Broadcast Ethereum Events with Web3.js and PubNub

In this post, we’ll show you how to harness the power of to amplify Ethereum smart contract events. Using our global, realtime network APIs, we’ll intelligently update the crowd watching your decentralized application. PubNub What is Ethereum? Ethereum is a decentralized network for running smart contracts. Let’s say you’ve created your masterpiece, but you need a way to signal the execution of events to your constituency. An example of this would be a network of investors that are awaiting the opening of your Cryptotoken crowdsale. It’s time to use the megaphone to tell everyone that your crowdsale has opened, in realtime. blockchain DApp PubNub Web3.js Web3.js is the JavaScript framework for interfacing with blockchain smart contracts. Whether you have a Node.js app, or a web browser front end, web3.js has 2 core purposes: Trigger the execution of smart contract functions Listen to events (like ) that are signaled when a contract executes solidity events The Crowdsale Has Opened! Using the code we can write a Node.js app to listen for the Ethereum events and update all of our fans using PubNub. Crowdsalable Ethereum Token PubNub is a realtime, global, data delivery network. We can make sure that all of our crowdsale investors, who may be staring at a purchase webpage while holding their breath, see that the sale has opened in an instant. PubNub can be used to keep a massive load of users in-sync, send realtime updates, and also perform data enrichment. Supercharge Your Smart Contract Events An app that is listening to Ethereum events, that is also connected to PubNub, can trigger push notifications, send , send , and much more. Using , or , tremendous capability is added to mere Ethereum events. text messages emails Mobile Push PubNub Functions The uses PubNub Functions to collect user data with , classify a customer’s use case with a machine learning API, and then submit an enriched alert. All of this functionality is triggered by one PubNub message. In this similar use case, PubNub can make your smart contract events . Open Growth SDK Clearbit powerful Here is the Node.js script that will commit the publish to PubNub’s network, which guarantees delivery in under a quarter of a second to your millions of patient investors. You can check out the full GitHub Repo for this project. In order to get this example running, you need to input the path of the JSON file for your smart contract build in . Next paste in your , and finally your toward the bottom of the file. This code can be used in conjunction with the project mentioned earlier. line 4 PubNub API keys contract’s address Crowdsalabe Token This connector opens the doors for and to ensure that our constituency gets a text, email, push notification, and we can , all in an automated fashion. PubNub Functions Mobile Push Notifications post to a Twitter account Originally published at www.pubnub.com .