2

I want to know about how can i get ethereum blockchain network hash rate via geth console or web3.
Like the result of this api - https://www.etherchain.org/api/miningEstimator

{
 "blocktime":"14.4444282592862345",
 "difficulty":"1846255676466184.9397",
 "hashrate":"137494795284766.6526554599708515"
}
6

The way of deriving the information can be found here. So via the console,

function getNetworkStats(
        sampleSize //!< [in] Larger n give more accurate numbers but with longer latency.
    ) {
    blockNum = eth.blockNumber; // Save this value to atomically get a block number.
    blockTime = (eth.getBlock(blockNum).timestamp - eth.getBlock(blockNum - sampleSize).timestamp) / sampleSize;
    difficulty = eth.getBlock(blockNum).difficulty; // You can sum up the last n-blocks and average; this is mathematically sound.

    return {
      "blocktime": blockTime,
      "difficulty": difficulty,
      "hashrate": difficulty / blockTime,
    };
}

Values are in seconds, hashes, and hashes per second, respectively.

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