Share 2.3th/s 2.3t Bitcoin Mining Rig Machine Dragon Miner with Coincraft 28nm Asic Chips Product description Newest model with highest efficiency, compact form factor and built-in power supply!64 x Coincraft A1 28nm ASIC Chips Embedded CGMiner with complete stand-alone operation.After configuring it, the machine mines alone without a PC connection required.Achieve blistering hash rates as high as 2000 GHash/sec sustained Power supply is included 2000 - 2200w operation Weight is about 25KG Instructional guide will be provided upon request Actual hashing speed might be +/- 20% from advertised rate.Product information Technical Details Processor ARM710 Brand Name Mintforge Hardware Platform Linux Operating System Linux Item Weight 55 pounds Product Dimensions 19 x 9 x 15 inches Item Dimensions L x W x H 19 x 9 x 15 inches Color Black Processor Brand ARM Power Source AC Voltage 110 volts Additional Information ASIN B00LVMO9DU Customer Reviews 4.0 out of 5 stars Best Sellers Rank #83,558 in Computers & Accessories > Computer Components Shipping Weight 55.1 pounds Date First Available July 17, 2014 Warranty & Support : Product Warranty: For warranty information about this product, please click here Feedback If you are a seller for this product, would you like to suggest updates through seller support?

Would you like to tell us about a lower price?See questions and answers 14 star100%See all verified purchase reviewsTop Customer ReviewsFour Stars Search Customer Reviews_ Here's how it works: Anybody can ask a question Anybody can answer The best answers are voted up and rise to the top up vote 0 down vote favorite This question already has an answer here: In the ASIC-age, is it worth starting mining Bitcoin at home?I have a server with following specs which is using avg.20% CPU daily : Quad Core 3.20Ghz (E3-1230) 32GB RAM 1Gbps unmetered b/w My questions are : 1).With today's rates does it makes sense to CPU mine Bitcoins, what results should I expect?/calc/ but it does not have anything near to my hardware specs.All other answers to similar questions take the old Bitcoin rates into consideration of profitability - with 1BTC=$1200+ the scenario must have changed a lot ?Secondly, can I use multiple servers and computers to work as a farm towards the common goal of mining bitcoins working as a team and will this help achieve the goal of profitability.

The servers are used for hosting websites and I pay a fixed rental.So there is no additional investment or charges involved.ethereum event may 22mining-pools mining-profitability cpu-mining marked as duplicate by Nick ODell This question has been asked before and already has an answer.ethereum solarIf those answers do not fully address your question, please ask a new question.bitcoin perthup vote 3 down vote Is Bitcoin mining profitable on a 8 core, 32 GB server with unused capacity?litecoin settingsExpect 2-4MH per core.ethereum decision38MH/s for all eight is all but useless.bitcoin api python

Maybe 80c a month, if that.with 1BTC=$1200+ the scenario must have changed a lot ?Browse other questions tagged mining-pools mining-profitability cpu-mining or ask your own question.litecoin online walletBitcoin Jesus 2.0 Roger Ver’s been denied re-entry to the United States recently, since he’s a whiny jerkwad who threw a fit over taxes and renounced his citizenship.bitcoin 2200He can’t come to various Bitcoin conferences in person, so in the vein of fellow Bitcoin criminal Charlie Shrem, he’s going to attend conferences via an iPad on wheels.bitcoin mining ipad 2To celebrate this development, goons spent the afternoon thinking up better names for this arrangement than “Double” or “iPad on a stick”.Powershift: prick on a stick snake on a rake knave on a stave Barnyard Protein: con on a baton My PIN is 4826: dick on a stick fake on a stake Tanith: Fraud rod shrem-stem Graft Shaft Alan Smithee: shitheels on wheels Dex: rolling blunder vOv: tripe on a pipe Nenonen: spergway ayn rand hand job: freep on a leash Exinos: Sovereign stickizen PleasureKevin: free man on the stand Thanks to all the goons above whose work I have shamelessly stolen in the name of the Buttcoin Foundation.

2015 is the year of Bitcoin!Karpeles Did It and the Fine Art of ButtcoinNetwork routing, discover and maintain connections to other clients in the P2P Wire Protocol Network.The blockchain database, having a copy of all transactions.The mining, the work with creating, verifying, publishing and propagating blocks in the blockchain, ensuring consensus on all clients.And get the fee for that work.Maintaining the private/public keys pairs, encoded in a keyfile, saved only in that client, the user is using.The keys are the ownership of Ether, and the identity in the contracts.The DApps, ‘smart’ contracts, running on the Ethereum Virtual Machine, EVM, having states of the contracts stored together with the states of all accounts, saved on each client.Input/output of the contract’s functions are sent through the transactions on the blockchain.Transactions addressing contracts, are triggering the execution of them on the EVM.The Ethereum Client is build to interact with network.As user interface, it has the command line interface for the developer.

