A lot of concerns have been raised regarding cryptocurrencies’ decentralized nature and their ability to be used almost completely anonymously. The authorities all over the world are worried about the cryptocurrencies’ appeal to the traders of illegal goods and services. Moreover, they are worried about their use in money laundering and tax evasion schemes.

The biggest problem of the Blockchain is its reliance on miners. This is exactly why the cryptocurrency called IOTA (the Internet of Thigs Application) was created in 2016. IOTA also battles increasing transaction fees and network scalability. IOTA’s blockchain is called Tangle. It is a blockchain with no blocks and no chains. In this system, the users themselves are responsible for validating transactions. This means there’s no need for approval from miners; so users enjoy a fee-free transaction and an increased process speed.
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.

Active traders looking to speculate on Bitcoin over the short or medium term may find that trading CFD/derivatives on Bitcoin using an online forex broker will provide them with 24hour trading, potentially lower margin, and the ability to go either long or short. Because of counter-party risk, choosing a broker is just as important as finding one with the best trading tools or commission rates.

As described in their whitepaper, Augur has set out to create the first decentralized, open-source platform for prediction markets. Based on the ideas of game theory and wisdom of the crowd, prediction markets achieve greater forecasting accuracy than any individual experts can. However, the problem with previously existing prediction markets is that they were all centralized.
This flexibility makes Ethereum the perfect instrument for blockchain -application. But it comes at a cost. After the Hack of the DAO – an Ethereum based smart contract – the developers decided to do a hard fork without consensus, which resulted in the emerge of Ethereum Classic. Besides this, there are several clones of Ethereum, and Ethereum itself is a host of several Tokens like DigixDAO and Augur. This makes Ethereum more a family of cryptocurrencies than a single currency.
Bitfinex is a full-featured spot trading platform for major digital assets & cryptocurrencies, including Bitcoin, Ethereum, EOS, Litecoin, Ripple, NEO, Monero and many more. Bitfinex offers leveraged margin trading through a peer-to-peer funding market, allowing users to securely trade with up to 3.3x leverage. We also boast a suite of order types to help traders take advantage of every situation.
EOS is also the first blockchain with a constitution. There are governing principles that every stakeholder agrees on, and the set of rules is attached to every block that is mined. EOS will have the capability to process millions of transactions each second using horizontal scaling. This is much different from Bitcoin and Ethereum. The current model also allows for 5 percent inflation, which can be used to further develop the network. In addition, EOS does not require users to pay for each transaction, which will help fuel adoption.
When issuing a transaction in IOTA, you validate 2 previous transactions. This means you no longer outsource validation to miners which requires wasteful amounts of computing power and usually a large stake of coins. These required resources are, in effect, centralizing the currencies which many believe were created to be decentralized in the first place.  
Cindicator is a project that is building a hybrid AI and human intelligence ecosystem that will predict movements in financial markets. They have been able to build an ecosystem that generates over 400,000 forecasts a month utilizing over 30 machine learning algorithms. Cindicator already has a working platform and they have over 115,000 analysts that are providing their predictions. Cindicator uses the wisdom of the crowd each day by sending out questions about financial and cryptocurrency markets. Analysts answer the questions and the answers are aggregated. The AI portion will come in when Cindicator has to analyse these responses in order to come up with a reasonable prediction. The analysts are studied to determine patterns and common factors. Cindicator will then use advanced data analytics models and machine learning to improve upon themselves and refine the algorithms. Cindicator has a pretty strong team component and the founders each have backgrounds in data science, trading, platform development and marketing. They also have some well-known advisors on board including Anthony Diiorio and Charlie Shrem. The native token in the Cindicator network is the ERC20 CND token. This is used in the Cindicator ecosystem to get access to the predictions. The team held a token sale in September of 2017 and was able to raise $15m for 75% of the total supply. CND tokens hit the exchanges not long after the ICO and have been quite volatile since. They reached an ATH in January of 2018 but have since traced the market lower. There is reasonable liquidity for the token however over 96% of the trading volume is taking place on the Binance exchange. Token remains very volatile so trade with caution. *Coin Bureau's views are not investment advice. Do Your Own Research.
Groestlcoin is a privacy centric Peer-to-Peer (P2P) cryptocurrency that was launched in 2014. It was developed to be an ASIC resistant version of Bitcoin. They were able to achieve a number of important firsts including being the first coin to implement Segregated Witness and it was also the first to perform a Lightning Network transaction on the mainnet Groestlcoin is a PoW cryptocurrency and it is unique in that it is one of the few coins that make use of the Grøstl-512 mining algorithm. This is less complex than Bitcoin's algorithm which means that it is still possible to mine this coin with your GPU. There is a maximum supply of 105 million GRS and so far, just over 72 million are in circulation. The coin also has a much shorter block time of only 1 minutes with a large total supply and weekly subsidy halvings. This all contributes to cheap and fast transaction times. You can send 10,000 GRS and the cost will be far less than a penny. The developers behind the Groestlcoin project are anonymous but have a well-established reputation in the community. This team has been regularly updating the protocol as evidenced by the extremely active GitHub repositories. The project has some of the most active repositories in the cryptocurrency market currently. There is also a pretty active community behind Groestlcoin which could be an invaluable factor when it comes to long term adoption of the coin. GRS has had quite a rocky ride since its initial listings on exchanges back in 2014. It reached an all time high in the 2018 bull run of $1.64. However, since the bear market has begun to bite it has followed the rest of the market lower. GRS is currently listed on a number of exchanges although the bulk of the volume is on UpBit and Binance. There is strong volume and liquidity in the token on these exchanges but the tokens remain quite volatile.
Bitcoin ist so etwas wie die Mutter aller Kryptowährungen. Sie gibt es mittlerweile seit ca. neun Jahren und interessanterweise weiß man bis heute nicht, wer ihr eigentlicher Gründer ist. Das hat der Nachfrage aber nicht geschadet. Zum Ende des Jahres 2017 sah es sogar kurz danach aus, als würde er die 17500 € Grenze knacken. Leider hat das nicht geklappt und im April 2018 liegt der Kurs bei ca. 5000€.
The proof-of-stake is a method of securing a cryptocurrency network and achieving distributed consensus through requesting users to show ownership of a certain amount of currency. It is different from proof-of-work systems that run difficult hashing algorithms to validate electronic transactions. The scheme is largely dependent on the coin, and there's currently no standard form of it. Some cryptocurrencies use a combined proof-of-work/proof-of-stake scheme.[16]