Share Available from these sellers.Used (3) from $400.00 AntMiner S5 ~1155Gh/s @ 0.51W/Gh 28nm ASIC Bitcoin Miner Available from these sellers.What other items do customers buy after viewing this item?Rev 2 GekkoScience 2-Pac Compac USB Stick Bitcoin Miner 15gh/s+ (BM1384x2) 8 2,784 Antminer S7 ~4.73TH/s @ .25W/GH 28nm ASIC Bitcoin Miner 46 Sabrent 13 Port High Speed USB 2.0 Hub with Power Adapter And 2 Control Switches (HB-U14P) 824 Product description Bitmain’s 3rd generation Bitcoin mining ASIC, the BM1384 provides significant improvements over the previous BM1382 chip.Hashrate per mm2 at voltage 0.75V has been increased over 20% while reducing power consumption by 30%.This improvement is the result of months of hard work and investment in the Bitcoin ecosystem.Product information Product Dimensions 11.8 x 5.2 x 6.1 inches Item Weight 6.3 pounds Shipping Weight 7.5 pounds Manufacturer Butm ASIN B00RCTIY4G Origin Imported Item model number S5 Customer Reviews 3.9 out of 5 stars Best Sellers Rank #55,146 in Electronics (See Top 100 in Electronics) #66 in Electronics > Computers & Accessories > Servers December 22, 2014 Warranty & Support Product Warranty: For warranty information about this product, please click here Feedback If you are a seller for this product, would you like to suggest updates through seller support?

Would you like to tell us about a lower price?See questions and answers 5 star67%4 star10%3 star9%2 star1%1 star13%See all verified purchase reviewsTop Customer ReviewsBuy this.Great MinerTwo StarsIt was missing a fan and looked a little scruffy ...The monitor is kind of useless.I wanted to attach it to my iPad ... loving my antminer s5 Still 100% operational, Functional, and working well months later.#BitmainIsBae Customer Images See all customer images Most Recent Customer ReviewsSearch Customer Reviewsbitcoin 2048Where do bitcoins come from?bitcoin blackberry walletWith paper money, a government decides when to print and distribute money.bitcoin blockchain algorithmBitcoin doesn't have a central government.bitcoin cz wiki

With Bitcoin, miners use special software to solve math problems and are issued a certain number of bitcoins in exchange.This provides a smart way to issue the currency and also creates an incentive for more people to mine.Bitcoin miners help keep the Bitcoin network secure by approving transactions.Mining is an important and integral part of Bitcoin that ensures fairness while keeping the Bitcoin network stable, safe and secure.bitcoin side chain explainedCurrently, based on (1) price per hash and (2) electrical efficiency the best Bitcoin miner options are: AntMiner S7 4.73 Th/s 0.25 W/Gh 8.8 pounds $479.95 0.1645 AntMiner S9 13.5 Th/s 0.098 W/Gh 8.1 pounds $1,987.95 0.3603 Avalon6 3.5 Th/s 0.29 W/Gh 9.5 pounds $499.95 0.1232 Bitcoin mining is the process of adding transaction records to Bitcoin's public ledger of past transactions or blockchain.ethereum block time chart

This ledger of past transactions is called the block chain as it is a chain of blocks.The block chain serves to confirm transactions to the rest of the network as having taken place.Bitcoin nodes use the block chain to distinguish legitimate Bitcoin transactions from attempts to re-spend coins that have already been spent elsewhere.Bitcoin mining is intentionally designed to be resource-intensive and difficult so that the number of blocks found each day by miners remains steady.ethereum foundation addressIndividual blocks must contain a proof of work to be considered valid.ethereum atm machineThis proof of work is verified by other Bitcoin nodes each time they receive a block.bitcoin auditorsBitcoin uses the hashcash proof-of-work function.The primary purpose of mining is to allow Bitcoin nodes to reach a secure, tamper-resistant consensus.

Mining is also the mechanism used to introduce Bitcoins into the system: Miners are paid any transaction fees as well as a "subsidy" of newly created coins.This both serves the purpose of disseminating new coins in a decentralized manner as well as motivating people to provide security for the system.Bitcoin mining is so called because it resembles the mining of other commodities: it requires exertion and it slowly makes new currency available at a rate that resembles the rate at which commodities like gold are mined from the ground.A proof of work is a piece of data which was difficult (costly, time-consuming) to produce so as to satisfy certain requirements.It must be trivial to check whether data satisfies said requirements.Producing a proof of work can be a random process with low probability, so that a lot of trial and error is required on average before a valid proof of work is generated.Bitcoin uses the Hashcash proof of work.Bitcoin mining a block is difficult because the SHA-256 hash of a block's header must be lower than or equal to the target in order for the block to be accepted by the network.

This problem can be simplified for explanation purposes: The hash of a block must start with a certain number of zeros.The probability of calculating a hash that starts with many zeros is very low, therefore many attempts must be made.In order to generate a new hash each round, a nonce is incremented.See Proof of work for more information.The Bitcoin mining network difficulty is the measure of how difficult it is to find a new block compared to the easiest it can ever be.It is recalculated every 2016 blocks to a value such that the previous 2016 blocks would have been generated in exactly two weeks had everyone been mining at this difficulty.This will yield, on average, one block every ten minutes.As more miners join, the rate of block creation will go up.As the rate of block generation goes up, the difficulty rises to compensate which will push the rate of block creation back down.Any blocks released by malicious miners that do not meet the required difficulty target will simply be rejected by everyone on the network and thus will be worthless.