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Компания "Блокчейн" известна прежде всего своим кошельком в криптовалюте. Сегодня компания также запускает биржу, чтобы вы могли покупать и продавать криптовалюту, не прибегая к услугам сторонних бирж.
Биржа называется The Pit и ориентирована на массовое применение и простоту использования. Она доступна в 200 странах с поддержкой нескольких криптовалют и фиатных валют.
The Pit в настоящее время поддерживает USD, EUR и GBP посредством банковских переводов. Также вы можете купить и продать несколько криптоактивов - BTC, ETH, BCH, LTC, USDT и PAX.
They’re not called Zuckerbucks but Facebook just reinvented digital money. Facebook’s Libra cryptocurrency that will launch early next year is more like PayPal than Bitcoin — it’s designed to be easy enough for everyone to use. But it’s still complicated to understand so I’m going to break it down for you nice and simple.
Libra is like cash that lives inside your phone. How do you buy Facebook’s cryptocurrency? Starting in 2020, you’ll be able to purchase Libra through Libra wallet apps on your phone or from some local grocery and convenience stores. You cash in your local currency like dollars and get nearly the same number of Libra coins, which are represented by this wavy three line emoji instead of the $ symbol. But first you’ll have to verify your identity with a photo.
You’ll also be able to send and request money from friends like you would with Venmo or PayPal. It’s as easy to send Libra as it is a message. In fact, Facebook is building its own Libra wallet app called Calibra that will live inside of WhatsApp, Facebook Messenger, and its own standalone app.
But how does the Libra cryptocurrency technically work…without a bunch blockchain buzzwords? Libra is coded to have a stable price, be secure, and be controlled not just by Facebook.
Instead, Libra is run by the 28 member Libra Association that it hopes will grow to 100 members by the time it launches in the first half of 2020. Financial companies like Visa and MasterCard, merchants and apps like eBay and Lyft, venture capital funds like Andreessen Horowitz and Union Square Ventures, and non-profits like Kiva are all members. They each paid at at least $10 million to get one vote on the Libra council that controls what happens to the currency. They’ll be responsible for checking to make sure Libra transactions are real and creating the Libra Reserve
Each time you cash in a dollar, that money goes into big bank account called the Libra Reserve that creates and sends you roughly one Libra token. The Libra Reserve is made up of a collection of the most stable international currencies like the US Dollar, British Pound, the Euro, and the Japanese yen. The idea is that even if one of those currencies goes up or down in price, the value of the Libra will stay stable. That way, shops will accept the Libra as payment without worrying the value of the coin will drop tomorrow. Big swings in price are why older cryptocurrencies like Bitcoin or Ethereal haven’t grown popular as payment methods. Libra can also handle 1000 transactions per second, while Bitcoin can only handle 7.
So how do Facebook and the other Libra Association members earn money? Off of interest on all the assets held in the Libra Reserve. After the Libra Association pays for its operations and investments in technology, member earns a cut of the remaining interest in proportion to how much they invested when they joined. If Libra gets popular, tons of people cash in, and the reserve grows huge, the Interest could add up to serious revenue for Facebook.
But there’s also a subtle second way Facebook could get rich from Libra. If the currency makes it easier for small businesses to accept payments online, they’ll sell more stuff. They’ll then have extra money to spend on Facebook ads, which will make it extra quick to buy things with Libra. 90 million small businesses already have Facebook Pages, but only Facebook only has 7 million advertisers. If it can turn more of those local merchants into ad buyers, Facebook’s revenues could skyrocket.
The big risk of Libra is that anyone will be able to develop apps for it. That could lead to another Cambridge Analytica situation. But instead of some shady app maker snatching your personal info, they could steal your digital currency. Facebook and the Libra Association say they won’t vet Libra developers, which leaves the door wide open to abuse. And if people get scammed, they’ll blame Facebook.
But if Facebook succeeds, the real win could be for the 1.7 billion people left in poverty with no bank account around the world. They’re exploited by international money sending services like Western Union or Monogram that charge steep 7% fees that take $50 billion away from families per year. And if they’re mugged, they could lose all their money since they have nothing stored online. All they’ll need is a photo ID and Libra could give them an alternative to a bank account that’s tougher to steal and could make it easy to pay for what they need.
