Products made for the open web.
Siva Labs is where I build focused, open-source tools — small interfaces for wallets, smart contracts, infrastructure, and onchain data that make hard concepts tangible.
I'm Siva Bharathy, a software engineer and lead project manager at Sparkout Tech Solutions. I work across the full stack with a soft spot for backend architecture, blockchain, and clean developer experience — turning complex problems into simple, intuitive solutions.
This is the workshop; the writing and the full story live on my main site.
Selected Work · 4 Projects
Blockchain Demo
An interactive demonstration of core blockchain concepts — blocks, cryptographic hashing, and how a chained ledger stays tamper-evident when data changes.
View project ↗AES Encryption Toolkit
A browser-based tool for encrypting and decrypting text with the AES standard. Everything runs client-side, so keys and ciphertext never leave the page.
View project ↗Polymarket Demo
A prediction-market interface inspired by Polymarket for browsing markets, viewing odds, and exploring how event-based trading works.
View project ↗SQLite File Explorer
Load a SQLite database in the browser to browse tables and run queries, then export whole tables or query results to CSV — no install required.
View project ↗Recent Writing
What is an NFT and the ERC-721 Standard?
A guide to how NFTs represent digital ownership on-chain, and the ERC-721 standard that made them possible.
Listening to Web3 Contract Events with NestJS
Subscribing to Ethereum contract events with Web3.js inside a NestJS service lifecycle — cleanly.
Get in Touch
Have a question or a project in mind? I'd love to hear from you.