Friday, November 14, 2014

How much are bitcoins worth

How Much Are Bitcoins Worth Usd


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Bitcoin worth almost as much as gold


Bitcoin prices continued their record run. The new all-time high is close to what it costs to buy an ounce of gold.


NEW YORK (CNNMoney)


Bitcoins are now worth nearly as much as an ounce of gold.


The price of one bitcoin rose as high as $1,242 early Friday, just two days after crossing $1,000 for the first time. Prices subsequently fell back to about $1,155. Meanwhile, gold prices were trading around $1,250 an ounce, down about 25% for the year.


Bitcoin has surged this year on hopes the experiment in digital money will eventually become a legitimate global currency. One bitcoin was worth about $13 in January.


Bitcoin, which trades non-stop on the Mt. Gox exchange and other online markets, has been extremely volatile. It rose to what was then an all-time high of $900 earlier this month. only to fall back to $500 in the span of 28 hours.


Demand for bitcoin has been particularly strong in China. where the leading search engine, Baidu ( BIDU ). now accepts the currency for certain services.


In the United States, lawmakers have been examining potential regulations for bitcoin, which is the currency of choice on certain online markets for drugs and other illicit goods.


Federal authorities shut down the online drug bazaar Silk Road last month, though a new version of the market has resurfaced a few weeks later .


Bitcoin has received a measure of support from officials at the Federal Reserve, including chairman Ben Bernanke, who said the currency "may hold long-term promise" as part of the international payment system.


Some proponents say government regulation would be a positive for bitcoin, since it could lead to wider adoption of the currency. But others argue that bitcoin is decentralized by design and the government should leave well enough alone.


Investors say bitcoin is highly speculative, and should not exceed 1% of a portfolio. Many have compared bitcoin to a lottery ticket, saying it could be worth a lot, or nothing at all.


Bitcoin prices surged in April following an unprecedented bailout of the banking system in Cyprus, a move that led to concerns about the stability of European banks and the euro currency. But prices plunged in May in what many saw as the bursting of a bubble. Bitcoin traded in a range around $100 for most of the summer before the current rally kicked off in October.


Meanwhile, a growing number of businesses now accept bitcoins, ranging from some Subway sandwich shops to Richard Branson's commercial space travel venture, Virgin Galactic .


How I make money mining bitcoins


How Much Are Bitcoins Really Worth?


At over $400 a bitcoin, the defiant crytopcurrency is bubbling all over again, causing enough buzz that the Senate is having a hearing on virtual currencies. What boils down to some mathematical models and open source code is now worth $4.4 billion.


It might be because of fiscal instability around the world. It might be because of growing interest in China. It might be because you heard some guy is a millionaire now because he, on a whim, bought $50 worth two years ago. The hype machine is in full force. My mom is talking about bitcoin again.


7 DAY$-24/HR$ - BITCOIN MINING EXPERIMENT - See How Much Money I Made :)








But how much is bitcoin really worth? Believers say the sky’s the limit. It could hit $10,000, or $100,000. The doubters, like Business Insider ’s Joe Weisenthal. believe it’s only matter of time before gravity takes over, the bubble pops, and we return to $0. Without a killer app—the Silk Road 2.0 doesn’t count—bitcoin is a purely speculative asset, making its inherent value nearly impossible to calculate. Normally, free markets can do an adequate job of pricing when the fundamentals are unclear, but since there’s still no easy way to short bitcoins, or bet that the price will go down, without actually owning bitcoins themselves, the market price can be misleading.


Part of the problem is, beyond having a difficult time understanding how it works, we aren’t quite sure what bitcoin is, or is trying to be. Though described as such, bitcoin hardly resembles a currency. Its price is too wild, its usage too hipster. Any useful currency needs to be stable and convenient.


Instead, the best argument I’ve heard from the movement’s advocates is that bitcoin, rather than acting as a currency, is better suited as a payment processor, at least in the medium term, which actually holds water. There’s no punk politics here about evil central bankers. It’s fairly easy to start accepting payment in bitcoins. E-commerce platform Shopify recently announced official integration. The math also computes because the fees are cheaper compared to credit cards, PayPal, or Western Union.


Using those companies as a benchmark, a private fund called the Bitcoin Investment Trust is presenting a snapshot of how much bitcoin should be worth if it became a widely used method of making payments or sending money to other people.


Granted, it’s a somewhat weird, if not intuitive, way to value bitcoins. Comparing the market value of a company to the total value of all bitcoins in circulation doesn’t make total sense. But it does give some idea, however imperfect, of what bitcoin might be worth if it ever takes off in a meaningful way, and where it might need to find stability for it to be useful. The point is, even at around $400 a coin, it still has a long way to go.

Friday, November 7, 2014

Generating bitcoins

Bitcoin Generation


It looks like you don't have Java installed. Please install java at Java.com


You must have Java installed to use the bitcoin generator.


If your browser asks you to run the applet, or to install Java, say yes.


Waiting for Java applet to load.


Step 1: Click "Start Generating"


Step 2: Wait while your computer works (leave this page open)


Step 3: Earn bitcoin


It's that easy. Want the explanation? Read how bitcoin works. but click "Start Generating" first so you'll earn bitcoin while you read.


You are not logged in. You can start generating now and your coins will be transfered to your account when you sign up. If you close your browser your coins may be lost.


Already have an account? Log in .


FAQ


Can I use multiple computers to generate bitcoin


Absolutely . You can use as many computers as you like, all signed in to the same account, in order to generate bitcoin faster.


What does the speed mean?


The speed is how many times per second you are trying to generate a payout. A payout happens around every 4 billion tries.


The "Estimated time per payout" is the average time it will take you to generate a payout based on your average speed.


Will this slow down my computer?


No . The bitcoin generator only uses your spare computing time. It runs at a low priority, so if you start using other applications, it will get out of the way so that your other applications won't slow down . Try it - you should find that your computer is just as fast (or slow) as it normally is.


Do I need to keep this page open to generate bitcoin?


Yes . Your computer will only be generating bitcoin as long as you keep this page open .


I generated a payout in 5 minutes but it says it takes 2.5 hours. How did that happen?


Payouts are essentially random . It's like a lottery that happens millions of times per second, where you get an entry for every calculation you perform. In your case, you got lucky and a got a payout quickly.


Why does the payout change? Do you take a cut?


The bitcoin network adjusts the difficulty of the puzzle approximately every 2 weeks . This means it takes more computing power to get the same payout. However, instead of taking longer and longer to generate a payout on this page, I keep the difficulty the same, but adjust the payout. Yes, I do take a small fee of 3% . to keep the site going (and make a little bit of money).


I'm close to generating a payout, will I lose my progress if I turn off my computer?


No . The progress bar is an estimated progress. In reality, it's impossible to determine how long it will take to generate a payout since they are random. Try to have your computer generating all the time . but remember you won't lose your progress when you turn off your computer or stop generating.


Beginners Guide to Mining Bitcoins


One of the biggest problems I ran into when I was looking to start mining Bitcoin for investment and profit was most of the sites were written for the advanced user. I am not a professional coder, I have no experience with Ubuntu, Linux and minimal experience with Mac. So, this is for the individual or group that wants to get started the easy way.


First thing you need to do is get a “Bitcoin Wallet”. Because Bitcoin is an internet based currency, you need a place to keep your Bitcoins. Got to http://www.bitcoin.org and download the Bitcoin client for your Operating System. Install it the client will begin to download the blockchain. Downloading the blockchain can take a long time and will be over 6GB of data. If you have data caps, I would recommend ordering a copy of the blockchain on DVD to keep from going over as it is growing exponentially. Click to order the bitcoin blockchain by mail. Once the client is up to date, click “New” to get your wallet address. It will be a long sequence of letters and numbers. One of most important things you can do is make sure you have a copy of the wallet.dat file on a thumb drive and print a copy out and keep it in a safe location. You can view a tutorial on how to create a secure wallet by clicking the link on the top of the page. The reason is that if you computer crashes and you do not have a copy of your wallet.dat file, you will lose all of your Bitcoins. They won’t go to someone else, they will disappear forever. It is like burning cash.


Now that you have a wallet and the client, you are probably roaring to go, but if you actually want to make Bitcoin (money), you probably need to join a pool. A pool is a group that combines their computing power to make more Bitcoins. The reason you shouldn’t go it alone is that Bitcoins are awarded in blocks, usually 50 at a time, and unless you get extremely lucky, you will not be getting any of those coins. In a pool, you are given smaller and easier algorithms to solve and all of your combined work will make you more likely to solve the bigger algorithm and earn Bitcoins that are spread out throughout the pool based on your contribution. Basically, you will make a more consistent amount of Bitcoins and will be more likely to receive a good return on your investment.


