Bitcoin OP_RETURN: Exploring Its Functionality and Use Cases

Bitcoin, a decentralized digital currency, uses a unique scripting system in its transactions to provide greater flexibility and security. One of the important script opcodes in this system is the OP_RETURN, which has provided an avenue for embedding data within the Bitcoin blockchain. πŸ‘‡πŸ’‘ The OP_RETURN is a script opcode that marks a transaction output … Read more

What is a zkEVM Rollup? A Simplified Guide to Ethereum’s Most Promising Scaling Solution

The exponential adoption of blockchain technology and smart contracts forces us to find new solutions to emerging scalability and efficiency challenges. One solution that has attracted attention in the Ethereum ecosystem is the zkEVM Rollup, a zero-knowledge (ZK) rollup designed to enhance the performance and security of smart contracts. Zero-knowledge rollup, or ZK-Rollup, is a … Read more

The Battle Between Centralization and Decentralization in Tech

Once upon a time, I was a distributed systems researcher specializing in graph partitioning algorithms. Those were thrilling days, though I must admit I didn’t enjoy the daily commute and the time away from my family. During that period, I delved deep into classic distributed systems conundrums like the Byzantine Generals Problem. When I discovered … Read more

How Bitcoin Solves the Byzantine Generals Problem

Overview 🏰 Picture a mighty city, surrounded by a bunch of Byzantine generals πŸ’‚β€β™‚οΈ, trying to unite and plan an epic attack! But oh no! 😱 Some of these generals might be traitors πŸ•΅οΈ, who’ll backstab the others and ruin the plan. They need a foolproof way to agree on a battle strategy while handling … Read more

$821,000 Ethereum Value per Solidity Developer

Ethereum’s Total Value Locked (TVL) is $28,000,000,000 USD and Ethereum’s market cap is $193,000,000,000 USD. Based on my estimations below, there are at most 269,000 monthly active Solidity developers. Therefore, the Ethereum TVL per Solidity developer is more than $104,000, and the Ethereum market cap per Solidity developer is more than $717,000. So for all … Read more

I Created a React Decentralized App to Sell eBooks – Here’s How (4/4)

We completed a transaction in the last part, but the transaction data had yet to be seen. In this part, we will drive the smart contract data to the user interface. The user’s data and the transaction time will be displayed on the user interface. This is part 4 of our four-tutorial series on creating … Read more

I Created a React Decentralized App to Sell eBooks – Here’s How (3/4)

This is part 3 of our four-tutorial series on creating a decentralized web app to sell ebooks: πŸ‘‡ We will connect the front end with the smart contract in this part of the series. The interaction with the smart contract will be done using ether.js. Move to the app.js file inside the source folder. We … Read more