Where to store your crypto seed phrase safely
Short answer: your main backup should be offline, written on paper or stamped into metal and kept somewhere only you can reach. If you also want a copy on your phone, keep it in an encrypted vault that never uploads it. Never put it in screenshots, email, cloud notes or chat messages.
Your recovery phrase (also called a seed phrase or mnemonic) is usually 12 or 24 words. Whoever has those words controls the wallet, from any device, without needing your password. That's why where you keep it matters more than almost any other security choice you make in crypto.
The two risks you're balancing
- Theft: someone else finds the words and empties the wallet.
- Loss: you lose the words, your device dies, and the funds are gone for good.
Most bad storage choices fix one risk by making the other worse. A single piece of paper in a drawer is hard to steal remotely but easy to lose in a move or a flood. A photo synced to the cloud is hard to lose but exposed to anyone who gets into your account.
Best: an offline backup
- Write the words by hand on paper, in order, numbered, with clear handwriting. Check every word against your wallet's word list.
- Consider a metal backup. Stamped or engraved steel plates survive fire and water far better than paper.
- Store it somewhere private and secure, like a home safe or a safe deposit box. Don't label it "crypto".
- Think about a second copy in a different place, so one fire or burglary can't wipe you out.
Avoid these
- Screenshots and photos in your camera roll. They sync to the cloud, show up in search, and appear when you scroll past them in front of someone.
- Email, messaging apps and cloud documents. Your words end up on servers you don't control, often for years.
- Regular notes apps. Most sync in a form the provider can read, and many people use weak passwords for their accounts.
- Any website or app that asks you to "verify" your phrase. Legitimate wallets never need it except when you're restoring. This is the most common scam in crypto.
If you want a digital copy too
Plenty of people keep a digital copy alongside the offline backup, for example while travelling or as a second copy. If you do, it should meet three conditions:
- Encrypted on your device with a strong passcode that you don't use anywhere else.
- Never uploaded to a company's servers or synced in readable form.
- Kept out of keyboard history. Some keyboards learn and suggest words you type. A good vault turns that off for its note fields.
A secure note that never leaves your phone
Olivenlock stores your recovery phrase in a note that's encrypted on your device with your own passcode. Nothing is uploaded, keyboard learning is switched off, and nobody can reset your passcode, including us.
A quick checklist
- At least one offline copy, written clearly and checked word by word
- Stored where fire, water and curious visitors can't reach it
- No screenshots, emails, chats or cloud notes containing the words
- Any digital copy encrypted on-device with a unique passcode
- Someone you trust knows how to find it if something happens to you