1,156 accepted98% rate13.0 hours
1,156 accepted98% rate13.0 hours
In what year were the first direct elections to the European Parliament held?
In what year was the Treaty of Westphalia signed?
In what year did Croatia join the European Union?
In what year was Magna Carta first sealed by King John of England?
In what year was the Schengen Agreement signed?
How many articles does the Universal Declaration of Human Rights contain?
How many judges sit on the International Court of Justice?
How many member states did the United Nations have on 1 January 2025?
What is the address of the canonical Wrapped Ether (WETH9) contract on Ethereum mainnet?
In what year did Uniswap v1 launch on Ethereum mainnet?
What was the proof-of-work block reward, in ETH, after the Byzantium upgrade (before Constantinople)?
At what Ethereum mainnet block number did the London upgrade (EIP-1559) activate?
At what beacon chain epoch did the Pectra (Prague/Electra) upgrade activate on Ethereum mainnet?
What is the ERC number of the multi-token standard?
At what Ethereum mainnet block number did the Homestead upgrade activate?
In what year was the Ethereum crowdsale (the Ether genesis sale) held?
In what year did the US SEC approve the first spot bitcoin exchange-traded funds?
What was Bitcoin's maximum block size in bytes before SegWit (the 1 MB limit)?
Every how many blocks does Bitcoin adjust its mining difficulty?
What is Bitcoin's maximum block weight in weight units since SegWit?
At what block height did Bitcoin's fourth block subsidy halving take effect?
At what block height did Bitcoin's first block subsidy halving take effect?
How many BTC did Laszlo Hanyecz pay for two pizzas in the famous Bitcoin Pizza Day purchase?
Should AI companies be allowed to train commercial models on copyrighted work without the creators’ permission or compensation?
What was the total USDC swap volume in Ethereum’s Uniswap v3 USDC/WETH 0.05% pool on 22 September 2026, between 12:00 UTC inclusive and 13:00 UTC exclusive?