The pool that I’m involved in is called Slush’s Pool so I will be giving instructions on how to join there but feel free to look at other options. Follow the link to go to their site and click the “Sign up here” link at the top of their site and follow their step by step instructions. After you have your account set up, you will need to add a “Worker”. Basically, for every miner that you have running, you will need to have a worker ID so the pool can keep track of your contributions.


If you are mining with an ASIC, please go to our Mining with ASICs page. The following will only pertain to GPU miners.


Most of the mining programs out there are pretty complicated to setup and will frustrate your average user. Recently a great program has come out to get the most basic of users started. The program is called GUIMiner. Click the link and download the program (Be careful, some of the ads are set up to look like the file download). Install and run the program and add in your information from Slush’s Pool. Remember that the user name is actually the worker name. The worker name will be your user name, dot, worker ID (username.worker ID) and the password from that worker ID.


Mac users should look into using Astroid


Now that you are set up, you can start mining. If you feel like you want to make more Bitcoins, you might want to invest in mining hardware.


To see how much your current hardware will earn mining Bitcoins, head over to the Bitcoin Profitability Calculator .


If you found this information helpful, please donate to 1G1ehppEgjiFTUSHFz2xs9KLSQuWLPYF2o


Step 1 - Get a wallet


There are many wallets to choose from and here are our recommendations:


Web Wallets - Web wallets are the easiest & most convenient to use, but are potentially less secure than wallet software run on your own computer.


Software Wallets - Software wallets are downloaded and run from your computer. They're considered more secure because the user has more control and doesn't depend on a 3rd party service. Most software wallets require nearly a full day constructing a local copy of the blockchain before use.


BitcoinQT - The original Satoshi wallet from bitcoin.org


Armory - (Recommended) Armory is the most mature full featured wallet.


Multibit - This is the easiest to use because it doesn't require a full download of the blockchain.


Mobile Phone Wallets - iphone & Android apps are available.


Hardware Wallets - Hardware wallets are the most secure because they don't expose your private keys to the network.


Trezor - (not yet available, coming soon)


BitSafe - (not yet available, coming soon)


Step 2 - Get Bitcoins


Purchasing Bitcoins - Although it's not yet easy to buy bitcoins, it's getting simpler every day. Here are our recommendations:


LocalBitcoins.com - This fantastic service allows you to search for people in your community willing to sell bitcoins to you directly.


How To Buy Bitcoins - An international directory of bitcoin exchanges.


Cash Into Coins - Recommended for fast, simple service.


Coinbase - Bitcoin exchange based in the United States. (Highly rated).


BitStamp - A multi currency bitcoin exchange based in Slovenia. (Highly rated).


MtGox - A multi currency bitcoin exchange based in Japan


CIC News 10-01-2014: Yahoo malware for generating bitcoins | Speakers pull RSA talk








CoinJar - CoinJar allows direct bitcoin purchases on their site. They're based in Australia but serve an international clientele.


Earn Bitcoins - Many people find that the best way to get bitcoins is to accept them as payment for the products or services they already sell. Just give your customers the option to pay in bitcoin.


To make it easy, you may want to sign up for a bitcoin merchant account which allows you to send invoices and integrate bitcoin payments into your online order pages for most of the popular shopping cart systems.


BitPay - (Highly Recommended) - Merchant account services


CoinBase - Merchant account services


Coinkite - Merchant Terminal / POS system


generating bitcoins


Mining Bitcoins - Mining bitcoins requires an investment in specialized bitcoin mining hardware designed to process double round sha256 hash verifications at high speed. Many excellent systems are available.


It's important to point out that bitcoin mining is highly competitive and risky for would be participants . Please see our bitcoin mining page for more detail.


The manufacturers who have successfuly shipped bitcoin mining hardware in volume are:


Step 3 - What can I do with my bitcoins?


Bitcoins can be used to purchase just about anything you want. Dental services, a brand new car. travel and even luxury real estate.


We recommend searching the merchant directories below to locate the merchants you're interested in. You can buy gift cards with bitcoin and spend them in most of the stores you already use.


Merchant directories


coinmap - Find bitcoin friendly merchants near you


bitpay merchant directory - Over 12,000 businesses and charities.


Gift Cards - Available from Gyft.com and spendable at:


Bitcoin Store - Electronics & everything else for Bitcoin


Bitcoin Foundation - The Bitcoin Foundation standardizes, protects and promotes the use of Bitcoin cryptographic money for the benefit of users worldwide.


BitGive - BitGive is a non-profit foundation that is accepting donations from the Bitcoin community and providing charitable gifts to environmental and public health causes worldwide.


Bitcoin Development Fund - A charity devoted to helping further the development of bitcoin, the open source community and causes of humanity.


Step 4 - Keeping up to date with bitcoin


r/bitcoin - Bitcoin links and discussion by the Reddit community


Coindesk - An excellent source of bitcoin news


Bitcoin Magazine - Insightful articles with deep technical credentials


BitcoinX - Bitcoin headlines, market rates & charting resources


The Video - An excellent primer for anyone curious to understand the bitcoin phenomenon


How To Mine Bitcoins


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Mining bitcoins – a process that helps manage bitcoin transactions as well as create new “wealth” – is the new Beanie Babies. Luckily for us, however, bitcoins seem to be going up in value and should maintain their value over time, unlike your mint condition Tiny the stuffed Chihuahua.


But how do you get bitcoins? You can begin by buying them outright, but the market is currently wild. At $188 per coin, the direction of the bitcoin is anyone’s guess right now and, unlike equities, these things don’t split. In short, you should probably mine. But what is bitcoin mining?


Think of it as work done by groups of people to find large prime numbers or trying keys to decrypt a file. You can read a lot more about it here but just understand that for every block mined you get 25 coins or, at current rates, $4,722.25. Currently a single bitcoin is valued at $188, an alarming result that is probably caused by money movements related to Cyprus and a general bubble-like excitement over the platform in general. In fact, many wager that the DDOS attacks on many bitcoin-related services are direct action by hackers to inject instability in order to reduce the price.


As it stands, mining solo is very nearly deprecated. The process of finding blocks is now so popular and the difficulty of finding a block so high that it could take over three years to generate any coins. While you could simply set a machine aside and have it run the algorithms endlessly, the energy cost and equipment deprecation will eventually cost more than the actual bitcoins are worth.


Pooled mining, however, is far more lucrative. Using a service like “Slush’s pool” (more on that later) you can split the work among a ground of people. Using this equation:


(25 BTC + block fees – 2% fee) * (shares found by user’s workers) / (total shares in current round)


While this is simplified, it is basically how the system works. You work for shares in a block and when complete you get a percentage of the block based on the number of workers alongside you, less fees. Using this method, I have been able to raise about $1.50 over the weekend by running a dormant PC. The astute among you will note that I probably used twice that amount of electricity.


Being a neophile, I’m surprised it took me so long to start mining. My buddy Tom explained how to set up a pooled mining account so I thought it would be interesting to share the instructions.


1. Get a wallet. You can either store your wallet locally or store it online. Coinbase.com is an online wallet that is surprisingly simple to set up. Wallets require you to use or download a fairly large blockchain file – about 6GB – so downloading and updating a local wallet may be a non-starter. Like all wealth storage mediums, keeping your bitcoins “local” is probably a better idea than trusting a web service, but that’s a matter of private preference. There is no preferred wallet type and there are obvious trade-offs to both. Privacy advocates would probably say a local wallet is best.


You can download a local wallet here but make sure you keep a copy of your data backed up.


Once you’ve created a wallet, you get an address like this: 1BEkUGADFbrEShQb9Xr4pKPtM8jAyiNQsJ. This, without the period, is a direct way to send bitcoins to your wallet. Make a note of your address. In Coinbase, the wallet address found under linked accounts.


2. Join a pool. To mine in a pool you have to work with a group of other miners on available blocks. The most popular is Slush’s Pool found here. You can also try guilds like BTC Guild as well as a number of other options. Each of the pools is characterized mostly by the fees they charge per block – 2% for Slush’s pool, for example – and the number of users. Pools with fewer users could also have a slower discovery time but pools with many users usually result in smaller payments.


How can you be sure the pool owner doesn’t steal all your bitcoins? You can’t. However, as one pool owner, Slush, notes:


In theory, as the Bitcoin pool operator, I could keep the 25 BTC from a block found by the pool for myself. I’m not going to do this, but I completely accept that people do not trust the pool operator. It is their freedom of choice, and Bitcoin is about freedom.


For simplicity’s sake, I’m using Slush’s Pool and have created three workers. First, create a pool login. Then add workers. The workers are sub-accounts with their own passwords and are usually identified by [yourlogin].[workername]. I have three workers running, currently – one on my iMac and two on my old PC.


