Ledger LandISSUE #43 of 90

seed phrases · bip-39 mnemonics

BlockyVSDouble-Spend Dan

Blocky saysA seed phrase (BIP-39) is 12–24 words that back up your entire wallet.

Modern wallets derive all their keys from one seed phrase — 12 to 24 words from a fixed wordlist (BIP-39). Whoever has the phrase has the wallet. Write it on paper, store it offline and redundantly, and never type it into a website or share it — every "support agent" asking for it is a scammer. Lose it with no backup, and the funds are gone forever.

Power-ups you unlock

12–24 words back up the whole wallet
BIP-39 standard wordlist
Anyone with the phrase controls the funds
Never type/share it; back up offline

Double-Spend Dan attacks — common mistakes

Storing the seed phrase digitally/online
Entering it on any website
No redundant offline backup

Boss battleList three rules for storing a seed phrase safely.

Example code

<!doctype html><html><head><meta charset="utf-8"></head>
<body style="background:#06040d;color:#e6e0ff;font-family:monospace;padding:20px"><pre>seed: "ripple lunar ... 12-24 words"
= your whole wallet
write on paper · offline · never share/type online</pre></body></html>

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