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web3.js library, the Ethereum JavaScript API
 
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This video explains what the purpose is of the web3.js library and how to use it. The web3.js library is also known as the Ethereum JavaScript API. To communicate with an Ethereum node or transact with a smart contract deployed on the blockchain from inside a JavaScript or web application you can use the web3.js library. Under the hood the web3.js library communicates with an Ethereum node through JSON RPC calls. The Ethereum node must expose its a RPC layer. The MetaMask extension exposes the web3 API by an injected web3 object which you can access via JavaScript. The MetaMask extension does not support most synchronous web3 API methods. Make your method calls asynchronous! To use the web3.js library in your web application: - Download the web3.js library from: https://github.com/ethereum/web3.js - In the dist folder you will find the files web3-light.min.js and web3.min.js - The file web3.min.js contains the Bignumber module and the file web3-light.min.js does not. If you do not know which one to choose, then use file web3.min.js. Web3.js API code examples can be found at: http://www.mobilefish.com/download/ethereum/web3api.html In the examples asynchronous methods were used if they are available. The demonstration Ethereum Dapp is made for educational purpose. The web interface can be found at: http://www.mobilefish.com/download/ethereum/DemoDapp.html The associated Solidity contract can be found at: http://www.mobilefish.com/download/ethereum/DemoContract.sol.txt The main purpose of this Dapp is to learn how to use web3.js api (v0.x.x) and how interact with a deployed smart contract. To setup the demonstration Ethereum Dapp (DemoApp.html): - Download and deploy the DemoContract.sol smart contract on any test network (testrpc, ropsten, rinkeby, or your own private ethereum node, etc). Save the contract address you will need it later. - Download and install the DemoApp.html on your web server. - Download and install the web3.min.js (v0.19.0) on your web server. - Modify the path to web3.min.js in the DemoApp.html file. - Modify the contract address in the DemoApp.html file. How to use the demonstration Ethereum Dapp (DemoApp.html): - Use a test network. - Have a test account with enough ethers to experiment with. - The demonstration Dapp (DemoApp.html) also works well with MetaMask. Notes: Two versions of DemoApp.html has been created. - A version using callbacks which is not very readable because of using callback trees! For educational purpose you can find this version at (but do not use it!): http://www.mobilefish.com/download/ethereum/DemoDappv0.1.html - The original code has been refactored by using JavaScript Promises. http://www.mobilefish.com/download/ethereum/DemoDapp.html - The DemoApp.html uses only vanilla JavaScript an uses the web3.js library. All code meaning: JavaScript, HTML and CSS can be found in this single web page. Warnings: - The DemoApp.html does not work with the web3.js v1.0.0. - The web3.js library v1.0.0 has many changes. The DemoApp.html will soon be obsolete. - Use the Demonstration Ethereum Dapp on a test environment. Check out all my other Ethereum related tutorial videos: https://goo.gl/eNJVXe Subscribe to my YouTube channel: https://goo.gl/61NFzK The presentation used in this video tutorial can be found at: http://www.mobilefish.com/developer/blockchain/blockchain_quickguide_ethereum_related_tutorials.html The DemoContract.sol used in the video: http://www.mobilefish.com/download/ethereum/DemoContract.sol.txt To interact with the DemoContract.sol use the demonstration Ethereum Dapp (using Javascript Promises): http://www.mobilefish.com/download/ethereum/DemoDapp.html An older version of the demonstration Ethereum Dapp (do not use this): http://www.mobilefish.com/download/ethereum/DemoDappv0.1.html More information about RPC layer can be found at: https://youtu.be/oOfDzXBXoOg The web3.js library can be found at: https://github.com/ethereum/web3.js The web3.js API v0.x.x can be found at: https://github.com/ethereum/wiki/wiki/JavaScript-API The web3.js API v1.0 can be found at: http://web3js.readthedocs.io/en/1.0/ MetaMask web3 API can be found at: https://github.com/MetaMask/faq/blob/master/DEVELOPERS.md #mobilefish #howto #ethereum
Views: 14357 Mobilefish.com
Web3.JS: Ethereum JavaScript API
 
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Web3.js is the official Ethereum Javascript API. You use it to interact with your Ethereum smart contracts. Watch this talk about the new developments in Web3.js EVENT: devcon three 2017 SPEAKER: Fabian Vogelsteller PERMISSIONS: The original video was published with the Creative Commons Attribution license (reuse allowed). CREDITS: Original video source: https://www.youtube.com/watch?v=92pdrRH_VGA
Views: 8995 Coding Tech
Ethereum dApp tutorial - Front end. Part 1
 
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Please read! In this video I introduce the tools that are needed to build a user interface that will allow interaction with the Ethereum blockchain. Web3.js github: https://github.com/ethereum/wiki/blob/master/JavaScript-API.md Meteor: https://www.meteor.com/ Meteor web3: https://atmospherejs.com/ethereum/web3 Metamask: https://metamask.io/ Meteor for begginers. Great tutorials: https://www.youtube.com/playlist?list=PLLnpHn493BHECNl9I8gwos-hEfFrer7TV Creating smart contracts using Solidity: https://www.youtube.com/playlist?list=PLH4m2oS2ratdoHFEkGvwvd7TkeTv4sa7Z If you loved this video, show me the love! BTC - 1LxhkGzGu6q2LSfAGuH2DNBChmLhHkuQzP ETH - 0x9f24bde4cD92560D04A159C30f46E7820e31d95c http://zeltsinger.com/
Views: 49654 Shlomi Zeltsinger
Web3.js Intro · Web3.js · #1 Ethereum Blockchain Developer Crash Course
 
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► SUBSCRIBE TO THIS CHANNEL ◄ For more videos on how to build decentralized applications on The Ethereum Blockchain: https://www.youtube.com/channel/UCY0xL8V6NzzFcwzHCgB8orQ?sub_confirmation=1 DOWNLOAD FREE VIDEO COURSES: http://www.dappuniversity.com/free-download How to Build Ethereum Dapp (Decentralized Application Development Tutorial) https://youtu.be/3681ZYbDSSk Donate Ether to the channel: 0x39C7BC5496f4eaaa1fF75d88E079C22f0519E7b9 Website: http://dappuniversity.com/ Follow me on Twitter (@DappUniversity): https://twitter.com/DappUniversity Email me: [email protected]
Views: 10097 Dapp University
Создание web-приложения для взаимодействия с блокчейном Ethereum на платформе Meteor
 
