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Definition

Bitcoin mining

Contributor(s): Matthew Haughn

Bitcoin mining is the processing of transactions in the digital currency system, in which the records of current Bitcoin transactions, known as a blocks, are added to the record of past transactions, known as the block chain.

A Bitcoin is defined by the digitally signed record of its transactions, starting with its creation. The block is an encrypted hash proof of work, created in a compute-intensive process. Miners use software that accesses their processing capacity to solve transaction-related algorithms . In return, they are awarded a certain number of Bitcoins per block. The block chain prevents attempts to spend a Bitcoin more than once -- otherwise the digital currency could be counterfeited by copy and paste.

Originally, Bitcoin mining was conducted on the CPUs of individual computers, with more cores and greater speed resulting in more profitability. After that, the system became dominated by multi-graphics card systems, then field-programmable gate arrays (FPGAs) and finally application-specific integrated circuits (ASICs), in the attempt to find more hashes with less electrical power usage. 

Due to this constant escalation, it has become hard for prospective new miners to start. This adjustable difficulty is an intentional mechanism created to prevent inflation. To get around that problem, individuals often work in mining pools.

Bitcoin generally started with individuals and small organizations mining. At that time, start-up could be enabled by a single high-end gaming system. Now, however, larger mining organizations might spend tens of thousands on one high-performance, specialized computer.

In the malware world, one of the more prevalent current threats is mining botnet infections, in which user systems mine for Bitcoin without the owners' knowledge and funds are channeled to the botnet master.

See a video explanation of Bitcoin mining:

This was last updated in October 2013

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last few days many friends are inviting to join bitcoin mining from usa i am afraid how that i send money to them on moneygram and the send back me,,, no surety of this than how can i trust???
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When purchasing mining equipment make sure you have done an initial check of the seller, getting some referral and use trusted payment providers such as Paypal if possible.
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I have been looking to get into bitcoin mining but finding it too difficult to start. I bumped into an article online on investments and profit through bitcoin mining and other alt coins. The daily,weekly,monthly income got me really, i  couldn't  comprehend the process but after further enlightenment via comment section i realized i can be assisted and this got me directed to crypto expert whom I contacted via his email address CryptobinaryExpert(at)Hotmail DOT com.Breaking financial barriers is one of the sweetest achievement one can achieve and with a profit of One hundred and twenty nine thousand dollars in a couple of weeks should be regarded as a gain though.
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