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      "body": "Hasankeyf is loacaleted in eastern of Turkey.  Hasankeyf has a history spanning millennia, with excavations around the citadel dating back to 3000BCE, and most cliff dwellings being around 2,000 years old. It was perhaps inhabited first by Assyrians and/or Urartians, and then most certainly by successive Roman, Byzantine, Turkic, and Arabic dynasties. ![DSC_0017.JPG](https://res.cloudinary.com/hpiynhbhq/image/upload/v1520356223/ylvfrtor6nvzfibkpion.jpg)\n![DSC_0019.JPG](https://res.cloudinary.com/hpiynhbhq/image/upload/v1520356295/rxafxz4fqxvldmd2fudh.jpg)\nOld architecture of Hasankeyf standing today bears the signature of the Ayyubid sultan el-Melik el-Adil Sultan Salesman (1378-1432).\n\nYou can see photos of there from my view;\n![DSC_0021.JPG](https://res.cloudinary.com/hpiynhbhq/image/upload/v1520356436/px2g9tjj9xqr5elvzuda.jpg)\n",
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      "body": "Bitmain made between $3 billion to $4 billion in operating profits last year, according to Bernstein Research.\n![farm-2852024_960_720_resize_md.jpg](https://res.cloudinary.com/hpiynhbhq/image/upload/v1520269321/njcpwepelkf7lipmxaar.jpg)\nBitmain, the Beijing-based bitcoin mining company which dominates the bitcoin \"mining\" industry, made $3 billion to $4 billion in operating profits in 2017, according to Bernstein Research, the CNBC reported.\n\nThe estimates are based on conservative estimates of gross margin of 75 percent and operating margin of 65 percent.\n\nThe analysis also compares Bitmain to Nvidia, a US artificial intelligence company, with the two companies reporting profits of approximately the same amount last year.\n\n\"But Bitmain achieved this in merely four years, while it took Nvidia 24 years to get here,\" Bernstein said.\n\nBitmain, a privately-held and secretive company, was founded by Jihan Wu and Micree Zhan in 2013.\n\nThe company has since grown into one of the leading firms involved with bitcoin mining, the process of using computing power to generate bitcoins. Wu is also a widely-followed figure in the bitcoin world.\n\nBitmain made mining faster\nWhen Bitcoin first started, ordinary video graphics cards could be used to process computations needed to mine the cryptocurrency.\n\nThe company turned bitcoin mining into a specialized process in 2013 by selling application-specific integrated circuits, or asic, computer chip cards that could mine bitcoin 50 times faster than conventional video graphics cards.\n\nToday, Bitmain sells Antminer bitcoin mining rigs that can cost several hundred dollars to a few thousand dollars each.\n\nThe company also operates mining pools in which participants collaborate on bitcoin mining to cut costs.\n\nIt is estimated that Bitmain has 70 to 80 percent of market share in bitcoin miners and asics.\nMost of Bitmain's income was generated by selling miners powered by the company's chips, according to Bernstein.\n\nIt is predicted the rest was generated by mining itself to a large extent and, to a much lesser extent, through collecting management fees from the mining pools it operates and renting out the mining power of its mining farms through cloud services.\n\nMuch of the growth in mining revenue came from the exponential rise in bitcoin prices, Bernstein said. Its analysis also said that \"Bitmain shrewdly adjusts the prices of miners according to bitcoin prices.\"\n\nAs the price of bitcoin surged toward $20,000 late last year, the price of Bitmain's AntMiner S9 jumped near $5,000. Production costs remained the same, according to Bernstein.\n\nBitmain stays ahead of the game\nHowever, longer-term growth is not guaranteed, especially in the volatile cryptocurrency market.\n\nBitcoin has lost half its value since the start of 2018 and there are worries about a regulatory crackdown.\n\nSo far Chinese authorities have taken some of the strongest actions against cryptocurrencies by banning initial coin offerings and causing local bitcoin exchanges to close.\n\nBitmain has taken significant steps to preserve its competitive advantage. It has launched a mining pool subsidiary last April in Israel, and is opening mining farms in Canada and Switzerland, as well as regional headquarters in Singapore.\n\nIt is also widening its business to other cryptocurrencies such as Ethereum and Monero.\nSource:https://interestingengineering.com/bitcoin-mining-company-bitmain-made-almost-4-billion-in-profits-in-2017",
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      "body": "Hi! I am a robot. I just upvoted you! I found similar content that readers might be interested in:\nhttps://www.theguardian.com/technology/2018/jan/29/cryptocurrencies-bitcoin-blockchain-what-they-really-mean-for-our-future",
