JavaScript Night #1

Apr 10, 2018 · New York, United States of America

Breaking down Bitcoin with JavaScript – Tom Goldenberg

Tom is a returning speaker who specializes in building web and financial services applications with JavaScript. Here, he'll show us how to reimplement Bitcoin from scratch, using NodeJS.

We'll learn:

1. What a blockchain is from a detailed technical standpoint,

2. How the Bitcoin network is implemented, and

3. How to reverse-engineer the Bitcoin blockchain to implement it in NodeJS

Tom Goldenberg is an entrepreneur and software engineer. He was co-founder of the investment app Commandiv. Follow him on Twitter at @tomgoldenberg (

Forget the Password! – Alim S. Gafar

Today, it isn't uncommon for users to have accounts on several hundred online services on the internet. Many website and apps use some form of usernames/password combination to authenticate users. To make it easier to remember how to access these accounts, some users recycle the same usernames and passwords. There are several options to address this problem, and passwordless authentication is a relatively recent addition, used by sites such as Zeit (, FirstBuild (, Square Cash (, and Medium ( (if using the email option). In this talk, cover:

1. What is passwordless authentication and how it fits in with other common authentication schemes,

2. The pros and cons of passwordless authentication, and

3. How to implement a simple passwordless system in JavaScript.

Alim S. Gafar is a principal at DIRA Market Dynamics, a market discovery and development company. He is a JavaScript enthusiast and technical evangelist, interested in the intersection of mobile, ML, blockchain, and speech. Follow him on Twitter at @alimgafar (

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Event organizers
  • ApolloMeteorNYC

    Meet other developers using Meteor. Share your knowledge, apps, and get feedback from others. Meteor is an open-source platform for building top-quality web apps in a fraction of the time, whether you're an expert developer or just getting started.  We currently run three (3) different Meetup events: DevShop, Hack Night, and weekend Office Hours.  DevShop is our MDG-supported speaker series, where members with varying degrees of JavaScript, Apollo/GraphQL, and Meteor experience prepare and give talks that

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