Nurhajar Anugraha, Muhammad Riswanto, Lindawati Lindawati, Asrul Asrul
Penelitian ini bertujuan untuk mengembangkan sistem e-voting berbasis blockchain dengan autentikasi biometrik sidik jari serta penerapan protokol zero-knowledge proofs sebagai pengamanan tambahan terhadap data pemilih dan hasil suara. Permasalahan utama yang dihadapi dalam sistem pemungutan suara elektronik konvensional adalah rendahnya kepercayaan terhadap keamanan data dan potensi manipulasi hasil. Metode penelitian yang digunakan mencakup perancangan sistem dengan arsitektur client-server, implementasi teknologi blockchain untuk pencatatan suara yang terenkripsi, serta integrasi biometrik sidik jari menggunakan BiometricPrompt API pada Android. Selain itu, sistem diverifikasi dengan kode OTP melalui email institusional sebagai bentuk validasi ganda pengguna. Hasil pengujian menunjukkan bahwa sistem dapat berjalan dengan baik dan memberikan keamanan yang tinggi karena setiap data suara tersimpan secara permanen dan tidak dapat diubah di jaringan blockchain. Autentikasi biometrik juga memastikan bahwa setiap pemilih terverifikasi secara unik sehingga tidak terjadi pemungutan suara ganda. Dengan demikian, sistem e-voting ini dinilai layak diterapkan untuk lingkungan akademik dan dapat dikembangkan lebih lanjut untuk pemilihan umum berskala lebih besar.
Jimmy Jimmy, Kenny Rimba, Vincent Vincent, Ronsen Purba · 5 authors
E-voting systems are prone to challenges such as lack of transparency, risks of data manipulation, and dependence on centralized authorities, which can undermine trust in electoral processes. This research develops a blockchain-based e-voting system on the Polygon network, leveraging smart contracts and Zero-Knowledge Succinct Non-Interactive Argument of Knowledge (ZK-SNARK) to enhance security, transparency, and voter anonymity. The study employs an application development approach, implementing a structured methodology with initialization, registration, voting, and tallying phases. Smart contracts automate voter verification, vote casting, and result tabulation, while ZK-SNARK ensures voters can cast ballots anonymously without revealing their identities. The system’s transparency and immutability are tested using PolygonScan, demonstrating effective prevention of manipulations like double voting through cryptographic credentials (nullifier, commitment, and nullifier hash) and Merkle Tree structures. Results indicate that the system provides a secure, verifiable, and decentralized framework for elections. This implementation offers a robust foundation for future e-voting systems, promoting trust and integrity in digital voting processes.
Prof. Madhavi Bhosale, Abhishek Kangude, Vedant Khandare, Sunil Kajave
Abstract In recent years, advancements in blockchain technology have paved the way for creating transparent, secure, and decentralized digital ecosystems. This paper presents a blockchain-based electronic voting (e-voting) system designed to overcome the limitations of traditional and centralized electronic voting methods. The proposed system integrates Solidity-based smart contracts, a Python middleware API using Web3.py, and a Flutter frontend to create a secure, verifiable, and user-friendly voting platform. The architecture ensures voter anonymity, immutability of votes, and real-time result verification through blockchain’s decentralized ledger. The system employs MetaMask for voter authentication, enabling a one-person-one-vote mechanism and eliminating centralized control or tampering risks. Experimental simulations using Ganache demonstrate efficient transaction processing, transparent result computation, and tamper-proof data storage. The proposed solution enhances security, transparency, and trust in digital elections and serves as a foundation for scalable, real-world implementations in organizational, academic, and governmental voting scenarios. This research contributes toward developing next-generation decentralized voting infrastructures that reinforce democratic integrity and public confidence in electoral processes. · Keywords : Blockchain Technology; E-Voting System; Smart Contracts; Decentralized Applications (DApps); Solidity; Ethereum; Python Web3.py; Flutter Frontend; MetaMask Authentication; Digital Elections; Voter Privacy; Transparency; Immutability; Secure Voting; Electronic Governance
Shwetha K R, Divya G S, Bhavan Pande, Darshan K · 6 authors
