Stash

Stash captures full-page screenshots and embeds cryptographic proof directly into the image file. Every screenshot includes SHA-256 content hashes, an ECDSA P-256 digital signature, and an independent server-attested timestamp — making it verifiable and tamper-evident. What Stash captures: Full-page screenshots (scrolls and stitches automatically) SHA-256 hash of the raw pixel data SHA-256 hash of the page DOM at capture time ECDSA P-256 digital signature of all metadata Server-attested timestamp from an independent attestation server URL, page title, browser version, viewport dimensions HTTPS/HTTP security protocol status Portal-aware context extraction for construction management: Procore, Textura (Oracle), GC Pay, Trimble Pay, TeamPlayer Automatically detects logged-in user, company, and project Privacy-first: No accounts, no analytics, no tracking. Only hashes and domain are sent to the attestation server — never screenshots or personal data.