You must create workers to mine. The instructions are very straightforward for most services so don’t become overwhelmed. Like any online club, you can dig deeply into the subculture surround bitcoin as you gain experience. I like to think of it as a financial MMORPG.


Also be sure to enter your wallet address into the pool information. This will ensure you get your bitcoins.


3. Get a miner. There are a number of mining options for multiple platforms although OSX users may find themselves in a bit of a pickle. Miners use spare GPU cycles to power the mining operation, much like services like SETI@Home uses spare cycles for finding intelligent life. Miners, on the other hand, use these cycles to help handle peer-to-peer processes associated with bitcoins. Thus by doing “work” you are maintaining the network as well.


GUIMiner is the simplest solution for Windows users as it allows you to create miners using almost all standard graphics cards. You can download it here. 50Miner is also a popular solution. Both require you to enter your worker info and pool and they’ll start mining.


Linux users can run miners like CGMiner. An excellent guide to installing a miner on Ubuntu is available here .


OS X users can use DiabloMiner. a two-year old command-line program that will mine using OpenCL. Sadly, it uses deprecated calls to Bitcoin and is quite a bit slower. As a result, you need to run your own proxy, Stratum. that allows Diablo to connect with services like Slush’s pool. Both of these programs usually run without issue on OS X although you may need to install OpenCL for OSX .


To mine I’ve created a script that I run in Terminal that simply runs the proxy in the background and then connects Diablo. Note the last two arguments are necessary for Mountain Lion.


/stratum-mining-proxy-master/mining_proxy.py &


/DiabloMiner-OSX.sh -u WORKERNAME -p WORKERPASSWORD -o localhost -r 8332 -w 64 -na


RPCMiner is far easier to run – you simply click an icon and enter some data – and both have very rudimentary, text-based interfaces. Running Diablo on my iMac has not had much effect on application performance under OS X although it does slow down my Windows 8 machine considerably.


4. Keep your mind on your money. Bitcoins are baffling in that they are wildly simple to use and mine. Speculators, then, would probably be able to throw hundreds of machines at the problem and gather bitcoins like raindrops, right? Wrong. As more bitcoins are found, they become more difficult to find. This profitability calculator will help you understand what you’re up against but understand that this isn’t a sure thing. I’ve run my systems for a weekend and seen a mere $1.50 – enough for a coke – but other users may have improved hardware and methods to succeed. In short, if it costs more to run your hardware than you gain in bitcoins, you’re probably doing something wrong.


Good luck in your journey and enjoy your first foray into this wild and wooly world.


Generating Bitcoins


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Thursday, October 30, 2014

Fpga bitcoin

Just released was the Open Source FPGA Bitcoin Miner  software.  This miner allows bitcoins to be mined using a commercially available FPGA board.


FPGA boards consume much less electricity compared to GPUs for the hashing work performed when mining bitcoins.


FGPAs might have a MHash/J performance level around 20 or more whereas the most efficient GPUs are closer to about 2 MHash/J.


There are fears that FPGA mining will force miners using GPUs today to either pivot and switch to FPGA mining for their operations or to abandon mining completely when the efficiency disparity makes GPU mining uncompetitive.


Those fears are likely unwarranted just yet though.  The cost of the equipment and not the cost of electricity continues to be the primary concern affecting miner’s decision on whether or not to add capacity.


Using commercially available FPGA boards to attain a certain level of hashing can require investment several times that required for a GPU-based equivalent.


Though a less costly FPGA board designed specifically for bitcoin could be built, there are no sources for such a product yet — at least not commercially.


fpga bitcoin


GPU Mining Still Profitable And Still Growing


It will likely be many months yet before the FPGA would even start to displace the GPU as the technology responsible for significant increases to the mining difficulty measure.


GPU miners have been able to reach the breakeven point, on a per-dollar invested basis, within a couple months after bringing new capacity online.  Thereafter a decent profit continues to be returned though the profitability level can decline steadily with each subsequent increase in difficulty when there is no matching increase in the bitcoin exchange rate as well.


The Bitcoin network has continued to see capacity come online at an unprecedented and torrid pace — over 30 GHash/s of capacity was added each day during the most recent difficulty adjustment period, for example.


Because of the recent run-up in the bitcoin exchange rate mining is generally considered to be very profitable at the present time.  It will remain highly profitable until either the exchange rate drops or the difficulty level increases significantly as the result of additional mining capacity being procured and brought online by miners seeking those profits.


With so many miners active now, the global supply of GPU hardware has become constrained.  Even used GPUs found on eBay, for example, are becoming difficult to find.  If the now-discontinued ATI HD 5870s and HD 5970s were still sold, or AMD were able to keep up with demand for the AMD HD 6990s, the difficulty increases would likely be even greater than what is being seen now.


FPGA’s Edge


Even though the FGPA solution is extremely expensive relative to its GPU equivalent, FPGAs are widely available commercially.  If the bitcoin exchange rate were to spike further, FPGA mining may be about the only option for being able to add any significant amount of mining capacity.


The higher power efficiency that an FPGA provides is not just a factor for comparing the cost of electricity to mine but also when other factors are considered.


fpga bitcoin


The total amount of electricity consumed by a miner with a GPU mining rig or two will add up quickly.  Individual miners are already popping breakers after exceeding limits on the amount of current available from household circuits used when mining with multiple GPUs in a single rig even.  Those with multiple rigs are finding limits to the amount of electricity fed to the property as well.


When power consumption limits are a constraint, then the FPGA with its significantly higher power efficiency might be the only method to increase mining hashing capacity.


Residential electric rates are often tiered to encourage conservation.  As a result the incremental rate for mining starts at the most expensive tier for the household.  Individuals mining from their homes should be the biggest beneficiaries from having an efficient FPGA alternative but the equipment’s high cost will remain a major limiting factor, as will the technical skill level necessary for FPGA mining.


Further out, if the exchange value of bitcoin rises much further the numbers begin to approach the level where building and producing an ASIC design might become feasible.


If or when that happens, then the clock counting the days left for GPU mining can start ticking.


Hack A Day - FPGA bitcoin mining


The board requires only 6.8 watts for 100 Mhashes/second, but [li_gangyi]‘s blog says the team expects to hit 150-200 Mhashes with some improvements.


Only four of these boards were built and the supply has already sold out.  Deposits are being accepted at Cablesaurus towards pre-orders for the second generation model.  The second generation units are priced at $420 (single FGPA) to $620 (dual FPGA) but those prices will likely be lowered before purchase due to volume discounts.  The number of boards produced will be determined by how many deposits (paid in either bitcoins or USDs) are made.


This board differs from the modular FPGA hardware project  but runs the same open source FGPA miner  that was released in May.


FPGA hardware is more expensive for mining Bitcoin than the hashing equivalent when GPU graphics cards are used but power consumption for FPGA mining can be nearly an order of magnitude less.  At current exchange rates and difficulty levels. the dual-FGPA board will produce just under 0.12 BTC per day, which is worth about $1.22 USD.  Calculated using the typical U.S. residential rate the cost of electricity to run the two FPGAs for a day is under $0.04 USD, or about 3% of revenue.  For comparison, when GPU graphics cards are used for mining in regions where electric rates are high the cost of electricity can exceed half the miner’s revenue.


Though mining profitabilty  is near all-time lows, these levels are still high enough that FGPAs are not yet price competitive due to the higher hardware costs involved.  At the same time, this board just brought FPGA mining one step closer to becoming a significant competitor to GPU mining.  Those likely to be the early adopters will be those hitting total power consumption limits, those running out of space and those unable to sufficiently remove the heat produced when mining with GPUs.


Product Comparison


Last Updated: 2012-01-25. For the latest product information, please check the forum.


Bitcoin in a Nutshell


Bitcoin is a peer-to-peer currency based on public key signatures and an ingenious double-spend-prevention mechanism based on a cryptographic hash function (SHA256). Nodes in the Bitcoin network are rewarded for finding x, such that SHA256(SHA256(x)) is below a certain target (this is called mining). The first node to find a solution earns Bitcoins.


The Bitcoin network adjusts this target so that on average, a solution is found every 10 minutes, based on the total computational rate (MH/s) of the network.


A node's chance of winning is roughly equal to the fraction of total MH/s that it contributes to the network.


Mining requires the latest technology and/or low electricity costs to remain profitable over time. Only the most power-efficient survive.


In mid-2011, GPU mining was highly profitable, with many ATI GPUs paying for themselves in 6-9 months, counting power (but not cooling, maintenance, configuration, or other) costs. However, as an increasing number of GPU miners chased those returns, the difficulty adjusted and large-scale GPU mining inevitably became unprofitable.


