Your seed phrase is a list of 12 or 24 words generated when you create a wallet. Anyone with these words owns your funds. Not your password. Not your wallet UI. The words.
What "never paste" actually means
- Never paste your seed phrase into a website, even one that looks legitimate.
- Never paste it into an AI assistant, including Claude. AI assistants log conversations.
- Never type it into your browser address bar by accident.
- Never store it in a password manager that syncs to the cloud. Cloud sync is a target.
- Never photograph it.
- Never read it out loud while screen-sharing.
What to do instead
Write the words on paper, twice, with a real pen. Store the two copies in two different physical locations. If you must store it digitally, encrypt the file with a passphrase only you remember.
A wallet asks for your seed phrase only once: when you first restore it on a new device. If anything else asks, it is a scam.