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Glossary

What is Seed Phrase? Beginner

A seed phrase is a list of ordinary words, usually 12 or 24 of them, that a wallet generates when you first set it up. Those words can rebuild every private key in that wallet on any compatible device. That makes the phrase the wallet itself: whoever holds the words controls the funds, permanently and without appeal.

The words come from a fixed dictionary defined by the BIP-39 standard, which is why different wallet makers can restore each other's backups. Order matters as much as spelling. From that single phrase a wallet derives every key and every address it will ever show you, which is why one short backup can stand in for an entire portfolio.

Say the important part plainly: <strong>the seed phrase is the money</strong>. Anyone who reads it can restore your wallet on their own device and empty it in seconds, from anywhere in the world, without needing your phone, your PIN or your permission. There is no freeze, no reversal and no support desk. This is the one secret in crypto with no second layer behind it.

So keep it away from every screen and every network. Write it on paper or stamp it into metal, check each word twice, and store copies in more than one safe physical place. Do not photograph it, do not type it into a computer, phone, spreadsheet, note app, password manager, email or chat, and never enter it into a website. Our <a href="/toolkit/how-to-back-up-a-seed-phrase/">backup walkthrough</a> sets out a careful routine.

Nobody legitimate ever asks for it. Not wallet developers, not exchange support, not a helpful stranger in a group chat, not a "wallet validation", "synchronisation" or "migration" page, not an airdrop claim form, and not the CoinCrafty editorial desk, which will never ask you for a seed phrase under any circumstances. Every single request is theft in progress; our <a href="/toolkit/how-to-spot-crypto-scams/">scam-spotting guide</a> shows how these approaches are dressed up.

One practical footnote. A backup you have never verified is a guess, so restore it onto a spare or reset device before it is guarding anything you care about. And treat any phrase that has ever touched a screen, a photo or a cloud service as compromised: generate a fresh wallet and move the funds across.

Learn this in The Foundation

What Is a Crypto Wallet? Keys, Not Coins

Key takeaways

  • Anyone who reads your seed phrase can drain the wallet immediately, so protect the words the way you would protect the entire balance.
  • Keep the phrase off every screen and every network: no photos, no cloud notes, no password managers, no typing it into any site or app.
  • No exchange, wallet maker, support agent, giveaway or publication will ever need your seed phrase, and CoinCrafty never will.

Seed Phrase — frequently asked questions

Support asked me to enter my seed phrase to fix my wallet. Is that normal?

No. It is a scam every time, without exception. Real support can help with an app, a fee or an address, and none of that requires your recovery words. The request may arrive by email, in a chat reply, through a pop-up, or from an account using a company's exact name and logo. Stop, do not type the words anywhere, and walk away.

What should I do if I have lost my seed phrase?

If your wallet still opens on your device, act straight away: create a brand-new wallet, back up its fresh phrase properly offline, and move the funds to it. The old phrase then no longer matters. If the wallet is already gone and the phrase with it, the funds cannot be recovered by anyone, and any service promising otherwise is a scam.

This definition is educational and not financial advice. Crypto is volatile and high-risk — always do your own research.
Keep learning

New to crypto, or filling in the gaps? Work through the essentials in Learn, browse every term A–Z, or see live prices for the coins these concepts power.