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Main Bitcoin

Where Is The Main Bitcoin Database?

Where Is The Main Bitcoin Database?

The bitcoin database is called the blockchain, and it is shared among all of the nodes in the bitcoin network. It is about 72GB as I write this, see this chart . If you want to download the blockchain, install and use bitcoin core to pull it down. To peruse the blockchain, use any of the web sites that make it accessible, like Block Explorer or Blockchain . Bitcoin is a decentralized currency, i.e. each participant (coin owner) in the bitcoin network maintains a copy of the database (or ledger in bitcoin terms). Bitcoin orders are broadcast across the network, to every other bitcoin participant who has the bitcoin software running. Each of these participants will check their local copy of the database and verify the order. The process of verifying the payment is called mining. Bitcoin is a distributed network. All transactions are stored on a public ledger called blockchain. The blockchain entries are secured with cryptography. A hash is generated for each block that also contains the previous block hash, so, when a block is confirmed, with the hash, it cannot be altered. All nodes of the network (miners and wallets), have a copy of the blockchain, which is always updated. So there is no database and no administrator to care about the database. Continue reading >>

Bitcoin - Wikipedia

Bitcoin - Wikipedia

Unspent outputs of transactions denominated in any multiple of satoshis [3] :ch. 5 12.5 bitcoins per block (approximately every ten minutes) until mid 2020, [7] and then afterwards 6.25 bitcoins per block for 4 years until next halving. This halving continues until 2110–40, when 21 million bitcoins will have been issued. ^ The symbol was encoded in Unicode version 10.0 at position U+20BF ₿ BITCOIN SIGN in the Currency Symbols block in June 2017. [2] Bitcoin is a worldwide cryptocurrency and digital payment system [8] :3 called the first decentralized digital currency , as the system works without a central repository or single administrator. [8] :1 [9] It was invented by an unknown person or group of people under the name Satoshi Nakamoto [10] and released as open-source software in 2009. [11] The system is peer-to-peer , and transactions take place between users directly, without an intermediary. [8] :4 These transactions are verified by network nodes and recorded in a public distributed ledger called a blockchain . Bitcoins are created as a reward for a process known as mining . They can be exchanged for other currencies, [12] products, and services. As of February 2015, over 100,000 merchants and vendors accepted bitcoin as payment. [13] Bitcoin can also be held as an investment. According to research produced by Cambridge University in 2017, there are 2.9 to 5.8 million unique users using a cryptocurrency wallet, most of them using bitcoin. [14] The word bitcoin first occurred and was defined in the white paper [15] that was published on 31 October 2008. [16] It is a compound of the words bit and coin . [17] The white paper frequently uses the shorter coin. [15] There is no uniform convention for bitcoin capitalization. Some sources use Bitcoin, capitalized, to Continue reading >>

Step By Step Procedure To Secure Your Bch (main/ Split) And Retrieve Balances

Step By Step Procedure To Secure Your Bch (main/ Split) And Retrieve Balances

By selectingMAINyou'll see and manage your BCH throughthe old HD path of Bitcoin (0'). This is the most simple way to manage your coins, as your BCH are already there. But it could also be more simple, so more tempting, for possible future malicious attacks. By selectingSPLITyou'll see and manage your BCH through the new HD path of Bitcoin Cash (145'). It will require you to make a transaction from the MAIN account to the SPLIT account (you'll have to spend some fees). But it could also be safer as you'll have new keys for this particular account. It is up to you: you can then choose to transfer from one path to another at your convenience -nothing is mandatory.This choice is done as an additional protection layer against scammers that could lure you into transacting on the wrong chain. Before doing anything, you should read this FAQ topic to understand how the fork works. If you own a Nano or a HW.1, you'll first have to update the firmware (see this non-official tutorial ) and can skip steps 1 and 2. If you have a Nano S you may have to update, see this topic. Install the Bitcoin Cash wallet from the Ledger Manager on your Ledger device (if the Ledger Manager says that no more space is available please delete other wallets,you won't lose any funds) Open the Bitcoin Cash wallet on your Ledgerdevice (only required on Nao S and Blue) Click on "Settings" and "Blockchains" to choose which Bitcoin chain you want to use. Click on the "Receive" tab (down pointing arrow) Copy the BCH address displayed, under the QR code Click on "Settings" => "Blockchains" => "Bitcoin Cash" Continue reading >>