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Курсы по разработке на Ethereum: http://ethereumworks.com/?ch=yts&utm_source=yts&utm_medium=youtubesl&utm_campaign=youtubesl&utm_term=youtubesl. Telegram чат для разработчиков: https://t.me/smart_contracts_dev; Самые свежие новости и статьи по криптокодингу - https://t.me/cryptocoding_news Предыдущее видео (создание и запуск первого умного контракта в сети Ethereum) - https://www.youtube.com/edit?o=U&video_id=Afr_PakSW5g Проект Meteor - https://www.meteor.com/ API пакета Web3 JavaScript - https://github.com/ethereum/wiki/wiki/JavaScript-API Sublime Text - https://www.sublimetext.com/ BAT файл для запуска Geth - https://drive.google.com/open?id=0B3_WGJKO-9L7X3hUbTFqZWFHWEk Cвязаться со мной можно через Skype - v.poskonin (Mouse Po). Канал можно поддержать отправив донат на биткоин-кошелек: 17Zs1nhgBB92CeCxFbbB7WhT9MdypJAj1d, или кошелек Ethereum: 0x9740Cd40296744a0aE2aFD115933a791Da4c2AD8.
Interact With Ethereum Smart Contracts Using Golang | Blockchain
 
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In this video, I discuss how you can interact with a deployed Ethereum smart contract using Go. Source Code: https://github.com/what-the-func/ethereum-contracts-golang Solc Installation: https://solidity.readthedocs.io/en/develop/installing-solidity.html Check out my other videos and articles http://edzynda.com Follow me on Steemit https://steemit.com/@edzynda 💎►Donate Ether and Ethereum-Based (ERC-20) Tokens 0x146cfed833cc926b16b0da9257e8a281c2add9f3 💎►Donate Bitcoin 1KyZbSeeCWgmeRrUQTTbb3meJEyPCGy3zd 💎►Donate Dash XoZdSzN3hPFksQQZx616A6fGGN22zANpMW 💎►Donate Lisk 16883042352161362207L
Views: 1829 What The Func?
Ethereum for Python Developers
 
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Everything you need to know to get started with Ethereum with Python. Piper Merriam Ethereum Foundation python team lead.
Views: 3766 Ethereum Foundation
⛓️ Blockchain Developer Essentials PART 3: ETHEREUM Test RPC and Web3.js
 
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⛓️ Blockchain Developer Essentials PART 3: Test RPC and Web3.js | Vlad Wulf Blockchain Developer 😀😀😀 This is the part you've been waiting for. Learn how to bind you blockchain with your backend using http protocol and send data from the blockchain to the frontend. We are using Test RPC and Web3 version 1.0 👫 Social Networks: Mail: [email protected] LinkedIn: https://www.linkedin.com/in/vladimir-a-16334213b/ Steemit: https://steemit.com/@vladwulf Facebook: https://www.facebook.com/VladWulfTutorials/ Twitter: https://twitter.com/VladWulf 😍 Donations: Paypal: [email protected] Ether: 0x854F6C6C00Fc6e197B4f5aC48D1bac4210fE
Views: 7797 Vlad Wulf
Building And Deploying Ethereum Smart Contracts With Solidity and JavaScript
 
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Watch this talk to learn how to build smart contracts on top of Ethereum platform. We will also cover how to use Solidity and JavaScript for smart contracts development as well as how to design and deploy basic contract to the Ethereum blockchain. EVENT: Talk recording from AmsterdamJS March 2018 Meetup SPEAKER: Mikhail Kuznetcov PERMISSIONS: AmsterdamJS Meetup Organizer provided Coding Tech with the permission to republish this video. CREDITS: Amsterdam JSNation YouTube channel: https://www.youtube.com/channel/UCQM428Hwrvxla8DCgjGONSQ
Views: 8418 Coding Tech
Demo: Create an Ethereum Smart Contract
 
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http://bit.ly/bitcoincourse Demo showing how to send ether, create and deploy a Smart Contract using the Ethereum Wallet. Part of a larger 3.5 hr course on Bitcoin and Decentralized Technology.
Views: 121034 CuriousInventor
2 How to create a local private multi-node Ethereum network (geth console)  - Ethereum from scratch:
 
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Part two of my hands on tutorial series on Ethereum. In the first video we installed Geth - in this one we actually get our hands dirty and start using it. We are just creating a private local ethereal network - with two nodes - I show how to initialise a new blockchain from a sample genesis block, how to start the javascript console and some basic commands to get you started. I start a miner, show the block height increasing and that the blockchain is being communicated across both separate nodes. This is intended to be a very hands on tutorial so please follow along. ______________________________________________________________ Here is the script from the session. NOTE angle brackets i.e. the GREATER THAN SYMBOL are not allowed in the description so I've replaced with &gt - you need to replace with the GREATER THAN symbol when running the command 0. Set up the environment cd ~ mkdir ethereum echo 'export ethereum_home=/Users/mattthomas/ethereum' (double right arrow) ~/.bash_profile ~/.bash_profile cd ethereum vi $ethereum_home/genesis.json (pasre this with cmd v in edit mode) { "nonce": "0x0000000000000042", "timestamp": "0x0", "parentHash": "0x0000000000000000000000000000000000000000000000000000000000000000", "extraData": "0x0", "gasLimit": "0x8000000", "difficulty": "0x400", "mixhash": "0x0000000000000000000000000000000000000000000000000000000000000000", "coinbase": "0x3333333333333333333333333333333333333333", "alloc": { } } Save with esc !wq 1. initialise the block geth --datadir "$ethereum_home/youtube1" init "$ethereum_home/genesis.json" 2. start the console geth --datadir "$ethereum_home/chain5" console 2 &gt console.log 3.create a 2nd node geth --datadir "$ethereum_home/youtube1-a" init "$ethereum_home/genesis.json" 4. Start on a different port and specify networkid geth --datadir "$ethereum_home/youtube1-a" --port 30304 --nodiscover --networkid 1234 console 2 &gt console.log 5. get the admin.nodeInfo enode from the second instance and copy it into admin.addPeer in the first node 6. Restart specifying IPC path geth --datadir "$ethereum_home/youtube1-a" --port 30304 --nodiscover --ipcpath "$ethereum_home/youtube1-a/geth.ipc" --networkid 1234 console 2 &gt console.log 7 run get attach to attach another window to the node using the pic file geth attach ipc:$ethereum_home/youtube1-a/geth.ipc 8 Key commands from the javascript console Personal.newAccount() (add password) Miner.start(1) - start mining eth.blockNumber - current block height eth.getBlock(number).miner - miner of block at that number eth.getBalance(account address) - current balance of that account
Views: 30112 Matt Thomas
How to Build Ethereum Dapp (Decentralized Application Development Tutorial)
 
