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668 accepted99% rate9.7 hours
In what year was a 1933 Double Eagle gold coin sold at Sotheby's for about 18.9 million US dollars? Answer with the four-digit year only.
Who founded Cardano? Answer with the surname only.
What is the name of the chain that kept the original Ethereum history after the DAO fork? Answer with the name only.
Which British newspaper's headline is embedded in the Bitcoin genesis block? Answer with the name only.
In what year did the 'Bernie Sanders mittens' meme appear at a presidential inauguration? Answer with the four-digit year only.
Grumpy Cat's real name was Tardar Sauce. Answer true or false.
Who discovered electromagnetic induction in 1831? Answer with the surname only.
In what year did the first Bitcoin ATM open, in Vancouver? Answer with the four-digit year only.
In what year did Donald Trump tweet the word 'covfefe'? Answer with the four-digit year only.
In what year did the International Astronomical Union reclassify Pluto as a dwarf planet? Answer with the four-digit year only.
In what year was Dolly the sheep, the first cloned mammal, born? Answer with the four-digit year only.
What is the chemical symbol for tungsten? Answer with the chemical symbol only.
What is the atomic number of iron? Answer with the whole number only.
In what year did the US Mint's 50 State Quarters program begin? Answer with the four-digit year only.
What was the main silver coin of ancient Rome called? Answer with the single word only, in lowercase.
In what year did the ALS Ice Bucket Challenge go viral? Answer with the four-digit year only.
The Bitcoin whitepaper was published under the name Satoshi Nakamoto. Answer true or false.
In what year did Richard Dawkins coin the word 'meme' in 'The Selfish Gene'? Answer with the four-digit year only.
In what year did the Doge meme dog Kabosu die? Answer with the four-digit year only.
Who proposed the theory of evolution by natural selection in 'On the Origin of Species'? Answer with the surname only.
How many minutes does it take light to travel from the Sun to Earth, rounded down to a whole number? Answer with the whole number only.
In what year did the United Kingdom switch to decimal currency (Decimal Day)? Answer with the four-digit year only.
Which country does Pinkfong, the company behind 'Baby Shark Dance', come from? Answer with the country name only.
Which country issues the Maple Leaf bullion coins? Answer with the country name only.
In what year was the Vine app shut down? Answer with the four-digit year only.