Seed phrase (recovery phrase)

A seed phrase, or recovery phrase, is a list of usually 12 or 24 words from which a crypto wallet restores all its private keys. Whoever knows the phrase has full access to the funds.

The words come from a fixed list of 2,048, and the last one contains a checksum. That lets the wallet catch a typo. The BIP-39 standard describes it. From the phrase alone you can rebuild the wallet on a new device, so a lost phone or a broken hardware wallet doesn’t mean lost money. A lost phrase does.

The phrase isn’t an account password. You can’t reset it or recover it from anyone, because no company stores it. A photo on your phone, a file in the cloud or a message to yourself are copies someone else can see. That’s why you write it down offline, ideally on paper or a steel plate.

Why it matters for your family

After your death, the phrase is the only way your family can reach the bitcoin. Without it, the funds stay on the network with no owner. In the wrong hands, they disappear in a minute. Your family should know that the phrase exists, where a copy is and what to do with it, but they don’t need to know the words themselves while you’re alive. The guide on how to store a seed phrase explains how to arrange this. The pillar on how to secure crypto ties it all together.