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All Journal Jiko (Jurnal Informatika dan komputer) AT-TAKLIM: Jurnal Pendidikan Multidisiplin
Cherry Piya Vagga
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Computer Science & IT Other

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Analisis Perbandingan Blockchain Publik Dan Privat: Keuntungan Dan Tantangan Dalam Sektor Bisnis Rico Wijaya Dewantoro; Celine Chrysia; Cherry Piya Vagga
AT-TAKLIM: Jurnal Pendidikan Multidisiplin Vol. 2 No. 4 (2025): At-Taklim: Jurnal Pendidikan Multidisiplin (Edisi April)
Publisher : PT. Hasba Edukasi Mandiri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.71282/at-taklim.v2i4.219

Abstract

Blockchain technology has emerged as a significant innovation across various business sectors, offering transparency, security, and operational efficiency. Blockchain is divided into two main categories public and private each with its own advantages and challenges. Public blockchains, such as Bitcoin and Ethereum, enable full decentralization, enhance transparency, and reduce the need for intermediaries. However, they often face scalability issues and high transaction costs. In contrast, private blockchains offer greater control over data and network access, making them more suitable for enterprises that require efficiency and regulatory compliance, though they come with a higher risk of centralization. This study employs the Systematic Literature Review (SLR) method to analyze and compare both types of blockchain in a business context. By reviewing 20 relevant scholarly publications, this research identifies key factors influencing blockchain adoption, including technological readiness, regulatory frameworks, and stakeholder awareness. The findings indicate that a hybrid model combining public and private blockchains is increasingly being adopted to optimize the benefits of both systems. This study is expected to serve as a reference for academics, practitioners, and policymakers in formulating optimal blockchain adoption strategies within the business sector. It also provides insights into the challenges of blockchain implementation and the potential for integration with other technologies in the future.
IMPLEMENTING SHA-256 IN BLOCKCHAIN FOR SECURE AND TRUSTED ONLINE TRANSACTIONS OF MSMEs Matthew Luis; Rico Wijaya Dewantoro; Andrian Reinaldo Crispin; Adya Zizwan Putra; Abdi Dharma; Celine Chrysia; Cherry Piya Vagga
JIKO (Jurnal Informatika dan Komputer) Vol 8 No 3 (2025)
Publisher : Program Studi Teknik Informatika Universitas Khairun

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33387/jiko.v8i3.10606

Abstract

The advancement of information technology has driven digital transformation in various sectors, including Micro, Small, and Medium Enterprises (MSMEs), which are vital to Indonesia's economy. However, local MSMEs still face challenges in online transactions, especially related to data security and low consumer trust. Issues like data manipulation, lack of transparency, and weak security systems hinder optimal digitalization. This study implements the SHA-256 cryptographic algorithm in a blockchain system to enhance security and trust in local MSMEs' online transactions. SHA-256 is chosen for its ability to produce unique, permanent, and tamper-resistant hashes. The system adopts a decentralized blockchain model, where transactions are recorded in encrypted, chronologically linked blocks. The testing results show that the SHA-256-based blockchain system functions effectively in maintaining data integrity and preventing manipulation. Black Box Testing confirmed that the system operates correctly from the user's perspective, including login validation, transaction recording, manipulation detection, and transaction history retrieval. White Box Testing validated the internal logic of the system, proving the correct implementation of SHA-256 hashing, block linking, Proof of Work (PoW), and transaction validation mechanisms. All test cases passed successfully, demonstrating that the system is stable, functional, and secure.
Co-Authors Abdi Dharma Adya Zizwan Putra Andrian Reinaldo Crispin Celine Chrysia Matthew Luis Rico Wijaya Dewantoro