and organize your evidence • Reliability indicators and integrity-focused metadata • Recycle Bin with retention before permanent deletion • Security log of important on-device events VERIFY & EXPORT • Verify file integrity against stored hashes • Verify All Files with a single action • Export with Proof (ZIP package with verification materials and PDF where applicable) • Plain file sharing for standard sharing workflows • Audit trail export (JSON) • Verification tools included with exported proof packages BACKUP & RESTORE • Local ZIP backups containing media, metadata, and recovery material • Restore your evidence on the same or another device • Efficient handling of large media files NETWORK TIMESTAMPING & TIME VERIFICATION During capture, xPrufy can create timestamp information when network services are available. Only cryptographic digests (hashes) are transmitted to timestamp services—never your photos, videos, or audio recordings. Supported technologies include: • OpenTimestamps (Bitcoin-based timestamp anchoring) • RFC 3161 timestamp authorities • Network time verification using NTP with HTTPS Date fallback No advertising SDKs, analytics SDKs, or crash-reporting trackers are included. PRIVACY & SECURITY • Panic Wipe to securely remove app data • Platform secure storage for cryptographic keys • On-device storage encryption for app data where supported • You decide what leaves your device through backup, export, or Android's share sheet WHO IT'S FOR xPrufy is designed for professionals, investigators, inspectors, field workers, businesses, and anyone who needs a structured way to capture and preserve trustworthy digital evidence without relying on cloud storage by default. IMPORTANT • xPrufy provides integrity verification through hashes, digital signatures, and timestamps. It is not legal advice, not a certification authority, and not a substitute for independent professional review where required. • You are responsible for complying with recording, consent, and privacy laws in your jurisdiction. • Users must be 18 years of age or older. • Blockchain-based timestamps publish only cryptographic hash fingerprints to public networks—never your media. Published hash fingerprints cannot be removed after confirmation. Requirements: An Android device with a camera and/or microphone as needed. Location and network features require the permissions you grant. Questions or privacy information: See the in-app Privacy & Data Policy. Support: [email protected]