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► SUBSCRIBE TO THIS CHANNEL ◄ For more videos on how to build decentralized applications on The Ethereum Blockchain: https://www.youtube.com/channel/UCY0xL8V6NzzFcwzHCgB8orQ?sub_confirmation=1 DOWNLOAD THIS VIDEO: http://www.dappuniversity.com/free-download GET THE STEP-BY-STEP ARTICLE: http://www.dappuniversity.com/articles/the-ultimate-ethereum-dapp-tutorial Table of Contents 1. Smoke Test [11:40] Code: https://github.com/dappuniversity/election/releases/tag/1-smoke-test 2. List Candidates [27:10] Code: https://github.com/dappuniversity/election/releases/tag/2-list-candidates 3. Cast Votes [1:13:38] Code: https://github.com/dappuniversity/election/releases/tag/3-cast-votes 4. Watch Events [1:48:05] Code: https://github.com/dappuniversity/election/releases/tag/4-watch-events Install Dependencies [8:53]: Before downloading app code from table of contents, install dependencies and follow setup instructions. And make sure you run `$ npm install`. Full App Code: https://github.com/dappuniversity/election Donate Ether to this channel: 0x39C7BC5496f4eaaa1fF75d88E079C22f0519E7b9 Follow me on Twitter (@DappUniversity): https://twitter.com/DappUniversity Email me: [email protected]
Views: 107841 Dapp University
How to Build a Blockchain Integrated Web Application on Ethereum - Part 1
 
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Get more content like this for FREE at https://www.techmaker.tv. This series is going to teach you how to build a blockchain integrated, web application from scratch. We will start by building a set of Ethereum smart contracts inside of the Truffle Framework with TDD. Once we have developed our smart contracts, we'll build a web app with Ruby on Rails that interacts with it. By working through both sides of the process in a single series, you'll see how to build a complete decentralized application (DApp) from scratch, in-depth. The goal is to keep things simple so that you can see how all of the pieces fit together inside your own projects. That said, this series may be a bit lengthy. This episode dives into setting up Truffle and creating your first smart contract. We build out a voter registration contract as the first piece of a voting system using TDD. Helpful Links: Ethereum https://ethereum.org/ Solidity http://solidity.readthedocs.io/en/v0.4.24/ Truffle http://truffleframework.com/
Views: 871 TechmakerTV
Ethereum Smart Contracts In Solidity 1 -  State, Functions, Modifiers and Events | Blockchain
 
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In this tutorial, I show you the basics of Ethereum smart contracts and explain state variables, functions, modifiers and events. Remix - Solidity IDE - https://remix.ethereum.org Solidity Documentation - https://solidity.readthedocs.io/en/develop/ Check out my other videos and articles http://edzynda.com Follow me on Steemit https://steemit.com/@edzynda 💎►Donate Ether and Ethereum-Based (ERC-20) Tokens 0x146cfed833cc926b16b0da9257e8a281c2add9f3 💎►Donate Bitcoin 1KyZbSeeCWgmeRrUQTTbb3meJEyPCGy3zd 💎►Donate Dash XoZdSzN3hPFksQQZx616A6fGGN22zANpMW 💎►Donate Lisk 16883042352161362207L 💎►Donate IOTA SRZWULMJI9WJFVWDIVXXMVWHVVJAKMAXKMFOINQGEZXNJYLRSHPXBE9PHQDUVIRESEUZSYJBGGKLBMEYIJOKIOIXBU
Views: 9469 What The Func?
Introduction to Bitcoin, Blockchain, and Ethereum // PDFfiller meetup
 
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Introduction to Bitcoin, Blockchain, and Ethereum. PDFfiller meetup. В этом видео  Александр Пехота, Technical Project Manager API at PDFfiller, и Иван Ткачук, JS Developer API at PDFfiller, расскажут о следующем:  - чем реальные деньги отличаются от bitcoin’ов - почему bitcoin полностью анонимна  - зачем нужна цифровая подпись - что такое цепочка блоков (blockchain) и зачем она нужна - кто такие майнеры и их роль в криптовалютном мире - минусы bitcoin и роль Ethereum как криптовалюты нового поколения - что такое смарт контракты - развитие децентрализованной идеи в смарт контракт Ethereum - примеры использования смарт контрактов Если у тебя есть вопросы к спикерам, пиши прямо здесь в комментариях. Подписывайся на наш канал, чтобы быть в курсе новостей компании PDFfiller: https://goo.gl/ocQzUp Узнавай больше о нашей компании в соц. cетях: Facebook : https://goo.gl/sH95Pr Linkedin: https://goo.gl/IrH9xl Twitter: https://goo.gl/XsMmxz Хочешь к нам присоединиться? Ищи подходящую вакансию по ссылке https://goo.gl/07jhkp Пиши нам в skype: Анастасия Завадская - anastasia.zavadskaya Оля Сидоренко - olya.sidorenko.94 И, конечно же, заходи на сайты компании: https://www.pdffiller.com/ http://pdffiller.com.ua/about.htm
Views: 244 PDFfiller Ukraine
Ethereum BlockChain Tutorial - Ethereum BlockChain Installation on Window - Part1
 
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Our intention is to make new technologies & emerging tools installation easy for students, beginners & experienced professionals. Prerequisities - To install Nodejs - https://youtu.be/SS7V8OUOzIM Installation Commands - 1. Ethereum - npm install ganache-cli 2. npm install [email protected] 3. Web3 = require('web3') web3 = new Web3(new Web3.providers.HttpProvider("http://localhost:8545")); 4. To view all the accounts available on Ethereum web3.eth.accounts
Views: 1396 Abhishek Jain
Ethereum для начинающих. Geth JSON-RPC API.
 
