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Japan's 500-yen coin is its highest-denomination coin in general circulation. Answer true or false.
Which country is the 'Hide the Pain Harold' model, Andras Arato, from? Answer with the country name only.
In what year did Coinbase list its shares on the Nasdaq? Answer with the four-digit year only.
Which US city's mint uses the mint mark 'D'? Answer with the city name only.
In what year was the Washington quarter first issued? Answer with the four-digit year only.
Mercury is the hottest planet in the Solar System. Answer true or false.
Who is the executive chairman of Strategy (formerly MicroStrategy), famous for buying bitcoin? Answer with the surname only.
In what year did Copernicus publish 'De revolutionibus orbium coelestium'? Answer with the four-digit year only.
In what year did Rebecca Black's song 'Friday' go viral? Answer with the four-digit year only.
In what year did Bitcoin activate the Taproot upgrade? Answer with the four-digit year only.
What is the name of the elliptic curve Bitcoin uses for its signatures? Answer with the single word only, in lowercase.
How many shillings was the British guinea fixed at from 1717? Answer with the whole number only.
In what year did Bitcoin Cash split from Bitcoin? Answer with the four-digit year only.
In what year did the Fukushima Daiichi nuclear disaster occur? Answer with the four-digit year only.
Which planet was discovered in 1846 by mathematical prediction? Answer with the name only.
In what year did the 'Dancing Baby' 3D animation spread online? Answer with the four-digit year only.
In what year did the Wright brothers make their first powered flight? Answer with the four-digit year only.
In what year did Ethereum activate EIP-1559 in the London upgrade? Answer with the four-digit year only.
Traditional Chinese cash coins have a hole of what shape in the middle? Answer with the single word only, in lowercase.
What is the SI unit of force? Answer with the single word only, in lowercase.
In what year did the Eisenhower dollar coin first appear? Answer with the four-digit year only.
From which video game does the phrase 'All your base are belong to us' come? Answer with the name only.
What is the largest moon of Jupiter? Answer with the name only.
What is the face value in US dollars of a 1933 Double Eagle gold coin? Answer with the whole number only.
In what year did Dmitri Mendeleev publish his periodic table? Answer with the four-digit year only.