1. What happened on May 22, 2010, that Bitcoin enthusiasts celebrate as “Bitcoin Pizza Day”?

Bitcoin’s first block reward halving Activation of SegWit Bought two pizzas for 10,000 BTC Publication of the Bitcoin whitepaper

2. How many satoshis make up one full Bitcoin?

1,000 100,000 10,000,000 100,000,000

3. What is the maximum number of bitcoins that can ever exist?

10 million 21 million 50 million Unlimited supply

4. Approximately how often does the Bitcoin network adjust its mining difficulty?

Every block Every 100 blocks Every 2016 blocks Every 10,000 blocks

5. Which hashing algorithm underpins Bitcoin’s proof‑of‑work mining process?

SHA‑1 scrypt SHA‑256 SHA‑3

6. When did the SegWit upgrade activate on the Bitcoin network?

July 9 2016 May 11 2020 Aug 24 2017 Nov 14 2021

7. What was one of the major benefits of the SegWit upgrade?

Converted Bitcoin to proof‑of‑stake Introduced Schnorr signatures Fixed transaction malleability and increased block capacity Removed block rewards

8. When did the Taproot soft fork activate?

Jan 3 2019 Aug 24 2017 Nov 14 2021 April 20 2024

9. Which feature was introduced by the Taproot upgrade?

Lightning Network channels Pay‑to‑Taproot and MAST with Schnorr signatures Off‑chain token issuance Instant proof‑of‑stake finality

10. What average block time does Bitcoin target?

1 minute 5 minutes 10 minutes 60 minutes

11. What became the block reward after the April 20 2024 halving?

12.5 BTC 6.25 BTC 3.125 BTC 1.5625 BTC

12. When is the next Bitcoin halving expected after 2024?

2026 2028 2032 2140

13. By April 2024, how many halving events had occurred?

Two Three Four Five

14. Around what year will the last Bitcoin likely be mined?

2040 2075 2140 2200

15. Which best describes the Lightning Network?

On‑chain consensus Layer‑2 off‑chain payment channels Proof‑of‑stake upgrade Decentralized file storage

16. Which statement about hot and cold wallets is true?

Hot wallets are offline devices Cold wallets are always online Hot wallets are online; cold wallets are offline for security Both are online

17. What is a satoshi relative to a Bitcoin?

One‑thousandth One‑ten‑millionth One‑hundred‑millionth A new token

18. What is a Bitcoin halving?

Doubles the supply Changes consensus Cuts the block reward by 50% A community vote

19. On January 10 2024, how many spot Bitcoin ETFs launched?

One Five Eleven Twenty

20. Which headline was embedded in Bitcoin’s genesis block?

“U.S. Dollar hits all‑time high” “The Times 03/Jan/2009 Chancellor on brink of second bailout for banks” “Bitcoin goes live on NYSE” “Ethereum launches smart contracts”

21. Which layer does the Lightning Network operate on?

Layer‑0 Layer‑1 Layer‑2 Layer‑3

Bitcoin Knowledge Quiz