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На этом уроке продолжаем изучать Geth и научимся использовать JSON-RPC API. https://github.com/ethereum/wiki/wiki/JSON-RPC - документация JSON-RPC API Geth.
Views: 98 doIT
Frontend Web Applications On Ethereum 3 - Sending Tokens | Blockchain
 
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The full code for this lesson is located here: https://github.com/what-the-func/func-wallet/tree/frontend-ethereum-part3 In this video we continue working on the Func Wallet example from the previous video. We're now able to view basic wallet information and our Ether and Token balances. The next step is implementing the "Send Tokens" component. Remix - Solidity IDE - https://remix.ethereum.org Solidity Documentation - https://solidity.readthedocs.io/en/develop/ ERC20 Standard - https://github.com/ethereum/eips/issues/20 EthereumJS TestRPC - https://github.com/ethereumjs/testrpc Web3JS - http://web3js.readthedocs.io/en/1.0/ Check out my other videos and articles http://edzynda.com Follow me on Steemit https://steemit.com/@edzynda 💎►Donate Ether and Ethereum-Based (ERC-20) Tokens 0x146cfed833cc926b16b0da9257e8a281c2add9f3 💎►Donate Bitcoin 1KyZbSeeCWgmeRrUQTTbb3meJEyPCGy3zd 💎►Donate Dash XoZdSzN3hPFksQQZx616A6fGGN22zANpMW 💎►Donate Lisk 16883042352161362207L 💎►Donate IOTA SRZWULMJI9WJFVWDIVXXMVWHVVJAKMAXKMFOINQGEZXNJYLRSHPXBE9PHQDUVIRESEUZSYJBGGKLBMEYIJOKIOIXBU
Views: 4053 What The Func?
03. Web3.js Tutorial - Attach a GUI to your Ethereum Smart Contract
 
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Free Course Page (In development): https://goo.gl/EiKpPP Written tutorial of this video: https://goo.gl/RdXuz9 https://coursetro.com This video is the 3rd lesson from my 100% free course: "Developing Ethereum Smart Contracts for Beginners" Check it out here: https://goo.gl/EiKpPP In this video, we're going to take our smart contract we created in the previous lesson, and make it accessible via a web page with the help of the official Ethereum Web3.js client and Ethereum-testrpc. https://coursetro.com https://www.facebook.com/coursetro/ - - - - - - - - - - - - - - - - - - - - - - Subscribe for NEW VIDEOS weekly! My Patreon: https://www.patreon.com/designcourse My site: https://coursetro.com My personal FB account: http://fb.com/logodesigner Coursetro FB: http://fb.com/coursetro Coursetro's Twitter: http://twitter.com/designcoursecom Join my Discord! https://discord.gg/a27CKAF ^-Chat with me and others - - - - - - - - - - - - - - - - - - - - - - Who is Gary Simon? Well, I'm a full stack developer with 2+ decades experience and I teach people how to design and code. I've created around 100+ courses for big brands like LinkedIn, Lynda.com, Pluralsight and Envato Network. Now, I focus all of my time and energy on this channel and my website Coursetro.com. Come to my discord server or add me on social media and say Hi!
Views: 58847 DesignCourse
Frontend Web Applications On Ethereum 1 - TestRPC and Web3.js | Blockchain
 
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Ethereum allows you to create powerful smart contracts on the blockchain. The true power of Ethereum though, is the ability to create complex, decentralized applications or DApps. A great DApp ties smart contracts with an intunitive user-interface that allows the average user to leverage the power of the Ethereum network. In this video we begin to explore how to implement a web frontend that talks to our smart contracts deployed on the blockchain. Remix - Solidity IDE - https://remix.ethereum.org Solidity Documentation - https://solidity.readthedocs.io/en/develop/ ERC20 Standard - https://github.com/ethereum/eips/issues/20 EthereumJS TestRPC - https://github.com/ethereumjs/testrpc Web3JS - http://web3js.readthedocs.io/en/1.0/ Check out my other videos and articles http://edzynda.com Follow me on Steemit https://steemit.com/@edzynda 💎►Donate Ether and Ethereum-Based (ERC-20) Tokens 0x146cfed833cc926b16b0da9257e8a281c2add9f3 💎►Donate Bitcoin 1KyZbSeeCWgmeRrUQTTbb3meJEyPCGy3zd 💎►Donate Dash XoZdSzN3hPFksQQZx616A6fGGN22zANpMW 💎►Donate Lisk 16883042352161362207L 💎►Donate IOTA SRZWULMJI9WJFVWDIVXXMVWHVVJAKMAXKMFOINQGEZXNJYLRSHPXBE9PHQDUVIRESEUZSYJBGGKLBMEYIJOKIOIXBU
Views: 21425 What The Func?
HOQU BLOCKCHAIN API
 
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The HOQU blockchain api is designed to interact with the HOQU platform smart contract in the Ethereum blockchain. The HOQU blockchain explorer is a web interface for reading data from the platform smart contract. We have also developed a tracker for leads, which can be seen at work in the given video. This case demonstrates how all the meta data of the lead falls into the blockchain. More information about HOQU at https://www.hoqu.io/ HOQU is the world's first decentralized blockchain affiliate marketing platform. Social channels: Facebook: https://www.facebook.com/HOQUio Twitter: https://twitter.com/HOQU_IO Telegram: https://t.me/hoquio Telegram (Rus): https://t.me/hoqu_rus Telegram Bounty: https://t.me/hoqubounty Blogs: Reddit: https://www.reddit.com/user/HOQU_IO/ Medium: https://blog.hoqu.io Bitcointalk: https://bitcointalk.org/index.php?topic=2254411 Bounty: https://bitcointalk.org/index.php?topic=2255775 Steemit: https://steemit.com/@hoqu Golos: https://golos.io/@goloshoqu
Views: 1283 hoqu.io
Use Golang to Connect to Ethereum | Blockchain
 
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In this video we use Golang rather than the more popular Javascript to connect to an Ethereum node. Source code: https://gist.github.com/ezynda3/551155e9b6447224d9ff2431c1f57488 Check out my other videos and articles http://edzynda.com Follow me on Steemit https://steemit.com/@edzynda 💎►Donate Ether and Ethereum-Based (ERC-20) Tokens 0x146cfed833cc926b16b0da9257e8a281c2add9f3 💎►Donate Bitcoin 1KyZbSeeCWgmeRrUQTTbb3meJEyPCGy3zd 💎►Donate Dash XoZdSzN3hPFksQQZx616A6fGGN22zANpMW 💎►Donate Lisk 16883042352161362207L
Views: 2462 What The Func?
How To Send Ethereum Transactions
 
