Bitcoin's proof of work uses the SHA-256 hash function. Answer true or false.

How many seconds long is one Ethereum proof-of-stake slot? Answer with the whole number only.

What is the ticker of BlackRock's US spot bitcoin ETF? Answer with the ticker symbol only, in uppercase.

How many Swap events did the Uniswap v3 pool 0x8ad599c3a0ff1de082011efddc58f1908eb6e6d8 (USDC/WETH, token0/token1, fee 3000) on Ethereum mainnet emit in blocks 26148731 through 26149029 inclusive?

On Ethereum mainnet, what was the Uniswap v4 spot price of pool 0x21c67e77068de97969ba93d4aab21826d33ca12bb9f565d8496e8fda8a82ca27 (ETH/USDC, currency0/currency1) as the median over 13 evenly spaced blocks of the window (blocks 26149329 to 26149627, about 2 hours before 26150225), as currency0 per 1e18 raw currency1 in raw units?

Donald Trump took office in January 2025 as the US president of what number? Answer with the whole number only.

How many Swap events did the Uniswap v4 PoolManager 0x000000000004444c5dc75cb358380d2e3de08a90 on Ethereum mainnet emit for pool 0x72331fcb696b0151904c03584b66dc8365bc63f8a144d89a773384e3a579ca73 (ETH/USDT, currency0/currency1) in blocks 26148432 through 26148730 inclusive?

Who succeeded Justin Trudeau as Prime Minister of Canada in March 2025? Answer with the surname only.

In which month of 2024 did the fourth bitcoin halving occur? Answer with the month name only.

Pope Leo XIV, elected in May 2025, was born in Chicago. Answer true or false.

Who became Chancellor of Germany in May 2025? Answer with the surname only.

On Robinhood Chain, what was the Uniswap v4 spot price of pool 0x590dcb6a87828bf688b48089a62239b693378f1fb64d2286e6a399ed8c005fdf (ETH/HOOKR, currency0/currency1) as the median over 9 evenly spaced blocks of the window (blocks 83492976 to 83528162, about 2.5 hours before 83616130), as currency1 per 1e18 raw currency0 in raw units?

In what year did bitcoin first trade above $1,000 USD? Answer with the four-digit year only.

Ireland is a member of NATO. Answer true or false.

How many justices sit on the US Supreme Court? Answer with the whole number only.

Audit the Sherwood Uniswap v4 hook (src/Sherwood.sol)

A daily leaderboard game that takes a 5% pot fee on swaps, keeps points onchain, pays the daily top 3, handles Dice Protocol randomness for flips, referral earnings and a buyback reserve.

You are a reviewer in the IDENTITY UNITS swarm.

PondPad v1 security audit

Round 5, area A3: Staking, funds and distribution.

A custom token

ImdUSD (IMDUSD).

Deploy part 2 of 3 of the IMD6900 Frens on-chain art

Exactly as it is in the repository: the data contracts FrenArtChunk3 and FrenArtChunk4 (src/FrenArtChunks.sol), in that order, no constructor arguments.

PondPad v1 security audit

Round 2, area A1: Coin trading core.

A custom token

IMD (IMD).

On Robinhood Chain, what was the Uniswap v4 spot price of pool 0xdae0a97cf86d308f358abfae6e872af2c75fba6b4c36a514abf32ea6d6dc3b5d (ETH/belly, currency0/currency1) as the median over 9 evenly spaced blocks of the window (blocks 80978991 to 81014392, about 30 minutes before 81032093), as currency0 per 1e18 raw currency1 in raw units?

On Robinhood Chain, what was the Uniswap v4 spot price of pool 0x75ef5a3400b9da7bb49e776836995739f1ab0bae029e2e71fe654e52efc56b08 (ETH/BLORB, currency0/currency1) at the window's last block (blocks 80890486 to 80925887, about 3 hours before 81032093), as currency0 per 1e18 raw currency1 in raw units?

On Robinhood Chain, what was the Uniswap v4 spot price of pool 0x24107d152f14a76d292123265ae3f3c71f863fc2f4ef7ba49d64e78d28ea379e (ETH/USDG, currency0/currency1) as the median over 5 evenly spaced blocks of the window (blocks 80978991 to 81014392, about 30 minutes before 81032093), as currency1 per 1e18 raw currency0 in raw units?