There are plenty of reasons to worry that Libra could give Facebook and other tech giants more power or lead to people getting scammed. But it could also give disadvantaged people everywhere a way to join the modern economy. And at least it’s not called FaceCoin.
Fortnite, the free multi-player survival game, has earned an astonishing $1 billion from in-game virtual purchases alone. Now, others in the gaming industry are experimenting with how they too can capitalize on new trends in gaming.
Mythical Games, a startup out of stealth today with $16 million in Series A funding, is embracing a future in gaming where user-generated content and intimate ties between players, content creators, brands and developers is the norm. Mythical is using its infusion of venture capital to develop a line of PC, mobile and console games on the EOSIO blockchain, which will also be open to developers to build games with “player-owned economies.”
The company says an announcement regarding its initial lineup of games is on the way.
Mythical is led by a group of gaming industry veterans. Its chief executive officer is John Linden, a former studio head at Activision and president of the Niantic-acquired Seismic Games. The rest of its C-suite includes chief compliance officer Jamie Jackson, another former studio head at Activision; chief product officer Stephan Cunningham, a former director of product management at Yahoo; and head of blockchain Rudy Kock, a former senior producer at Blizzard — the Activision subsidiary known for World of Warcraft. Together, the team has worked on games including Call of Duty, Guitar Hero, Marvel Strike Force and Skylanders.
Galaxy Digital’s EOS VC Fund has led the round for Mythical. The $325 million fund, launched earlier this year, is focused on expanding the EOSIO ecosystem via strategic investments in startups building on EOSIO blockchain software. Javelin Venture Partners, Divergence Digital Currency, cryptocurrency exchange OKCoin and others also participated in the round.
It’s no surprise investors are getting excited about the booming gaming business given the success of Epic Games, Twitch, Discord and others in the space.
Epic Games raised a $1.25 billion round late last month thanks to the cultural phenomenon that its game, Fortnite, has become. KKR, Iconiq Capital, Smash Ventures,Vulcan Capital, Kleiner Perkins, Lightspeed Venture Partners and others participated in that round. Discord, a chat application for gamers, raised a $50 million financing in April at a $1.65 billion valuation from Benchmark Capital, Greylock Partners, IVP, Spark Capital and Tencent. And Dapper Labs, best known for the blockchain-based game CryptoKitties, even raised a VC round this year — a $15 million financing led by Venrock, with participation from GV and Samsung NEXT.
In total, VCs have invested $1.8 billion in gaming startups this year, per PitchBook.
Bitcoin is the ultimate talk these days. By this time everybody knows bitcoins are digital currencies run by a network people, and that can be sent without any clearing house. It’s not controlled by any issuing authority like the goverment or a bank. Being only around 9 years old, the bitcoin is the most highly valued cryptocurrency out there in the market. Blockchain is the core technology of bitcoin. But what is bitcoin & blockchain? Also how does it matter?!
What is bitcoin and blockchain?
In simple format, blockhain is the combination of math and cryptography! Its a set of blocks which contains values inside it and are chained together. Precisely, cryptography is the art of writing or solving codes. It helps in creating a particuar encrypted data that can only be processed by a reciver for whom it is intended to. The converted data by an unauthorized user will be mismatched or maybe presented with the encrypted format which will be totally unreadable.
Modern form of technology has allowed humans to transact files of all possible formats with the help of internet and network sharing, no matter how far they are. Yes we also have transacted money with the help of online payment gateways. But the only thing is that, there isn’t any instant transaction of money that’s happening, as they need to be verified by a 3rd party authority. Which might involve high transaction costs and requires a lot of documents to be submitted in prior to gain access to online transaction.
THIS IS WHAT THE BLOCKCHAIN TECHNOLOGY IS TRYING TO SOLVE BY PROVIDING OPEN DECENTRALISED DATABASE.
