In January Limit Break released Version 1.0 of our creator-friendly programmable royalty solution. In our first article on the topic, Introducing: Opt-In Programmable Royalties (and more) Through Staking, we covered a lot of ground, explaining the power and flexibility transfer whitelisting affords creators to innovate and push the NFT industry…

This article serves as a mini-course on smart contract security and provides an extensive list of the issues and vulnerabilities that tend to recur in Solidity smart contracts. A security issue in Solidity boils down to smart contracts not behaving the way they were intended to. …

Disclaimer: The content below is just for learning and have some key insights while using framework like React. While the inspiration is React, the idea is to deliver the core concepts of what it takes to build a library like React at its most basic level. In the first three…

A look behind the curtain at what servers like Next.js and Remix are doing for us — As part of my learning process I like to challenge myself to reverse engineer logic that seems to be doing “magic” or at least, acting as a black box when we’re using it. I’ve done it with the reactive behavior of React, and I’ve also done it with bundlers, now…

JavaScript does not natively have a decimal type, so it will natively handle all decimals as floating points. This will create floating point errors when manipulating the decimal. When dealing with financial transactions the values need to be exact. How do we get exact monetary amounts? We can utilize decimal.js…

Gas-saving is becoming less of a priority due to the rise of Rollup chains, like Zk-Rollup and Optimistic Rollups . However, I believe that gas optimization is still a valuable skill for developers, especially as AI models like ChatGPT become increasingly intelligent. I teach four levels of optimization. As the…

Update (4/11/23): Cortina will activate on the Avalanche Mainnet at 11 AM ET on Tuesday, April 25th. Cortina includes protocol optimizations that are not compatible with versions < v1.10.0. If you do not upgrade to AvalancheGo@v1.10.0 before the activation time, your node will be unable to process new blocks and…

Trustless Cross-Chain Information Access on Starknet — Introduction Storage proofs are a cryptographic way to track blockchain information so that it can be shared across chains. Similar to oracles, storage proofs provide proof that the information is true. However, unlike oracles, they do not require trust in a third party for this proof; rather, with storage proofs, the…

Introduction Changpeng Zhao, CEO of Binance, mentioned in one of his tweets that sending $200 via cryptocurrency would be significantly cheaper than transferring the same amount using standard payment methods. Unfortunately, cryptocurrency applications have lacked easy-to-use User Interface (UI) design along with a number of capabilities that online banking offers. …

Every blockchain has some state associated with it. That state can be thought of as a collection of key/value pairs. This state might represent something simple, like how many tokens each account has. The state might represent something more complicated like the code of a smart contract. No matter what…

Edit: updated for 2019! Ethereum’s October 15th 2017 hardfork introduced some cryptography precompiles, so now you can do more fancy privacy friendly things. However, it’s a bit tricky using precompiles if you don’t know how to call them, and get all of that low-gas-consuming goodness for yourself. So I’ll explain. inline assembly? The evm? Precompiles? Solidity??? …

A few days ago Multichain’s users were hacked by several attackers groups, all abusing the same vulnerability in Multichain (previously AnySwap) smart contract. The attackers were able to steal tokens valued at millions of US Dollars. Crypto Protocol Publicly Announces Flaw, Users Relentlessly Owned by Hackers The hack against users of Multichain is getting worse as a cybersecurity researcher calls the incident "the worst way…www.vice.com

Explaining Ethereum state trie to deepen knowledge of Ethereum blockchain. Introduction This article explains the Ethereum state trie. Ethereum is often called “world state machine” and uses original data storage to record states(accounts) and transactions. As state trie is a core database in Ethereum, it is important to understand it to…

According to the most recent developer report by Alchemy, the Web3 environment just reached more than 12.000 dApps running across all chains, and, along with that, the number of Smart Contracts verified has grown at least 160% YoY. …

Free stuff is always a good thing! Even if the web2 products are selling our data without our consent, we are comfortable in using them, because they won’t charge us. Almost every interaction with the dApp involves a transaction which seems pretty complicated and intimidating for beginners because it prompts…

What I wish I knew when I started writing Go — I started writing Go professionally in 2018. Here’s what I wish I could tell myself when I started. Go is pass-by-value Go is exclusively pass-by-value. That means each function receives a copy of the value of what you passed in. No exceptions. Sort of. You can pass pointers, too (you’re technically passing the…

The web needs a better business model — and we believe the technology is finally here to do it. — It’s become dangerously clear in the last few years that the business model we thought would support a vibrant, open web just isn’t going to work any more. …

Usage details and working principle — After a week of in-depth study, I thoroughly understood the working principle of Git-Rebase. Today, I am going to write a more in-depth analysis blog and share it with you. Understanding the Rebase command. The documentation for the git rebase command says “Reapply commits on top of another base tip”, which literally means reapply…

We often hear about major attacks conducted against projects that have failed to get a smart contract audit. You know the story: headlines with eye-watering numbers, a once promising project now relegated to history, the usual narratives peddled about the ‘wild west’ of crypto. Yet for all that, there is…

One of the greatest features of the blockchain is that data are immutable. That means that nobody can change the content of any transaction without invalidating the whole blockchain. But unfortunately, there are several issues with this system: When you deploy your smart contract, you can’t change the code afterwards…