PassBook: Event Tickets With Clear Ownership on Solana
Digital tickets are easy to fake and hard to prove
A ticket on a phone is just data. Anyone who can take a screenshot can show it as real. The organizer, meanwhile, has trouble proving that they issued the ticket and who holds it now.
PassBook was built to answer two questions: who owns the ticket, and whether it has been altered. The project's README describes it as an event ticketing and NFT marketplace, where ownership is recorded on the Solana blockchain.
A familiar sign-in, ownership on-chain
Users sign in with Google, the same habit they already have from other apps. Ownership is recorded behind the scenes, on Solana. The app has a home screen with featured events, event discovery, a marketplace for buying and selling tickets, and a profile where users see their assets.
Ticket images and details are stored on IPFS through NFT.Storage, so the app only keeps a link to that content. This way the ticket content does not depend on a single server.
Running on mainnet
PassBook did not stop at a test build. The app runs on Solana mainnet. I planned it, designed its features, and wrote both the frontend and the backend myself. The repository records 44 commits, from August 2023 to October 2026.
Tech Stack
Solana
React
Firebase