--- title: "Janhavi Sonurkar (@Janhavi31) | Hashnode" description: "Janhavi Sonurkar (@Janhavi31) writes on Hashnode. Read their latest articles and follow their work." url: "https://hashnode.com/@Janhavi31" --- @Janhavi31 # Janhavi Sonurkar @Janhavi31 · Joined June 2025 ### [Complete Guide: Building a Drug Authentication dApp on Rootstock](https://rootstock.hashnode.dev/complete-guide-building-a-drug-authentication-dapp-on-rootstock?utm_source=hashnode&utm_medium=feed) Create a Rootstock-based dApp for drug authentication using Solidity and Next.js to fight counterfeit medicine through blockchain technology 25 min read · [rootstock.hashnode.dev](https://rootstock.hashnode.dev/complete-guide-building-a-drug-authentication-dapp-on-rootstock?utm_source=hashnode&utm_medium=feed) [Jan 9](https://hashnode.com/posts/complete-guide-building-a-drug-authentication-dapp-on-rootstock/6960ede54a5c1801a0526bc0) ### [Building a Verifiable Academic Credentials DApp using Rootstock Attestation Service (RAS)](https://rootstock.hashnode.dev/building-a-verifiable-academic-credentials-dapp-using-rootstock-attestation-service-ras?utm_source=hashnode&utm_medium=feed) Build a verifiable academic credentials DApp with Rootstock Attestation Service for secure, transparent, on-chain record verification 21 min read · [rootstock.hashnode.dev](https://rootstock.hashnode.dev/building-a-verifiable-academic-credentials-dapp-using-rootstock-attestation-service-ras?utm_source=hashnode&utm_medium=feed) [Jan 2](https://hashnode.com/posts/building-a-verifiable-academic-credentials-dapp-using-rootstock-attestation-service-ras/6957b360c8e6ff30e7d70649) ### [Complete Guide: Building a Drug Authentication dApp on Rootstock](https://how-layer-2-works-on-ethereum.hashnode.dev/complete-guide-building-a-drug-authentication-dapp-on-rootstock?utm_source=hashnode&utm_medium=feed) Hello builders! Welcome to this comprehensive guide where we'll build RootPharma - a decentralized drug authentication system that combats counterfeit medicine using blockchain technology. This tutorial will walk you through creating a complete full-... 23 min read · [how-layer-2-works-on-ethereum.hashnode.dev](https://how-layer-2-works-on-ethereum.hashnode.dev/complete-guide-building-a-drug-authentication-dapp-on-rootstock?utm_source=hashnode&utm_medium=feed) [Nov 13, 2025](https://hashnode.com/posts/complete-guide-building-a-drug-authentication-dapp-on-rootstock/6915c68fc949d0bddff71a08) ### [Building a Verifiable Academic Credentials DApp using Rootstock Attestation Service (RAS)](https://how-layer-2-works-on-ethereum.hashnode.dev/building-a-verifiable-academic-credentials-dapp-using-rootstock-attestation-service-ras?utm_source=hashnode&utm_medium=feed) Hi builders, welcome to this in-depth tutorial where we’ll explore how to build a Verifiable Academic Credentials DApp using the Rootstock Attestation Service (RAS). Rootstock (RSK) is a Bitcoin sidechain that merges Bitcoin’s robust security with Et... 21 min read · [how-layer-2-works-on-ethereum.hashnode.dev](https://how-layer-2-works-on-ethereum.hashnode.dev/building-a-verifiable-academic-credentials-dapp-using-rootstock-attestation-service-ras?utm_source=hashnode&utm_medium=feed) [Nov 13, 2025](https://hashnode.com/posts/building-a-verifiable-academic-credentials-dapp-using-rootstock-attestation-service-ras/6915a7528351ce1c07587a8e) ### [Why Layer 2 is the Future of Ethereum: Optimism, Arbitrum, and Polygon zkEVM Explained](https://how-layer-2-works-on-ethereum.hashnode.dev/layer-2-future-of-ethereum-optimism-arbitrum-and-polygon-zkevm?utm_source=hashnode&utm_medium=feed) Ethereum has become the world’s most popular smart contract platform, powering thousands of decentralized applications across finance, art, gaming, and more. However, as more users join, Ethereum struggles with network congestion and high transaction... 7 min read · [how-layer-2-works-on-ethereum.hashnode.dev](https://how-layer-2-works-on-ethereum.hashnode.dev/layer-2-future-of-ethereum-optimism-arbitrum-and-polygon-zkevm?utm_source=hashnode&utm_medium=feed) [Jun 27, 2025](https://hashnode.com/posts/layer-2-future-of-ethereum-optimism-arbitrum-and-polygon-zkevm/686017005f6cc2cf5cb1c88f)