Field Programmable Gate Array miners are under active development and use around 1/10th the power of a GPU, at the same performance level (MH/s). The upfront capital investment is higher than for GPUs; however, once made, the lower operational costs should enable FPGA miners to earn a significant monthly profit, even at price and difficulty levels where GPUs cannot. FPGAs are more power-efficient for mining, and over time are likely to make GPU mining unprofitable. Once the electricity to run a GPU costs more than the bitcoins it can produce, most miners will turn them off, and either sell their GPUs, or repurpose them.


A GPU process shrink does not change this situation; a 45nm FPGA still uses less electricity per MH than a 28nm GPU. And of course - 28nm FPGAs will arrive around the same time as 28nm GPUs, keeping FPGAs firmly ahead throughout 2012.


Now is the best time to switch to FPGA-based mining, to enjoy a major technological advantage over most other miners.


The FPGA End-Game


Large-scale miners who are willing to make the initial investment in FPGA mining should be able to mine a substantial portion of the remaining coins, with no operational threat from GPUs for at least the next 2 years. It looks likely that miners using GPUs will need to migrate to FPGAs to remain profitable during 2012.


Why not build an ASIC?


It's extremely expensive to build an ASIC that can outperform high-volume 40nm/28nm FPGAs. A 40nm mask set costs around $4M. Older technologies are less expensive, but above 130nm, probably cannot outperform a 28nm FPGA. At the current price and liquidity of Bitcoin, an ASIC would be an extremely risky investment. Most likely, the mining community will switch to FPGAs first and move to ASICs if/only if the Bitcoin ecosystem matures and expands considerably.


To Learn More..


Join #bitcoin-fpga on freenode. There's a small community of talented folks working on a variety of designs.


FPGA LOGi Family Bitcoin Mining Application


FPGA LOGi Bitcoin Mining Application


Foreword: This project allows users to easily experiment with and discover the inner workings of mining on a low cost multi-purpose platform. Note that there are currently much faster and more powerful options available for bitcoin mining including FPGA arrays and ASICS. The purpose of the article and project is simply to introduce to the processes and algorithms used for bitcoin mining, not to make money. The knowlege, algorithms and processes can be taken to larger scale platforms if the user wishes to seriously pursue bitcoin mining


logi-mark1-bone-beaglebone-pi-arduino


Bitcoin


Using FPGA hardware for bitcoin mining at home








So what is bitcoin? Bitcoin is an experimental, decentralized digital currency that enables instant payments to anyone, anywhere in the world. Bitcoin uses peer-to-peer technology to operate with no central authority: managing transactions and issuing money are carried out collectively by the network. Bitcoin is designed around the idea of using cryptography to control the creation and transfer of money, rather than relying on central authorities [1]. The more interesting aspects of bitcoin mining are in the details of the intricate protocols and algorithms being used that make up what is quickly being adopted as a new digital currency. Part of the beauty of the bitcoin protocol is that it uses technologies including encryption, hashing, client to client communication, all of which scream out for an FPGA implementation.


Mining


Most of the work involved in bitcoin transactions is in the mining. The key part of the transaction is in the verification process that authenticates the bitcoin transaction. The verification process awards effective bitcoin nodes (or "bitcoin miners") with a limited release of bitcoins and the transaction fees (if any). This process requires intense computing power, electricity, and significant investment as it solves hashes through brute-force to verify transactions and add them to the network's transaction log [1]. So part of the fun of mining is getting a reward equivalent to hard cash money! You might have noticed the words brute force and solving hashes. These are two more keywords that are just asking for an FPGA.


Algorithm


The process of bitcoin mining is no minor feat and this is why FPGA’s have been widely adopted for the task. T he mining process, or proof-of-work process, involves scanning for a value that when hashed, such as with SHA-256, the hash begins with a number of zero bits. Once this hash has been found, the block can be considered as being solved and the transaction can be verified. The average work required is exponential in the number o f zero bits required and can be verified by executing a single hash [2]. You can go through the links below to see more details about the processing, but the bottom line is that you are looking for a diamond in the rough. So, get to that number crunching, as the faster you crunch the numbers the sooner you will have a chance to wield that bitcoin cash earned by the work of that handy dandy FPGA.


The reality of solving a “block” or successfully mining the correct hash is becoming harder and harder with the advent of bigger and better processing work horses. The trend has gone from crunching the numbers on high end FPGA’s to now being able buy a custom ASIC which is designed to increase the total number of hashes/sec calculated while reducing the power requirement from that of running PC’s, GPU’s or FPGA’s. But this should not discourage you from getting started with an FPGA, as there are now pools of miner’s which all work together to solve the “block” and then share the loot with all who were working on it. So, even the humble 2.5 Mega hash/sec, as found in this project, can get you in the game. You will have bragging rights of be saying you did it, but it probably won’t ever get you rich.


The bigger motivational factor should be to do it because you can. There is only one place to start in learning to work with FPGA’s and create cool and interesting projects. My vote is to start off with the basics, learn to work with a basic FPGA, learn the algorithms involved that have the potential of making you some digital cash, and most importantly have fun while you’re doing it!


LOGi Family Bitcoin mining Application


The FPGA LOGi family has support for a bitcoin mining application that will get you up and running with a fully operational bitcoin miner in 10 cubic inches of hardware. The current hardware supported is the LOGi-bone in conjunction with the Beaglebone. You can simply extract and run the packaged application code or open and explore the open source project yourself, learn it, make modifications and then build and run your own custom version. After getting the application running, don’t forget to sit back and think, I just created my own bitcoin mining rig!


This mining project is based upon an existing open source hardware project that was customized and built to work on the LOGi family and Beaglebone. The project was created by Jonathan Piat. The LOGi team looks forward to porting the project to run on the LOGi-Mark1 and allow interfacing the Beaglebone, Raspberry Pi. When you are finished with the bitcoin minig project, don't throw out the board move onto the many other cool projects that the LOGi Family boards are capable of running, such as plug and play machine vision. Quadcopter, autonomous robot and many more. The LOGI team plans to continue working to make these projects as plug and play as possible, as was done with the mining application.


Running the Demo:


This demo shows how one can build a low power self contained mining platform using a Beaglebone and the Logibone cape. In this demo the Beaglebone executes a python client that Communicates with the mining pool to get share information and submit hashing results. A python class provides the interface to the Logibone to easily get/send information from/to the FPGA. The Logibone cape uses the GPMC interface of the Beaglebone and thus appear in the Beaglebone address space as a set of registers. These register provides information about the hashing status and an interface to write the share and read the result.


To run the demo:


1) Extract the logibone_mining_demo.tar.gz file to the beaglebone


2) Extract the tar.gz file (tar xzf logibone_mining_demo.tar.gz)


3) Go into the logibone_mining_demo folder


4) Add execution mode to the make_demo.sh script (chmod 777 make_demo.sh)


5) If you are running Ubuntu, edit make_demo to uncomment the “apt-get” lines and


comment the “opkg” lines (by default the demo runs on Angstrom)


minutes and the cape Led should be blinking)


Note: You will need to configure each mining worker to participate in a bitcoin mining pool You be given worker registration information username and password for each worker that can be used to configure your mining worker. There are many mining pool sites which can be referenced here: http://mining.bitcoin.cz/


References and Resources:

Monday, October 27, 2014

Fpga bitcoin mining

Just released was the Open Source FPGA Bitcoin Miner  software.  This miner allows bitcoins to be mined using a commercially available FPGA board.


FPGA boards consume much less electricity compared to GPUs for the hashing work performed when mining bitcoins.


FGPAs might have a MHash/J performance level around 20 or more whereas the most efficient GPUs are closer to about 2 MHash/J.


There are fears that FPGA mining will force miners using GPUs today to either pivot and switch to FPGA mining for their operations or to abandon mining completely when the efficiency disparity makes GPU mining uncompetitive.


Those fears are likely unwarranted just yet though.  The cost of the equipment and not the cost of electricity continues to be the primary concern affecting miner’s decision on whether or not to add capacity.


Using commercially available FPGA boards to attain a certain level of hashing can require investment several times that required for a GPU-based equivalent.


Though a less costly FPGA board designed specifically for bitcoin could be built, there are no sources for such a product yet — at least not commercially.


GPU Mining Still Profitable And Still Growing


It will likely be many months yet before the FPGA would even start to displace the GPU as the technology responsible for significant increases to the mining difficulty measure.


GPU miners have been able to reach the breakeven point, on a per-dollar invested basis, within a couple months after bringing new capacity online.  Thereafter a decent profit continues to be returned though the profitability level can decline steadily with each subsequent increase in difficulty when there is no matching increase in the bitcoin exchange rate as well.


The Bitcoin network has continued to see capacity come online at an unprecedented and torrid pace — over 30 GHash/s of capacity was added each day during the most recent difficulty adjustment period, for example.


