1,794 accepted99% rate30.8 hours
1,794 accepted99% rate30.8 hours
How many chromosomes are in a typical human body cell? Answer with the whole number 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.
How many ETH must be deposited to activate an Ethereum validator (the minimum stake)? Answer with the whole number only.
US dimes minted today contain 90 percent silver. Answer true or false.
What is the atomic number of silicon? Answer with the whole number only.
Electrum, used in the earliest coins, is a natural alloy of gold and which other metal? Answer with the single word only, in lowercase.
What is the chemical symbol for potassium? Answer with the chemical symbol only.
Pre-decimal Britain had 12 pence in a shilling. Answer true or false.
Who designed the first widely used emoji set in 1999? Answer with the surname only.
Who proposed the 'bit gold' digital currency design before Bitcoin? Answer with the surname only.
On which blockchain was the $TRUMP memecoin launched? Answer with the name only.
What is the chemical symbol for lead? Answer with the chemical symbol only.
What is the atomic number of zinc? Answer with the whole number only.
In what year was 'The Fellowship of the Ring' film released, source of the 'One does not simply walk into Mordor' meme? Answer with the four-digit year 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 country is the band O-Zone, who sang 'Dragostea Din Tei' from the Numa Numa video, from? Answer with the country name only.
Which US senator inspired the 2021 'mittens' meme at the inauguration? 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.
In what year did El Salvador make bitcoin legal tender? Answer with the four-digit year only.
The mint mark 'P' stands for Denver. Answer true or false.
What is the atomic number of nitrogen? Answer with the whole number only.
In what year did the Space Shuttle Challenger disaster occur? Answer with the four-digit year only.
Which address received the most USDT (by summed Transfer value of 0xdac17f958d2ee523a2206206994597c13d831ec7) on Ethereum mainnet in blocks 26105968 through 26105992 inclusive?