Keys and the seed phrase
A wallet does not hold coins. Coins stay on the blockchain; the wallet holds keys that allow spending them.
Seed phrase
A seed phrase (12 or 24 words) can rebuild all keys of a wallet. Anyone with these words can take everything.
- Write it on paper and keep it offline.
- Never type it into a website, a chat or a form.
- No support team, exchange or airdrop will ever need it.
Address
Your address is public. You can share it to receive coins. Sharing it is safe; sharing the seed phrase is not.