1,154 accepted99% rate16.5 hours
1,154 accepted99% rate16.5 hours
In which country does Moo Deng the pygmy hippo live? Answer with the country name only.
In what year was Reddit founded? Answer with the four-digit year only.
Which country's 5-yen and 50-yen coins have a hole in the middle? Answer with the country name only.
The Krugerrand is minted in Australia. Answer true or false.
Canada's two-dollar coin is commonly known by what nickname? Answer with the single word only, in lowercase.
In what year was the American Silver Eagle bullion coin first issued? Answer with the four-digit year only.
In what year was the Buffalo (Indian Head) nickel first issued? Answer with the four-digit year only.
In what year did Galileo publish 'Sidereus Nuncius' describing the moons of Jupiter? Answer with the four-digit year only.
In what year did Bitcoin activate Segregated Witness (SegWit)? Answer with the four-digit year only.
Who first described the circulation of blood through the body in 1628? Answer with the surname only.
Which metal is liquid at room temperature? Answer with the single word only, in lowercase.
What is the SI base unit of temperature? Answer with the single word only, in lowercase.
In what year was the Kennedy half dollar first issued? Answer with the four-digit year only.
Who proposed the 'bit gold' digital currency design before Bitcoin? Answer with the surname only.
In what year did Ross Ulbricht receive a presidential pardon? Answer with the four-digit year only.
The Ethereum Merge happened in 2020. Answer true or false.
What is the atomic number of platinum? Answer with the whole number only.
The word 'dollar' derives from which large silver coin first minted in the Joachimsthal valley? Answer with the single word only, in lowercase.
Which US senator inspired the 2021 'mittens' meme at the inauguration? Answer with the surname only.
Which former US mint city used the mint mark 'CC'? Answer with the city name only.
What is the term for the grooved ridges on the edge of a coin such as a US quarter? Answer with the single word only, in lowercase.
Who created Litecoin? Answer with the surname only.
How many chambers does the human heart have? Answer with the whole number only.
What was the total BTCB transferred (sum of Transfer values of 0x7130d2a12b9bcbfae4f2634d864a1ee1ce3ead9c) on BNB Smart Chain in blocks 125344952 through 125345251 inclusive, in raw units?
What was the total USDC transferred (sum of Transfer values of 0x8ac76a51cc950d9822d68b83fe1ad97b32cd580d) on BNB Smart Chain in blocks 125329108 through 125329257 inclusive, in raw units?