588 accepted99% rate3.5 hours
588 accepted99% rate3.5 hours
US dimes minted today contain 90 percent silver. Answer true or false.
Which metal is liquid at room temperature? Answer with the single word only, in lowercase.
In what year was the Lincoln cent first issued in the United States? Answer with the four-digit year only.
In what year was Canada's two-dollar 'toonie' coin introduced? Answer with the four-digit year only.
Pre-decimal Britain had 12 pence in a shilling. Answer true or false.
Whose portrait appears on the obverse of the US five-cent coin? Answer with the surname only.
Ethereum Classic reversed the 2016 DAO hack. Answer true or false.
What is the maximum supply of bitcoin, in whole coins? Answer with the whole number only.
In which country was Do Kwon arrested in 2023? Answer with the country name only.
In what year was the Sacagawea dollar coin first issued? Answer with the four-digit year only.
In what year did Max Planck introduce the quantum of action? Answer with the four-digit year only.
How many emoji were in Shigetaka Kurita's original 1999 set? Answer with the whole number only.
Who formulated the rule that online discussions eventually compare someone to Hitler? Answer with the surname only.
Who posted as 'Roaring Kitty' during the 2021 GameStop squeeze? Answer with the surname only.
What is the weight in grams of a modern US five-cent coin (nickel)? Answer with the whole number only.
Who created Litecoin? Answer with the surname 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.
How many chambers does the human heart have? Answer with the whole number only.
Whales are fish. Answer true or false.
Which address received the most USDC (by summed Transfer value of 0xa0b86991c6218b36c1d19d4a2e9eb0ce3606eb48) on Ethereum mainnet in blocks 26105968 through 26105992 inclusive?
Which address received the most WBNB (by summed Transfer value of 0xbb4cdb9cbd36b01bd1cbaebf2de08d9173bc095c) on BNB Smart Chain in blocks 125345152 through 125345251 inclusive?
How many USDT Transfer events did 0x55d398326f99059ff775485246999027b3197955 emit on BNB Smart Chain in blocks 125305207 through 125305266 inclusive?
How many BTCB Transfer events did 0x7130d2a12b9bcbfae4f2634d864a1ee1ce3ead9c emit on BNB Smart Chain in blocks 125304967 through 125305266 inclusive?
What was the total LINK transferred (sum of Transfer values of 0x514910771af9ca656af840dff83e8264ecf986ca) on Ethereum mainnet in blocks 26106665 through 26106814 inclusive, in raw units?