Blockhain technology is going to completely change the way we had been transacting data. It has an upper hand of security by avoiding financial frauds, because all the transaction data are noted on a public ledger, of which one copy is stored on the personal computers of every node on the blockchain network. And which means anyone, anywhere having internet access can view the ledger. Infact the ledger contains information of every transaction from the very beginning dating back to the very first bitcoin transaction. Leading to a total size of 150 GB of DATA as of Jan 2018!
But how can an online database, that shares its ledger stays hack proof? The answer is its millions of users. Its like every ledger copy is available on the personal computers of every peer on the bitcoin network. So nobody can cheat on writing the data to the ledger. Infact Every block of data has a timestamp and also has a link to its previouse block, and it maintains them in a chronological order. The data can be viewed and added, but cannot be edited. Which is done using cryptography.
SHA-256 Cryptographic Hash Function:
One of the major implementations of block chain is the bitcoin cryptocurrency. For which now leads us to the concept of bitcoin minning. The bitcoins that are sent from A to B are verified by bitcoin miners, by solving a series of specialized math problems. In order to decide which block should be added to the blockchain, a serious contest is held between miners. One has to solve certain math problems created by a cryptographic hash function. More specificaly, the SHA-256.
There is no possibility to solve this problem logically, rather by a series of guesses, the answer can be obtained. Consider it like a combination of string on which guessed rightly will allow you to add the block to the blockchain and get you rewarded with bitcoins. But like I said it needs to be guessed and no logical solution is available. So it totally depends your computational power, which decides the Hash Rate. The more computational power, the faster you will arrive at the required combination. Also the hash rate is nothing but the number of guesses per second.
HASH RATE = NUMBER OF GUESSES PER SECOND
Each Bitcoin miner is competing with all the other miners over the network to be the first one to mine. Because In exchange for validating the transactions the Bitcoin miners are rewarded with bitcoins of thousands of $s worth. Which also means, rewarding = creation of new bitcoins. Believe me or not currently the number of computers that are minning bitcoins are over 1000 times more powerful than the world’s top 500 supercomputers combined. Which leads us to the conclusion of how secure the Bitcoin network is. Infact for a threat to disrupt the network, they might atleast need half the computational strength, which is definetly not going to be possible.
Each Bitcoin technology can be trusted so long as you know how it works and the trust of the people involved. All of the thefts in recent years have been the result of carelessness on the part of bitcoin owners. Bitcoin is atleast as of now experimental, it might be a good investment or might turn out to be a bubble that can burst out any soon. What are your thoughts on the future of bitcoins? Do share on the comments below.
There’s been a lot of hand-wringing about the future of blockchain lately.
With cryptocurrency prices reaching all-time highs and total market capitalization topping $800 billion recently, everyone wants to know if we’re witnessing the second coming of the internet or the craziest bubble of all time. If you ask me, it’s a bit of both.
Today, we have blockchain projects raising hundreds of millions of dollars with little more than a whitepaper — no product, no traction, just an idea and some technical specifications. You don’t need to be in venture capital to understand this level of speculation is unsustainable. At the same time, however, we saw much the same in the early stages of the internet, and look where we are today.
I think the cryptocurrency insanity we’re seeing right now is overshadowing a lot of the potential of the underlying architecture and technology. Market speculation aside, when I look at blockchain today, I see a very exciting technology that stands to dramatically reshape our increasingly digital world.
But that doesn’t mean it will happen overnight. When CryptoKitties, a seemingly useless game for breeding, buying and selling virtual cats, can bring the world’s most promising blockchain network to a standstill, it’s clear we still have a long way to go before this technology is ready for major, real world applications.
To get there, creative and enterprising developers must overcome three major limitations that exist at the very core of blockchain: brutal latency, high compute costs and limited storage. Until then, the hundreds of billions in investment dollars flowing into cryptocurrencies like Bitcoin, Ethereum, Litecoin and others will remain little more than speculative bets. What’s more, if blockchain technology doesn’t soon catch up with investor exuberance, a major market correction is all too likely.
Brutally low latency
One of blockchain’s greatest innovations is the way it decentralizes trust by taking a consensus-based approach to verifying transactions of every kind. While this creates massive value, it also comes at a massive cost: latency — and lots of it.
