1,166 accepted95% rate18.4 hours
What is the atomic number of iron? Answer with the whole number only.
How many valence electrons does a carbon atom have? Answer with the whole number only.
Whales are fish. Answer true or false.
Was @blknoiz06 (Ansem) following @dani_who_daniel (Dani) on X as of September 30, 2026, 23:59 UTC?
On Solana mainnet-beta, is the account TokenkegQfeZyiNwAJbNbGKPFXCWuBvf9Ss623VQ5DA marked executable (a program account)? Answer true or false.
On Robinhood Chain (chain id 4663), how many ERC-20 Transfer(address,address,uint256) events did the WETH token contract 0x0bd7d308f8e1639fab988df18a8011f41eacad73 emit in block 73508272? Answer with the whole number only.
On Solana mainnet-beta, how many decimals does the Raydium SPL token mint 4k3Dyjzvzp8eMZWUXbBCjEvwSkkk59S5iCNLY3QrkX6R use? Answer with the whole number only.
On Ethereum mainnet, in which block number was transaction 0x9730eae83fd991d1331cf18116c5c86fd08cef3a617f0a0ff6f6409e0a75e59b included? Answer with the whole number only.
On Ethereum mainnet, what is the Unix timestamp, in seconds, of block 24660732? Answer with the whole number only.
On Ethereum mainnet, what was the base fee per gas of block 25497339, in wei? Answer with the whole number only.
On Ethereum mainnet, in which block number was transaction 0xfeb06d9ec3ca2f04084a4cab7fac611a79c0e5fdd2b14b47eecba1763faba7bb included? Answer with the whole number only.
On Ethereum mainnet, what is the fee recipient (the miner/coinbase field) of block 25909707? Answer with the 0x address only.
On Solana mainnet-beta, did transaction 3UnVaHKQPmqywGeHYmFHZTZd3i1pfPHrJejxmk4NRM27PTs4DMYbm849YfrAR4TkNCpdo4b2umxnS9UykXKULZf4 succeed? Answer true if it executed without error, false if it failed.
On Robinhood Chain (chain id 4663), how many ERC-20 Transfer(address,address,uint256) events did the WETH token contract 0x0bd7d308f8e1639fab988df18a8011f41eacad73 emit in block 75111174? Answer with the whole number only.
On Solana mainnet-beta, in which slot was transaction 4okiQjMnNS2ugGsFsgKbokq9dg2RTBwwXgzYDZRU8cTT4VtLtwHt6hTfccYnWYHJyvVwbzFHyEePrPpp89QLeNdM confirmed? Answer with the whole number only.
On Ethereum mainnet, what is the fee recipient (coinbase) of block 15537394, the first proof-of-stake block after the Merge? Answer with the 0x address only.
On Ethereum mainnet, what is the fee recipient (the miner/coinbase field) of block 24660732? Answer with the 0x address only.
On Ethereum mainnet, how much gas did transaction 0xa334777b7911f9cf5f9ecc51bc6346f91c6de781e50617b5c476976d3ff9096d use (the gasUsed field of its receipt)? Answer with the whole number only.
On Ethereum mainnet, what is the Unix timestamp, in seconds, of block 24826311? Answer with the whole number only.
On Robinhood Chain (chain id 4663), which address sent transaction 0xb48c61ad83e681b5a7d9ab8f6ac6b7c9d0cfe22673738d4af4e3c7f3fcacb978? Answer with the 0x address only.
On Robinhood Chain (chain id 4663), how many transactions are included in block 72596954? Count every transaction the block contains, as eth_getBlockByNumber returns them. Answer with the whole number only.
On Robinhood Chain (chain id 4663), did transaction 0x245cbc3d630c2d81cbcbbb7f89e5db2b4f0c138c3bbf187afe428aab1b697775 succeed (receipt status 1)? Answer true if it succeeded, false if it reverted.
On Ethereum mainnet, is there contract code deployed at address 0xd8da6bf26964af9d7eed9e03e53415d37aa96045 at the latest block? Answer true if eth_getCode returns non-empty bytecode, false otherwise.
On Ethereum mainnet, how much gas was used in total by block 24826311 (the block's gasUsed field)? Answer with the whole number only.
On Solana mainnet-beta, how many transactions, including vote transactions, does the block in slot 333555028 contain (as getBlock returns them)? Answer with the whole number only.