Due to the ever-increasing demand to use safe and reliable electronic votes, a blockchain-based secure voting system has been developed to enhance transparency, trustfulness, and voter recognition. This system eliminates such issues as voting fraud, impersonation, and manipulating the results by means of biometric verification and decentralized blockchain ledger. The voters are matched to a facial-recognition database containing previously registered voters before voting. It is authenticated by a K-Nearest Neighbors (KNN) approach as it works well on classifying facial features and is not very laborious. After the vote is successfully authenticated, it is stored and signed on a blockchain network where it cannot be altered by another party. The features of smart contracts ensure the safety of voting, the correct counting of votes, and the awareness of each network node of what is happening. The cryptography of hashing and decentralized make certain that the votes are immutable, due to the decentralized structure of blockchain and consensus mechanisms. The face-matching module ensures that only the qualified individuals are allowed to vote. The system also supports mass elections and guarantees the ease of interaction among the voters. It was designed in such a way that it is scalable and user friendly. Trust, security, and efficiency are enhanced in the system through biometrical authentication, distributed ledger technology, encryption, and classification through machine-learning. It is highly dependable in how to conduct the current digital elections.
Dini Rohmayani, Ilham Alfath, Castaka Agus Sugianto
Abstrak - Implementasi Non-Fungible Token (NFT) sering menghadapi masalah permanensi data karena ketergantungan pada penyimpanan terpusat yang rentan terhadap penghapusan dan perubahan. Penelitian ini mengembangkan aplikasi web berbasis Decentralized Application (DApp) untuk pembuatan Non-Fungible Token (NFT) yang mengintegrasikan InterPlanetary File System (IPFS) dengan Smart Contract ERC-721 pada blockchain Ethereum. Metode pengembangan menggunakan pendekatan waterfall dengan implementasi React.js dan Next.js untuk frontend serta Solidity untuk smart contract. Sistem dirancang dengan arsitektur three-tier yang memfasilitasi pembuatan koleksi Non-Fungible Token (NFT) melalui kontrak Factory dan pengelolaan token melalui NFTCollection, dengan metadata dan aset digital disimpan menggunakan Content Identifier (CID) pada InterPlanetary File System (IPFS). Pengujian blackbox menunjukkan seluruh fungsi sistem berjalan sesuai spesifikasi, sementara User Acceptance Testing (UAT) dengan 24 responden menghasilkan tingkat penerimaan 90%. Hasil penelitian membuktikan bahwa integrasi InterPlanetary File System (IPFS) dengan smart contract ERC-721 dapat mengatasi permasalahan permanensi metadata dan aset digital, sekaligus menyederhanakan proses minting Non-Fungible Token (NFT) bagi pengguna non-teknis melalui antarmuka yang intuitif.Kata kunci: Non-Fungible Token (NFT); ERC-721; IPFS; Kontrak Pintar; Blockchain; Abstract - Podo Practical implementations of Non-Fungible Tokens (NFTs) often face data permanence issues due to reliance on centralized storage systems vulnerable to deletion and modification. This research develops a web-based Decentralized Application (DApp) for NFT creation that integrates the InterPlanetary File System (IPFS) with ERC-721 Smart Contracts on the Ethereum blockchain. The development methodology employs a waterfall approach with React.js and Next.js for frontend implementation and Solidity for smart contracts. The system is designed with a three-tier architecture facilitating NFT collection creation through the NFTFactory contract and token management through NFTCollection, with metadata and digital assets stored using Content Identifiers (CID) on IPFS. Black box testing demonstrates that all system functions operate according to specifications, while User Acceptance Testing (UAT) with 24 respondents yields an acceptance rate of 90%. The research findings prove that integrating IPFS with ERC-721 smart contracts addresses metadata and digital asset permanence issues while simplifying the NFT minting process for non-technical users through an intuitive interface.Keywords: Non-Fungible Token (NFT); ERC-721; IPFS; Smart Contract; Blockchain;