Alasan Saya Berhenti

Alasan Saya Berhenti "main" Bitcoin

28 Desember 2017 14:54 Diperbarui: 28 Desember 2017 18:27 sumber ilustrasi: Kalau dibandingkan dengan pemain lain dalam jagat bitcoin, barangkali saya hanyalah seorang "newbie". Sebab, saya baru "menjajal" permainan bitcoin beberapa bulan lalu. Padahal, mata uang itu sudah diciptakan, dikenalkan, dan digunakan hampir sepuluh tahun yang lalu. Namun demikian, saya merasa tetap "bangga" menyandang status newbie itu. Apalagi, saat mengetahui bahwa mata uang itu memiliki beberapa "cacat", sepertinya status itu telah "menyelamatkan" investasi saya dari potensi bubble ekonomi yang mungkin saja melanda bitcoin pada masa depan. Seperti sudah disebutkan pada tulisan sebelumnya, " Tertarik Main Bitcoin? Pelajari Dulu Aturannya ", saya mengenal bitcoin tanpa disengaja. Semua itu berawal sewaktu saudara saya menceritakan investasi via bitcoin yang dilakukannya bersama teman-temannya. Setelah ia mencoba "mencekokkan" konsep bitcoin di kepala saya yang masih awam tentang mata uang virtual, ia terus membujuk saya bermain bitcoin. Oleh karena sering diiming-imingi return yang lumayan, akhirnya saya memutuskan ikut main. Semua itu dilakukan dengan beberapa pertimbangan. Pertama, sudah ada orang yang melakukannya. Makanya, saya bisa minta petunjuk manakala saya bingung memahami aturan mainnya. Kedua, sejumlah media "menggembar-gemborkan" keunggulan yang dimiliki bitcoin. Hal itulah yang kemudian "menjerumuskan" saya sehingga saya ikut mendaftar sebagai member di sebuah situs lokal, yang khusus mengatur transaksi bitcoin dengan mata uang rupiah. Lewat situs itulah, selama beberapa bulan, saya belajar mengenal semua aturan main bitcoin yang sederhana. Pasalnya, transaksi bitcoin mirip dengan perdagangan saham. Makanya, berlaku pula aturan transaksi: "beli saat nilainya turun, jual ketika h Continue reading >>

What To Know About The Major Cryptocurrencies Besides Bitcoin

What To Know About The Major Cryptocurrencies Besides Bitcoin

What to Know About the Major Cryptocurrencies Besides Bitcoin 2017 was the year that cryptocurrency finally went mainstream as Bitcoin s value soared from under $1,000 to nearly $20,000, and it doesnt look like things will slow down in 2018. If you feel like missed your chance to get in on the ground level with Bitcoin, there are plenty of other digital currencies to choose from. Heres a quick guide to some of the other cryptocurrencies that boomed in 2017 but still cost way less than Bitcoin. At its most simple, a cryptocurrency is a digital form of money that uses encryption to secure transactions, but there are a few other key details to understand. The first is that a cryptocurrency can be mined. This involves using a computer to solve increasingly difficult equations. These equations are required to verify transactions and in return the miner receives currency. The transaction records created this way are referred to as blocks, which brings us to the second key detail: blockchain. A blockchain is essentially a ledger of transactions built out of blocks. Its public and decentralized, so any changes are visible to everyone. Blockchain technology was originally created for Bitcoin, but it could potentially be used for anything from managing medical records to voting. With that out of the way, here are a few of the top cryptocurrencies you may have heard of and how they differ from Bitcoin. Bitcoin Cash was created through a fork to Bitcoin that occurred in August 2017 , establishing two distinct currencies. The goal was to make transactions quicker by increasing the size of blocks for Bitcoin Cash, which also makes it easier to scale up. Bitcoin Cash hasnt replaced Bitcoin, but it has racked up some value$2,788.68 per coin at the time of writing. Popular cryptocurren Continue reading >>

