Among the numerous websites providing Bitcoin exchange services, the positive reputation of CEX.IO makes it worth the trust of the users all over the world. With the customer base of over 1,000,000, the platform can be recognized as the one that can be relied on. Starting your Bitcoin trading on a platform with substantial history, you will benefit from a deep understanding of the market and customers’ needs.

Unfortunately despite having a dedicated US part of the site (link to http://www.etoro.com/usa) , eToro doesn’t seem to accept US clients at this time. Here’s a part of the Q&A section that deals with this question: ‘’As part of our ongoing optimization process currently underway in the US, we have temporarily suspended our service. Therefore, at this time we will not be accepting new clients or funds from existing US customers. While you’re here, you are welcome to continue experiencing eToro  through our practice mode, which will stay available and free to all.’’’

Full clients verify transactions directly by downloading a full copy of the blockchain (over 150 GB As of January 2018).[91] They are the most secure and reliable way of using the network, as trust in external parties is not required. Full clients check the validity of mined blocks, preventing them from transacting on a chain that breaks or alters network rules.[92] Because of its size and complexity, downloading and verifying the entire blockchain is not suitable for all computing devices.

Full clients verify transactions directly by downloading a full copy of the blockchain (over 150 GB As of January 2018).[91] They are the most secure and reliable way of using the network, as trust in external parties is not required. Full clients check the validity of mined blocks, preventing them from transacting on a chain that breaks or alters network rules.[92] Because of its size and complexity, downloading and verifying the entire blockchain is not suitable for all computing devices.
Poloniex was once the best cryptocurrency exchanges, before competitors like Bittrex starting offering superior services. Nevertheless Poloniex went through extremely fast traffic growth since the demise of its rival Cryptsy in 2016, and especially since the recent altcoin bubble of early 2017. Traffic has grown from 33 million monthly visits in November 2017 to 66 million in December 2017. Poloniex has the nicest trading interface out there, both for mobile and desktop users this will work wonders. Please note that because Poloniex is a pure "crypto" exchange, it is not possible to deposit government (fiat) currency. You'll need to first buy bitcoin elsewhere, and then deposit it to be able to tade. I've written a full analysis of Poloniex, further exploring the founders, users, security, fees, history, and alternatives.
Bitcoin offers benefits to merchants as well, as transactions that involve the digital currency are secure and irreversible. Without the risk of fraud or fraudulent chargebacks, merchants can offer their products at a discount thereby generating more sales or pocket the difference themselves. In addition, with card processors out of the picture, merchants can save on the percentage cut taken by Visa / MasterCard.

1.) Controlled supply: Most cryptocurrencies limit the supply of the tokens. In Bitcoin, the supply decreases in time and will reach its final number sometime around the year 2140. All cryptocurrencies control the supply of the token by a schedule written in the code. This means the monetary supply of a cryptocurrency in every given moment in the future can roughly be calculated today. There is no surprise.
One of Bitcoin’s most appealing features is its ruthless verification process, which greatly minimizes the risk of fraud. Since Bitcoin is decentralized, volunteers—referred to as “miners”—constantly verify and update the blockchain. Once a specific amount of transactions are verified, another block is added to the blockchain and business continues per usual.
Aside from the exchanges, you can also buy bitcoins on ebay and similar auction sites. Keep in mind that due to the possibility for chargebacks and fraud, bitcoin and other cryptocurrencies trade at a premium on ebay. Face to face meetups are another option to acquire bitcoins. Checklocalbitcoins.com for bitcoin sellers and buyers near your area. Always exercise caution when doing an offline exchange. Meet during the daytime and in places with a lot of people around. If possible, bring a friend.

Popular exchange Bitfinex has similar instructions and lets you trade BTC for Ethereum, Litecoin and Bitcoin Cash. It actually offers far more cryptocurrencies to trade for - dozens of them, in fact. Bitfinex also offers several more options for your orders, such as OCO, aka One Cancels Other - placing a pair of orders with the understanding that if one order is completed the other is immediately canceled. Gemini and Poloniex are two other fairly prominent bitcoin exchanges that let you trade for ethereum, while Kraken also offers Dash and Ripple. Trade fees vary from exchange to exchange.
In its early stages, the swings in Bitcoin price was usually so huge as every little event within the crypto space had very serious impact on the price of the cryptocurrency. As adoption grows and Bitcoin becomes more stable, price volatility has reduced considerably and experts think it is a better time to trade the cryptocurrency, compared to an earlier time.
The bitcoin blockchain is a public ledger that records bitcoin transactions.[65] It is implemented as a chain of blocks, each block containing a hash of the previous block up to the genesis block[a] of the chain. A network of communicating nodes running bitcoin software maintains the blockchain.[31]:215–219 Transactions of the form payer X sends Y bitcoins to payee Z are broadcast to this network using readily available software applications.
×