The coins are not in the app
Beginners hear “wallet” and picture a zip of bills. A crypto wallet is closer to a key ring. The units live on a public ledger. What you keep is the secret that can move them. That secret is a private key, or a set of keys derived from a seed phrase. Share an address. Never share the key.
The classroom lesson Wallets and keys is the short version of this idea. This post stretches it for searchers who landed on the word “wallet” and need the split that actually matters: who holds those keys. That split is custody.
BitBuddy does not hold real keys. The dashboard wallet is paper. The
wallet sandbox
shows a fake bbtest1… address so the shape of receive, sign,
and send is visible without a chain. Nothing here is a product pitch, and
nothing here is financial advice.
Custodial: someone else holds the keys
On a custodial service — typically a licensed exchange or an app that stores crypto for you — the company controls the keys. You log in with a password, email, or phone. If you forget the password, there is a recovery flow. If the company freezes the account, you cannot sign a transfer the network would otherwise accept. You have a claim on an institution, not direct control of the key material.
That is not automatically “worse.” It is a different risk pile. You take on platform risk: hacks of the custodian, withdrawals paused, accounts closed, phishing of the login rather than of the seed. You usually get customer support, password reset, and a familiar app. Many people keep small amounts this way on purpose. Many people also confuse “I can see a balance” with “I can spend if the company disappears.” Those are not the same sentence.
Licensed desks often ask for KYC — identity documents — because they are treating you as a customer of a financial business, not as a holder of a key. That is normal. It is also a reason to read the exchange checklist before you treat any signup as the next step of a course. BitBuddy will not name a partner until a labeled URL exists. See the affiliate disclosure.
Self-custody: you hold the keys
Self-custody means the keys sit on a device you control: a phone app, a desktop program, or a hardware wallet. There is no password-reset desk on the Bitcoin network. If you lose the seed, the coins are still on the ledger — unreachable. If someone else copies the seed, they can spend. The network will not decide who “should” have them.
That tradeoff is the whole subject of self-custody, not a morality play. Some people want fewer intermediaries. Some people want an institution that can freeze a login. Both instincts are reasonable. This classroom does not tell you which to pick. It asks you to say, in your own words, who can sign, and what happens if that party is gone.
Hardware devices keep keys offline until you confirm a send on a small screen. That is cold storage in the everyday sense. A phone app that can sign while connected to the internet is a hot wallet. Hot is convenient and more exposed to malware. Cold is slower and still only as safe as the seed backup. Neither word is a guarantee.
What a seed phrase actually is
A seed phrase (recovery words, backup words) is usually twelve or twenty-four ordinary words generated when the wallet is created. Software turns that list into keys. Anyone with the list can recreate the wallet on another device and spend. That is why a seed is not a “username,” not a “support code,” and not something you type into a website to “validate,” “sync,” or “claim.”
BitBuddy will never ask for a seed phrase, a private key, or an exchange password. We do not hold real funds. There is nothing to restore here. If a page, chat, or pop-up says otherwise, close it. See spotting scams and the glossary entries for phishing and impersonation.
Write seeds on paper or another offline backup you control. Do not screenshot them. Do not paste them into email, cloud notes, or a chat “just this once.” Do not photograph them under a bright light next to your name. The backup is the wallet. Treat the list the way you would treat a stack of signed checks made out to cash.
Addresses are the public side. You can share an address so someone can pay you. Sharing an address does not give them the key. Sending to the wrong address, though, is usually final — the transactions lesson covers why a confirmed payment has no card-style chargeback.
What BitBuddy’s “wallet” is — and is not
Two practice tools sit on this site, and mixing them up is how the vocabulary gets mushy again.
- The paper wallet on the dashboard is a classroom cash balance plus simulated coins. Buys and sells update a row. They do not enter a mempool. Read paper trading, fees, and why practice first.
- The wallet sandbox is a demo key toy in the browser session. You can create a fake wallet, receive toy units, lose the key on purpose, and see why “I forgot” has no help desk on a real chain. It never touches paper cash.
If you are still mapping what a crypto asset is, start there, then wallets, then the sandbox. The 10-minute demo path is built in that order. Guests can read every lesson. A free account saves checkmarks and unlocks paper trading. We do not email you about progress.
A wallet is a tool for keys. Custody is a decision about who holds them. A seed is a backup of those keys. None of those sentences is a reason to buy, sell, or move real funds. Stay on paper until you can say them without a pitch deck in the way.