Get the most recent block number for a specified blockchain.
The chain to query
eth, 0x1, sepolia, 0xaa36a7, polygon, 0x89, bsc, 0x38, bsc testnet, 0x61, avalanche, 0xa86a, fantom, 0xfa, cronos, 0x19, arbitrum, 0xa4b1, chiliz, 0x15b38, chiliz testnet, 0x15b32, gnosis, 0x64, gnosis testnet, 0x27d8, base, 0x2105, base sepolia, 0x14a34, optimism, 0xa, polygon amoy, 0x13882, linea, 0xe708, moonbeam, 0x504, moonriver, 0x505, moonbase, 0x507, linea sepolia, 0xe705, flow, 0x2eb, flow-testnet, 0x221, ronin, 0x7e4, ronin-testnet, 0x7e5, lisk, 0x46f, lisk-sepolia, 0x106a, pulse, 0x171, sei-testnet, 0x530, sei, 0x531, monad, 0x8f "0x1"
Returns the latest block number.
The response is of type string.
"15863321"