Mathemagic: Full Multiply in Solidity

How to do multiplication with full 512 bit result in Ethereum…

Basic Contracts: Owned & Terminable

I like to keep smart contracts small and simple to help understanding and reviews. A couple contracts I have developed are useful for everyone. I’ll share them in this and later posts, so please follow!

Mathemagic: 512-bit Division in Solidity

In this post I will introduce five small tricks and use them…

Mathemagic: Chinese Remainder Theorem

A lot of smart contracts use the SafeMath library. It prevents contracts from having…

Optimizing transaction settlement

Alice, Bob and their lexicographic friends traded extensively. All off-chain of course. They now…

Mathemagic: Multiplicative Inverses

In this post, I will show a trick to divide a large number using only a small multiplication by an inverse. I will show two ways of computing these inverses and how to build a small fast lookup table. In the process, we will see that a single instruction can…

Blockchain is more than FinTech

Blockchain and FinTech often go hand in hand. And for good reason! But there is more to blockchain than financial innovation. Let’s look at the non-FinTech opportunities on chain.

Blockchain fundraising platform

Design for the real-life user-facing dApp