1. What is blockchain?
A single company's private database A distributed, shared ledger of transactions maintained across many computers A type of bank account A government currency
2. What is Bitcoin's maximum supply designed to be?
Unlimited 21 million coins 1 billion coins It has no defined cap
3. What's the key difference between a "hot" wallet and a "cold" wallet?
Hot wallets are always more secure Cold wallets are kept offline and are more secure but less convenient for frequent trading They are identical in security Cold wallets can only hold Bitcoin
4. What does "halving" refer to in Bitcoin?
A 50% permanent price crash A scheduled event that cuts the rate of new coin creation in half Splitting a wallet into two A type of exchange hack
5. Why is a "seed phrase" so important to protect?
It's only used for tax purposes It's the master key to a wallet — anyone with it can access the funds It resets automatically each week It has no real security function