Ovaj rad predstavlja razvoj prototipa decentralizirane društvene mreže temeljene na tehnologijama Web3. S obzirom na sve veće nepovjerenje korisnika prema tradicionalnim, centraliziranim društvenim mrežama, cilj je izraditi rješenje koje korisnicima omogućuje privatnost, sigurnost i vlasništvo nad vlastitim podacima. Aplikacija koristi blockchain Ethereum za upravljanje identitetom i interakcijama korisnika i Metamask za autentikaciju. Sadržaj se pohranjuje distribuirano putem sustava IPFS i mreže istorazinskih dionika Gun. Implementirane su funkcionalnosti poput objavljivanja sadržaja, spremanje objava, označavanje objava sa "sviđa mi se", komentiranja, slanja zahtjeva za prijateljstvo i drugih interakcija. Uz sve navedeno, aplikacija uključuje izravni (peer-to-peer) chat, te sustav za nagrađivanje korisnika putem ERC-20 tokena za aktivnosti, interakciju i kvalitetan sadržaj. Sustav je implementiran lokalno pomoću IPFS i GUN čvorova na dva uređaja. Postavljen je temelj za daljnju optimizaciju i širenje funkcionalnosti, kako bi se ostvarila stvarna, sigurna i decentralizirana mreža.
Sistem pemilihan konvensional masih menghadapi berbagai tantangan, seperti kurangnya transparansi, lambatnya proses penghitungan suara, dan birokrasi yang kompleks. Untuk menjawab permasalahan tersebut, penelitian ini mengembangkan sistem e-voting berbasis Blockchain dengan memanfaatkan platform ZenChain Testnet. Pemilihan ZenChain didasarkan pada kemampuannya menyediakan lingkungan uji coba yang ringan, mendukung smart contract, dan kompatibel dengan arsitektur DAO (Decentralized Autonomous Organizations). Metode yang digunakan adalah metode Prototype, yang diterapkan melalui tahapan desain awal sistem, implementasi fungsional, pengujian antarmuka, serta evaluasi berulang berdasarkan umpan balik. Tujuan dari penelitian ini adalah menciptakan sistem e-voting yang aman, efisien, dan transparan melalui pemanfaatan smart contract untuk mengotomatisasi proses validasi pemilih, pemungutan suara, dan perhitungan hasil. Hasil implementasi menunjukkan bahwa seluruh transaksi berhasil dicatat secara permanen di dalam Blockchain, sehingga mencegah potensi manipulasi data. Pengujian dilakukan menggunakan metode black box dengan 4 skenario uji fitur utama, seperti validasi pemilih, input suara, dan kalkulasi hasil. Semua skenario berhasil dijalankan tanpa error, dengan response time rata-rata di bawah 9 detik. Kesimpulannya, sistem e-voting berbasis Blockchain pada ZenChain Testnet terbukti mampu meningkatkan integritas dan efisiensi pemilu secara teknis. Namun, untuk implementasi skala besar, diperlukan strategi peningkatan infrastruktur, pengujian skalabilitas lebih lanjut, serta program literasi digital bagi masyarakat guna memastikan adopsi yang menyeluruh.
In today's world, e-government services are critical for assisting citizens with their daily activities such as visa applications, tax submission, emergency security assistance, and electronic tendering. By combining blockchain and IoT technologies, e-government services can be made far more secure and efficient. Existing e-government applications suffered from a number of limitations, including a lack of privacy and security, increased job processing time, a lack of coordination among various parties, and a lack of services. More specifically, they did not conduct simultaneous investigations into citizen service, employee service, and business service while comparing performance. To conquer these issues, this article proposes a decentralized blockchain-based secure and privacy-preserving smart e-government system that considers the interactions between informers, government, smart contracts, MetaMask-based public and private wallets, Ethereum, and the Interplanetary File System. We investigated the time and cost delays associated with employee, business, and citizen services in the proposed blockchain-based e-government system. This paper provides appropriate security measures for mitigating malware attacks, DDoS attacks, and Sybil attacks. Our simulation results show that the proposed blockchain-based e-government system can reduce the completion time of existing works by at least 33%. Received: 2 November 2024 | Revised: 6 February 2025 | Accepted: 23 May 2025 Conflicts of Interest The author declares that they have no conflicts of interest to this work. Data Availability Statement The data that support this work are available upon reasonable request to the corresponding author. Author Contribution Statement Nahid Imtiaz: Conceptualization, Methodology, Software, Validation, Formal analysis, Investigation, Resources, Data curation, Visualization. Mahfuzulhoq Chowdhury: Conceptualization, Methodology, Investigation, Resources, Data curation, Writing – original draft, Writing – review & editing, Visualization, Supervision, Project administration.
