Ethereum Blockchain as a Service now on Azure Posted on November 9, 2015 Microsoft and ConsenSys are partnering to offer Ethereum Blockchain as a Service (EBaaS) on Microsoft Azure so Enterprise clients and developers can have a single click cloud based blockchain developer environment.The initial offering contains two tools that allow for rapid development of SmartContract based applications: Ether.Camp - An integrated developer environment, and BlockApps - a private, semi-private Ethereum blockchain environment, can deploy into the public Ethereum environment.The Enterprise Partner Group at Microsoft is on the front lines with some of our largest customers.Everyone, particularly Financial Services, is interested in Blockchain technology.While a platform like Bitcoin has many great uses specifically as a Cryptocurrency, Ethereum provides the flexibility and extensibility many of our customers were looking for.With the Frontier Release last summer, Ethereum is real and has a vibrant community of developers, enthusiasts and businesses participating.

In Financial Services particularly, Blockchain is a major disruptor to some of their core businesses, and FinTech companies are driving innovation in this space.Ethereum is open, flexible can be customized to meet our customer’s needs allowing them to innovate and provide new services and distributed applications or Đapps.Ethereum enables SmartContracts and Distributed Applications (ĐApps) to be built, potentially cutting out the middleman in many industry scenarios streamlining processes like settlement.But that is just scratching the surface of what can be done when you mix the cryptographic security and reliability of the Blockchain with a Turing complete programming language included in Ethereum, we can’t really image what our customers and partners will build.“Ethereum Blockchain as a Service” provided by Microsoft Azure and ConsenSys allows for financial services customers and partners to play, learn, and fail fast at a low cost in a ready-made dev/test/production environment.

It will allow them to create private, public and consortium based Blockchain environments using industry leading frameworks very quickly, distributing their Blockchain products with Azure’s World Wide distributed (private) platform.That makes Azure a great Dev/Test/Production Environment for Blockchain applications.Surrounding capabilities like Cortana Analytics (machine learning), Power BI, Azure Active Directory, O365 and CRMOL can be integrated into apps launching a new generation of decentralized cross platform applications.bitcoin sole 24It is an exciting time.apple pulls bitcoinCheck out our templates and search for Ethereum.bitcoin sole 24FAQ How is Ethereum different or the same as Bitcoin?stolen bitcoin private key

Bitcoin and Ethereum are very closely related.Both are founded on the same five underlying classes of technology: A data structure called the Blockchain which serves as the back-end database.The blockchain is a time-stamped, non-repudiable database that contains the entire logged history of the system.Each transaction processor on the system maintains their own local copy of this database and the consensus formation algorithms enable every copy to stay in sync.ethereum trading volumeA cryptographic token, the Bitcoin (BTC) in the Bitcoin protocol, and ether (ETH) for Ethereum.o que e mineracao de bitcoinBTC serves as the cryptographically secured unit of value, numeraire and currency in the case of the Bitcoin protocol and hybrid fuel/currency used as a Cryptocurrency.bitcoin usb block

ETH serves as the cryptographically secured unit of value, numeraire and hybrid fuel/currency for the Ethereum protocol.A peer-to-peer network for discovery and communications.This turns the traditional client-server architecture into one in which all nodes are both clients and servers, decentralizing the system and removing single points of control or vulnerability.A consensus formation algorithm.best bitcoin wallet yahooIn Bitcoin, all transaction processors (miners) come to consensus about what happened and when with respect to transmission and storage of the Bitcoin value token.sms bitcoin alertThis happens approximately every 10 minutes.This requires a slim majority of honest processors.In Ethereum, all transaction processors (miners) come to consensus about what happened and when with respect to transmission and storage of the ether value token as well as coming to an agreement about all of the processing that is done in all of the shared programs on the Ethereum World Computer.

This happens approximately every 15 seconds.A virtual machine that enables decentralized applications in Ethereum and programmable money in Bitcoin.Where can I learn more?Developer Virtual Machines Security Internet of Things Blockchain Blockchain as a Service Ethereum Bitcoin Azure Financial Services Banking Capital Markets Insurance ConsenSysThis Microsoft Azure template deploys a single Ethereum client with a private chain for development and testing.Once your deployment is complete you will have a sandbox environment with: A Genesis file loading the provided private key with funds to test on the network A private key** to import on into your ethereum node A script to activate your private blockchain and begin interacting with the Ethereum protocol.** Note this private key is exposed on a public GitHub repository.It should never be used on a public network.If you use this key for anything besides sandbox testing purposes, your funds will be lost!When you launch the installation of the cluster, you need to specify the following parameters: then click browse all, followed by "resource groups", and choose your resource group then expand your resources, and public ip address of your node.

