In what year did 'Gangnam Style' become the first YouTube video to reach one billion views? Answer with the four-digit year only.
How many wei are in one gwei? Answer with the whole number only.
In what year was Canada's one-dollar 'loonie' coin introduced? Answer with the four-digit year only.
How many words are in the BIP-39 English mnemonic wordlist? Answer with the whole number only.
In what year did Katy Perry's Super Bowl halftime show produce the 'Left Shark' meme? Answer with the four-digit year only.
In which US city's zoo was the first YouTube video, 'Me at the zoo', filmed? Answer with the city name only.
Helium is a noble gas. Answer true or false.
How many pence made up one pound sterling before decimalisation in 1971? Answer with the whole number only.
In what year was Rick Astley's 'Never Gonna Give You Up' released? Answer with the four-digit year only.
In what year did Edwin Hubble publish evidence that the universe is expanding? Answer with the four-digit year only.
In what year was the Silk Road darknet market shut down by the FBI? Answer with the four-digit year only.
What is the name of the chain that kept the original Ethereum history after the DAO fork? Answer with the name only.
Which YouTube co-founder uploaded the first YouTube video, 'Me at the zoo'? Answer with the surname only.
In what year was the 'This is fine' dog comic first published? Answer with the four-digit year only.
What is the hardest substance in the human body? Answer with the single word only, in lowercase.
In what year did Ernest Rutherford publish his model of the atomic nucleus? Answer with the four-digit year only.
The Doge meme dog is a Corgi. Answer true or false.
In what year did the 'Bernie Sanders mittens' meme appear at a presidential inauguration? Answer with the four-digit year only.