Because of the recent run-up in the bitcoin exchange rate mining is generally considered to be very profitable at the present time.  It will remain highly profitable until either the exchange rate drops or the difficulty level increases significantly as the result of additional mining capacity being procured and brought online by miners seeking those profits.


With so many miners active now, the global supply of GPU hardware has become constrained.  Even used GPUs found on eBay, for example, are becoming difficult to find.  If the now-discontinued ATI HD 5870s and HD 5970s were still sold, or AMD were able to keep up with demand for the AMD HD 6990s, the difficulty increases would likely be even greater than what is being seen now.


FPGA’s Edge


Even though the FGPA solution is extremely expensive relative to its GPU equivalent, FPGAs are widely available commercially.  If the bitcoin exchange rate were to spike further, FPGA mining may be about the only option for being able to add any significant amount of mining capacity.


The higher power efficiency that an FPGA provides is not just a factor for comparing the cost of electricity to mine but also when other factors are considered.


The total amount of electricity consumed by a miner with a GPU mining rig or two will add up quickly.  Individual miners are already popping breakers after exceeding limits on the amount of current available from household circuits used when mining with multiple GPUs in a single rig even.  Those with multiple rigs are finding limits to the amount of electricity fed to the property as well.


When power consumption limits are a constraint, then the FPGA with its significantly higher power efficiency might be the only method to increase mining hashing capacity.


Residential electric rates are often tiered to encourage conservation.  As a result the incremental rate for mining starts at the most expensive tier for the household.  Individuals mining from their homes should be the biggest beneficiaries from having an efficient FPGA alternative but the equipment’s high cost will remain a major limiting factor, as will the technical skill level necessary for FPGA mining.


Further out, if the exchange value of bitcoin rises much further the numbers begin to approach the level where building and producing an ASIC design might become feasible.


If or when that happens, then the clock counting the days left for GPU mining can start ticking.


Product Comparison


Last Updated: 2012-01-25. For the latest product information, please check the forum.


Bitcoin in a Nutshell


Bitcoin is a peer-to-peer currency based on public key signatures and an ingenious double-spend-prevention mechanism based on a cryptographic hash function (SHA256). Nodes in the Bitcoin network are rewarded for finding x, such that SHA256(SHA256(x)) is below a certain target (this is called mining). The first node to find a solution earns Bitcoins.


The Bitcoin network adjusts this target so that on average, a solution is found every 10 minutes, based on the total computational rate (MH/s) of the network.


A node's chance of winning is roughly equal to the fraction of total MH/s that it contributes to the network.


Mining requires the latest technology and/or low electricity costs to remain profitable over time. Only the most power-efficient survive.


In mid-2011, GPU mining was highly profitable, with many ATI GPUs paying for themselves in 6-9 months, counting power (but not cooling, maintenance, configuration, or other) costs. However, as an increasing number of GPU miners chased those returns, the difficulty adjusted and large-scale GPU mining inevitably became unprofitable.


Field Programmable Gate Array miners are under active development and use around 1/10th the power of a GPU, at the same performance level (MH/s). The upfront capital investment is higher than for GPUs; however, once made, the lower operational costs should enable FPGA miners to earn a significant monthly profit, even at price and difficulty levels where GPUs cannot. FPGAs are more power-efficient for mining, and over time are likely to make GPU mining unprofitable. Once the electricity to run a GPU costs more than the bitcoins it can produce, most miners will turn them off, and either sell their GPUs, or repurpose them.


A GPU process shrink does not change this situation; a 45nm FPGA still uses less electricity per MH than a 28nm GPU. And of course - 28nm FPGAs will arrive around the same time as 28nm GPUs, keeping FPGAs firmly ahead throughout 2012.


Now is the best time to switch to FPGA-based mining, to enjoy a major technological advantage over most other miners.


The FPGA End-Game


Large-scale miners who are willing to make the initial investment in FPGA mining should be able to mine a substantial portion of the remaining coins, with no operational threat from GPUs for at least the next 2 years. It looks likely that miners using GPUs will need to migrate to FPGAs to remain profitable during 2012.


Why not build an ASIC?


It's extremely expensive to build an ASIC that can outperform high-volume 40nm/28nm FPGAs. A 40nm mask set costs around $4M. Older technologies are less expensive, but above 130nm, probably cannot outperform a 28nm FPGA. At the current price and liquidity of Bitcoin, an ASIC would be an extremely risky investment. Most likely, the mining community will switch to FPGAs first and move to ASICs if/only if the Bitcoin ecosystem matures and expands considerably.


To Learn More..


Join #bitcoin-fpga on freenode. There's a small community of talented folks working on a variety of designs.


Hack A Day - FPGA bitcoin mining


The board requires only 6.8 watts for 100 Mhashes/second, but [li_gangyi]‘s blog says the team expects to hit 150-200 Mhashes with some improvements.


Only four of these boards were built and the supply has already sold out.  Deposits are being accepted at Cablesaurus towards pre-orders for the second generation model.  The second generation units are priced at $420 (single FGPA) to $620 (dual FPGA) but those prices will likely be lowered before purchase due to volume discounts.  The number of boards produced will be determined by how many deposits (paid in either bitcoins or USDs) are made.


This board differs from the modular FPGA hardware project  but runs the same open source FGPA miner  that was released in May.


FPGA hardware is more expensive for mining Bitcoin than the hashing equivalent when GPU graphics cards are used but power consumption for FPGA mining can be nearly an order of magnitude less.  At current exchange rates and difficulty levels. the dual-FGPA board will produce just under 0.12 BTC per day, which is worth about $1.22 USD.  Calculated using the typical U.S. residential rate the cost of electricity to run the two FPGAs for a day is under $0.04 USD, or about 3% of revenue.  For comparison, when GPU graphics cards are used for mining in regions where electric rates are high the cost of electricity can exceed half the miner’s revenue.


fpga bitcoin mining


Though mining profitabilty  is near all-time lows, these levels are still high enough that FGPAs are not yet price competitive due to the higher hardware costs involved.  At the same time, this board just brought FPGA mining one step closer to becoming a significant competitor to GPU mining.  Those likely to be the early adopters will be those hitting total power consumption limits, those running out of space and those unable to sufficiently remove the heat produced when mining with GPUs.


FPGA LOGi Family Bitcoin Mining Application


FPGA LOGi Bitcoin Mining Application


Foreword: This project allows users to easily experiment with and discover the inner workings of mining on a low cost multi-purpose platform. Note that there are currently much faster and more powerful options available for bitcoin mining including FPGA arrays and ASICS. The purpose of the article and project is simply to introduce to the processes and algorithms used for bitcoin mining, not to make money. The knowlege, algorithms and processes can be taken to larger scale platforms if the user wishes to seriously pursue bitcoin mining


logi-mark1-bone-beaglebone-pi-arduino


Bitcoin


So what is bitcoin? Bitcoin is an experimental, decentralized digital currency that enables instant payments to anyone, anywhere in the world. Bitcoin uses peer-to-peer technology to operate with no central authority: managing transactions and issuing money are carried out collectively by the network. Bitcoin is designed around the idea of using cryptography to control the creation and transfer of money, rather than relying on central authorities [1]. The more interesting aspects of bitcoin mining are in the details of the intricate protocols and algorithms being used that make up what is quickly being adopted as a new digital currency. Part of the beauty of the bitcoin protocol is that it uses technologies including encryption, hashing, client to client communication, all of which scream out for an FPGA implementation.


Mining


Most of the work involved in bitcoin transactions is in the mining. The key part of the transaction is in the verification process that authenticates the bitcoin transaction. The verification process awards effective bitcoin nodes (or "bitcoin miners") with a limited release of bitcoins and the transaction fees (if any). This process requires intense computing power, electricity, and significant investment as it solves hashes through brute-force to verify transactions and add them to the network's transaction log [1]. So part of the fun of mining is getting a reward equivalent to hard cash money! You might have noticed the words brute force and solving hashes. These are two more keywords that are just asking for an FPGA.


Algorithm


The process of bitcoin mining is no minor feat and this is why FPGA’s have been widely adopted for the task. T he mining process, or proof-of-work process, involves scanning for a value that when hashed, such as with SHA-256, the hash begins with a number of zero bits. Once this hash has been found, the block can be considered as being solved and the transaction can be verified. The average work required is exponential in the number o f zero bits required and can be verified by executing a single hash [2]. You can go through the links below to see more details about the processing, but the bottom line is that you are looking for a diamond in the rough. So, get to that number crunching, as the faster you crunch the numbers the sooner you will have a chance to wield that bitcoin cash earned by the work of that handy dandy FPGA.


