Is buying and selling Bitcoin (and other cryptocurrency) legal for a student on F-1 Visa doing OPT in USA?
Given your clarification that you re only intending to use cryptocurrency as a capital asset & a long term investment vehicle, and not as a business day trading or trading for others, I would say this definitely is NOT illegal. The tax man says cryptocurrency is property. The IRS made this clear in Notice 2014-21.  As long as you report it every time you do transfer it and an income loss/gain is triggered, I see nothing wrong here.
"Traditional brokers There are tons of players in this market, especially in USA. You have traditional brokers, brokers tied to your bank and a bunch of startups. The easiest is probably a broker tied to your bank, because you probably don't have to wait to fund your brokerage account and can start trading immediately. Often the older/traditional brokers don't have very intuitive interfaces, it's the startups who do a better job at this. But honestly it doesn't really matter, because you can use reporting services that are different from the services you use to execute your trades. Meaning that you only use the interface of your broker to execute trades (buy or sell), and use third party services to monitor your holdings. Monitoring services: Google Finance, Yahoo Finance, Sigfig, Morningstar,... are services allowing you to monitor your holdings. But you can't execute trades with them. Start-ups: Then there are a bunch of startups that offer investment services besides the traditional brokers. Start-up > Robinhood The most ambitious one is Robinhood, which offers the same service as a traditional broker, but completely free (most of the traditional brokers charge a flat fee and/or percentage when buying/selling hodlings) and with an intuitive interface. They're mobile first, but announced they will be launching their service on the web soon. Start-up > Acorns Another popular, mobile-first start-up is Acorns. They offer a lazy-investing service which rounds your everyday purchases and uses the change to invest. It's great when investing is not on your mind, but you still want to invest without realizing it. Start-ups > Robo-advisors Robo-advisors auto-invest your money across a bunch of funds picked based on your risk profile. Because the robo-advisers are fairly new, they often have the most intuitive interfaces. These robo-advisors often don't allow you to pick individual holdings, so these services are best when you want to passively invest. Meaning you don't want to look at it very often, and let them do the investing for you. There are tons of robo-advisor start-ups: Betterment, Wealthfront, Personal Capital, Sigfig, FutureAdvisor,... Also bigger parties jumped on this trend with their offerings: Schwab Intelligent Portfolios, Ally Managed Portfolio, Vanguard Personal Advisor, etc. Summary: It's fun to pick individual stocks, but if you start out it can be overwhelming. Robinhood is probably the best start, they have reduced functionality, but gets you going with an attractive interface. But soon you'll realize it's extremely hard to beat the market. Meaning that hand-picking stocks statistically gives you a worse return than just buying into the general stock market (like S&P500). So you can decide to just buy one fund with a traditional broker that covers the general stock market. Or you can decide to try out one of the many robo-advisors. They haven't been around that long, so it's hard to tell how effective these are and whether they beat the market. If you're young, and you believe in start-ups (who often try to challenge the traditional players), try out one of the robo-advisors. If you want to play a bit and are addicted to your smartphone, try out Robinhood. If you are addicted to your phone, but don't want to check up on your investments all the time, go for Acorns. Of course you can combine all these. Lastly, there are tons of cryptocurrencies which might give you a large return. Tons of startups offer intuitive interfaces to trade cryptocurrencies like Coinbase, Gemini, Kraken. But beware, there is a lot of risk involved in trading cryptocurrencies, it's completely unregulated etc. But definitely check them out. Oh, and you can also invest by giving out loans through LendingClub, Prosper etc. Who can you trust? Above gives you an overview of your options intermingled with some reasoning. But regarding your question ""who can I trust"" in terms of advice, it's up to yourself. Most traditional broker services don't give you any advice at all, you're on your own. Robo-advisors don't give you advice either, but let their proprietary algorithm do the job. Are these reliable? Nobody can tell, they haven't been around long enough, and they need to go through a bear market (a crash) to see how they respond during rough times. Some robo-advisors offer you personal consultancy (I believe Sigfig and PersonalCapital) does this (limited to a few hours per year). But obviously they'll try to promote their robo-advisor services." Having freelanced myself in South America I could give you a sound advice BUT you would first need to answer some questions.  