Creating watch-only wallets

We built Casa to protect our clients from every risk imaginable...including ourselves.

As we all know, trusted third parties are security holes. That's why Casa has never--and will never--claim to be one.

What is a watch-only wallet?

"Watch-only wallet" is primarily a bitcoin term, and is a way for users to monitor their balances and transactions safely, without the need to put funds at risk by connect private keys.

They are typically used for keeping an eye on cold storage funds or paper wallets, and they can be created using public keys without ever needing the private keys.  

Why do they matter?

As a Casa member, you can use a watch-only wallet to verify that the deposit addresses the Casa app is presenting to you are in fact generated from your keys. This provides added assurance that you're safe from a man-in-the-middle attack (e.g., a malicious code update misdirecting you to send funds to an address controlled by another party). These attacks are rare, and we do everything in our power to protect our clients from them. By following these guides, you can also verify this personally.

Creating a watch-only bitcoin wallet in Electrum

Creating a watch-only bitcoin wallet in Specter

How do I create a watch-only wallet for ethereum (ETH)?

Ethereum works much differently than bitcoin. In Casa ETH vaults, there is just a single address associated with your vault. Because of this, externally monitoring your address and its activity is a bit simpler in that you can simply look up the address. 

See also: Viewing your ETH transaction on Etherscan


Open source security is a team sport.

If you're worried about what could happen should Casa ever be compromised, unavailable, or under attack, that means you're thinking about your security the same way we do. Using open-source software like Electrum to verify your balances and receive addresses entirely outside of our systems helps maximize your personal sovereignty, and provides an important check on Casa. It's part of our "Can't Be Evil" design.

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