Proof you can point to.

Preserve the truth of what you create — because memories fade, but proof doesn’t.

1) Create hash locally

Drop a file to compute its SHA-256 hash in your browser. Nothing leaves your device.

Choose File

Computed hash

This is the fingerprint we’ll save with your proof. Copy for your records (optional).

2) Buy & save proof

Checkout via Stripe (single, Starter, or Pro). On success we save your hash and generate your public verification URL.

Select plan

Billing cycle

Email (required for your receipt)

Filename (optional)

Display name (optional)