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How To Send Ethereum Transactions http:///www.Blockgeeks.com You can send transactions between any two accounts on Ethereum. Typically, these transactions occur in the production environment called the Mainnet but there’s also a few test networks available for us to use. Test networks are useful when you want to use Ethereum without having to pay real money. Some of the popular test nets today are Ropsten, Rinkeby and Kovan. Properly functioning test environments are a critical part of the DAPP development process. Ropsten, which is the main public network and uses proof of work has become prone to spammy transactions and slowness. In response to this, two separate community efforts led to the creation of new test nets, Rinkeby and Kovan. These networks require authenticating using your GitHub account and the transactions are validated using proof of authority meaning there are a small set of validators. Let’s try to send a transaction over the Rinkeby test net. We’ll use a Chrome plugin called MetaMask to connect to the network and make transactions. I highly recommend getting MetaMask since it makes interacting with the Ethereum blockchain extremely easy. First, we’ll change the network to Rinkeby to make sure we’re using test ether and not real ether. Let’s create two test accounts and label them. To get test ether into these accounts, we need to use a tool called a Faucet which is just a website where you enter your address and it sends you some test ether. Let’s copy the address for one of our accounts. When we click the buy button, we get redirected to the Faucet. Since we’re connected to Rinkeby, we need to use our GitHub credentials to get the test ether. To do this, go to gist.github.com, create a new Gist with a single line that contains the address you just copied and publish it. You then copy the Gist URL and paste it into the Faucet. In a few short moments, we can see that we have updated the balance in our account. The reason the balance took a few seconds to update is because we need to wait for the transaction to get mined on the Rinkeby network. Now, let’s move this test ether between our accounts. First, let’s copy the address of our receiving account. Then, we click the send button, paste the address, as well as the amount and hit submit. Once we submit the transaction, we’re provided a transaction hash which we can use to reference this transaction. If we use an Ethereum blockchain explorer like Etherscan, we can get more details about this transaction. Since we made the transaction on the Rinkeby network, we have to use rinkeby.etherscan.io and we can see that the transaction is still waiting to be mined. Once it is successfully mined, we’ll see a block number assigned to the transaction. We can then verify the updated account balances using MetaMask. To learn more about Ethereum, check out our online guides and courses at blockgeeks.com. Thanks for watching and see you next time.
Views: 4933 Blockgeeks
Ethereum Developer: Build A Decentralised Blockchain App
 
01:33:42
Ethereum Developer: Build A Decentralised Blockchain App, is the most comprehensive course on building a decentralised blockchain application anywhere on the web. This is an effective and practical course that will take you from zero knowledge on developing decentralised Blockchain apps, to become an active early adopter who can develop Ethereum based Blockchain apps. This course is designed for anyone who wants to become an early adopter of the emerging decentralised Blockchain apps market. So if you’ve heard about decentralised Blockchain apps but have yet to get involved, you’re in the right place to jump in. // TIMESTAMPS // 01:59 - Here Is The Ecosystem Ethereum Is Comprised Of DApps And DAOs 05:16 - Lets Discuss What Mist Is As Well As How It Works 06:09 - You Must Be Made Aware Of What Ether And Accounts Are 09:17 - Here’s How To Compile, Deploy And Instantiate Contracts 14:26 - Lets Get Started With Configuring, Running & Working With The Go Ethereum Client 26:18 - Lets Kick This Lecture Off With Explaining The DApp We’re Going To Create 28:48 - Here Are Contract Classes, Functions And Conditionals Explained 43:32 - We Must Now Cover Inheritance And Abstract Contracts 49:54 - You Must Understand Libraries So Lets Jump Into It 52:34 - Types, Arrays, Structs and Mappings Are Something You Must Understand 01:05:58 - Lets Now Jump Into Global Variables 01:09:01 - Learn More About How Debugging Works With Us Here 01:12:12 - Here’s Your Introduction And Setup Instructions For Ethereum IDE 01:20:00 - Here’s Your Introduction And Setup Instructions For Truffle 01:24:35 - Lets Now Show You The Communication between Contracts and Websites // FULL COURSE HERE // View: https://www.udemy.com/ethereum-developer/?couponCode=YOUTUBE10 // FREE BITCOIN WEBINAR // Join: http://bit.ly/2AR6v2v // CRYPTOCURRENCY & BLOCKCHAIN TUTORIALS // Sign-Up: https://www.b21block.com // FOLLOW ME ONLINE // Subscribe: https://youtube.com/c/RavinderDeolB21Block?sub_confirmation=1 Like: https://facebook.com/B21Block
Getting started on Ethereum for Go programmers - GopherCon SG 2017
 
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Speaker: Dave Appleton Learn how a Go programmer can get started with the hottest blockchain technology on the block with an easy tutorial that will demonstrate creating a simple smart contract and accessing it from a Go server as well as an Ethereum Wallet. Event Website: https://2017.gophercon.sg Produced by Engineers.SG
Views: 3852 Singapore Gophers
Java and the Blockchain
 
34:22
Speaker: Conor Svensson Conor is the author of the Ethereum Java and Android integration library web3j (https://www.github.com/web3j/web3j). In this talk, Conor provides an overview of blockchain, how the Ethereum blockchain works, and how you can deploy and interact with smart Contracts on Ethereum, all within Java, thanks to web3j. Recorded at Sydney JVM Community Meetup, November 2016 (https://www.meetup.com/Sydney-JVM-Community/events/235146647/)
Views: 42685 ANZ Coders
Using web3.js to interact with a deployed Ethereum smart contract
 
08:35
Brian walks you through writing your first lines of web3 JavaScript code in order to interact with the Ethereum smart contract we deployed to the blockchain in the previous video. web3 JS documentation: https://github.com/ethereum/web3.js/ For professional inquiries, contact http://web3devs.com/
Ultimate Intro to Ethereum Ðapp Development [Part 12] - Oracles and Oraclize
 
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Video Notes: https://gist.github.com/AlwaysBCoding/556a9a47f75c2950b3a3035197594230 This is Part 12 of a 24 part screencast series outlining everything you need to know in order to get started building Ðapps in Ethereum. The series covers creating an Ethereum development environment, how to use various Javascript libraries to interact with the Ethereum protocol, simple ways to send transactions to the main Ethereum network, how to write and test smart contracts, how to run your own Ethereum node, how to mine Ether, adventures into undergraduate computer science, and more. These videos were recorded in November 2016, so some of the information might be slightly dated. Crypto Donation Links: BTC: 1HewuvpGP1fwprdcg2yru5ss28tGCo4wg8 ETH: 0xC46CDe805aCC8e7507E53E36486C7D8600559d65 XMR: 42HvHqtwg2dcZqDfLZjK8Xc8LyFKN7i3XCipbVSFDJLVGsdUN5pT3e7LExz9QTaGzdGdrEohXzvkeFmdZK1MPGX92xqftUn
Views: 3892 Decypher Media
Building a Blockchain in Under 15 Minutes - Programmer explains
 
