How to store crypto safely
Custodial and non-custodial wallets, seed phrases, two-factor protection and the rules that help you avoid losing USDT.
Crypto is not stored "in a wallet" but on the blockchain. The wallet holds the keys that let you spend the coins. Whoever has the keys owns the money.
Two ways to store
| Custodial | Non-custodial | |
|---|---|---|
| Who holds the keys | An exchange or service | You |
| Forgot your password | Support restores access | Restore from the seed phrase |
| Main risk | Account freeze, service failure | Losing the seed phrase |
| Examples | Exchange account | Mobile or hardware wallet |
For small amounts and frequent trades an exchange account is convenient. For long-term storage of larger sums your own wallet is safer, ideally a hardware one.
Seed phrase
A seed phrase is 12 or 24 words that restore every key in the wallet. Anyone who learns it gets your funds.
- Write it on paper and keep it somewhere safe, preferably in two places.
- Do not photograph it or keep it in notes, the cloud or messengers.
- Never share it. Support, exchangers and "technicians" never ask for it.
Account protection
- Turn on two-factor authentication with an app, not SMS.
- Use a unique password for every exchange and email account.
- Enable a withdrawal address whitelist if the exchange supports it.
Before a large transfer
- Send a test amount.
- Check the first and last characters of the address.
- Check the network; see the lesson on networks.
In short
Your keys, your responsibility. Seed phrase on paper only, two-factor everywhere, a test transfer before a large one.
Updated October 6, 2026