Your funds
Seed phrases: the twelve words that are your wallet
A self-custody wallet is backed by a list of twelve or twenty-four words. Whoever has those words has the wallet. How to store them, and the one rule that has no exceptions.
What a seed phrase is
When you create a self-custody wallet, it shows you a list of twelve or twenty-four ordinary words. That list is the master key: from it, the wallet and every coin in it can be recreated on any device. Your phone is replaceable; the words are not.
Write it down, offline
Write the words on paper in the right order and keep them somewhere safe and private, such as with important documents. Some people use a metal plate that survives fire and water. Do not photograph them, email them to yourself, or store them in cloud notes.
The rule with no exceptions
Never type your seed phrase into a website or give it to a person. No exchange, wallet provider or support agent will ever ask for it, and fourdigits never will either. Anyone asking for your seed phrase is trying to take your wallet.
Where fourdigits fits
Your fourdigits account has no seed phrase: it is protected by your password and authenticator. Seed phrases only matter for self-custody wallets you might send from or withdraw to. If you use one, its words deserve more care than any password you own.