A Look At The Most Popular Bitcoin Exchanges

A Look At The Most Popular Bitcoin Exchanges

A Look At The Most Popular Bitcoin Exchanges Every informed person needs to know about Bitcoin because it might to be one of the worlds most important developments. ~ Leon Louw, Nobel Peace Prize Nominee Bitcoin exchanges are an integral part of the virtual currency world and its ecosystem in particular. Prior to the fall, Mt. Gox enjoyed the status of being a monopolist as it dominated an estimated 80-90% of the Bitcoin-Dollar trading volume. Though the collapse of Mt. Gox raised many questions, but the aftermath only lasted for a short span and the trading volumes rose again at various other exchanges. The exchanges today claim to have learned from Mt. Gox and present themselves as advanced models with better security mechanisms in place. The article covers some of the prominent platforms (in no particular order) for buying and selling Bitcoins. (Related: Bitcoin Mass Hysteria: The Disaster that Brought Down Mt. Gox ) Bitstamp , a Slovenia based Bitcoin exchange, is one of toppers in terms of trading volume. It facilitates instant buy-sell orders for USD/BTC pair with withdrawals and deposits available in currencies other than dollars as well. The exchange offers trading using limit orders where a pre-determined price can be set for buy and sell orders. Bitstamp has earned a strong reputation in the Bitcoin world. The two youngsters, Nejc Kodri and Damian Merlak, who are behind Bitstamp, are to be commended for running the exchange very professionally with sound audits and regulatory compliance. To buy Bitcoins, clients need to open an account with Bitstamp, which is followed by transferring money into the account. This can be done through SEPA , international wire transfer , etc. For those using SEPA, there is an additional step for change over from Euros to Dollars Continue reading >>

Lightning Network Deployed On Bitcoin Main Network

Lightning Network Deployed On Bitcoin Main Network

Lightning Network Deployed on Bitcoin Main Network In a major breakthrough in improving the Bitcoin user experience, developers have confirmed that Lightning Network transactions have been successfully deployed on Bitcoins main net. Every advancement in speeding up transaction confirmation time in the Bitcoin network is a good news as investors are getting frustrated by the long queue of unconfirmed transactions and high miner fees of about 1000 Satoshis per byte. Lightning is a decentralized network using smart contract functionality in the block chain to enable instant payments across a network of participants. It is one of the most eagerly awaited layer two upgrade for the Bitcoin Network. The successful deployment of Lightning Network will result in instantaneous transactions at a low cost. Further, the network will also be scalable and facilitate atomic swaps. The testnet platform can be used to create a wallet and get a feel of the technology using test Bitcoins (tBTC). Transactions get completed in a few seconds. Once the technology goes live, payments can be made quickly using Bitcoin. A beta release is soon expected. As of now, the miner fees can be reduced using Segwit addresses . However, several major wallet providers and payment processors do not support it. Commenting on the project, Lightnings co-founder Elizabeth Stark said she looked forward to way more of what no one has ever done. In a couple of months, we can expect Bitcoin network to have a fully functioning Lightning transaction facility. Continue reading >>

Bitcoin Drops Below Key $9,000 Level On Coinbase

Bitcoin Drops Below Key $9,000 Level On Coinbase

Bitcoin drops below key $9,000 level on Coinbase The decline followed reports that raised worries about increased regulation in India and potential price manipulation at a major exchange. Fundstrat's Tom Lee, the only major Wall Street strategist to issue formal price targets on bitcoin, said two weeks ago that $9,000 is a "major low" for bitcoin and "the biggest buying opportunity in 2018." The $9,000 to $10,000 price range has been a difficult one for bitcoin to break below since first topping $10,000 in late November. Bitcoin dropped Thursday to trade below $9,000, a critical level of support that many analysts are watching. The decline followed reports that raised worries about increased regulation in India and potential price manipulation at a major exchange. The digital currency fell nearly 13 percent to a low around $8,810 in late morning trading, ET, on Coinbase, the leading U.S. marketplace for trading major cryptocurrencies. For about 40 minutes, Coinbase also reported issues with a provider of SMS 2-factor authentication that was impacting "user sign-in, signups, and confirmations for sensitive actions," according to the company's status website. Bitcoin recovered slightly in afternoon trading to just above $9,100. CoinDesk's bitcoin price index, which tracks prices from four major cryptocurrency exchanges including Coinbase, also briefly fell below $9,000 and was trading near $9,152 as of 3:55 p.m., ET. CME's and Cboe's bitcoin futures contracts for February both fell below $9,000 as well and hovered around $8,900 in afternoon trading. The drop came after comments from India's minister of finance, Arun Jaitley, that raised concerns about increased regulation on cryptocurrencies in the country. The New York Times also reported Wednesday that an increasing nu Continue reading >>

