This post is the second of a two-part article discussing anti-spam in the Kin Blockchain. Here we will dive into the anti-spam design and implementation, following the research effort discussed in part 1. Kin Anti-Spam System The initial version of the implementation can be roughly described as follows: We prioritize transactions for digital…

Anti-spam is an important topic in the cryptocurrency industry. Over the past decade, we have witnessed numerous spam attacks on multiple popular blockchain networks. Extensive brainstorming and research are invested worldwide on how to implement transaction and account creation rate-limiting. …

I gave a presentation at Blockchain Academy TLV around August 2018 about the Stellar Blockchain, and told the story of Federated Byzantine Agreement (aka FBA) and the Stellar Consensus Protocol (aka SCP). Here’s what they wrote about the presentation in their blog: Last week we held our 7th Blockchain Academy…

The Kin Ecosystem needed a more predictable blockchain in terms of transaction confirmation time and fees, and Stellar was our winning candidate. Now, we’re using Kik’s nine years of experience and knowledge in network engineering and scaling to test the Stellar public blockchain network for Kin. …

Intro This article is the first of a series of posts on writing automated unit tests for mobile apps over Ethereum using testrpc and Truffle. Part I: Introduction (This post) Part II: iOS Part III: Android While working on Kin mobile SDKs we have stumbled upon a challenge regarding our CI…

Preface In our token distribution event, which was held in September, we issued 10 trillion KIN. As stated in our whitepaper (Chapter 6), 60% of these tokens (i.e., six trillion) will be under the purview of the Kin Foundation, locked under the Kin Rewards Engine schema (whose initial version we have…

This a blog post I wrote on my company’s tech blog (Rounds). Since then our company was acquired by Kik, and the blog has been somewhat hidden away. Nevertheless I put it here for documentation sake. Hey Rounders! I’m Ory, a Backend developer here at Rounds. Today I’d like to…

Use this when your Django development server just doesn’t cut, or when you’re too lazy to install an XAMPP stack. I wrote this server when I started working with HTML5 <video> tag. I found out that Django’s dev server [doesn’t support byte-range downloads][quesiton] (for progressive downloads and such). …

Full Disclosure: Though I have not been a Mac user for several years now, and have since moved to Arch Linux (that’s right), I keep this small helpful article for the benefit of the public. Most packages have other packages they depend upon to work properly. However, uninstalling a package…