Web3 is an umbrella term for a new wave of applications that rely on decentralized technologies and the Blockchain. Since the inception of Ethereum, which brought the idea of executing code in the Blockchain, many new projects have emerged in this space to help developers implement decentralized applications. …

Merkle Trees have become more popular than ever in the last decade for their heavy use in the crypto world. Most Blockchain implementations rely on this data structure for validating transactions as part of the consensus protocols. What is a Merkle tree exactly? It’s a data structure usually represented by…

My last article 101 Smart Contracts and Decentralized Apps in Ethereum discussed all the introductory concepts for developing Smart Contracts and Decentralized Applications in Ethreum. This article is focused on implementing a concrete sample that includes Smart Contracts and a Decentralized Application (DApp) written with Next.js. The smart contracts in…

Mobile applications implemented these days for a single native platform such as iOS or Android, or multiple platforms with frameworks like Xamarin, React Native or Flutter, all share the same minimum authentication requirements, which include authenticating users, and also passing authentication data in the form of tokens to external web…

Auth0 offers two alternatives for implementing authorization in an API, scopes, and roles. Scopes represent access levels that an API exposes and users can grant to client applications on his/her behalf. …

If you already got a chance to review how smart contracts work in a Blockchain like Ethereum, you would understand they run in an isolated fashion. …