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.
After the U.S. government forced Swift to cut ties with more than 70 banks in Iran, Brad Garlinghouse, the CEO of Ripple Labs Inc., said that his company was gaining new customers because financial firms are seeking technology that is better, faster, and more stable than the Swift banking network, Bloomberg reported on November 13, 2018. Ripple CEO Addresses Rumors…
The good news: No advanced math or computation is involved. You may have heard that miners are solving difficult mathematical problems--that's not true at all. What they're actually doing is trying to be the first miner to come up with a 64-digit hexadecimal number (a "hash")  that is less than or equal to the target hash. It's basically guess work.

Although Bitcoin is innovative and massively influential, it has some problems that developers are trying to fix with their own products. There is an altcoin that makes faster transactions, there is an altcoin that is less volatile, there is an altcoin that is more private and so on. There are more than one and a half thousand altcoins on the market at the day this text is written, according to coinmarketcap.com. Altcoins are playing a very important role by expanding boundaries of blockchain possibilities and the scope of applications.
Transactions that occur through the use and exchange of these altcoins are independent from formal banking systems, and therefore can make tax evasion simpler for individuals. Since charting taxable income is based upon what a recipient reports to the revenue service, it becomes extremely difficult to account for transactions made using existing cryptocurrencies, a mode of exchange that is complex and difficult to track.[66]
While PayPie only has a market cap of $13.3 million at the time of writing (which in my opinion is heavily undervalued), they’re in the massive industry that is financial technology. Aside from being due for a technological overhaul, fintech is dead center in crypto’s cross hairs; the combination of finances and software is what blockchain was born to reinvent.
Bittrex has earned it's place as the new contender to the throne of world's largest crypto exchange. Years of hard work and some lucky circumstances (BTC-e shut-down, Poloniex exodus, Cryptsy) have compounded a steady inflow of new users. It is a great place to trade bitcoin and other cryptocurrencies. I'll let you read the detail in my Bittrex review, which has some important facts and analysis.
However, there are also many altcoins that don’t do much interesting at all. The vast majority of altcoins simply tweak some parameters that don’t matter much, or offer something that may sound useful but isn’t. If, for example, an altcoin has a greater total amount of coins, it just means each individual coin is worth less. If an altcoin finds blocks faster, it only means that a transaction requires more confirmations for a similar level of security.
What miners are doing with those huge computers and dozens of cooling fans is guessing at the target hash. Miners make these guesses by randomly generating as many "nonces" as possible, as fast as possible. A nonce is short for "number only used once," and the nonce is the key to generating these 64-bit hexadecimal numbers I keep talking about. In Bitcoin mining, a nonce is 32 bits in size--much smaller than the hash, which is 256 bits. The first miner whose nonce generates a hash that is less than or equal to the target hash is awarded credit for completing that block, and is awarded the spoils of 12.5 BTC.
Bitcoin solves the so called ‘’double spending problem’’ present with digital goods. For example, if I have an mp3 file or an ebook on my computer, I can freely copy that file a thousand times and send it to a thousand different people. For a digital currency, the possibility for unlimited copying would mean a quick hyperinflationary death. Bitcoin solves this by maintaining a peer to peer network and recording each transaction in a public ledger called the block chain. Say I send 1 bitcoin from my bitcoin address to my friend John. The bitcoin network records that transaction in the block chain and I no longer have possession of that bitcoin. The coin ‘’moved’’ from my bitcoin wallet to John’s wallet.
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