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      "body": "Digital currencies such as bitcoin have caused a financial frenzy. Alex Hern explains what they are – and whether this is the end of ‘real’ money\n![5000.jpg](https://res.cloudinary.com/hpiynhbhq/image/upload/v1520268816/oxvbojtdg2ulat27ksgh.jpg)\n\nWhat is a cryptocurrency? Is it like bitcoin?\nIn a word, yes. Bitcoin was the first cryptocurrency, and is still the biggest, but in the eight years since it was created pretenders to the throne have come along.\n\nAll of them have the same basic underpinnings: they use a “blockchain”, a shared public record of transactions, to create and track a new type of digital token – one that can only be made and shared according to the agreed-upon rules of the network, whatever they may be. But the flourishing ecosystem has provided a huge amount of variation on top of that.\n\nSome cryptocurrencies, such as Litecoin or Dogecoin, fulfil the same purpose as bitcoin – building a new digital currency – with tweaks to some of the details (making transactions faster, for instance, or ensuring a basic level of inflation).\n\nOthers, such as Ethereum or Bat, take the same principle but apply it to a specific purpose: cloud computing or digital advertising in the case of those two.\n\nWhat exactly is a bitcoin? Can I hold one?\nA bitcoin doesn’t really exist as a concrete physical – or even digital – object. If I have 0.5 bitcoins sitting in my digital wallet, that doesn’t mean there is a corresponding other half sitting somewhere else.\n\nWhat you really have when you own a bitcoin is the collective agreement of every other computer on the bitcoin network that your bitcoin was legitimately created by a bitcoin “miner”, and then passed on to you through a series of legitimate transactions. If you want to actually own some bitcoin, there are exactly two options: either become a miner (which involves investing a lot of money in computers and electricity bills – probably more than the value of the bitcoin you’ll actually make, unless you’re very smart), or simply buy some bitcoin from someone else using conventional money, typically through a bitcoin exchange such as Coinbase or Bitfinex.\n\nA lot of the quirks of the currency come down to the collective agreement about what constitutes “legitimacy”. For instance, since the first bitcoin was created in 2009, the total number in existence has been growing slowly, at a declining rate, ensuring that at some point around 2140, the 21 millionth bitcoin will be mined, and no more will ever be created.\n\nIf you disagree with that collective agreement, well, there’s nothing stopping you from splitting with the wider network and creating your own version of bitcoin. This is what’s known as a “fork”, and it’s already happened multiple times in the past (that’s what competitors such as Litecoin and Dogecoin are). The difficulty is persuading other people to follow you. A currency used by just one person isn’t much of a currency.\n\nWhat can I actually do with cryptocurrencies?\nIn theory, almost anything that can be done with a computer could, in some way, be rebuilt on a cryptocurrency-based platform. Building a cryptocurrency involves turning a worldwide network of computers into a decentralised platform for data storage and processing – in effect, a giant hive-mind PC (that this no longer sounds like it has much to do with “currencies” is part of the reason some instead suggest the name “decentralised apps” to cover this sector).\n\nWe’ve already seen proposals for YouTube clones, collectible card games and digital advertising exchanges built on top of cryptocurrencies: “x but on the blockchain” is the new startup pitch du jour, now that “Uber for x” and “x but on the iPhone” are passé. There’s already Dentacoin (Yelp for Dentists but on the blockchain), Matchpool (Tinder but on the blockchain) and even Cryptokitties (Tamagotchis but on the blockchain). \n\nIn practice, however, the available uses are rather more limited. Bitcoin can be used as a payment system for a few online transactions, and even fewer real-world ones, while other cryptocurrencies are even more juvenile than that. The excitement about the field is focused more on what it could become than what it actually is.![2.JPG](https://res.cloudinary.com/hpiynhbhq/image/upload/v1520268976/uzjcph9anvpngiwwwykl.jpg)\n\nSource: TheGuardian \nhttps://www.theguardian.com/technology/2018/jan/29/cryptocurrencies-bitcoin-blockchain-what-they-really-mean-for-our-future\n\n",
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