That’s because when transactions are posted to the blockchain, all nodes on the network are involved in verifying and recording them. It’s a slow and redundant process that demands a great deal of processing power. It also runs counter to everything we have come to expect from software systems and the general internet. While the entire infrastructure of the internet is bending toward real time, blockchain is inherently slow.
You don’t need to be in venture capital to understand this level of speculation is unsustainable.
If blockchain is ever going to achieve widespread adoption, it needs to get a lot faster. Redundancy might be a key feature, but low latency will always be considered a bug now that we’ve all been conditioned to expect real-time interactions with technology.
High cost to compute
It’s a great irony that right at the very moment everyone is talking about unlocking parallelization and writing multi-threaded and hyper-efficient code, we suddenly have to figure out how to write efficient single-threaded code again.
This goes back to the distributed nature of blockchain’s architecture and the consensus mechanisms that verify activity on the blockchain. In this environment, the infinite parallel execution that comes from every node on the network computing every transaction means that compute costs are extremely high. In other words, there is very little excess compute power available to the network, making it an exceptionally scarce (and therefore expensive) resource.
It’s a fascinating challenge. Programmers today are used to having access to cheap and virtually unlimited processing power. Not so with blockchain.
Today, we’re seeing all this effort to relearn how to write extremely efficient software. But efficient code will only get us so far. For blockchain to gain widespread adoption, processing power will need to get much cheaper.
Adding more computers does not solve the problem; quite the opposite. The more computers on the network, the more nodes required to sync with the latest transaction history.
Highly limited storage
Similar to the way processing power on blockchain is limited and expensive, the same goes for storage.
On the blockchain, storage comes in blocks, and there’s only so much data that can fit into any given block. What’s more, the number of blocks that can be created is limited. Both of these are a consequence of every block needing to be verified and synced across every node on the network. As noted earlier, this places major limitations on processing speed and power.
It also raises important questions about how to monetize storage. With cloud platforms, you pay a monthly or annual fee for up to an infinite amount of storage. It’s all yours — as long as you keep paying. When the subscription expires, you can renew or lose access to your files (i.e. the files are deleted).
With blockchain, this model breaks down completely. Blockchain databases store the data indefinitely; it begs the question: How can you possibly go about pricing it? The data storage costs must be paid up front and they must cover not just that month but all months and years to come.
What’s the time value of data? It’s yet another open question in desperate need of a creative solution.
IOTA is a cryptocurrency, but that doesn’t tell you much. It’s very different from other forms of digital money like Bitcoin, Ethereum, Ripple, and Dash — it’s designed for the Internet of Things (IoT). Its developers see a future where machines trade resources (electricity, storage, bandwidth, data, etc.) and services with each other using IOTA as payment.
So what is IOTA, exactly? How does it work, and what are its advantages over other cryptocurrencies?
IOTA solves many of the problems other cryptocurrencies face. This is because it’s not based on a blockchain but rather on a directed acyclic graph (DAG), referred to as the Tangle.
The result? All transactions are free. You don’t have to pay a single cent when using IOTA, whereas sending someone a Bitcoin can cost a few bucks these days. And the transaction fee associated with Bitcoin increases as more people use the cryptocurrency. Not so with IOTA, which will stay free regardless of how popular it may become.
The free nature of IOTA opens the door to micropayments, which will be important as the IoT industry develops and grows. Bitcoin and other cryptocurrencies fail in this area: when sending a small amount of money to someone, you have to pay a transaction fee that can be many times larger than the payment.
In addition to being free, IOTA has room to grow. With Bitcoin, the more transactions there are, the slower the system gets. Scalability is one of the biggest problems with Bitcoin, which led to the introduction of Bitcoin Cash. IOTA is different, as the network speed increases when more users are making transactions.
What is IOTA, how was it created, and where can I buy it?
IOTA first came onto the scene in 2014. It’s not mined like the majority of other cryptocurrencies. All IOTAs that will ever exist have already been created with the genesis transaction. This means the total supply of coins will always stay the same.
