DOI: 10.11118/ecos2026_023

PRACTICAL BLOCKCHAIN DEPLOYMENT FOR TICKET MANAGEMENT: A CASE STUDY WITH SOLIDITY SMART CONTRACTS

Jan Mrákava¹, Radim Farana²

¹ Department of Economics, Faculty of Business and Economics, Mendel University in Brno, Zemědělská 1, 613 00 Brno, Czech Republic$1

² Department of Informatics, Faculty of Business and Economics, Mendel University in Brno, Zemědělská 1, 613 00 Brno, Czech Republic$2

This article deals with the design and implementation of a web application for ticket management based on a local Ethereum-compatible blockchain. The work responds to the gap between marketing claims about blockchain as a universal document verification tool and limited knowledge of real transaction costs. The frontend uses React.js, the backend Node.js with Express and MongoDB, and the logic consists of two Solidity 0.8.10 smart contracts (EventContract, TicketContract) deployed through Truffle into the Ganache environment (Chain ID 1337). Measurements showed that creating a single event with a typical description costs 0.0078 ETH (~546 CZK at the 2024 exchange rate), while ticket purchase and resale require an order of magnitude lower fees. The main finding: transaction cost is dominated by the length of text strings, which for document verification in general means storing only hashes and short identifiers on the chain.

Keywords: blockchain, Ethereum, smart contracts, Solidity, document verification, gas cost

pages: 226-231, online: 2026