How to Set Up a Crypto Wallet
A wallet keeps the private keys that prove you own your crypto. How to choose one, set it up, and protect your seed phrase.
No es asesoramiento financiero. This article is for informational purposes only. Cryptocurrency is volatile and high-risk — do your own research.
- A wallet stores the private keys that prove you own your crypto — it doesn't literally hold the coins.
- Hot wallets (apps) suit small amounts; cold wallets (hardware) are safer for larger holdings.
- Your seed phrase is the master backup — write it down offline and never share it or store it as a photo.
- Whoever controls the keys controls the funds, so self-custody means taking security seriously.
A crypto wallet is how you hold and control your own coins. This guide explains the types of wallet, how to set one up safely, and the single most important thing to protect: your seed phrase. Nothing here is financial advice.
What a wallet actually does
A wallet does not really “store” your crypto — the coins live on the blockchain. What the wallet stores is your private key: the secret that proves the coins are yours and lets you spend them. Whoever holds the key controls the funds. That is why the golden rule is “not your keys, not your coins”.
Hot wallets vs cold wallets
- Hot wallets are connected to the internet — a phone app, a browser extension or an exchange account. They are convenient for everyday use and small amounts, but being online makes them more exposed to hacks and malware.
- Cold wallets keep your keys offline, usually on a dedicated hardware device. They are the safest option for larger holdings or anything you want to keep for a long time, because the keys never touch an internet-connected computer.
Many people use both: a hot wallet for spending money, a cold wallet for savings.
Setting up a wallet, step by step
- Choose a reputable wallet. For hardware, stick to well-known brands bought directly from the manufacturer — never second-hand or from a marketplace, which risks tampering.
- Install or initialise it following the official instructions only. Bookmark the real website; scammers buy adverts for fakes.
- Write down your seed phrase. The wallet will show you a list of 12 or 24 words. This is a human-readable backup of your private key.
- Store the seed phrase offline. Write it on paper (or stamp it into metal) and keep it somewhere private and safe. Never take a photo of it, type it into a website, or store it in the cloud.
- Test with a small amount. Send a little crypto in, then practise sending some out, before trusting it with more.
Protecting your seed phrase
Your seed phrase is your money. Anyone who sees it can take everything, and if you lose it there is no “forgot password” — the funds are gone. So:
- Never share it with anyone — no legitimate company, wallet or “support agent” will ever ask for it.
- Never enter it into a website or app except your wallet during recovery.
- Consider a second physical backup stored in a different safe location.
Sending crypto without mistakes
When you send, always check the receiving address carefully (copy-paste, then verify the first and last characters) and confirm you are using the correct network. Some tokens exist on several networks, and choosing the wrong one can lose your funds. When in doubt, send a small test amount first.
Key takeaways
- A wallet stores your private keys; whoever holds the keys controls the coins.
- Use a hot wallet for small, everyday amounts and a cold (hardware) wallet for savings.
- Your seed phrase is the master backup — keep it offline, private, and never share or photograph it.
- Double-check addresses and networks, and test with small amounts first.
This guide is for information only and is not financial advice. Cryptocurrency is volatile and high-risk. Always do your own research — see our Aviso legal.