And how much is the total supply? A lot — exactly 2,779,530,283,277,761 coins. IOTA is designed for machines, so the high supply makes the cryptocurrency optimal for nanotransactions.
Getting your hands on IOTA isn’t as straightforward as buying Bitcoin — you can’t buy it directly with your credit card. You first have to get a cryptocurrency like Bitcoin or Ethereum and then transfer it to an exchange that supports IOTA, where you can trade one cryptocurrency for the other. Binance is a great option for US citizens, while those in Europe and other regions should also check out Bitfinex.
Is IOTA a good investment?
What is IOTA’s mission? Namely to become the backbone of IoT. On the other hand, Bitcoin aims to become a globally adopted currency that could improve or even replace conventional money, and Ripple mainly serves as a payment network for financial institutions. Nevertheless, the majority of people today still only see cryptocurrencies as an investment opportunity.
IOTA is the seventh largest cryptocurrency in the world by market cap. At the time of writing, one IOTA will set you back around $5 — see up to date price below — making it far less valuable than Bitcoin.
Is IOTA a good investment? That question is almost impossible to answer. Financial experts all have their own views, but the fact is that no one knows in which direction the price will move.
But so far, IOTA has proven to be a fantastic investment. If you had bought $1,000 worth of IOTAs in July 2017 when you could get one for around $0.40, you would now have $12,500. That’s a fantastic return on investment, and a remarkably quick one. Try putting $1,000 in a savings account at your local bank and check how much interest you’ll get after only six months — not much.
IOTA’s value has increased dramatically in recent months, but that doesn’t mean the trend will continue in the future. Some financial experts see cryptocurrencies as a bubble that will eventually pop, while others still believe that they should be a part of everyone’s investment portfolio.
You should never invest more money into cryptocurrencies than you can afford to lose.
So, a word of caution: never invest more money into cryptocurrencies than you can afford to lose. They are extremely volatile — value goes up and down a lot — making them less stable than standard currencies like dollars and euros.
These are only a few basic facts about IOTA. The technology is still relatively new, and while we may treat it primarily as an investment opportunity today, IOTA might soon become a bigger part of our daily lives.
Although people mostly talk about Bitcoin (and occasionally Ethereum, Litecoin, and Dash), there are more than 1,000 cryptocurrencies out there. Some could impact our lives in major ways, while others will quickly be forgotten. It’s hard to predict which camp IOTA will fall in.
Сборы и низкая скорость обработки затрудняют использования биткоина как платёжного средства.
Организаторы The North American Bitcoin Conference, которая пройдёт в Майами 18-19 января, прекратили принимать криптовалюты в качестве оплаты за билеты. Такой шаг команда объяснила перегруженностью сети и необходимостью ручной обработки платежей при оплате криптовалютами.
В разговоре с Bitcoin.com организатор конференции Мо Левин (Moe Levin) уточнил, что определённую роль в принятии такого шага сыграли низкая скорость обработки платежей и высокие транзакционные сборы.
Низкая скорость обработки и высокая комиссия нередко становятся препятствием для компаний, желающих принимать криптовалюты в качестве оплаты. По этой причине в декабре 2017 года от оплаты в биткоинах отказалась игровая платформа Steam. Microsoft временно приостанавливала приём биткоинов в своём магазине приложений, но в начале января 2018 года вновь возобновила его.
По данным отраслевого сайта BitInfoCharts, которые приводит CNBC, за последние три месяца средняя ставка комиссии по операциям с биткоинами достигла $55. На подтверждение одной транзакции требуется в среднем 51 минута, свидетельствуют данные Blockchain.info.
- Организатор конференции по криптовалютам в Майами прекратил принимать биткоины к оплате изза высокой комиссии
- использование биткоина как платёжного средства
- низкая скорость обработки
- Организатор конференции по криптовалютам
- Moe Levin
- транзакционные сборы
- низкая скорость обработки платежей
- организатор конференции Мо Левин
- The North American Bitcoin Conference
- Bitcoin Conference
- American Bitcoin Conference
- криптовалюта в качестве оплаты за билеты