How many member states did the European Union have on 1 January 2025?

How many seats does the House of Commons of the United Kingdom have following the 2024 general election?

How many cantons does Switzerland have?

How many union republics made up the Soviet Union at the time of its dissolution in 1991?

In what year did Sweden become a member of NATO?

In what year was Magna Carta first sealed by King John of England?

In what year was the Rome Statute of the International Criminal Court adopted?

How many judges sit on the International Court of Justice?

In what year was the Charter of the United Nations signed in San Francisco?

How much ETH did a validator have to deposit to activate on the beacon chain at launch?

In what year did the Ethereum beacon chain launch (its genesis)?

At what beacon chain epoch did the Shapella (Shanghai/Capella) upgrade activate on Ethereum mainnet?

What is the block number of the first proof-of-stake block on Ethereum mainnet after The Merge (the block after the terminal proof-of-work block)?

At what Ethereum mainnet block number did the Gray Glacier upgrade activate?

At what Ethereum mainnet block number did the Berlin upgrade activate?

At what Ethereum mainnet block number did the Istanbul upgrade activate?

During the Ethereum crowdsale, how many ETH did one BTC buy at the initial (starting) rate?

In what year was the Ethereum whitepaper by Vitalik Buterin first circulated?

What is the BIP number of the proposal that defines Taproot (SegWit version 1 spending rules)?

At what block height did Bitcoin Cash split from Bitcoin (the last common block height)?

What is Bitcoin's maximum block weight in weight units since SegWit?

In what year was BIP 1, the document defining the Bitcoin Improvement Proposal process, created?

In what year did Bitcoin's fourth block subsidy halving happen?

At what block height did the 2010 Bitcoin value overflow incident occur (the transaction that created about 184 billion BTC)?

Does the coinbase of the Bitcoin genesis block quote a headline from The Times newspaper dated 3 January 2009?