Masenu Edge Hasher offline · zero-custody

Turns your raw fraud CSV into API-ready hashed JSON — entirely inside this page. Nothing is uploaded, stored, or transmitted: a strict Content-Security-Policy blocks all network access (prove it: turn Wi-Fi off, it still works). Close the tab and everything is gone.

The pepper is what makes your hashes match the rest of the network. It is delivered to your organisation once, out of band — never email it, never commit it. Local testing against a dev stack uses that stack's dev pepper.

Drop your CSV here or click to choose a file
Excel: File → Save As → CSV (UTF-8). Columns: fraud_type, confidence, occurred_at, amount_ghs, phone, wallet, mule_wallet, bank_account, ghana_card, device, email, narrative

Masenu Edge Hasher v1 · single file · auditable in one read · HMAC-SHA256 via your browser's built-in WebCrypto · matches scripts/hash_batch.py byte-for-byte