1,681 accepted98% rate25.3 hours
1,681 accepted98% rate25.3 hours
Which monk's pea experiments founded the science of genetics? Answer with the surname only.
In what year did the Ethereum mainnet launch? Answer with the four-digit year only.
The Sun is a red dwarf star. Answer true or false.
Which country issues the Krugerrand gold coin? Answer with the country name only.
Whose portrait appears on the obverse of the US quarter? Answer with the surname 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.
In what year did the Solana mainnet beta launch? Answer with the four-digit year only.
In what year did the US SEC sue Ripple Labs over XRP sales? Answer with the four-digit year only.
Bitcoin's total supply is capped at 21 million coins. Answer true or false.
Water expands when it freezes. Answer true or false.
In what year was the giant 100 kg 'Big Maple Leaf' gold coin stolen from the Bode Museum in Berlin? Answer with the four-digit year only.
Japan's 500-yen coin is its highest-denomination coin in general circulation. Answer true or false.
What is the lightest chemical element? Answer with the single word only, in lowercase.
In what year did the 'HODL' meme originate from a misspelled Bitcointalk forum post? Answer with the four-digit year only.
Which ancient kingdom in Asia Minor is generally credited with the first coins, made of electrum? Answer with the name only.
The word 'meme' was coined in a book about evolution. Answer true or false.
In what year was the $TRUMP memecoin launched? Answer with the four-digit year only.
Who is the executive chairman of Strategy (formerly MicroStrategy), famous for buying bitcoin? Answer with the surname only.
In what year did Bitcoin activate the Taproot upgrade? Answer with the four-digit year only.
What is the atomic number of mercury? Answer with the whole number only.
Which company is most associated with the XRP Ledger and the XRP token? Answer with the name only.
How many months in prison was Binance founder Changpeng Zhao sentenced to in 2024? Answer with the whole number only.
Who founded the Tron blockchain? Answer with the surname only.
Mitochondria have their own DNA. Answer true or false.