API to the client exists as JSON RPC endpoints exposed on top of HTTP, WebSocket and/or IPC transports.The Ethereum community has more then 8 implementations of the Ethereum Client, see the list of clients.The most used are cpp-ethereum (C++), go-ethereum (Go) and pyethapp (Python).The go-ethereum has the executable Geth, you access in the command line interface.The Ethereum Client is started by typing Geth console, and you are given the interactive javascript environment in the command line, in return.Attaching a running client, type Geth attach, and you are given the interactive javascript environment against this client in the command line.Developing DApssContracts are EVM bytecode programs, running on the EVM in the client.To develop contracts, you code them using one of the following language available: Solidity, Serpent or LLL.Solidity is the most common.For the chosen language, you must install the compiler for the language.It is not included in the client.Then the compiled bytecode can be delivered to the client through the command line.

There are more ways to compile the code, see Compiling a contract.If the command line is used, you must give the source code in one line, and first remove end-of-lines.Use remove-line-breaks.You creates a contract on the blockchain by sending a transaction to an empty address with the EVM bytecode.The whole process using Geth command line is described in Contracts.Ethereum Mist WalletIn marts 2016, a new major version of Ethereum, named “Homestead”, was released.Install it and open it.Follow the instruction, choose the TEST-NET for development.And let it run syncronizing — downloading blocks — for about 10–20 min.When finished, you create the main account.Then it is recommended to start mining.Find the menu item Start Mining, under Develop.You will, within 30 min., have enough Ether — from TEST-NET — to be able to create your first contract and other transaction, you want to send.It is only in the TEST-NET, it is so easy to mine some Ethers.In the upper right corner you see the amount of Ether, the Wallet contains.

You can create another account and send some Ether to that account as well.Then you have two account that can interact with your contracts.Creating contract is very easy, click on the CONTRACT ikon in the tool bar, then click on Deploy… — and start writing a contract.Examples, you can start with:create your own crypto-currency,crowdsale, andbuild a DAO.The Ethereum Mist Wallet is a great user app for the developer — for using the Ethereum blockchain, writing contracts and deploying them on the blockchain, sending transactions of any kind, watching contracts and showing latest transactions.It has a generic interface to accessing any contract and its functions.But it is not an end-user application for other than IT-developers.How to develop UI apps — in general?When talking about an app, any webapp or mobile app, accessing the Ethereum Client, we are back on the command line and the API, using JSON RPC endpoints exposed on top of HTTP, WebSocket and/or IPC transports.The interface language is Javascript in the interactive environment on command line.

It is also Javascript in the Web3.js, which make life easy in interfacing with the JSON RPC.Makoto Inoue has made a video tutorial about getting started with webapp interface to the Ethereum Client and using Web3./makoto/homestead-for-dummies.gitRun geth in testnet mode allowing rpc call from local port 8000Startup web server at the port you specified at geth — rpccorsdomain.On Mac you can use python that is included in the OS X.Open the pageThe JSON RPC accessed through Web3.js is not recommended to be used over public internet, but only used as a local interface.Ethereum’s examples shows how to use Web3.js in a html/javascript webapp.Where is the iPhone in this context?Apple’s native language Swift — nice language — and the older one, Objective-C — before Swift, you had to live with it — share the same runtime environment and are the development platform for all the apps known from Apple Store.Apple’s iOS7 was the first iOS version to officially support javascript as a mobile development language.

It was part of the strategy of supporting the 2 development platforms:Native app: Swift/Objective-C platformWeb app: HTML5/JavaScript platformAnd they can both be included in the same app.Using the JavaScriptCore framework you are able to inject javascript from Swift or Objective-C programs within your native apps and get callbacks from the javascript directly into the Swift or Objective-C programs.It can be done in different ways, see the blog: javascriptcore-and-swift.As explained in the blog, the Webkit’s WKWebView is allowed to run javascript at full-speed, using the Safari-engine.The solution is an app including JavaScriptCore using Web3.js against the Ethereum client, and use Apples native apps for the UI.And the JavaScriptCore framework must be running in a background thread within the app, just like normal internet-access should be handled.So the iPhone is always able to respond to incoming phone-calls or respond to common user interaction on the same app busy running interactions with the Ethereum in background.The iPhone development setupThe development setup for this is:The development setupThis is not how the final solution should be.

While we are waiting on the official Light Client to Ethereum, we can actually start developing end-user apps through the development setup, using a Mac as bridge to the Ethereum network.We can start developing a real DApp having its own UI app designed for its contracts in Ethereum.Develop and deploy the contracts is done using Ethereum Mist Wallet.Developing the rest of it is done using the Xcode on Mac.The coming Ethereum Light ClientThe development setup will make sense, if we assume the following about the coming light client:It will contain network routing, discover and maintain connections to other clients in the P2P Wire Protocol Network.The network must be changed to prepare for communication with Light Clients.No blockchain database, but holding copy of own transactions, and holding status of own accounts.No mining.It will contain the private/public keys pairs, encoded in a keyfile, and the maintenance of them — for the users, using the Light Client.No contracts, no Ethereum Virtual Machine, but able to send transactions against contracts in the network.The coming Ethereum Light Client could look like this — in a iPhone context:Coming Ethereum Light Client?Here the Light Client is directly connected to the P2P Wire Protocol Network.