Steindorff: QTUM is an emerging smart-contract platform with a strong team and promising future. You can think of QTUM as a bitcoin/ethereum hybrid in the sense that the platform enables smart contracts to be built atop bitcoin’s UTXO blockchain. This is an important technological achievement as it enables mobile and IoT compatibility for smart contract backed decentralized applications, a feature not currently available with Ethereum. Mobile compatibility will accelerate the proliferation of smart-contract adoption among businesses while simultaneously broadening its use case as a digital currency via mobile friendly QTUM wallets. Additionally, QTUM has shifted away from the Proof of Work consensus model (Bitcoin/Ethereum) and instead leverages the Proof of Stake model which rewards QTUM token owners for confirming transactions via “staking” instead of “mining.” Without getting into too many details this method is both more environmentally friendly and less prohibitive for individuals to participate than the Proof of Work method.  Since launching in early 2017 QTUM has garnered a massive community throughout the Asia-Pacific and the United States. We believe the QTUM team is unrivalled in Asia and their protocol stack has the potential to become the dominant Smart Contract platform of Asia. 
I'd suggest the safest way to play the cryptocurrency market is through the graphic processing unit (GPU) manufacturers, NVIDIA (NASDAQ:NVDA) and Advanced Micro Devices (NASDAQ:AMD). Both NVIDIA and Advanced Micro make GPUs that cryptocurrency miners use to validate transactions. Being the first to solve these complex mathematical equations, which are a product of encryption within a blockchain, entitles crypto miners to a block reward that's paid out in tokens of the virtual currency being mined. Though the margins on cryptocurrency mining have come down significantly from where they were in December 2017, it's still quite profitable for miners to validate transactions and collect their reward. This puts NVIDIA's and AMD's GPUs in high demand.
Personally, for myself, a quick back of the napkin calculation that I can do to estimate the possible future value of bitcoin is to see what the market has valued all of the gold in the world at, and use this as a rough guiding principle for seeing how much appetite the world currently has for something that can hedge against other currencies and holds similar characteristics to gold as a store of value. I can see that the total value of all the gold in the world is over 8 trillion dollars, and consequently, if bitcoin were to reach that same total valuation, each bitcoin, assuming 21 million eventual bitcoins, would be worth approximately $400,000. Dividing this by bitcoin’s current value, I can see that there’s still room for approximately 150X gains. This means that if I truly believe this is a possible outcome for bitcoin, then as long as I believe this outcome has more than a 0.66 percent chance of happening, or 1/150 chances of success, it would be an +EV bet to make.
Investments in cryptocurrencies are connected with the possibility of a loss for the Users, even with a small change in the price of the underlying instrument in the form of cryptocurrency. It is not possible to make a profit on cryptocurrencies without exposing yourself to the risk of incurring a loss. When making investment decisions, the User should be guided by his own judgment. More information is available in theDeclaration of Investment Risk.
Always create a profit/sell ratio for Bitcoin, because most of your profits from altcoins will first be turned into Bitcoin. Use the initial price you paid for Bitcoin for this, because if you use the price of Bitcoin when you took profits, you’re misleading yourself and increasing your risk exposure. This is because the price of Bitcoin has likely increased as well during the time it took for your altcoin value to increase.
Bitcoin and other cryptocurrencies are continuing to rise in popularity, drawing both first-time and experienced investors. While the process to buy and sell Bitcoin has been simplified over the past few years, many people still find it confusing. With banks, credit card issuers, and governments worldwide getting involved with rules and regulations on how the currency can be bought and used, it’s no wonder some people are wary to invest in cryptocurrencies.

I ended up wiring several thousand dollars to an incredibly sketchy Russian exchange,, to purchase my first few bitcoins at around $1000 apiece. Before I knew it, I was addicted to constantly checking the price, and spent a full 48 hours doing nothing at the height of the November 2013 bubble doing nothing but refreshing and seeing how my investments were doing.

Ripple (XRP) is a more recently popular cryptocurrency, although some argue that it can't really be called a cryptocurrency at all. It does, however, have a market cap of $19.2 billion as of this writing, 3rd largest amongst cryptocurrencies. Ripple is meant to act as something of a payment processing system that could allow for instant international money transfers. It has partnered with several notable companies, including American Express.

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