> ## Documentation Index
> Fetch the complete documentation index at: https://bundlezeus.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# Your Keys and Wallets, Explained Simply

> Your token's owner key never leaves your browser. Your buyer wallets get an encrypted backup so you can recover them.

BundleZeus is **non-custodial** — a fancy word that means we never hold your money, and your token's owner key never leaves your browser. Here's exactly how it works, including the one thing that *is* saved to our servers, and how to stay safe.

## How your keys are handled

<Steps>
  <Step title="Wallets are made in your browser">
    When the app creates your buyer wallets, it makes them right on your device. The keys are created in your browser — not on our servers.
  </Step>

  <Step title="Everything is signed on your device">
    Every step of your launch — funding, turning on trading, and each buy — is approved (signed) on your device. What gets sent out is the finished, signed transaction, which is safe to send. It proves you approved it without ever revealing your key.
  </Step>

  <Step title="The server only gets signed transactions">
    To launch, our servers receive your signed transactions and public info (token address, network, amounts) — your **token owner key** is never sent. The only exception is the encrypted backup of your *buyer wallets*, described below (never your owner key).
  </Step>
</Steps>

## Where your work is kept

* Your working keys and draft live in your browser only, and are **wiped when you close the tab**.
* Harmless settings (token address, amounts, network — never keys) can sync across your devices so you can pick up where you left off.
* Signing in uses your wallet or a simple device key. No email, no password.

## Backups of your buyer wallets

Losing 95 wallets would hurt, so BundleZeus gives you two safety nets:

1. **Download a backup file** — a file with your wallet list (and keys) that you keep. Store it somewhere safe and offline.
2. **Encrypted backup** — made **automatically** when your wallets are created. A scrambled (encrypted) copy of your buyer wallets is saved to your BundleZeus account so you can get them back from another device. This is the one place buyer-wallet keys leave your browser. Since it's recoverable, treat it like any cloud backup — handy, but download your own file too if you want to be the only one who has them. Your **token owner key is never part of this backup**.

<Warning>
  **Your token owner key is on you.** BundleZeus never stores it. If you lose it, nobody — including us — can get control of your token back.
</Warning>

## What this protects you from

* **Server hacks** — your owner key is never on the server, and the wallet backups are stored only as scrambled data, not usable keys
* **Us running off with your funds** — we never take control of your token or its owner key; we can't launch, give up ownership, or change your token without you
* **Phishing** — because you approve every transaction in your own browser, you can check each one before you say yes

## Stay-safe checklist

* Download your wallet backup file and keep it offline
* Never paste your owner key anywhere except the real BundleZeus app
* Double-check you're on the real `bundlezeus.com` before entering any key
* Remember your browser clears everything when you close the tab — back up first

## Learn more

<Card title="Fund wallets safely" icon="coins" href="/guides/fund-wallets">
  How funding works, including stealth funding that hides the link between your wallets.
</Card>