In the era of Industry 4.0, where automation, traceability, and secure data flows are foundational to modern industrial ecosystems, blockchain technology has emerged as a powerful tool to ensure transparency, auditability, and resistance to tampering. By offering an immutable ledger of transactions or events, blockchains are increasingly adopted in manufacturing, logistics, healthcare, and energy sectors to track critical operations and ensure trust among stakeholders. However, the integrity of any blockchain-based system critically depends on the quality of the data it ingests. If the data recorded is predictable, manipulated, or inserted without sufficient entropy or verification, the immutability of the blockchain becomes moot. This paper introduces a proof-of-concept framework that integrates Quantum Random Number Generation (QRNG) and smart contract-based logging on Ethereum to strengthen the cryptographic robustness of industrial event recording. Each event is timestamped, tagged with a quantum-generated number, described via metadata, and hashed using SHA-256 to produce a unique fingerprint. The hash is then immutably stored on a local Ethereum blockchain. The system demonstrates a fusion of quantum physical entropy and decentralized blockchain trust.