Blockchain-Based Academic Record Management for Elementary Schools: A Prototype for Data Security and Validation

Abstract

Academic data storage in elementary schools remains highly dependent on conventional systems, which are prone to data manipulation, loss, and recording errors. These issues compromise the authenticity and traceability of student academic records. This research aims to develop a prototype application for storing academic data using blockchain technology, a decentralized data system that relies on cryptographic techniques and interconnected block structures to ensure data integrity. The method applied involves designing a web-based user interface, constructing a mechanism for storing data within sequential blocks, and implementing a verification feature through block hash tracking. Testing results show that the system can accurately record and store student academic data, while also enabling verification of every modification through a traceable chain structure. Any unauthorized changes are automatically detected, reinforcing the transparency and security of the stored data. The study concludes that blockchain can serve as an effective solution for managing academic records at the elementary school level by enhancing data reliability, reducing the risk of tampering, and supporting educational data management in a more secure digital environment.

Keywords: Blockchain; Academic Data; Elementary School; Data Security; Block Verification

INTISARI

Penyimpanan data akademik siswa pada jenjang Sekolah Dasar (SD) masih banyak menggunakan sistem konvensional yang rentan terhadap manipulasi, kehilangan data, serta kesalahan pencatatan. Permasalahan ini berdampak pada kurangnya kepercayaan terhadap keaslian dokumen akademik siswa. Tujuan dari penelitian ini adalah mengembangkan prototipe aplikasi penyimpanan data akademik berbasis teknologi blockchain, yaitu sistem penyimpanan data terdesentralisasi yang mengandalkan kriptografi dan struktur blok yang saling terhubung untuk menjamin integritas data. Metode yang digunakan meliputi perancangan antarmuka berbasis web, pengembangan fungsi penyimpanan data dalam blok berurutan, serta integrasi fitur verifikasi melalui hash blok. Hasil pengujian menunjukkan bahwa prototipe mampu mencatat dan menyimpan data siswa secara permanen serta memungkinkan pelacakan setiap perubahan secara transparan. Sistem yang dikembangkan juga mampu mendeteksi perubahan data yang tidak sah melalui mekanisme verifikasi rantai blok. Kesimpulan dari penelitian ini menunjukkan bahwa teknologi blockchain dapat diterapkan secara efektif sebagai solusi penyimpanan data akademik siswa SD, khususnya dalam meningkatkan keamanan dan transparansi data pendidikan dasar.

Kata Kunci: Blockchain, Data Akademik, Sekolah Dasar, Keamanan Data, Verifikasi Blok