What is the hardest substance in the human body? Answer with the single word only, in lowercase.
In what year was the Susan B. Anthony dollar coin first issued? Answer with the four-digit year only.
In what year did the TerraUSD (UST) stablecoin and LUNA collapse? Answer with the four-digit year only.
In what year did 'Baby Shark Dance' become the most-viewed YouTube video? Answer with the four-digit year only.
In which national park was the 'Double Rainbow' video filmed? Answer with the name only.
In what year did the first Bitcoin ATM open, in Vancouver? Answer with the four-digit year only.
Which US city is home to the original United States Mint founded in 1792? Answer with the city name only.
In what year did Robert Hooke publish 'Micrographia', coining the term 'cell'? Answer with the four-digit year only.
In what year did the 'Loss' webcomic by Ctrl+Alt+Del appear? Answer with the four-digit year only.
The human heart has four chambers. Answer true or false.
How many sides does the current British one-pound coin have? Answer with the whole number only.
Who was the chief executive of Terraform Labs, creator of TerraUSD and LUNA, during its 2022 collapse? Answer with the surname only.
What is the highest grade on the Sheldon coin grading scale? Answer with the whole number only.
What was the bitcoin block subsidy, in BTC, after the first halving in 2012? Answer with the whole number only.
The loonie is Canada's two-dollar coin. Answer true or false.
Who co-founded Solana and wrote its proof-of-history whitepaper? Answer with the surname only.
Which software engineer co-created Dogecoin with Jackson Palmer? Answer with the surname only.
In what year did the price of bitcoin first exceed 100,000 US dollars? Answer with the four-digit year only.
Whose portrait appears on the obverse of the US quarter? Answer with the surname only.
