Users Ethereum Android targets three User Groups, Endusers, Android Developers, and Business.Enduser Developer Business Your mobile Portal to Ethereum We designed the App so that both technological savvy and just casual users can benefit from it.You can use Ethereum Android completely out of the box without installing any extra software or setting up any infrastructure.In case you do want to be fully decentralized, you can, at any time, just switch to your own node.The app itself is a fully functional Ethereum Wallet optimized for Android with similar functionality to the well known Mist Browser.Send and receive Ether Interact with Smart Contracts Connect to any type of Ethereum based Blockchain Completely Anonymous Use your own Infrastructure securely - Secure Proxy Keyless Mode for external Signing of Transactions - Read more Download Now Empower your App with Blockchain Technology As Android developers ourselves, we were very excited about the possibilities Blockchain technology holds for Android app development.

In lack of a possibility to equip native Android apps with Blockchain functionality, we decided to develop a developer-friendly API to use the Ethereum Virtual Machine.Our library enables you to securely interact with every Ethereum based blockchain from within your Android application.Ethereum Android makes sure that the whole communication between node and client is end-to-end encrypted.We developed the API to let developers benefit from Blockchain technology without the hassle of setting up and running their own node.bitcoin qt save locationDiscover the API *Example of the submitTransaction-API-Call from an external App Ethereum Android for Business Blockchain Technology is sought to have the same impact as the internet had in the 90s and many companies - especially of the financial services industry - are already investing billions in Blockchain related projects.hidden wiki bitcoin

Blockchains not only enable trustless exchange between two parties without intermediaries, they also remove friction of any type of interbusiness transaction resulting in significantly lower transaction costs and faster settlement of transactions.Ethereum as a decentralized application platform was designed to be more open and customizable than the Bitcoin Blockchain protocol and companies are already deeveloping their own custom Blockchains.bitcoin easter eggWe are developing Ethereum Android to be easily integrateable in existing systems and provide tools and extension points for companies to evolve into using Blockchain Technology while still sticking to their approved and oftentimes not so easily replaceable infrastructure.bitcoin news fidelityYour benefits Supports Enterprise Blockchains out of the box Proof-of-Authority Chains - instantly verified transactions Auto deployment and configuration via Enterprise Mobility Management Systems like Android for Work Centrally managed access rights and roles Contact Us *This is how a company could use a custom Blockchain with Ethereum Androidseized bitcoin address

This is an archived post.You won't be able to vote or comment.234Sending ether via geth (self.ethereum)submitted by I've recently updated both ubuntu and geth, now having issues with sending eth to an exchange : eth.sendTransaction({from:eth.accounts[0], to:"0xxxxxxxxxxxxxxxxxxxxxxxxxx", value: 2}) Instead of getting the prompt to unlock account (Please unlock account XXX.)I am getting this : account is locked at web3.js:3119:20 at web3.js:6018:15 at web3.js:4990:36 at :1:1 EDIT : I've managed to unlock the account via the command line (geth --unlock XXXXXXXXXXXXXXXX console) Someone should change this page as it is no longer correct : https://ethereum.gitbooks.io/frontier-guide/content/sending_ether.html π Rendered by PID 13986 on app-510 at 2017-06-24 11:32:06.095409+00:00 running 3522178 country code: SG.bitcoin cours du jourWhat is the real world application?We have Providers that provide services to people, such as internet, telephone, water, food and shelter.bitcoin kaufen via paypal

People who want to use these services can subscribe to these services.Providers can charge debts that Users owe for utilising the service.Users can clear their debts by sending ether to the Provider.Providers have jobs that they keep track of in order to provide their services and hire staff to complete those jobs.Staff Users can get paid by withdrawing ether from the Provider.This post will cover the engagement of a Staff user completing a job and withdrawing ether from the Provider contract in order to help provide clarity around Invalid JUMP errors with sending ether to a contract.ethereal gem tradeWe’ll use the Singularity Kitchen as an example.ethereum time per blockI’ll first present the tests and then smart contracts.Disclaimer contracts are not audited and contain security flaws, do not use for any other purpose than learning.I’ll walk through these two tests here, the rest of tests for the contract can be found on the github repo.In ‘init’, we create a new instance of the Kitchen contract by using the new method with some arguments and data about who is sending this transaction.

Creating a new instance of a smart contract returns the Smart Contract and we can check if the smart contract has an address, if it does then we set it to a global variable ‘kitchen’.If the contract does not have an address then we throw a new error.In ‘pay-out-job’, we first check to see that the kitchen contract has ether to pay people.Then we try to call on the payOutJob function from the kitchen contract.It takes an address of a User contract and the jobName that was completed.This transaction is called upon by some kind of owner like an authorized user who is allowed to engage with the contract to pay people for completing jobs.Once the payoutjob function will return a txHash, we’re not going to do anything with the txHash, but we could console log it and see the data that it contains.We’re going to call on a public attribute of the contract ‘staffList’ which is a mapping data type so we’ll pass in the address of the User contract.Passing in the address of the User contract into staffList will return a struct data type that contains a field for storing information about the payout to the Staff User.

We can access contents of the struct by calling upon them like elements in an array.StaffInfo[2] is a uint256 data type and we can call a toString method to get the amount to be paid to the User contract in Wei.Here we’re asserting that it is 300000000000000000 Wei or the rate of the “Single Customer Order” Job that is set in the Kitchen contract.When the Staff User is ready to collect their payout, they can call on the collectPayout function from the Kitchen contract.We get back a transaction hash and call on the staffList so that we can check that there has been a change in the struct.We check that the payout has been set to 0 and that the balances of both the Kitchen and the Staff contract have changed appropriately.The two smart contracts that we need in order to provide autonomy for this engagement are a User contract and a Provider contract.I’m building off of these contract from this YouTube tutorial series by Shlomi Zeltsinger.I’ll highlight some functions in the contracts that are relevant to this post.

Here’s a really helpful example of sending ether.In our test, the ‘staff’ variable is an instance of the User contract.The big function to highlight and the main reason for writing this code review is the payable function.This is a fallback function.A fallback function is a function that doesn’t run any anything.More about fallback functions can be found here.If a contract is receiving ether it needs to have this fallback function otherwise you’ll receive an Invalid Jump error.The payOutJob function takes an User contract address and the name of a job and all this function does is gets the payout field from the staffUser struct by calling on the staffList mapping using the User contract address and then updates the payout by getting the job rate field from the Job struct by calling on the jobs mapping using the jobName.The collectPayout function takes a User contract address and sets a variable _amount to the payout field from the staffUser struct by calling on the staffList mapping using the User contract address.