1) How long do you plan on being in South America? At the end of 2017 will you be back in Ireland or still being in South America? In other words was is your country of residence for tax purposes on Dec. 31 2017 ? That is the key element to consider. Link 2) In latin America you can freelance with a legal working permit BUT in all these countries more than 50% of the economy is under the table. In all these countries expatriate work under the table. The question you need to answer is then: Who will be your employer, a company or the owner of this company? Working undeclared in Latin America is very common, what are the risks? The legal risks depend on the country and their laws. In which country will you travel? How long will you stay there? You will have a tourist visa or a working visa? 3) An important detail, your health. Check how long you can be out of Ireland without loosing your social health benefits in Ireland? In my country, if I am abroad for more than 180 days, I loose my national health coverage. Evaluate the amount of days you will be out of Ireland and where you want to be on Dec. 31th. That could change a lot of things in your life. Do you want to know How to Buy Bitcoins or How to Make Money in Bitcoin Investments. First of all, you should know What is Bitcoin? and What is Cryptocurrency? Through our this https://www.youtube.com/watch?v=xDIRVGkeONY video link you will get all the information whatever you want to know about Bitcoins. https://www.youtube.com/watch?v=xDIRVGkeONY Paper money and coins cost real resources too, but it doesn't matter much that it costs resources, except maybe for the environment.  No institutions controlling the price and supply is a good thing. I prefer a currency in which the global market decides the price and not some government I don't trust that keeps printing more and more for decades, causing the currency to lose value over time.  Bitcoin and cryptocurrencies will never replace normal currencies, but they are already competing and it's good that governments and banks  don't have an oligopoly anymore.   Bitcoin is a great mix of a currency and safehaven for longterm inflation. It's easily transactable and divisible without a third party AND because it's scarce, yet more accessible than gold, it's a great place to store value to escape an economic crisis or simply monetary inflation.  Now you'll probably say, something volatile isn't safe enough for a safehaven. But I think the higher the price and the longer it exists the less volatile the bitcoin price will be and that the longterm trend will be up, even after it surpasses the marketcap of gold.  Meanwhile, cryptocurrencies are a great way to crowdfund interesting projects and create value out of nothing, enriching young smart people whom will be able stimulate the global economy. Yes, it does matter very much. There's a thing called fungible instruments. These are the instruments where it doesn't matter. E.g. most options I ever dealt with in the US are fungible no matter which US exchange you trade them on. A fungible instrument is an instrument where you buy 1 lot on exchange A, then sell 1 lot on exchange B, and as a result you have 0 lots.  With another instrument, you can buy 1 lot on exchange A, sell 1 lot on exchange B, and even tough they are the exact same thing, you now own 1, and owe 1 - they don't cancel each other out. Other than that, in different countries there are obviously different laws and regulations. For a small at home trader who just gambles for fun and isn't interested in negative positions (sell what you don't have), there isn't much of a difference . I think that's what the other answers are saying. Thank you. Added to my list. This is very very helpful. I knew about the blockchain and the currency. Unfortunately, I'm not a pedant about differentiating between them with capitalising the first letter. I do not, however, understand Ethereum very well at all. So will read up. "Income generated from online sales is not considered ""passive income"", so you need to be authorized to work in the U.S. Those without work authorization can acquire passive income (through investments, lending, competition/contest earnings, etc.) In order to sell products on eBay (the description you've given leads me to believe that this is operated as a business), you need to be authorized to work in the U.S., and register a business. See:" It's important to note that the US is also the country that taxes its expats when they live abroad, and forces foreign banks to disclose assets of US citizens.  Americans are literally the property of their government. America is a tax farm and its citizens can't leave the farm. Wherever you go, you are owned.  And that now appears to be true of your Bitcoin as well. Even if you spend 50 years outside the USA, your masters want a piece of what you earn.  Land of the Free.