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I wanted to demonstrate that the concept of a blockchain that powers almost all of the modern cryptocurrencies is very simple at its core. Bitcoin, Ethereum, Litecoin etc all are based on this blockchain technology. Many people think that the blockchain is a complicated thing while at it's core its just a clever use case of hashes. Enjoy guys! CODE: https://github.com/ivan-liljeqvist/SimpleBlockchain JOIN MY EXCLUSIVE MAILING LIST FOR EVEN MORE BLOCKCHAIN KNOWLEDGE: http://eepurl.com/c0hyc9 ESSENTIAL CRYPTO RESOURCES Hardware wallets: ♥ TREZOR https://trezor.io ♥ LEDGER NANO S https://www.ledgerwallet.com/r/4607 To buy cryptocurrencies: ♥ Coinbase https://www.coinbase.com/join/529bab0ab08ded7080000019 JOIN SLACK COMMUNITY http://slack-invite-ivan-on-tech.herokuapp.com https://steemit.com/@ivanli
Views: 362795 Ivan on Tech
ESP8266 IoT device on Ethereum Blockchain OpenWrt MIPS Wifi Node
 
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Decentralized IoT. My take on embedded Ethereum, without using NodeJS. The video is long, but I show the very basics of how I put a simple IoT device onto the blockchain. I use ESP8266 ESP-01, DS18B20 temperature sensor, and WDR3600 MIPS router flashed with OpenWrt & cross-compiled Geth binary. I hope to see more microcontroller ethereum development soon. If you cross compile OpenWrt, you can set it to compile NodeJS also in menuconfig -Languages, but you have to use the "M" option so it compiles but is separate binary from your firmware image (else it makes the image too big for the ROM) Also, if you do run a geth node on an embedded device, using the lightkdf option when creating keys will allow quicker keystore unlock time. https://rinkeby.etherscan.io/address/0x513c67ef8dd393a423900aafcc78a6878e465ae5 https://github.com/gusgorman402/ESP8266_Geth https://ethereum.stackexchange.com/questions/29524/sign-raw-transcaction-offline-with-c-on-arduino
Views: 5773 Ethereum4NewBeenz
Inside Ethereum Transactions · Web3.js · #3 Ethereum Blockchain Development Crash Course
 
38:33
► SUBSCRIBE TO THIS CHANNEL ◄ For more videos on how to build decentralized applications on The Ethereum Blockchain: https://www.youtube.com/channel/UCY0xL8V6NzzFcwzHCgB8orQ?sub_confirmation=1 DOWNLOAD FREE VIDEO COURSES: http://www.dappuniversity.com/free-download How to Build Ethereum Dapp (Decentralized Application Development Tutorial) https://youtu.be/3681ZYbDSSk Donate Ether to the channel: 0x39C7BC5496f4eaaa1fF75d88E079C22f0519E7b9 Website: http://dappuniversity.com/ Follow me on Twitter (@DappUniversity): https://twitter.com/DappUniversity Email me: [email protected]
Views: 3300 Dapp University
Set up a private Ethereum node on Windows
 
36:20
This lesson is part of our "Become a Blockchain Developer with Ethereum and Solidity" online course on Udemy. Go to https://www.udemy.com/getting-started-with-ethereum-solidity-development/?couponCode=YOUTUBE to learn what to do with this node.
Views: 633 ChainSkills
Upload Files to Ethereum Blockchain with React JS · #3 IPFS Image Storage DApp Tutorial
 
30:10
► SUBSCRIBE TO THIS CHANNEL ◄ For more videos on how to build decentralized applications on The Ethereum Blockchain: https://www.youtube.com/channel/UCY0xL8V6NzzFcwzHCgB8orQ?sub_confirmation=1 DOWNLOAD FREE VIDEO COURSES: http://www.dappuniversity.com/free-download Project code: https://github.com/dappuniversity/ipfs_image_uploader How to Build Ethereum Dapp (Decentralized Application Development Tutorial) https://youtu.be/3681ZYbDSSk Donate Ether to the channel: 0x39C7BC5496f4eaaa1fF75d88E079C22f0519E7b9 Website: http://dappuniversity.com/ Follow me on Twitter (@DappUniversity): https://twitter.com/DappUniversity Email me: [email protected]
Views: 2344 Dapp University
Create Your Own Cryptocurrency On Ethereum 1 - ERC20 Tokens | Blockchain
 
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In this video, I show you just how easy it is to create your own custom token on the Ethereum blockchain. I also explain ERC20, the standard that most custom tokens follow. Remix - Solidity IDE - https://remix.ethereum.org Solidity Documentation - https://solidity.readthedocs.io/en/develop/ ERC20 Standard: https://github.com/ethereum/eips/issues/20 Check out my other videos and articles http://edzynda.com Follow me on Steemit https://steemit.com/@edzynda 💎►Donate Ether and Ethereum-Based (ERC-20) Tokens 0x146cfed833cc926b16b0da9257e8a281c2add9f3 💎►Donate Bitcoin 1KyZbSeeCWgmeRrUQTTbb3meJEyPCGy3zd 💎►Donate Dash XoZdSzN3hPFksQQZx616A6fGGN22zANpMW 💎►Donate Lisk 16883042352161362207L 💎►Donate IOTA SRZWULMJI9WJFVWDIVXXMVWHVVJAKMAXKMFOINQGEZXNJYLRSHPXBE9PHQDUVIRESEUZSYJBGGKLBMEYIJOKIOIXBU
Views: 109460 What The Func?
Ethereum Tutorial - JS Decentralized Apps with Ethereum
 
12:23
Learn more advanced front-end and full-stack development at: https://www.fullstackacademy.com Arnoldo Mora shows you the basic concepts to understand the Ethereum Blockchain ecosystem, its history and why this is a great moment to get started developing with it. You will be able to start using the basic tool set of the JS-Ethereum developer. Will go through a fully functional demo app with Node.js, TestRPC, Truffle and Web3.js in just 10 minutes. Clone, install, run and get started!
Views: 9304 Fullstack Academy
Infura Demo
 
09:40
Infura is an API provider of Ethereum Nodes that enables developers to bootstrap into the network. This presentation gives an insiders view into what is going on in the network.
Views: 604 ConsenSysMedia
Building a Ethereum Wallet API from Scratch!
 
