Your symmetric record of what you signed up for.
Subscription vendors keep structured logs of every signup. You keep a vague memory. ColdStamp is the user's side of that record — it warns about pre-ticked boxes and buried renewal terms before you click, then quietly keeps your own evidence of what the page showed and what you agreed to.
How it works
ColdStamp is a Chrome extension. On checkout pages it does two things:
- Warns you — a small corner panel flags pre-ticked recurring charges, buried renewal terms, totals that don't add up, and guilt-trip decline buttons. Five deterministic detectors, conservative on purpose: we'd rather miss a dark pattern than cry wolf.
- Keeps your own record — when you click the primary button, it snapshots the page state, redacts your card details, hashes the result, and stores it locally on your device. Nothing leaves the browser.
What it isn't
- It does not file disputes for you.
- It does not connect to your bank or card.
- It does not cancel subscriptions.
- It does not transmit any data over the internet.
Status
Currently in private preview. Heading to the Chrome Web Store soon.