Hi, I'm Christoph Michel 👋

I'm a , , and .

I mostly do and help small to mid-sized teams from all over the world 🌎 on both short and long-term projects on an independent contractor basis.

I strive for efficiency ⏱️ and therefore track many aspects of my life.

Latest Articles

  1. Progress Report - March 2021

    I post a progress report showing what I did and how my products performed each month. Last month’s report can be seen here. What did I do Hours worked on side-projects in March I worked 71 productive on side projects hours last month. To make these progress reports a bit more…

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  2. Replaying Ethereum Hacks - Sushiswap BadgerDAO's Digg

    In this part of the Replaying Ethereum Hacks series, we will look at a vulnerability that is common among yield aggregators. Many of these protocols disclose a function to automatically convert the profits to a different token by trading on a decentralized exchange like Uniswap…

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  3. Progress Report - February 2021

    I post a progress report showing what I did and how my products performed each month. Last month’s report can be seen here. What did I do Hours worked on side-projects in February I worked 104 productive on side projects hours last month. To make these progress reports a bit…

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  4. Replaying Ethereum Hacks - Furucombo

    Furucombo has been exploited yesterday for ~15M USD. Attacker Address Exploit Setup Transaction Let’s dive into the attack, understand it by reading the code of the relevant contracts, and then replay the hack using a custom contract. Background Furucombo lets users build custom…

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  5. Replaying Ethereum Hacks - Introduction

    This is the start of a new series called “Replaying Ethereum Hacks” where we take a closer look at past Ethereum exploits and end up re-implementing the attacks. One might ask themselves what the benefits of doing this might be - especially as the hacks are already documented…

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  6. Paradigm CTF 2021 Solutions

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  7. Progress Report - January 2021

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  8. DeFi Sandwich Attacks

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  9. Capture The Ether Solutions

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  10. Ethernaut Solutions

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  11. Damn Vulnerable DeFi Solutions

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  12. Goals 2021

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  13. Progress Report - December 2020

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  14. Pricing LP tokens | Warp Finance hack

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  15. Progress Report - November 2020

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  16. Progress Report - October 2020

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  17. How I gamed EOS Defi projects and still got rekt

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  18. Progress Report - September 2020

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  19. How to install an old package version with brew

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  20. Fixing C++ compilation bugs for the MacOS Catalina upgrade

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  21. Progress Report - August 2020

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  22. Progress Report - July 2020

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  23. Obfuscating EOSIO smart contracts

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  24. Progress Report - June 2020

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  25. Progress Report - May 2020

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  26. Typing transformations in TypeScript

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  27. Progress Report - April 2020

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  28. 8 EOSIO WASM intrinsics you might not have heard about

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  29. EOSIO C++ IntelliSense in VSCode

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  30. Implementing efficient Dividend tokens

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  31. Testing EOSIO smart contracts with Hydra

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  32. Progress Report - March 2020

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  33. Progress Report - February 2020

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  34. How to check if an EOS account has a smart contract

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  35. Launching EOS Token Portfolio

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  36. How to deploy a create-react-app with github-actions

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  37. Progress Report - January 2020

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  38. How to rollback to an older EOSIO.CDT version with brew

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  39. Goals 2020

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  40. Progress Report - December 2019

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  41. De-anonymizing eosblender.com

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  42. EOSIO - How to pay for users' CPU

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  43. EOSIO Dev Puzzle - What's the max amount of RAM that can possibly be consumed by storing a single uint64

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  44. Progress Report - November 2019

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  45. Earn on your unused CPU and help the EOS network!

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  46. Progress Report - October 2019

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  47. Progress Report - September 2019

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  48. What really happened during the EOSPlay hack

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  49. Progress Report - August 2019

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  50. Progress Report - July 2019

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  51. How to fetch any secondary EOSIO table index using eosjs

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  52. Progress Report - June 2019

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  53. Advanced EOSIO programming concepts

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  54. Progress Report - May 2019

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  55. How EOS code and ABI hashes are computed

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  56. Progress Report - April 2019

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  57. Blog redesign with Gatsby and TailwindCSS

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  58. Progress Report - March 2019

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  59. How to create beautiful epub programming ebooks

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  60. Progress Report - February 2019

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  61. Progress Report - January 2019

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  62. How to write pandoc plugins in Nodejs

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  63. Goals for 2019

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  64. Progress Report - December 2018

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  65. Deferred Transactions on EOS

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  66. Difference Boolean Constructor and Double Negation

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  67. Progress Report - November 2018

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  68. Deploying EOS contracts using EOS.js

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  69. Progress Report - October 2018 - No more mobile apps 😬

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  70. EOS 1.3 Contract Development Toolkit Updates

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  71. C++ Guide for EOS Development - Header files