Abstract: This e-commerce platform is specifically designed for agriculture-based trade, leveraging advanced blockchain technology and decentralized file storage to create a transparent, secure, and efficient marketplace for farmers, buyers, and suppliers. The platform utilizes Ganache, a simulation of Ethereum transactions, to ensure that all transactions are secure, immutable, and verifiable on the blockchain. The decentralized architecture is further enhanced with IPFS (Interplanetary File System), enabling farmers to securely store their product information, including images and descriptions, in a way that prevents alteration or loss. This ensures that the product listings are transparent and tamper-proof. The platform also incorporates cryptocurrency payments, enabling fast, secure, and borderless transactions between buyers and sellers. Utilizing smart contracts, the system automates payment flows based on predefined conditions, reducing the reliance on intermediaries and minimizing fraud risks. This fosters a trusted environment for agricultural trade, where both buyers and sellers can engage in transparent, efficient, and secure transactions. In addition to these core features, the platform includes a staking mechanism, allowing users to lock tokens to gain transaction privileges, influence governance decisions, and access premium features. This incentivizes long-term commitment and creates a sense of ownership within the platform. Active participants, such as those verifying transactions or maintaining data integrity, are rewarded with tokens, further promoting continuous engagement. The system also supports multilingual user interfaces, making it accessible to a global audience, and includes real-time updates for seamless interaction. Through transparent governance, decentralized voting, and economic incentives, the platform ensures a resilient and future-ready ecosystem for agro-commerce, empowering stakeholders to participate in decision-making and market dynamics, while addressing the challenges faced by farmers in accessing reliable markets and efficient payment systems.
The agricultural sector faces challenges in managing dynamic data during transactions, particularly price quotations between farmers and buyers. Traditional smart contract systems often lack the flexibility to handle real-time data changes. This research proposes a customized logging system that integrates smart contracts with the InterPlanetary File System (IPFS) within a web application. By storing data references (hashes) on the blockchain and actual logs on IPFS, the system ensures reliable data recording, flexibility in updating transaction logs, and improved storage efficiency. This integration enhances the system's ability to manage fluctuating agricultural transactions. The proposed method aims to create a robust framework for managing price quotations, which can be extended to other industries with similar requirements.
Blockchain transformative technology that enables secure, decentralized, and immutable transaction recording through a network of cryptographic blocks, enhancing transparency and trust without the need for a central authority or intermediaries. The Ethereum platform builds upon this foundation by facilitating the development of decentralized applications (dApps) and smart contracts, which automate processes and improve operational efficiency. In higher education, the Student Activity Credit Unit (SACU) system exemplifies the application of blockchain by managing both academic and non-academic achievements, thus promoting a holistic approach to student development and enhancing essential soft skills like leadership and teamwork. By leveraging a decentralized system built on Hyperledger Besu, the SACU ensures that student records are secure, transparent, and scalable, while providing real-time monitoring and verification of achievements. This paper evaluates the decentralized student’s achevements record model, demonstrating its improvements in transparency, security, and efficiency over existing systems, ultimately preparing graduates for professional success and fostering trust in the recognition of their qualifications.
