What is Bitcoin mining?

by | Feb 27, 2017 | Bitcoin, Blockchain

What is Bitcoin mining?

Bitcoin is a form of decentralized digital currency. It is not printed like dollars or euros. It is created by people by running software that solves mathematical problems.

As we already discussed in the previous article (What is Bitcoin?), Bitcoin is created by a community of people by running software that solves certain mathematical problems. This process of creating Bitcoin by running some software is called Bitcoin Mining.

What do Bitcoin miners do?

Bitcoins are traded digitally. Someone has to keep track of all the Bitcoin transactions. The bitcoin network does this by collecting the set of transactions during a certain period of time and keeping them in a list called ‘block’. A list of blocks is called ‘blockchain’ (What is Blockchain?). It is the Bitcoin miners’ job to add a block to the blockchain.

How easy is Bitcoin mining?

It is not easy. The miners have to keep track of all the transactions that take place during a certain period of time and apply some mathematical formula on it, the result of which is kept in the blockchain. This mathematical problem is not easy to solve.

What is the mathematical problem that Bitcoin miners solve?

All Bitcoin transactions are maintained in blocks, and the blocks are linked to each other to form a blockchain, with each block linked with its previous block.

Miners have to perform a cryptographic hash of the previous block in the chain and find a number called a nonce, such that if the content of the block is hashed along with the nonce, the resultant value is less than the network’s difficulty target. It takes lots of computation power to solve this mathematical problem. The Bitcoin miners normally find a nonce, create a hashed value, and compare it with the network’s difficulty target. And, if the result is not satisfactory, the miners keep trying with different nonce values.

What is the reward for Bitcoin Mining?

Every time a Bitcoin miner successfully adds a block to the blockchain, he is rewarded with a certain number of bitcoins. This reward, called block reward, is halved after every 2,10,000 blocks. The block reward started with 50 bitcoins in 2009; from 2014, it is 25 bitcoins now.

There is something called transaction fees also, this is optional though. Payers may include …

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Amrita Mitra

Author

Ms. Amrita Mitra is an author, who has authored the books “Cryptography And Public Key Infrastructure“, “Web Application Vulnerabilities And Prevention“, “A Guide To Cyber Security” and “Phishing: Detection, Analysis And Prevention“. She is also the founder of Asigosec Technologies, the company that owns The Security Buddy.

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