Seed Phrase Hygiene

Twelve or twenty-four words are the whole ballgame. The people who lose bitcoin skip the basics on this page.

Your recovery phrase is your bitcoin. Anyone who reads it can take everything; if it’s destroyed and your device dies, no one on earth can bring the coins back. An estimated 3–3.5 million BTC — well over a tenth of all bitcoin that will ever exist — is already permanently lost, overwhelmingly to casual phrase storage. Both failure modes are permanent. Both are fully preventable.

The non-negotiables

Never digital. No photos, no cloud notes, no password managers, no email drafts, no typing it into any computer or phone — ever. Digital copies are what phrase-hunting malware exists to find.

More than one copy, more than one place. The classic loss story is a single paper copy in the house that flooded. Two copies, two locations, each secured like the cash equivalent.

Exact and legible. Word order matters; spelling matters. Print letters, number the words 1–24, and double-check against the device screen before you confirm setup.

Every seed-phrase disaster starts the same way: “it was just easier to…”

Paper now, steel soon

Paper is fine for day one and wrong for year ten — it burns at roughly 230°C and dissolves in water. Stamped or engraved stainless-steel backups survive house fires (laboratory tests run past 1,350°C), floods, and decades of neglect for the price of a dinner. When you upgrade to steel, verify every word as you stamp it — then the paper copy gets destroyed, not filed.

The scams to expect

Burn this rule in: no legitimate wallet, company, support agent, or app will ever ask for your phrase. The request is the scam — fake support calls, lookalike wallet apps, “wallet validation” sites, “synchronize your wallet” popups. The words go into exactly one thing: a hardware wallet you are deliberately restoring, with your own hands, on purpose.

Test it — the dry run

A backup you’ve never tested is a hope, not a plan. Once a year: wipe a device (or use a spare), restore from your written words, and confirm the balance appears. When the dry run succeeds you know the words are right, the order is right, and you’ve rehearsed the scariest moment in custody while the stakes were zero.

Common worries, answered

“What if someone finds my written phrase?” They’d need to know what it is and reach it — which is why it’s stored like cash, not labeled “BITCOIN” on the fridge.
“What if I die with it hidden too well?” That’s a real failure mode — it’s why the inheritance guide exists.
“Should I split the phrase in half across locations?” No — DIY splitting schemes cause more losses than they prevent. Two complete, well-hidden copies beat clever fragments.