Connect to your geth node SSH to the public ip of your node as the user you specified for adminUsername By running the ls command you should see three files: genesis.json, GuestBook.sol, priv_genesis.key and start-private-blockchain.sh.Import the private key into geth by running the command geth account import priv_genesis.key Accept the legal disclaimer Enter a password to secure the key within geth (remember this!we'll use it later) Initiate the private blockchain Run the command sh start-private-blockchain.sh to create your genesis block for your private Ethereum blockchain You are now in the go-ethereum command line console.You can verify that your private blockchain was successfully created by checking the balance via the console: eth.getBalance('7fbe93bc104ac4bcae5d643fd3747e1866f1ece4') You are now able to deploy a smart contract to the Ethereum network.Kill the current process (ctrl+d) - we'll get back to the console shortly Welcome to the Ethereum ecosystem.

You are now on your journey to becoming a decentralized application developer.Earlier when you ran the ls command there was a file named GuestBook.sol - this is a very simple guest book contract written in the Solidity smart contract programming language.Learning Solidity is beyond the scope of this walk through, but feel free to read the code and try to understand what the contract is trying to do.Getting familiar with Solidity contracts and deploying them to the network can be a bit of a learning curve - there are a number of different steps in the journey from source code to having a contract live on the public network; we'll try to address each of these steps.The file GuestBook.sol is an example of a smart contract's source code - written in the Solidity programming language.Solidity is one of the smart contract languages which compile down to the Ethereum Virtual Machine's byte code.Decentralized application developers write contracts in Solidity (or its cousin languages Serpent & LLL) in order to realize the benefits of programming in higher level languages.

However the .sol files are not what get loaded to the Ethereum network; instead we have to compile the code.Our next step is to take the GuestBook.sol and compile it in the geth console.To make our lives easier we can remove new lines from the file by running the command: cat GuestBook.sol | tr ' ' ' ' and copying the output.Next, lets start our node back up - sh start-private-blockchain.sh The Geth console actually implmements a JavaScript Runtime Environment; so if you have familiarity with NodeJs this should be a comfortable environment.Let's set a variable containing our source code: And now we can proceed to compile this source code.The call to the solidity function returns us a JSON object which contains the EVM byte code (guestBookCompiled.GuestBook.code), as well as the ABI definition of the contract (guestBookCompiled.GuestBook.info.abiDefinition).Great - we have the source, and the compiled version of this source.Unfortunately for us, having these two things isn't exactly useful to us - we need to get the contract deployed to the network.

The next step is to use the web3 ethereum helpers to instantiate a contract object: This will give us an instantiated contract object containing the all important new function.new is what we'll use to actually deploy the contract to your Ethereum private network.Since we're in Javascript land, new takes a call back as its final parameter to notify us of successful or failed deployment; lets set up this call back first: Next we'll need to define the contract initialization object which contains three key/value pairs: from - the address that is posting the contract data - the raw code from the contract gas - the initial gas that we're posting for the contract We are now ready to deploy!Remember that new method?We can finally use it: You will need to enter the password you entered when first importing the private key to unlock your account.Congratulations - you have a contract deployed to the Ethereum network!...except for one little detail.As it turns out, simply sending the contract to the network isn't sufficient - there is a missing component: having the contract mined.

On the public network this would be solved for us simply by waiting approximately 15 seconds before the contract is added to the blockchain.However since this is our own private test network; there are no miners to speak of.How do we solve this problem?By turning on CPU mining locally: We'll have to wait a little bit while your node generates its Directed Acyclic Graph (DAG).This process is what helps the Ethereum network be resistant to ASIC mining; but that's a topic for another time.Once the DAG is generated, our node will start mining.We'll see console messages like: And eventually our call back will fire: Contract mined!Congratulations - your contract is now alive on the Ethereum Network!Go ahead and stop your miner for the moment: Our contract is now permanently stored on the blockchain - we can learn the contract's address by interrogating our guestBook object: guestBook.address The object returned will give us the address of the contract, as well as a hash of the contract and also all of the functions we defined in our original solidity source code.

We can read our guest book's entry via a call to guestBook.getMyEntry() Giving it a try we get the response: The empty string is expected - we haven't yet written an entry to the contract's storage.For this we will have to send a transaction to the contract and tell it to invoke the setEntry function.In our previous example we were able to call the guestBook.getMyEntry() function directly and receive a response synchronously from our local node.This is possible since read operations do not create a state change in the contract - no need to tell the network we are updating data.However our next function all guestBook.setEntry() writes data to the contract's internal storage - here's the function declaration for a refresher: In order for us to write to the entryLog of the contract and have that update stored in the blockchain, we need to send a transaction to the contract address.Now if we read from the contract again we should see the following: An empty string again - because we haven't yet mined this new transaction.