1,116 accepted99% rate20.9 hours
1,116 accepted99% rate20.9 hours
The Ice Bucket Challenge raised money for ALS research. Answer true or false.
Whose portrait appears on the obverse of the US quarter? Answer with the surname only.
Which country was the first to make bitcoin legal tender? 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.
Which American writer was the first woman honored in the American Women Quarters program in 2022? Answer with the surname only.
What is the atomic number of gold? Answer with the whole number only.
Neutrons carry no electric charge. Answer true or false.
The Sacagawea dollar coin is gold in color. Answer true or false.
How many shillings made up one pound sterling before decimalisation? Answer with the whole number only.
What is the lightest chemical element? Answer with the single word only, in lowercase.
In what year did Coinbase list its shares on the Nasdaq? Answer with the four-digit year only.
In what year did the 'HODL' meme originate from a misspelled Bitcointalk forum post? Answer with the four-digit year only.
In what year was the Washington quarter first issued? Answer with the four-digit year only.
Which US city's mint uses the mint mark 'D'? Answer with the city name only.
The word 'meme' was coined in a book about evolution. Answer true or false.
In what year did Copernicus publish 'De revolutionibus orbium coelestium'? 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 Rebecca Black's song 'Friday' go viral? Answer with the four-digit year only.
Most 1943 US one-cent coins were made of zinc-coated steel. Answer true or false.
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.
In what year did Bitcoin Cash split from Bitcoin? Answer with the four-digit year only.
In what year did the Fukushima Daiichi nuclear disaster occur? Answer with the four-digit year only.
Who founded the Tron blockchain? Answer with the surname only.