The reality of solving a “block” or successfully mining the correct hash is becoming harder and harder with the advent of bigger and better processing work horses. The trend has gone from crunching the numbers on high end FPGA’s to now being able buy a custom ASIC which is designed to increase the total number of hashes/sec calculated while reducing the power requirement from that of running PC’s, GPU’s or FPGA’s. But this should not discourage you from getting started with an FPGA, as there are now pools of miner’s which all work together to solve the “block” and then share the loot with all who were working on it. So, even the humble 2.5 Mega hash/sec, as found in this project, can get you in the game. You will have bragging rights of be saying you did it, but it probably won’t ever get you rich.


The bigger motivational factor should be to do it because you can. There is only one place to start in learning to work with FPGA’s and create cool and interesting projects. My vote is to start off with the basics, learn to work with a basic FPGA, learn the algorithms involved that have the potential of making you some digital cash, and most importantly have fun while you’re doing it!


LOGi Family Bitcoin mining Application


The FPGA LOGi family has support for a bitcoin mining application that will get you up and running with a fully operational bitcoin miner in 10 cubic inches of hardware. The current hardware supported is the LOGi-bone in conjunction with the Beaglebone. You can simply extract and run the packaged application code or open and explore the open source project yourself, learn it, make modifications and then build and run your own custom version. After getting the application running, don’t forget to sit back and think, I just created my own bitcoin mining rig!


This mining project is based upon an existing open source hardware project that was customized and built to work on the LOGi family and Beaglebone. The project was created by Jonathan Piat. The LOGi team looks forward to porting the project to run on the LOGi-Mark1 and allow interfacing the Beaglebone, Raspberry Pi. When you are finished with the bitcoin minig project, don't throw out the board move onto the many other cool projects that the LOGi Family boards are capable of running, such as plug and play machine vision. Quadcopter, autonomous robot and many more. The LOGI team plans to continue working to make these projects as plug and play as possible, as was done with the mining application.


Running the Demo:


This demo shows how one can build a low power self contained mining platform using a Beaglebone and the Logibone cape. In this demo the Beaglebone executes a python client that Communicates with the mining pool to get share information and submit hashing results. A python class provides the interface to the Logibone to easily get/send information from/to the FPGA. The Logibone cape uses the GPMC interface of the Beaglebone and thus appear in the Beaglebone address space as a set of registers. These register provides information about the hashing status and an interface to write the share and read the result.


To run the demo:


1) Extract the logibone_mining_demo.tar.gz file to the beaglebone


2) Extract the tar.gz file (tar xzf logibone_mining_demo.tar.gz)


3) Go into the logibone_mining_demo folder


4) Add execution mode to the make_demo.sh script (chmod 777 make_demo.sh)


5) If you are running Ubuntu, edit make_demo to uncomment the “apt-get” lines and


comment the “opkg” lines (by default the demo runs on Angstrom)


minutes and the cape Led should be blinking)


Note: You will need to configure each mining worker to participate in a bitcoin mining pool You be given worker registration information username and password for each worker that can be used to configure your mining worker. There are many mining pool sites which can be referenced here: http://mining.bitcoin.cz/


References and Resources:

Tuesday, October 21, 2014

Fpga bitcoin miner

Product Comparison


Last Updated: 2012-01-25. For the latest product information, please check the forum.


Bitcoin in a Nutshell


Bitcoin is a peer-to-peer currency based on public key signatures and an ingenious double-spend-prevention mechanism based on a cryptographic hash function (SHA256). Nodes in the Bitcoin network are rewarded for finding x, such that SHA256(SHA256(x)) is below a certain target (this is called mining). The first node to find a solution earns Bitcoins.


The Bitcoin network adjusts this target so that on average, a solution is found every 10 minutes, based on the total computational rate (MH/s) of the network.


A node's chance of winning is roughly equal to the fraction of total MH/s that it contributes to the network.


Mining requires the latest technology and/or low electricity costs to remain profitable over time. Only the most power-efficient survive.


In mid-2011, GPU mining was highly profitable, with many ATI GPUs paying for themselves in 6-9 months, counting power (but not cooling, maintenance, configuration, or other) costs. However, as an increasing number of GPU miners chased those returns, the difficulty adjusted and large-scale GPU mining inevitably became unprofitable.


Field Programmable Gate Array miners are under active development and use around 1/10th the power of a GPU, at the same performance level (MH/s). The upfront capital investment is higher than for GPUs; however, once made, the lower operational costs should enable FPGA miners to earn a significant monthly profit, even at price and difficulty levels where GPUs cannot. FPGAs are more power-efficient for mining, and over time are likely to make GPU mining unprofitable. Once the electricity to run a GPU costs more than the bitcoins it can produce, most miners will turn them off, and either sell their GPUs, or repurpose them.


A GPU process shrink does not change this situation; a 45nm FPGA still uses less electricity per MH than a 28nm GPU. And of course - 28nm FPGAs will arrive around the same time as 28nm GPUs, keeping FPGAs firmly ahead throughout 2012.


Now is the best time to switch to FPGA-based mining, to enjoy a major technological advantage over most other miners.


The FPGA End-Game


Large-scale miners who are willing to make the initial investment in FPGA mining should be able to mine a substantial portion of the remaining coins, with no operational threat from GPUs for at least the next 2 years. It looks likely that miners using GPUs will need to migrate to FPGAs to remain profitable during 2012.


Why not build an ASIC?


It's extremely expensive to build an ASIC that can outperform high-volume 40nm/28nm FPGAs. A 40nm mask set costs around $4M. Older technologies are less expensive, but above 130nm, probably cannot outperform a 28nm FPGA. At the current price and liquidity of Bitcoin, an ASIC would be an extremely risky investment. Most likely, the mining community will switch to FPGAs first and move to ASICs if/only if the Bitcoin ecosystem matures and expands considerably.


To Learn More..


Join #bitcoin-fpga on freenode. There's a small community of talented folks working on a variety of designs.


Hack A Day - FPGA bitcoin mining


The board requires only 6.8 watts for 100 Mhashes/second, but [li_gangyi]‘s blog says the team expects to hit 150-200 Mhashes with some improvements.


Only four of these boards were built and the supply has already sold out.  Deposits are being accepted at Cablesaurus towards pre-orders for the second generation model.  The second generation units are priced at $420 (single FGPA) to $620 (dual FPGA) but those prices will likely be lowered before purchase due to volume discounts.  The number of boards produced will be determined by how many deposits (paid in either bitcoins or USDs) are made.


This board differs from the modular FPGA hardware project  but runs the same open source FGPA miner  that was released in May.


FPGA hardware is more expensive for mining Bitcoin than the hashing equivalent when GPU graphics cards are used but power consumption for FPGA mining can be nearly an order of magnitude less.  At current exchange rates and difficulty levels. the dual-FGPA board will produce just under 0.12 BTC per day, which is worth about $1.22 USD.  Calculated using the typical U.S. residential rate the cost of electricity to run the two FPGAs for a day is under $0.04 USD, or about 3% of revenue.  For comparison, when GPU graphics cards are used for mining in regions where electric rates are high the cost of electricity can exceed half the miner’s revenue.


Though mining profitabilty  is near all-time lows, these levels are still high enough that FGPAs are not yet price competitive due to the higher hardware costs involved.  At the same time, this board just brought FPGA mining one step closer to becoming a significant competitor to GPU mining.  Those likely to be the early adopters will be those hitting total power consumption limits, those running out of space and those unable to sufficiently remove the heat produced when mining with GPUs.


Just released was the Open Source FPGA Bitcoin Miner  software.  This miner allows bitcoins to be mined using a commercially available FPGA board.


FPGA boards consume much less electricity compared to GPUs for the hashing work performed when mining bitcoins.


FGPAs might have a MHash/J performance level around 20 or more whereas the most efficient GPUs are closer to about 2 MHash/J.


There are fears that FPGA mining will force miners using GPUs today to either pivot and switch to FPGA mining for their operations or to abandon mining completely when the efficiency disparity makes GPU mining uncompetitive.


Those fears are likely unwarranted just yet though.  The cost of the equipment and not the cost of electricity continues to be the primary concern affecting miner’s decision on whether or not to add capacity.


fpga bitcoin miner

Using commercially available FPGA boards to attain a certain level of hashing can require investment several times that required for a GPU-based equivalent.


Though a less costly FPGA board designed specifically for bitcoin could be built, there are no sources for such a product yet — at least not commercially.


GPU Mining Still Profitable And Still Growing


It will likely be many months yet before the FPGA would even start to displace the GPU as the technology responsible for significant increases to the mining difficulty measure.


GPU miners have been able to reach the breakeven point, on a per-dollar invested basis, within a couple months after bringing new capacity online.  Thereafter a decent profit continues to be returned though the profitability level can decline steadily with each subsequent increase in difficulty when there is no matching increase in the bitcoin exchange rate as well.