25:18
In this video I will be building from scratch a Basic Application that will Generate a Ethereum Wallet Address using Infura API, Display the Data, and then Parse the data via JSON over to the MongoDB. The tools I am using in this video are: MacOS High Sierra, Atom (as my text editor), npm (node package manager), Robo T3 (as the UI for the MongoDB). Here is the link to my github page where the finished project code is posted: https://github.com/insideoutzombie/eth-wallet-gen Here is the link I referenced in the video at the 12:00 minute mark: https://youtu.be/9jactlRcFwM Find more blockchain development resources at: https://web3devs.com/training/ Please leave a like and subscribe as it really helps support us.
Views: 44 web3devs
How to upload 1000 ethereum addresses in blockchain smart contract
 
36:28
Github URL: https://github.com/rstormsf/1000_addresses_tutorial_ethereum
Views: 418 Roman Storm
Learn Smart Contracts · Web3.js · #2 Ethereum Blockchain Development Crash Course
 
21:06
► SUBSCRIBE TO THIS CHANNEL ◄ For more videos on how to build decentralized applications on The Ethereum Blockchain: https://www.youtube.com/channel/UCY0xL8V6NzzFcwzHCgB8orQ?sub_confirmation=1 DOWNLOAD FREE VIDEO COURSES: http://www.dappuniversity.com/free-download How to Build Ethereum Dapp (Decentralized Application Development Tutorial) https://youtu.be/3681ZYbDSSk Donate Ether to the channel: 0x39C7BC5496f4eaaa1fF75d88E079C22f0519E7b9 Website: http://dappuniversity.com/ Follow me on Twitter (@DappUniversity): https://twitter.com/DappUniversity Email me: [email protected]
Views: 3988 Dapp University
How to be a Blockchain Developer | Programmer
 
03:10
In this tutorial Vlad Wulf explains what it is to be a blockchain developer.
Views: 22268 Vlad Wulf
Creating a blockchain with Javascript (Blockchain, part 1)
 
14:52
Learn how to write your own Blockchain with JavaScript. In this video I'll show you what is behind a blockchain by using simple code. It's not a complete implementation, but enough to understand how blockchains work and how they guarantee that blocks can never be changed. After creating our blockchain we'll try and tamper with it. This will demonstrate a blockchains ability to detect fraud. Next video (implementing proof-of-work): https://youtu.be/HneatE69814 💰 Want to buy Bitcoin or Ethereum? Buy for $100 and get $10 free (through my affiliate link): https://www.coinbase.com/join/59284524822a3d0b19e11134 ► Source code Available on GitHub: https://github.com/SavjeeTutorials/SavjeeCoin ► About me 🐦 Follow me on Twitter: https://twitter.com/savjee ✏️ Check out my blog: https://www.savjee.be ✉️ Subscribe to newsletter: https://goo.gl/nueDfz 👍🏻 Like my Facebook page: https://www.facebook.com/savjee
Smart Contract Events · Web3.js · #6 Ethereum Blockchain Development Crash Course
 
19:39
► SUBSCRIBE TO THIS CHANNEL ◄ For more videos on how to build decentralized applications on The Ethereum Blockchain: https://www.youtube.com/channel/UCY0xL8V6NzzFcwzHCgB8orQ?sub_confirmation=1 DOWNLOAD FREE VIDEO COURSES: http://www.dappuniversity.com/free-download How to Build Ethereum Dapp (Decentralized Application Development Tutorial) http://www.dappuniversity.com/articles/the-ultimate-ethereum-dapp-tutorial Donate Ether to the channel: 0x39C7BC5496f4eaaa1fF75d88E079C22f0519E7b9 Website: http://dappuniversity.com/ Follow me on Twitter (@DappUniversity): https://twitter.com/DappUniversity Email me: [email protected]
Views: 1452 Dapp University
What to learn before Solidity and programming Ethereum? Programmer explains.
 
04:09
What should you know before learning Solidity? What languages will give you a head start? https://steemit.com/@ivanli
Views: 26971 Ivan on Tech
Writing Smart Contracts · Web3.js · #5 Ethereum Blockchain Development Crash Course
 
23:24
► SUBSCRIBE TO THIS CHANNEL ◄ For more videos on how to build decentralized applications on The Ethereum Blockchain: https://www.youtube.com/channel/UCY0xL8V6NzzFcwzHCgB8orQ?sub_confirmation=1 DOWNLOAD FREE VIDEO COURSES: http://www.dappuniversity.com/free-download How to Build Ethereum Dapp (Decentralized Application Development Tutorial) https://youtu.be/3681ZYbDSSk Donate Ether to the channel: 0x39C7BC5496f4eaaa1fF75d88E079C22f0519E7b9 Website: http://dappuniversity.com/ Follow me on Twitter (@DappUniversity): https://twitter.com/DappUniversity Email me: [email protected]
Views: 1497 Dapp University
Ethereum contract Application Binary Interface
 
05:58
This video explains what an Ethereum contract Application Binary Interface is and what its purpose is. The acronym ABI stands for Application Binary Interface. A smart contract is stored as bytecode (= binary data) into the blockchain under a specific address also known as contract address. The ABI is needed to access the bytecode. The ABI defines which functions you can invoke as well as get a guarantee that the function will return data in the format you are expecting. If a web application wants to interact with a smart contract on the blockchain, it needs: - the contract address - the Application Binary Interface (ABI) Check out all my other Ethereum related tutorial videos: https://goo.gl/eNJVXe Subscribe to my YouTube channel: https://goo.gl/61NFzK The presentation used in this video tutorial can be found at: http://www.mobilefish.com/developer/blockchain/blockchain_quickguide_ethereum_related_tutorials.html The DemoContract.sol used in the video: http://www.mobilefish.com/download/ethereum/DemoContract.sol.txt To interact with the DemoContract.sol use the demonstration Ethereum Dapp: http://www.mobilefish.com/download/ethereum/DemoDapp.html More information about the Ethereum Application Binary Interface can be found at: https://github.com/ethereum/wiki/wiki/Ethereum-Contract-ABI #mobilefish #howto #ethereum
Views: 2215 Mobilefish.com
Ethereum Tutorial - Ethereum Explained | What is Ethereum? | Ethereum Explained Simply | Simplilearn
 