Bitcoin May Come To Ebay As Platform Drops Paypal As Main Payment Option

Bitcoin May Come To Ebay As Platform Drops Paypal As Main Payment Option

For as long as people can remember, there has been a tight relationship between eBay and PayPal. In virtually every case, PayPal is a requiredoption for anyone looking to sell items on the global auction site. That situation will come to change in the near future, as eBay has announcedits plan to ditch PayPal asits main payment option. It is a rather surprising turn of events, albeit one thatcould be quite positive for both companies. It is evident that limiting a global auction site to one main payment method and two or three optional solutions is a bit problematic. Especially in this era of digital payments and competing financial services, there is no reason for eBay to tie its fate to PayPal whatsoever. Even though theplatform has made a big impact outside of the online auction industry as well, its still something whichcouldhold eBay back in terms of its global appeal. The number of current payment options on eBay is somewhat limited. Sellers are almost forced to enable PayPal , even if they would preferto get paidvia a wire transfer or money order. This has always been a problem, asusers felt they never hada real say inthe matter. After many years of giving PayPal the benefit of the doubt, it seems both companies will finally go their separate ways. This news may even be a result of eBay spinning off PayPal as an independent brand a while ago. With this change looming on the horizon, there is a lot of speculation to contend with. Everyone wants to know if eBay will introduce another mandatory payment option. If so, there is no indication as to which solution that might be, as the company has not announced any candidates. We do know the company is looking to integrate a new payment system built by Adyen, a Dutch company which can provide access to many different p Continue reading >>

What Is Bitcoin? - Coindesk

What Is Bitcoin? - Coindesk

Bitcoin is a form of digital currency, created and held electronically. No one controls it. Bitcoins aren’t printed, like dollars or euros – they’re produced by people, and increasingly businesses, running computers all around the world, using software that solves mathematical problems. It’s the first example of a growing category of money known as cryptocurrency. What makes it different from normal currencies? Bitcoin can be used to buy things electronically. In that sense, it’s like conventional dollars, euros, or yen, which are also traded digitally. However, bitcoin’s most important characteristic, and the thing that makes it different to conventional money, is that it is decentralized. No single institution controls the bitcoin network. This puts some people at ease, because it means that a large bank can’t control their money. A software developer called Satoshi Nakamoto proposed bitcoin, which was an electronic payment system based on mathematical proof. The idea was to produce a currency independent of any central authority, transferable electronically, more or less instantly, with very low transaction fees. No one. This currency isn’t physically printed in the shadows by a central bank, unaccountable to the population, and making its own rules. Those banks can simply produce more money to cover the national debt, thus devaluing their currency. Instead, bitcoin is created digitally, by a community of people that anyone can join. Bitcoins are ‘ mined’ , using computing power in a distributed network. This network also processes transactions made with the virtual currency, effectively making bitcoin its own payment network. So you can’t churn out unlimited bitcoins? That’s right. The bitcoin protocol – the rules that make bitcoin work Continue reading >>

The Three Main Cryptocurrencies All Drop | City & Business | Finance | Express.co.uk

The Three Main Cryptocurrencies All Drop | City & Business | Finance | Express.co.uk

Bitcoin price news: 'Only invest if you can lose money', warns expert Bitcoin surpassed tulip mania to become the biggest ever bubble the world has ever seen. Bitcoin and others have usually bounced back from such high falls, however, the cryptocurrency environment is slightly different now. Competitor cryptocurrencies have now flooded the market. These new altcoins have all helped to take attention away from the big three. Other well known cryptocurrencies such as Bitcoin Cash is down 31 percent, Litecoin is down 29 percent, Dash is down 24 percent, and Monero is down 30 percent. It comes as South Korea considers a ban on trading in cryptocurrency completely and implementing new regulation on the cryptocurrency market. China is toying with the idea of cutting off domestic access to cryptocurrency platforms and exchanges that enable people to trade digital currencies. Lukman Otunuga, research analyst at FXTM in the UK said: With reports on a renewed crackdown on the cryptocurrency in China fueling anxiety over future restrictions, further losses could be on the cards (for bitcoin) in the near term. The sharp depreciation witnessed in bitcoin today should remind investors on how explosively volatile and unpredictable the cryptocurrency can be. Continue reading >>