The Bitcoin network has continued to see capacity come online at an unprecedented and torrid pace — over 30 GHash/s of capacity was added each day during the most recent difficulty adjustment period, for example.


Because of the recent run-up in the bitcoin exchange rate mining is generally considered to be very profitable at the present time.  It will remain highly profitable until either the exchange rate drops or the difficulty level increases significantly as the result of additional mining capacity being procured and brought online by miners seeking those profits.


With so many miners active now, the global supply of GPU hardware has become constrained.  Even used GPUs found on eBay, for example, are becoming difficult to find.  If the now-discontinued ATI HD 5870s and HD 5970s were still sold, or AMD were able to keep up with demand for the AMD HD 6990s, the difficulty increases would likely be even greater than what is being seen now.


FPGA’s Edge


Even though the FGPA solution is extremely expensive relative to its GPU equivalent, FPGAs are widely available commercially.  If the bitcoin exchange rate were to spike further, FPGA mining may be about the only option for being able to add any significant amount of mining capacity.


The higher power efficiency that an FPGA provides is not just a factor for comparing the cost of electricity to mine but also when other factors are considered.


fpga bitcoin miner

The total amount of electricity consumed by a miner with a GPU mining rig or two will add up quickly.  Individual miners are already popping breakers after exceeding limits on the amount of current available from household circuits used when mining with multiple GPUs in a single rig even.  Those with multiple rigs are finding limits to the amount of electricity fed to the property as well.


When power consumption limits are a constraint, then the FPGA with its significantly higher power efficiency might be the only method to increase mining hashing capacity.


Residential electric rates are often tiered to encourage conservation.  As a result the incremental rate for mining starts at the most expensive tier for the household.  Individuals mining from their homes should be the biggest beneficiaries from having an efficient FPGA alternative but the equipment’s high cost will remain a major limiting factor, as will the technical skill level necessary for FPGA mining.


Further out, if the exchange value of bitcoin rises much further the numbers begin to approach the level where building and producing an ASIC design might become feasible.


If or when that happens, then the clock counting the days left for GPU mining can start ticking.

Tuesday, October 14, 2014

Fastest way to get bitcoins

Fastest Way To Get Bitcoins


Fastest Way To Get Bitcoins


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Fastest Way to Get Bitcoins


The fastest and easiest way to buy Bitcoins is by looking for sellers who accept cash deposit at  Local Bitcoins .  Go to this site, create an account, log in, and go to the  Buy Bitcoins online in the United States with Cash Deposit  section (or to your relevant country's site), and find a seller who is asking for a cash deposit to a nearby bank.


Once you find a seller who has a price you like with a good trust rating at a nearby bank, and click on [Buy]. Then enter the dollar amount and click [Send Trade Request].  At this point, the bitcoins you are buying are deducted from the Seller's account on Local Bitcoins and placed into Escrow  for 4 hours.


You will see information or receive an e-mail with the sellers' name and account number at that bank. Once you have this, go to the bank with your cash.  Get a deposit slip if needed and fill it out with the account number (some banks just have the teller take your account number verbally) and bring it to the teller.  Tell the teller you want to deposit cash into the seller's account.  Hold onto the receipt for the cash deposit from the teller as proof that you made the deposit in the unlikely case of any dispute.


Go back to your computer / phone and mark the transaction on Local Bitcoins as [Deposit Completed].  This will automatically notify the seller that you've completed your deposit.  They will log onto their on-line banking website, and confirm that you made the deposit.  Because the trader may be accepting multiple trades at the same round dollar amount, it is a best practice to add a few cents to the deposit so that it is a unique dollar amount and less likely to be confused with other depositor's deposit.


Get Bitcoin: 20+ ways to Earn Free Bitcoin


Bitcoin is a new and quickly spreading digital currency system. What it means is you can send and receive money, pay for your snacks or pizza, buy an Android for your loved one, etc. using bitcoins. Recently, bitcoin exchange rate has gone as high as never before – about $15 per bitcoin. Just imagine to get bitcoin free coins and you’ll be having enough money to buy you a computer game or a software! Interesting, isn’t it?


Image source: sylvar at Flickr


Whoa! Bitcoin is not only of some worth but also anonymous (till some limits, if you follow guidelines to maintain anonymity), i.e. no one can know about you at time of sending or receiving payments. It’s possible as you don’t need to provide any of your details like name, address, country, etc. to use Bitcoin system. Bitcoin is a decentralized currency system which is not governed by any central authority tracking you and your money. Then how Bitcoin is managed? Bitcoin is maintained by peer-to-peer network of contributors who run Bitcoin software on their computers and become part of the system, and help the system to grow and run.


You can get bitcoin free coins by doing small works like doing surveys, reading posts, signing up forms, clicking on ads, etc. There are also people who give out free bitcoin to people who are thinking to start using Bitcoin system. Why they give free Bitcoin? For a simple reason – they like Bitcoin system and they want it to grow and become popular, and so they want you to use Bitcoin. By giving out some amount of free bitcoin, they encourage you to use Bitcoin system and once you come to know about the benefits of it, you’ll use it by yourself – no need of encouragement then.


Recommended Reading:


Note: I’ve removed some of the sites that were not good to be included in this list.


Here are some of the services where you can get bitcoin for free or by doing little work:


This site give out free bitcoins to users for visiting its site. You get free bitcoins only once per day and you can visit this site again tomorrow to get some more free bitcoins. I suppose this site runs on ads and they want you to visit their site to increase their ads revenues and in return, you too get some free coins (mutually beneficial for both). They also have a referral program, which you can use to maximize your free earnings. PS- don’t forget to click on ads on their site, may be you can get bigger amount of free bitcoins this way.


This site pays you bitcoins for shortening your URLs with its service. What happens is after you shorten your URL on this site and post that shortened address, then people visiting that link is shown ads and you’re paid for it.


This site pays you free bitcoins for visiting their site.


This site provides free bitcoins to you for completing offers and surveys.


This site also offers free bitcoins for viewing other websites but this site do it in a different way – you’ve to see a website and then answer a question related to the shown website to redeem your free bitcoin. It don’t make you see website for any particular time – you just need to answer the question, no matter you take 5 seconds or 5 minutes in doing the same.


This site offer you small amount of bitcoins for visiting their site.


This site gives you 0.0001 BTC for just visiting their site. It also offers jackpots which can be upto 0.01 BTC.


This site give out free bitcoins to you for browsing other sites for a minimum of 5 minutes. It’s not a poor thing – you get paid for working – in this case, browsing their advertisers’ sites. You don’t need to create an account for this, just enter your bitcoin address and start browsing sites, and you get paid as you finish browsing the sites. Simple and direct!


This site also offers you free bitcoins for just visiting their site. It give out coins every 1 minute.


This site give you free bitcoins for re-tweeting sponsored ads present on their site. It claims to pay you bitcoins at most in an hour, no matter where in the world you are. Along with the sponsored ad, payment amount is shown so that you can select which ads to re-tweet if you want to get maximum earnings.


This site give you free bitcoins for completing ads and it announced to give away free bitcoins without showing ads as the site grows.


This site provide you free coins for completing offers on their site. Offers can be completing surveys or buying something from one of their advertisers.


This site gives you 0.0001 BTC for every public bookmark you make on this site. This site is a public social bookmarking site and you get some rewards for sharing good links on this site.


This site is a online gaming site. It is a real gaming site where you play Urban Terror online and whenever you kill a player, you get his/her bitcoins. On the contrary, if you die, you lose some of your bitcoins. Amount of bitcoins that you get or lose depends on the game that you’re playing. These amounts are shown on the homepage of Bitcoin Terror.


This site gives you free bitcoins for visiting and browsing sponsored websites for some set amount of time.


This site pays you bitcoins for doing small works like surveys, search items and submitting reports, etc. You make points from doing work and once you’ve reached 200 points, your points get converted to bitcoins and are paid to your bitcoin address. If you ask me, I won’t recommend this site as it will take a lot of time and effort in earning 200 points.


This site is a question and answer forum. This site rewards you small amount of bitcoins for answering to questions asked by other members.


This site pays you bitcoins for completing advertisers’ surveys.


This site pays you bitcoins for watching their sponsored videos.


This site give away 0.0005 BTC for just visiting their site. You can redeem free bitcoins only once a day.


This site pay you free bitcoins for completing the offers on their site. Offers may include signing up for various free services or something similar. But of course, you need to provide correct information about you when completing their offers, else that offer won’t get verified and you won’t get paid.


This site give out free bitcoins for viewing other websites.


Bitcoin Faucet give out 0.005 bitcoins to each visitor. You must have a Gmail account to claim your free bitcoins on this site and you need to solve a CAPTCHA problem to prove it that you have living cells, i.e. you’re a human and not a piece of code (automatic bot) trying to steal free money from the site.


