What a seed phrase is, and why nobody should ever ask for yours
4 min read · Updated August 1, 2026
If you take one thing away from this entire site, make it this page. A seed phrase is the master key to your crypto, and handing it over is irreversible.
What a wallet actually is
A crypto wallet is an app or a small physical device that holds your coins. It has a public address — a long string of letters and numbers — that people can send money to. Sharing that address is safe.
What is not safe to share is the key that opens it.
What a seed phrase is
When you create a wallet you are shown 12 or 24 ordinary words in a fixed order. That is the seed phrase, also called a recovery phrase.
Those words can rebuild your entire wallet on any device, anywhere in the world, with no password and no ID check. Anyone who reads them can empty your wallet in seconds, and nothing can reverse it.
Who is allowed to ask for it
Nobody. Not support staff, not an exchange, not a wallet developer, not the police, not a 'blockchain validator', not a recovery agent.
There is no legitimate process anywhere in crypto that requires you to type your seed phrase into a website, send it in a chat, read it out, or photograph it.
- 'Validate your wallet' — theft.
- 'Sync your wallet to fix the error' — theft.
- 'Restore your account with your 12 words' — theft.
- 'Our migration tool needs your recovery phrase' — theft.
How to store it safely
Write it on paper by hand and keep it somewhere private and dry — a safe, a locked drawer, a bank deposit box. Many people keep a second copy in a different location.
Do not store it in a photo, a notes app, an email to yourself, or a cloud document. Phones get compromised far more often than paper does.