28:09
This Ethereum tutorial video will help you understand what is Ethereum, Ethereum features which includes cryptocurrency, smart contracts, Ethereum virtual machine, decentralized application, decentralized autonomous organization, applications of Ethereum and at the end you will see a demo on smart contract. Ethereum is a blockchain based distributed computing platform that enables developers to build and deploy their decentralized applications. Ether(ETH) is a cryptocurrency that runs on Ethereum network. It is used to pay for the computational resources and transaction fees on the Ethereum network. Ether can be utilized for building decentralized applications, smart contracts and making standard peer to peer payments. Now, lets deep dive into this video and understand what is Ethereum and how does it work. Below topics are explained in this Ethereum tutorial: 1. What is Ethereum? ( 00:33 ) 2. Ethereum features ( 01:03 ) - Cryptocurrency ( 01:35 ) - Smart contract ( 02:31 ) - Ethereum virtual machine ( 06:56 ) - Decentralized application ( 15:05 ) - Decentralized autonomous organization ( 17:15 ) 3. Applications of Ethereum ( 18:42 ) 4. Demo - Smart contract ( 05:54 ) Resources for the demo are provided below: 1. Install Ganache-CLI - https://github.com/trufflesuite/ganache/releases 2. Install Node - https://nodejs.org/en/download/ 3. Greeter File - https://github.com/simplilearn-github/greeter/blob/master/contracts/greeter.txt 4. Truffle Framework - https://truffleframework.com/docs/advanced/configuration To learn more about Blockchain, subscribe to our YouTube channel: https://www.youtube.com/user/Simplilearn?sub_confirmation=1 You can also go through the slides here: https://goo.gl/SeipLT Watch more videos on Blockchain: https://www.youtube.com/playlist?list=PLEiEAq2VkUUKmhU6SO2P73pTdMZnHOsDB #Whatisblockchain #Blockchain #Blockchaintutorial #Bitcoin #Blockchainonlinetraining #Blockchainforbeginners #BlockchainTechnology #Simplilearn Simplilearn’s Blockchain Certification Training has been designed for developers who want to decipher the global craze surrounding Blockchain, Bitcoin and cryptocurrencies. You’ll learn the core structure and technical mechanisms of Bitcoin, Ethereum, Hyperledger and Multichain Blockchain platforms, use the latest tools to build Blockchain applications, set up your own private Blockchain, deploy smart contracts on Ethereum and gain practical experience with real-world projects. Why learn Blockchain? Blockchain technology is the brainchild of Satoshi Nakamoto, which enables digital information to be distributed. A network of computing nodes makes up the Blockchain. Durability, robustness, success rate, transparency, incorruptibility are some of the enticing characteristics of Blockchain. By design, Blockchain is a decentralized technology which is used by a global network of the computer to manage Bitcoin transactions easily. Many new business applications will result in the usage of Blockchain such as Crowdfunding, smart contracts, supply chain auditing, Internet of Things(IoT), etc. This Blockchain Certification course offers a hands-on training covering relevant topics in cryptocurrency and the wider Blockchain space. From a technological standpoint, you will develop a strong grasp of core Blockchain platforms, understand what Bitcoin is and how it works, learn key vocabulary and concepts commonly used when discussing Blockchain and understand why engineers are motivated to create an app with Ethereum. Hands-on exercises and projects will give you practical experience in real-world Blockchain development scenarios. After completing this course, you will be able to: 1. Apply Bitcoin and Blockchain concepts in business situations 2. Build compelling Blockchain applications using the Ethereum Blockchain 3. Design, test and deploy secure Smart Contracts 4. Use the latest version of Ethereum development tools (Web3 v1.0) 5. Develop Hyperledger Blockchain applications using Composer Framework The Blockchain Certification Training Course is recommended for: 1. Developers 2. Technologists interested in learning Ethereum, Hyperledger and Blockchain 3. Technology architects wanting to expand their skills to Blockchain technology 4. Professionals curious to learn how Blockchain technology can change the way we do business Learn more at: https://www.simplilearn.com/blockchain-certification-training?utm_campaign=Ethereum-Tutorial-EYAwz0Jp1Og&utm_medium=Tutorials&utm_source=youtube For more updates on courses and tips follow us on: - Facebook: https://www.facebook.com/Simplilearn - Twitter: https://twitter.com/simplilearn - LinkedIn: https://www.linkedin.com/company/simplilearn - Website: https://www.simplilearn.com Get the Android app: http://bit.ly/1WlVo4u Get the iOS app: http://apple.co/1HIO5J0
Views: 2230 Simplilearn
Interacting with Geth   The Go implementation of Ethereum
 
23:44
In this tutorial, you will learn how to work with Geth and Mist in order to interact with Ethereum Blockchain. Related links: https://extremesetup.com/ https://github.com/ethereum/go-ethereum/wiki/Installing-Geth https://github.com/ethereum/go-ethereum/wiki/Managing-your-accounts https://ethereum.stackexchange.com/questions/10681/what-are-ipc-and-rpc https://www.rinkeby.io/#stats
Views: 559 ExtremeSetup
Set up a private Ethereum node on Linux
 
34:23
This lesson is part of our "Become a Blockchain Developer with Ethereum and Solidity" online course on Udemy. Go to https://www.udemy.com/getting-started-with-ethereum-solidity-development/?couponCode=YOUTUBE to learn what to do with this node.
Views: 427 ChainSkills
1. Deploy Smart Contracts Remix + Ropsten Ethereum Network
 
13:11
► SUBSCRIBE TO THIS CHANNEL ◄ For more videos on how to build decentralized applications on The Ethereum Blockchain: https://www.youtube.com/channel/UCY0xL8V6NzzFcwzHCgB8orQ?sub_confirmation=1 DOWNLOAD FREE VIDEO COURSES: http://www.dappuniversity.com/free-download The Ultimate Ethereum Dapp Tutorial http://www.dappuniversity.com/articles/the-ultimate-ethereum-dapp-tutorial
Views: 3878 Dapp University
Connect to Ethereum Blockchain with Truffle HD Wallet & Infura
 
15:23
► SUBSCRIBE TO THIS CHANNEL ◄ For more videos on how to build decentralized applications on The Ethereum Blockchain: https://www.youtube.com/channel/UCY0xL8V6NzzFcwzHCgB8orQ?sub_confirmation=1 DOWNLOAD FREE VIDEO COURSES: http://www.dappuniversity.com/free-download How to Build Ethereum Dapp (Decentralized Application Development Tutorial) https://youtu.be/3681ZYbDSSk Donate Ether to the channel: 0x39C7BC5496f4eaaa1fF75d88E079C22f0519E7b9 Website: http://dappuniversity.com/ Follow me on Twitter (@DappUniversity): https://twitter.com/DappUniversity Email me: [email protected]
Views: 678 Dapp University

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