Until relatively recently, building blockchain applications has required a complex background in coding, cryptography, mathematics as well as significant resources. But times have changed. Previously unimagined applications, from electronic voting & digitally recorded property assets to regulatory compliance & trading are now actively being developed and deployed faster than ever before. By providing developers with the tools to build decentralized applications, Ethereum is making all of this possible.

A blockchain,^[1][2][3] originally block chain,^[4][5] is a continuously growing list of records, called blocks, which are linked and secured using cryptography.^[1][6] Each block typically contains a cryptographic hash of the previous block,^[6] a timestamp and transaction data.^[7] By design, a blockchain is inherently resistant to modification of the data. It is “an open, distributed ledger that can record transactions between two parties efficiently and in a verifiable and permanent way”.^[8] For use as a distributed ledger, a blockchain is typically managed by a peer-to-peer network collectively adhering to a protocol for validating new blocks. Once recorded, the data in any given block cannot be altered retroactively without the alteration of all subsequent blocks, which requires collusion of the network majority.

Mining cryptocoins is an arms race that rewards early adopters. You might have heard of Bitcoin, the first decentralized cryptocurrency that was released in early 2009. Similar digital currencies have crept into the worldwide market since then, including a spin-off from Bitcoin called Bitcoin Cash. You can get in on the cryptocurrency rush if you take the time to learn the basics properly.

Which Alt-Coins Should Be Mined?

If you had started mining Bitcoins back in 2009, you could have earned thousands of dollars by now. At the same time, there are plenty of ways you could have lost money, too. Bitcoins are not a good choice for beginning miners who work on a small scale. The current up-front investment and maintenance costs, not to mention the sheer mathematical difficulty of the process, just doesn’t make it profitable for consumer-level hardware. Now, Bitcoin mining is reserved for large-scale operations only.

How Cryptocoin Mining Works

Let’s focus on mining ‘scrypt’ coins, namely Litecoins, Dogecoins, or Feathercoins. The whole focus of mining is to accomplish three things:

• Provide bookkeeping services to the coin network. Mining is essentially 24/7 computer accounting called ‘verifying transactions’.
• Get paid a small reward for your accounting services by receiving fractions of coins every couple of days.
• Keep your personal costs down, including electricity and hardware.

As a hobby venture, yes, cryptocoin mining can generate a small income of perhaps a dollar or two per day. In particular, the digital currencies mentioned above are very accessible for regular people to mine, and a person can recoup $1000 in hardware costs in about 18-24 months.