As a cryptocurrency attracts more interest, mining becomes harder and the amount of coins received as a reward decreases. For example, when Bitcoin was first created, the reward for successful mining was 50 BTC. Now, the reward stands at 12.5 Bitcoins. This happened because the Bitcoin network is designed so that there can only be a total of 21 mln coins in circulation.
If you decide to invest in cryptocurrencies, Bitcoin is obviously still the dominant one. However, in 2017 its share in the crypto-market has quite dramatically fallen from 90 percent to just 40 percent. There are many options currently available, with some coins being privacy-focused, others being less open and decentralized than Bitcoin and some just outright copying it.
15 Dash [16] DASH 2014 734 Mio. USD 0,6 % 7,7 % 10 GB X11 Kryptowährung deren Netzwerk aus sogenannten Masternodes bestehen. Für den Betrieb eines Masternodes sind 1000 Dash notwendig und man erhält einen Teil der Netzwerkgebühr für den Betrieb. Dash legt ebenfalls einen Fokus auf Privatsphäre in dem Transaktionen nicht komplett öffentlich sind [17].
Ethereum: an open-source cryptocurrency launched in 2015 and proposed by Vitalik Buterin, Garvin Wood, and Joseph Lubin. It is based on the blockchain model whose main objective is the decentralization of the market. In 2016 there was a fork from which the Classic Ethereum emerged. Currently and since its inception, Ethereum ranks second in tems of the market capitalization.
The main concept of ICON is their idea of a “loopchain.” As stated in their whitepaper, a loopchain can be described as a “high-performance blockchain that can provide real-time transaction, which is based on enhanced Smart Contract.” Through ICON, participants will be able to connect to any blockchain without relying on the current centralized exchanges.
Follow our (and your own) rules and you will be able to take advantage over the people who don’t. Also, you will be able to detect which cryptocurrencies are scams and which have potential to skyrocket like Bitcoin. This shall be a journey, which we will take with you, where we will try to find the safest and most promising opportunities on the crypto-market! 
Generally speaking, the argument for Bitcoin Cash is that by allowing the block size to increase, more transactions can be processed in the same amount of time. Those opposed to Bitcoin Cash argue that increasing the block size will increase the storage and bandwidth requirement, and in effect will price out normal users. This could lead to increased centralization, the exact thing Bitcoin set out to avoid.
You don‘t need to understand details about SHA 256. It‘s only important you know that it can be the basis of a cryptologic puzzle the miners compete to solve. After finding a solution, a miner can build a block and add it to the blockchain. As an incentive, he has the right to add a so-called coinbase transaction that gives him a specific number of Bitcoins. This is the only way to create valid Bitcoins.
Decentralized cryptocurrency is produced by the entire cryptocurrency system collectively, at a rate which is defined when the system is created and which is publicly known. In centralized banking and economic systems such as the Federal Reserve System, corporate boards or governments control the supply of currency by printing units of fiat money or demanding additions to digital banking ledgers. In case of decentralized cryptocurrency, companies or governments cannot produce new units, and have not so far provided backing for other firms, banks or corporate entities which hold asset value measured in it. The underlying technical system upon which decentralized cryptocurrencies are based was created by the group or individual known as Satoshi Nakamoto.[23]