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ETHERLive delivers real-time price and volume data across 16+ exchanges to users in a clear and easy-to-understand package. Users can get up-to-the-second updates for each exchange/currency pair, as well as aggregated market averages for each exchange, currency, and the market as a whole. It also provides a global converted average of all the currency pairs monitored by ETHNews, converted to USD.

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Thursday Dec 14th 2017
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Proof Of Work

Definition of "Proof Of Work"

Simplified: The proof of work (POW) system is a measure to deny attacks on the blockchain network. It requires work and more processing time from the requestor (computer). This protocol is in place to disallow spam on the blockchain network, deter other abuses such as double-spending, and confirm that a new block is found/formed. Ether is just one example of a coin that utilizes the POW protocol. One important property of a block in Ethereum and many other crypto-ledgers is that the hash of the block must be smaller than some target value. The reason this is necessary is that in a decentralized system anyone can produce blocks, so in order to prevent the network from being flooded with blocks, and to provide a way of measuring how much consensus there is behind a particular version of the blockchain, it must in some way be hard to produce a block. Because hashes are pseudorandom, finding a block with a hash that has less than 64 bytes takes an average of 4.3 billion attempts. In all such systems, the target value self-adjusts so that on average one node in the network finds a block every N minutes (eg. N = 10 minutes for Bitcoin and 1 minute for Ethereum).

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