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  72. C++ Guide for EOS Development - Multi-Index Container

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  73. Progress Report - September 2018

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  74. C++ Guide for EOS Development - Iterators & Lambda Expressions

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  75. C++ Guide for EOS Development - Templates

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  76. C++ Guide for EOS Development - Classes and Structs

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  77. Progress Report - August 2018

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  78. C++ Guide for EOS Development - Call by value / reference

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  79. C++ Guide for EOS Development - Basics

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  80. Learnings from building my first dapp on EOS blockchain

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  81. Progress Report - July 2018

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  82. Introducing King of EOS 🥁

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  83. Bugs in V8's Exponentiation Operator

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  84. Progress Report - June 2018

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  85. Building a landing page in Vue.js

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  86. React just got ugly - React 16.4 Update

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  87. Progress Report - May 2018

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  88. Async / Await - Return values

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  89. React - Fun with keys

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  90. Progress Report - April 2018

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  91. You might not need React Context

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  92. Importing Blender 3D Model with Texture to Three.js

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  93. Progress Report - March 2018

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  94. Lazy-loading images with React and Semantic UI

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  95. Thoughts on making EOS development easier

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  96. Progress Report - February 2018

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  97. How to access Google Spreadsheets with Node

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  98. Differences in Defining ES6 Class Methods

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  99. Creating a Remind-Me bot for Steem

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  100. Progress Report - January 2018

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  101. Splitting your app into micro-processes

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  102. Book Review - Attack of the 50 Foot Blockchain

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  103. How does Steem work, anyway?

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  104. Goals for 2018

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  105. Progress Report - December 2017

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  106. How to cross-post to Steem

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  107. How to cross-post to Medium

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  108. Progress Report - November 2017

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  109. Released my fifth React Native app

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  110. Trying DynamoDB for the first time

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  111. Progress Report - October 2017

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  112. Progress Report - September 2017

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  113. Headless Chrome in Node.js

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  114. Progress Report - August 2017

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  115. Progress Report - July 2017

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  116. React Native CodePush Cheat Sheet

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  117. Progress Report - June 2017

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  118. Progress Report - May 2017

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  119. Lightweight Progress Circles in React Native

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  120. Progress Report - April 2017

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  121. Book Summary - Clean Code

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  122. Progress Report - March 2017

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  123. Getting Song Lyrics in Node.js

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  124. Creating Dynamic Promise chains

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  125. Progress Report - February 2017

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  126. Google Drive in React Native

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  127. JavaScript void Keyword

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  128. Progress Report - January 2017

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  129. How to use D3.js in React

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  130. Playing around with Relay and GraphQL

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  131. Book Summary - Heard On The Street - Quantitative Questions from Wall Street Job Interviews

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  132. Creating Google AdSense Reports with Express

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  133. Progress Report - December 2016

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  134. Book Summary - On Writing Well

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  135. How is async/await transpiled to ES5

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  136. How are generators transpiled to ES5

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  137. Released my fourth React Native app

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  138. Styling TimePickerAndroid in React Native

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  139. Structuring Redux Selectors

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  140. How to set appParams in React-Native

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  141. Progress Report - November 2016

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  142. Book Summary - Team Geek

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  143. How to create a React Native Android Library

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  144. Ultimate Guide to non-working CSS margins

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  145. How to use React in Markdown

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  146. How to migrate from Wordpress to Phenomic

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  147. Moving from WordPress to a Static Site Generator

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  148. Publishing React Native App on Android

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  149. What I learned from building my first React Native App

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  150. Set React Native App Icon When Minimized

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  151. Charts in React Native with React-Native-SVG and D3.js

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  152. How to add Permissions in React Native

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  153. How to Get The Size of a React Native View Dynamically

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  154. Performance Optimizations in Redux' mapStateToProps

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  155. How to create a Pull Request on GitHub

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  156. Why you should not use mapStateToProps too often

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  157. Modifying a Leaf of the Redux State Tree

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  158. Styling DatePickerAndroid in React Native

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  159. How to create a More-Popup Menu in React-Native

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  160. Better JS Logger for Debugging

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  161. Limitations of the react-native JS engine

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  162. Enumerating a Grid in Spiral Order

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  163. Using Actions in Redux the Correct Way

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  164. Drawing Fractals with L-Systems in D3.js

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  165. Moving Wordpress to a different domain

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  166. Javascript ES6 + Babel.js + Grunt with Sublime Text

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  167. Howto Raytracer: Ray / Triangle Intersection Theory

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  168. Howto Raytracer: Ray / Plane Intersection Theory

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  169. Howto Raytracer: Ray / Sphere Intersection Theory

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  170. Creating seamless textures the easy way

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  171. Understanding front faces - winding order and normals

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