Bitcoin is new and many people show concerns about its usage or future. I won’t say it’s going to rock but I agree it’s going to live. I’ve been closely researching about Bitcoins for some time and you’ll be amazed to know that 1 BTC worth of $1 some months ago is now equal to (approx.) $15. I have observed that Bitcoin is being quickly adopted by people and demand for bitcoins is rising day by day, and that’s the reason behind its growing exchange rate. Well, I hope you’ll like these above given sites and get some free money to buy you a chocolate!


Do you know any other site to get free bitcoins?


What is your experience with above given sites?


I’d love to listen from you via comments.


How do I get Bitcoins? (For Beginners)


It might be a question for beginners, but the answer to how you can get Bitcoins isn’t obvious. Where you live, how technical you are, and what you want to do with your Bitcoins are all determining factors. We have plenty of people coming into the Bitcoin community each day, so WELCOME!


(For those wanting to learn more about how Bitcoin works, a podcast called Security Now did a great show a couple years ago that covers the basics. The explanation starts at the 42 minute mark and gets technical after about 10 minutes.)


There are 4 main ways to get Bitcoin.


Firstly, there are Exchanges, where you can buy and sell Bitcoin for fiat currency (which is Muggle currency like USD and Euros). There are many new options for buying Bitcoin, which will vary depending on where in the world you are. These are changing pretty rapidly, but the main players have remained pretty constant so far.


Easy way to earn Bitcoins by playing games, No Mining or Surveys








Second, Bitcoin “mining” remains a primary vehicle of attaining the currency. Bitcoin “mining ” has proceeded to increase in difficulty. Currently, the value of BTC is more than keeping pace with this increase in difficulty, but the costs of entry in terms of hardware are high.


Thirdly, you can send and receive Bitcoin, for whatever reason, between individuals, using a Bitcoin Wallet. Again, there are many options for your wallet, which acts as you might expect from the name, as a place to keep and compartmentalise your Bitcoins. You will also need a Bitcoin wallet to spend your Bitcoin from once you have them. You can keep your Bitcoin wallet online (although it might not be as secure as on a piece of your own hardware), on your phone, or on your desktop.


Finally, you can make Bitcoin through content or services offered online. In order to do this, you will need a wallet, and you might choose to use a tool on your site that stores your wallet address as a QR code, to make payments from mobile phones easier.


EXCHANGES


Exchanges are places where you can buy and sell Bitcoin for fiat currency. Three of the main players in this space are Mt.Gox, BitStamp and CoinBase.


Regardless of where you live, Mt.Gox  remains a good purchasing-point for Bitcoin, although their service is currently suffering from some holdups, they are still the largest of the BTC exchanges. Their prices are about $10 higher than their largest competitor, however, due to the difficulty in getting USD in and out of the exchange. If you are a first time buyer, check out BitStamp.


fastest way to get bitcoins


MtGox is, at the time of this writing (updated August 2013), is allowing the following funding sources:aurumXchange , BitInstant. Euro Bank Transfer, Bank Transfer, Liberty Reserve, OkPay


If you plan on transferring money from your bank, expect (4-5 business) days of wait time. For withdrawals in fiat currency (if you want to sell your BTC for Dollars, Pounds or Euros) Mt.Gox is currently painfully slow – they are in the process of changing banking partners, and are only allowed a very limited number of wire transfers per day. Expect to wait 3 weeks for your money, if not longer.


MtGox is, at the time of this writing (updated 2013), is allowing the following funding sources: aurumXchange. BitInstant. Euro Bank Transfer, Bank Transfer, Liberty Reserve, OkPay


If you plan on transferring money from your bank, expect (4-5 business) days of wait time.


Second largest of the BTC Exchanges, and quickly gaining on Mt.Gox, is BitStamp, who take wire bank transfers and usually operates at a lower USD purchase and selling price then Mt.Gox, due to the difficulty of getting USD in and out of Mt.Gox. BitStamp is based in Slovenia, and (currently) is able to operate relatively freely due to the EU’s ruling that Bitcoin is not money. This will most likely change as Germany’s decision to classify Bitcoin as “Private Money” becomes a precedent for the rest of Europe, but as Germany has treated Bitcoin in such a reasonable way, it’s unlikely to cause BitStamp users much disruption.


US citizens should also take a look at CoinBase. which offers simplicity and credibility as a business.  (Recently, it has received a large investment from Silicon Valley venture capitalists.)  It is also faster than going through an intermediary to MtGox.  What you get in simplicity, however, you lose in terms of exchange rates which are currently at 1% at Coinbase.


Please be cautious and do plentiful independent research before choosing any exchange–as many have opened and closed over the last few years.


MINING


A note on “mining” (using computer hardware to generate) vs. buying Bitcoin:


Mining is always getting more computationally expensive per Bitcoin generated.  This is because fewer Bitcoins are generated over time and more people are trying to “win” them.


If you want to go ahead and mine them though, we’ll be setting up a


Opinion: Because fewer Bitcoins are being generated, this means fewer Bitcoins are being “dumped” into exchanges.  This means that, over time, downward pressure on the value of BTC has lessened.  I believe this scarcity is a contributing factor to the rising value of BTC.


WALLETS


Three of the most popular wallets recommended by Bitcoin.org are Multibit. for your desktop, and BitcoinWallet for the android, whilst those holding large amounts of Bitcoin might want to consider Armory for high security.


Be sure to set good passwords for any wallet that you choose.


ECOMMERCE


Receiving tips on your website is straightforward, once you have a Bitcoin wallet you just need to display your Wallet address.


For eCommerce, consider BitPay for your website shopping cart.


A NEW ECONOMY


Up until this point, the Bitcoin economy and its participants have been somewhat reliant on making money through mining.  It’s been some peoples’ hobby, others’ full-time job.


Another practical way to earn Bitcoins has become to provide goods or services to others. You know, like people do with a normal currencies.


So, where would you go to sell goods and services?  Get it listed on the Wiki Trade Page !


KEEPING UP WITH BITCOIN


If you are invested in Bitcoin, you should be hyper-aware of the news affecting the currency, especially considering how volatile it is.  I highly recommendwww.bitcoinnews.com.  For three years, it has offered pretty fair reporting on all things Bitcoin.  I also encourage you to sign up for the Bitcoin Bulletin newsletter, on the right hand panel.


Like this post? Tip us with bitcoin!


Get Bitcoins – The Fastest Way


The fastest way I know of to currently get bitcoins with cash (aside from having a friend ship you some btc) is to use “BitInstant “. Basically you will need a wallet first (hosted or hard drive it doesn’t matter - see the basics ), or just use your poker account. and set up your wallet later when you want to cash out. Then set up a deposit on BitInstant. Walk, drive, hitchhike to the Walmart/CVS and deposit the cash. The bitcoins will show up in your wallet within a few hours after making the deposit.


Since speed is the key here, we will use our Poker account on Seals with Clubs as our wallet in the steps below. CAUTION: Be sure to set up a real bitcoin wallet afterwards. You do not want to use Seals as your permanent wallet! That’s not smart bro.


Create a Seals with Clubs Account


Copy the Cash in Hash Address


Create a Payment Slip on BitInstant. Pay to Bitcoin Address (pay to your “ Cash in Address”)


Deposit the cash at Walmmart, CVS etc.


Bitcoins will show up in your Seals account within a few hours.


Create an account on Seals with Clubs


Go to Your Account and copy your “Current Cash In” address to your clipboard (Ctrl-C)


Go to http://www.bitinstant.com


Choose where you want to deposit to given the choices in the “Pay from”. (example Walmart). There is where you will be taking your cash.


Choose Bitcoin Address in the “Pay to” drop down.


Fill in the rest of the form. Paste the hash address you got from your Seals account into the “Bitcoin Address field”


Click “Send Funds” and Click “go” on the following page after confirming the info.


You are then presented with a list of places close to you to deposit your cash. (They use a service called zipzap for this, a lot like Western Union.)


Fill out the info, select the location, and click “Create Payment Slip”.


Download and print out the payment slip. It will have all the info you need.


WAIT! The deposit is for more than I specified! Yeah, we know, ZipZap charges a fee, on top of the fee that BitInstant pays. This is the fast method for getting bitcoins, not the cheapest.


Head to the deposit place and make the deposit.


Within a few hours, your Seals account will have the coins available for play.


SET UP A WALLET. Don’t forget, once you crush the games, you will need a way to get your money off the site. Go ahead and set up a permanent wallet now, and also think about how you will convert you funds back to your local currency. You can get a software wallet that is stored on your computer, or use a hosted wallet service like Coinbase and Blockchain.info. Our Bitcoin Basics page has all that info.