Bitcoin - The Internet Of Money

Bitcoin - The Internet Of Money

Read the Original Bitcoin Whitepaper [ Blockchain Proof ] Obtaining bitcoins works just like obtaining any other currency. You can sell something you already have for them. You can ask your existing employer to pay you in Bitcoin.The easiest way is to just buy them on one of our trusted Bitcoin exchanges. Using and spending bitcoins is easy. The first step is finding the businesses that accept Bitcoins easy, instant and secure payment system. More and more businesses, large and small, accept Bitcoin payments every day. Continue reading >>

Bitcoin Has Little Shot At Ever Being A Major Global Currency

Bitcoin Has Little Shot At Ever Being A Major Global Currency

Bitcoin has little shot at ever being a major global currency Oracle of Omaha, Warren Buffett, said on CNBC Wednesday morning that the speculation in bitcoin, and other cryptocurrencies, "will have a bad ending." Cryptocurrencies have fallen 10 percent to 20 percent in value in recent days. Anytime bitcoin is mentioned, it is expressed in U.S. dollar terms. A customer uses a Bitcoin machine in Piccadilly Circus in London. With cryptocurrencies still in the news, tumbling 10 percent to 20 percent in recent days thanks in part to a change in calculating how the coins are valued, the debate rages on as to whether bitcoin , ethereum, ripple, bitcoin cash and litecoin are, in fact, money. The Oracle of Omaha, Warren Buffett, said on CNBC W ednesday morning that the speculation in bitcoin, and other cryptocurrencies, "will have a bad ending." Appropriately, dogecoin, a digital currency that began as a joke based on an internet meme, has risen sharply in recent days and hit a total value of $2 billion. By Wednesday it had retreated to a market value of about $1.5 billion, according to CoinMarketCap. But rather than seeing all these digital currencies as a small part of a larger system known as blockchain, I am predisposed to view them as just speculative tokens in a cryptocurrency bubble that has inflated more quickly than any other in financial market history. Admittedly I'm green with envy for failing to foresee the explosive rally in the price of bitcoin when it was first brought to my attention several years ago. Having said that, there are many things I find quite ironic about how bitcoin and other "cryptos" are described. First, they are largely denominated, or discussed, in U.S. dollar terms. If, however, you are buying and selling these currencies on the various excha Continue reading >>

Where The World's Biggest Banks And Investors Stand On Bitcoin - Business Insider

Where The World's Biggest Banks And Investors Stand On Bitcoin - Business Insider

A vertical stack of three evenly spaced horizontal lines. * Copyright 2018 Business Insider Inc. All rights reserved. Registration on or use of this site constitutes acceptance of our A bloodbath gripped the crypto markets this week, with virtually every single major cryptocurrency taking significant losses, but huge amounts of excitement remains about the space from all corners of society. Bitcoin, the first, biggest, and most recognisable cryptocurrency, has been at the heart of much of that excitement, with acolytes touting it as the future of global finance, and some even suggesting that it could replace fiat currencies like the dollar and the pound. Bitcoin's rise has been so rapid and so aggressive that the market's more established institutions and figures have been simply unable to ignore it. There is a big spread of opinion across the sector, with some seeing cryptocurrencies as a possible driver of a fundamental shift in the global financial system, others disliking bitcoin, but having some faith in the blockchain technology that underlines it, and others just seeing crypto as, basically, a complete waste of time. To find out where the industry's big players stand on the cryptocurrency world, Business Insider looked back through recently published analyst notes from major investment banks, research houses, and asset managers. You can see what staff from the likes of Goldman Sachs, Morgan Stanley, and JPMorgan think below: James Faucette, Morgan Stanley: Bitcoin is worth $0. What they say: Faucette's issue with the currency is that it is incredibly hard to value, and that it also very hard to determine what kind of an asset it is. As BI's Jim Edwards wrote back in December when the note was first released: "Morgan Stanley analyst James Faucette and his team se Continue reading >>

Why Bitcoin Is The Most Dangerous Global Scam In 20 Years

Why Bitcoin Is The Most Dangerous Global Scam In 20 Years

Why Bitcoin Is the Most Dangerous Global Scam in 20 Years When bitcoin inevitably crashes, inexperienced investors who believed the hype could lose everything. Vivek Wadhwa is vice president of academics and innovation at Singularity University; a fellow at the Arthur and Toni Rembe Rock Center for Corporate Governance at Stanford University; director of research at the Center for Entrepreneurship and Research Commercialization and exec in residence at the Pratt School of Engineering at Duke University; and distinguished visiting scholar at the Halle Institute of Global Learning at Emory University. Stanford, Duke, and Singularity University Continue reading >>

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