What is a watch-only wallet?

A normal wallet holds a private key and can sign. A watch-only wallet holds only the public address, and that is enough, because anyone can read a public chain. Seeing and spending are separate permissions. This setup asks for the first one only.

People use it to check cold storage without plugging in the hardware wallet, or to follow someone else's money, like a fund treasury or a trader whose calls they track. It also shrinks the blast radius. An app that never holds a key cannot drain you by itself. If a read-only tool suddenly asks for a signature or an approval, treat that as a sign it has been compromised.

The cost is privacy. Every lookup means some server sees the address, whether that is an explorer API or an RPC node. The bigger question is whether the tool also keeps a list tying all your addresses together under your name and email. That list is worth more to an attacker than any single address.

Say your long-term bags sit on a hardware wallet and you trade from a browser hot wallet. Watch both addresses side by side and you see the whole position. The hardware wallet stays in the drawer.

Also called: watch-only address, view-only wallet, wallet tracker.

Paste a public EVM or Solana address into the Portfolio widget, or a 0x address into Perps positions (Add Hyperliquid positions in the command palette), and Cashboard starts reading. The address is all it gets. There is nothing to sign and no account that could link your addresses to each other. Share the board and the addresses stay behind.

• Portfolio
• Perps positions
• Net worth

• Public address
• Self-custody
• Portfolio tracker
• Seed phrase
• Connect wallet