Founded in 2011, Kraken is the largest Bitcoin exchange in euro volume and liquidity and is a partner in the first cryptocurrency bank. Kraken lets you buy and sell bitcoins and trade between bitcoins and euros, US Dollars, Canadian Dollars, British Pounds and Japanese Yen. It’s also possible to trade digital currencies other than Bitcoin like Ethereum, Monero, Ethereum Classic, Augur REP tokens, ICONOMI, Zcash, Litecoin, Dogecoin, Ripple and Stellar/Lumens. For more experienced users, Kraken offers margin trading and a host of other trading features. Kraken is a great choice for more experienced traders. Check out the Kraken FAQ
All of those factors make mining cryptocurrencies an extremely competitive arms race that rewards early adopters. However, depending on where you live, profits made from mining can be subject to taxation and Money Transmitting regulations. In the US, the FinCEN has issued a guidance, according to which mining of cryptocurrencies and exchanging them for flat currencies may be considered money transmitting. This means that miners might need to comply with special laws and regulations dealing with this type of activities.
Als Einstieg wählen sie die Geschichte unseres Währungssystems, die mir die gewachsene Verflechtung von Staat und Banken klar gemacht hat. Sie gehen dann zur Entstehungsgeschichte des Bitcoins über und wie die Gemeinschaft in den ersten Jahren wächst. Wichtige Akteure, mit Ausnahme von Satoshi Nakamoto, dem Begründer des Bitcoin, haben sie direkt befragt, so dass man ein atmosphärisches Bild aus dieser Zeit bekommt. Sie erläutern die Nachteile des „normalen“ Zahlungsverkehrs per Kreditkarte und wie Bitcoin diese Probleme lösen, d.h. das gesamte Prozedere vereinfachen kann. Aber natürlich ist auch Bitcoin nicht die Lösung für alles, denn v.a. fehlt ihm noch das Vertrauen der Menschen als stabile Währung, die unabhängig von einer Regierung funktioniert. Dazu erläutern sie dann die Blockkette, die Technologie hinter allen Kryptowährungen. Diese „block chain“ ist im Grunde eine revolutionäre „Sozialtechnologie“, eine Art digitales, öffentliches Grundbuch, die viele der heutigen „Vertrauenspersonen“ - Banken, Versicherungen, Anwälte, Notare - überflüssig machen könnte. Und nicht nur diese, auch Teile des Regierungsapparates könnten schlicht verzichtbar werden. Sie erläutern, wie diese Blockkette durch das „Schürfen“ („Mining“) öffentlich digital verwaltet wird und gehen dann in den folgenden Kapiteln auf zwei sehr unterschiedliche Aspekte ein. Zum einen beschäftigen sie sich mit den Innovatoren, die das wirtschaftliche Potenzial erkannt haben und mit dieser Technologie reich werden wollen. Zum anderen sehen sie die 2,5 Milliarden Menschen, die kein Bankkonto haben und für Geldtransfers meist 20%, aber gerne auch mal 30% des Überweisungsbetrages abführen müssen. Die Armen in Afrika und Asien, die für Banken wegen ihres geringen Einkommens uninteressant sind, müssen andere Wege finden, um ihr Geld an ihre Familie zu senden und es gibt hier schon seit einigen Jahren spannende Ideen wie M-Pesa, die in einigen Ländern Afrikas Millionen Nutzer haben.
CoinMama is a veteran broker platform that anyone can visit to buy bitcoin or Ether using your credit card or cash via MoneyGram. CoinMama is great for those who want to make instant straightforward purchases of digital currency using their local currency. Although the CoinMama service is available worldwide, users should be aware that some countries may not be able to use all the functions of the site. CoinMama is available in English, German, French, Italian and Russian. Check out the CoinMama FAQ
Blockchains are secure by design and are an example of a distributed computing system with high Byzantine fault tolerance. Decentralized consensus has therefore been achieved with a blockchain.[29] Blockchains solve the double-spending problem without the need of a trusted authority or central server, assuming no 51% attack (that has worked against several cryptocurrencies).
It is important investors realize not all exchanges and brokers that offer delivery of the underlying Bitcoin are created equal. Some firms have fallen victim to theft by hackers who have stolen Bitcoin belonging to clients whose money was held at the exchanges. Meanwhile, other Bitcoin exchanges have gone bankrupt (as in the case of Mt. Gox),  as a result of fraud or mismanagement.
According to PricewaterhouseCoopers, four of the 10 biggest proposed initial coin offerings have used Switzerland as a base, where they are frequently registered as non-profit foundations. The Swiss regulatory agency FINMA stated that it would take a "balanced approach" to ICO projects and would allow "legitimate innovators to navigate the regulatory landscape and so launch their projects in a way consistent with national laws protecting investors and the integrity of the financial system." In response to numerous requests by industry representatives, a legislative ICO working group began to issue legal guidelines in 2018, which are intended to remove uncertainty from cryptocurrency offerings and to establish sustainable business practices.[50]

LocalBitcoin is a P2P Bitcoin exchange with buyers and sellers in thousands of cities around the world. With LocalBitcoins, you can meet up with people in your local area and buy or sell bitcoins in cash, send money through PayPal, Skrill or Dwolla or arrange to deposit cash at a bank branch. LocalBitcoins only take a commission of 1% from the sellers who set their own exchange rates. To ensure trading is secure, LocalBitcoins takes a number of precautions. To start, the platform rates each trader with a reputation rank and publicly displays past activities. Also, once a trade is requested, the money is held on LocalBitcoins’ escrow service. After the seller confirms the trade is completed the funds are released. If something does happen to go wrong, LocalBitcoins has a support and conflict resolution team to resolve conflicts between buyers and sellers. Check out LocalBitcoins FAQ

"There is a very high degree of risk involved in trading securities. With respect to margin-based foreign exchange trading, off-exchange derivatives, and cryptocurrencies, there is considerable exposure to risk, including but not limited to, leverage, creditworthiness, limited regulatory protection and market volatility that may substantially affect the price, or liquidity of a currency or related instrument. It should not be assumed that the methods, techniques, or indicators presented in these products will be profitable, or that they will not result in losses." Learn more.

I would recommend trying They’re a fairly new company, but their staff has a wealth of experience and are very knowledgeable. My experience with them thus far has been quite pleasant since the staff a eager to assist with any queries and their platform is quite simple to navigate. I also haven’t had any issues accessing my funds. They handle everything in a timely manner.
Before we take a closer look at some of these alternatives to bitcoin, let’s step back and briefly examine what we mean by terms like cryptocurrency and altcoin. A cryptocurrency, broadly defined, is virtual or digital money which takes the form of tokens or “coins.” While some cryptocurrencies have ventured into the physical world with credit cards or other projects, the large majority remain entirely intangible. The “crypto” in cryptocurrencies refers to complicated cryptography which allows for a particular digital token to be generated, stored, and transacted securely and, typically, anonymously. Alongside this important “crypto” feature of these currencies is a common commitment to decentralization; cryptocurrencies are typically developed as code by teams who build in mechanisms for issuance (often, although not always, through a process called “mining”) and other controls. Cryptocurrencies are almost always designed to be free from government manipulation and control, although as they have grown more popular this foundational aspect of the industry has come under fire.
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]