The Linux Foundation’s Decentralized Trust (LFDT) mentorship program is back in 2025 with two exciting opportunities for developers passionate about Ethereum, Android, and the Java Virtual Machine (JVM). Whether you’re a seasoned blockchain developer or an Android enthusiast eager to dive into Web3, these mentorships offer a unique

November 2024 - April 2025 This report summarizes the activities and accomplishments of Web3j, an LF Decentralized Trust project, from November 2024 to April 2025. During this period, the project made significant strides in improving the framework’s functionality, enhancing user engagement, and bolstering overall community interaction.  Key highlights include

On December 5th, we held our very first Hyperledger Web3j Summit, bringing together a vibrant cross-section of the community—from seasoned contributors and enterprise users to new enthusiasts curious about integrating Ethereum functionality into their Java and Android applications. As a maintainer of Hyperledger Web3j, an LF Decentralized Trust project,

In the world of digital security, protecting sensitive data with robust encryption is essential. AWS Key Management Service (KMS) plays a crucial role in this space. It serves as a highly secure, fully managed service for creating and controlling cryptographic keys. What many may not realize is that AWS KMS

In Solidity, dynamic structs are complex data types that can store multiple elements of varying sizes, such as arrays, mappings, or other structs. The system encodes these dynamic structs into binary format using Ethereum's ABI (Application Binary Interface) encoding rules. The system encodes the structs whenever it stores

Last month, I published an article highlighting how developers can significantly reduce gas costs by choosing the right storage types in their Solidity smart contracts. This topic garnered considerable interest, underscoring the ongoing developer quest for more gas-efficient contract operations. As the popularity of Ethereum Virtual Machine (EVM) networks continues

In recent years, Ethereum Virtual Machine (EVM) networks have gained significant traction. Every day, a growing number of new users join these networks, engaging in numerous transactions. However, this increased activity leads to rising transaction fees, sparking interest in reducing these fees to make Web3 apps more affordable and user-friendly.

In today's landscape, the momentum behind Web3 is clear across various industries. As we move into this new era, it's important to update our tools and methods to match the changing environment. During Web1, one of the key changes involved using authentication methods to verify users

The capability to sign messages off chain with Web3j has been possible since 2017. Over time, improvements have been made to support basic string messages but also some more complex structured messages. In this post, we will focus on signing basic unstructured data. To implement the Ethereum sign off chain: