I hate computer science! I’ll spare you the traditional arguments for why you should study and practice what is considered “the fundamentals.” I know, the relationship between reversing a LinkedList and writing a secure and gas-efficient smart contract seems non-existent. You’ve probably never needed to implement an algorithm that runs in log(n) time in…

This article explains what happens at the bytecode level when a smart contract is constructed and how the constructor arguments are interpreted. Table of contents We discuss the following topics with visual examples: Introduction Init code - Payable constructor contract - Non-payable constructor contract Runtime code - Runtime code breakdown Constructor with parameters Introduction …

Generate Ethereum Address from Public Key An ethereum address is the last 20 bytes of the keccack256 of the public key. The public key algorithm is secp256k1, the same used in bitcoin. Because it is an elliptic curve algorithm, the public key is an (x, y) pair corresponds to a point on the elliptic curve. Generate the Elliptic Curve Public Key. The…

There is no shortcut to a high solidity programmer salary This might sound funny coming from a blockchain bootcamp, but it’s true. It’s not that you can’t improve your salary with blockchain. You absolutely can. But the problem is, it’s way harder than taking an online course and sticking a few projects on your GitHub. Think about it this way…

All industries have a tier list or implied ranking. It’s usually unspoken, but it’s a real thing that should inform your strategy for getting a job as a blockchain or smart contract engineer. At RareSkills, we get a lot of questions about how to get a blockchain job. But this…

(This story was originally published here) It’s hard to read news about developers and not get the impression there is a shortage of talent. Makes sense right? Companies wouldn’t pay someone $100,000 per year if they could easily fill the job role with someone cheaper. But there is no shortage…

Next cohort begins October 24, 2022 8am PST RareSkills is a bootcamp for experienced developers who want to grow through 1–1 technical coaching with industry leaders. Our current focus is teaching blockchain and smart contract development rigorously so engineers stand out when they apply for web3 jobs. Who this is for? People who are…

A very long list of security issues, best practices, and gas-saving tips — Introduction and Motivation While no checklist can cover every issue that comes up in a solidity code review, these are ones I’ve seen recurring in my code reviews or that arise out of unexpected quirks in Solidity or blockchain environments. To give credit where credit is due, I borrowed some recurring themes from…

Like most engineers, I default to a mode of thinking commonly considered “logical” and “rational.” For most of my life, it completely puzzled me how anyone can get through life any other way. It makes sense right? The billionaires my peers and I look up to, Warren Buffet, Jeff Bezos…