To back up your seed phrase safely, write the 12 or 24 words on paper (or stamp them into metal), store them offline in more than one secure place, and never take a photo, screenshot, or type them into any website. Your seed phrase is the master key to a non-custodial wallet — anyone who has it controls your funds, and if you lose it there’s no reset. Treat it like the most valuable thing you own, because it is.
Here’s how to do it right.
Why the seed phrase is everything
A seed phrase (recovery phrase) is the human-readable backup of your wallet’s private key. From it, the entire wallet can be restored on any device. That power cuts both ways: it’s your safety net if your phone is lost, and a total loss if someone else gets it. This is the responsibility side of self-custody.
What never to do
- Never screenshot or photograph it. Photos sync to the cloud and can be breached.
- Never type it into a website or “wallet checker.” That’s the classic phishing trap.
- Never store it in email, notes apps, or password managers you don’t fully trust.
- Never share it — no legitimate support will ever ask for your seed phrase.
Safe backup methods
- Paper, written by hand. Simple and offline. Store it somewhere safe from fire, water, and prying eyes.
- Metal backup. Stamp or engrave the words into steel to survive fire and flood — favoured for larger holdings.
- Redundancy. Keep two copies in separate secure locations so one disaster doesn’t wipe you out.
- Verify once. After writing it, confirm the words are correct and in order before relying on it.
Where to store it
- A home safe, a locked drawer, a safety deposit box — offline and access-controlled.
- Split strategies (part in one place, part in another) can add safety but also complexity; only do this if you’re confident you won’t lose a part.
Backups and crypto cards
If your card spends from a non-custodial wallet, your seed phrase backup protects the funds behind the card too. Keep only a working balance spendable and the rest safely backed up. For safety habits around the card itself, see how to secure or freeze your crypto card and are no-KYC crypto cards safe. For the full model, read the complete guide to virtual crypto cards.
FAQ
What if I lose my seed phrase? If you also lose device access, the funds are unrecoverable — there’s no reset. That’s why redundant backups matter.
Can I store it digitally? It’s strongly discouraged. Offline (paper/metal) is far safer than anything connected to the internet.
Will support ever ask for it? No. Anyone asking for your seed phrase is trying to steal your funds.
How many copies should I keep? At least two, in separate secure locations.
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