Seed phrases

A “wallet” doesn’t actually hold your coins — the coins live on the blockchain. A wallet holds your keys. And behind every key is one thing you must protect above all else: your seed phrase.

One phrase, your whole wallet

When you create a wallet, it generates a seed phrase: usually 12 or 24 ordinary words, like “ripple lunar cactus …”. Those words ARE your money. From them, your wallet mathematically derives every private key, public key and address you will ever use. It follows a shared standard, so the same words restore your entire wallet in any compatible app — lose your phone, buy a new one, type the words back in, and your coins reappear.

Whoever has the words has the money

Anyone who has your phrase has total control; anyone without it cannot touch a single satoshi. That is the power and the danger of self-custody in one sentence — there is no bank to call, no “forgot password” link, no one who can reverse a mistake or a theft. The seed is the one thing you must never lose and never reveal.

Backing it up

Write the words down on paper, or better, stamp them into steel — fireproof and waterproof — and store that physically, ideally in more than one safe location. The whole security discipline around never letting the seed touch a connected device gets its own lesson at the end; for now, just hold onto the core idea: this short list of words is the master key to everything.

Your seed phrase is the single backup sitting behind every address and every coin you own. Guard it like the deed to your house — because, in every way that matters, that is exactly what it is.

From that one secret seed, your wallet spins out something you can share freely and safely — the addresses people use to send you coins. Next.

Key takeaways

Your wallet doesn’t hold coins — it holds keys, all derived from a 12- or 24-word seed phrase.
Anyone with the words controls the money; back them up on paper or steel, never digitally, and never reveal them.

Check yourself

What is a seed phrase?

If someone learns your seed phrase, they can:

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