In blockchain ecosystems, maintaining transparency and privacy has become an ethical dilemma. This is because, while certain specific information of the user is shared to ensure transparency of transactions across networks, such information could be detrimental to the user, as there is a possibility of it being tampered with. For instance, in the Catalyst voting process in Cardano, users can still see the amount of ADA tokens being held by other users, which can influence their voting options, especially when large ADA holders vote in support of certain ideas or proposals. To discourage such challenges as voter manipulation and vote buying, this study proposed the implementation of zero-knowledge proof (ZKP) in blockchain ecosystems to enhance the transparency of the catalyst voting process and enhance efficiency and speed of result release. Using survey questionnaire and a multivocal literature review, this study was able to proof that ZKP cannot only be applied in the catalyst voting process to enhance its transparency, but also addressed potential challenges to its applications such as scalability, encourage trust and fairness of the voting system, and improve voter participation due to its user-friendliness. Mathematical models emphasize scaled voting as optimal for balancing inclusion and plutocratic control.
The role of counterfeit goods in the industrial industries has grown in recent years. Name recognition, sales, and bottom line results are all impacted. Authentic products can be located and counterfeit goods can be identified with the use of blockchain technology. Distributed ledger technology, also known as blockchain, is a digital system that records transactions in a decentralised database using a system of interconnected blocks. Since blockchain technology is impenetrable, no one block can be altered or compromised. Customers and users can verify the safety of a product without depending on other users thanks to blockchain technology. As mobile and wireless technologies continue to evolve, this investigation finds that rapid response (QR) codes offer a strong tool in the fight against product counterfeiting. Using a QR code scanner that is connected to a blockchain can help identify counterfeit products. One possible usage of this system is to create unique codes for products and store them in the database as blocks. It takes the user's one-of-a-kind code and checks it against records in the blockchain ledger. A notification will be sent to the consumer if the code matches. In any other case, the buyer will be alerted that the goods is counterfeit.
The Internet has become one of the main media, especially e-commerce transactions, which are increasingly popular and play an important role in the growth of online businesses. The RestLyfe store uses the Itemku platform, which uses a Business to Customer (B2C) and Customer to Customer (C2C) model, to sell digital products such as digital vouchers and game keys. However, some of the issues faced when using the platform include high costs, limited market reach, and payment methods that can only be used by certain customers. Building an e-commerce website and adding a cryptocurrency payment gateway will hopefully solve these problems. To achieve this goal, an e-commerce website based on the WordPress content management system (CMS) with the WooCommerce plugin will be built. This plugin will incorporate a cryptocurrency payment gateway and facilitate transaction design. To collect related data, observation and literature review were conducted. The waterfall model System Life Cycle Development (SDLC) method will be used to build the e-commerce website. The results and conclusions of this study show that the website built can solve the problem with implementation results that meet the needs of the initial analysis, and the results of black box testing conducted on the website show good results. In addition, this study demonstrates the use of modern sales strategies for cryptocurrencies and the optimization of the latest technologies. Thus, the e-commerce site offers more opportunities to reach the target market and meet the needs of an increasingly digitized market.
Digital transformation and new technologies have made people’s lives easier and led to great results in most areas of business and society. Implementing blockchain technology is one of the best tools for establishing sustainable smart cities and societies. In terms of sustainable governance sophisticated and secure voting systems are necessary to achieve high integrity and transparency and null election fraud, and, in environmental sustainability, e-voting systems eliminate the mass waste of paper and transportation gas emissions; namely, e-voting systems are eco-friendly with high democratic outcomes. Blockchain technology can revolutionize e-voting by increasing the security and transparency of the voting process. Integrating artificial intelligence (AI) and machine learning (ML) into blockchain-based e-voting systems further augments their effectiveness. AI algorithms can analyze voting patterns and detect irregularities, supporting the prevention of fraudulent activities and coercion. ML procedures can enhance voter authentication processes, improve accessibility for diverse demographics, and optimize the productivity of blockchain networks during peak voting periods. This study focuses on understanding citizen perceptions of blockchain-based e-voting in a smart city context using the Technology Acceptance Model (TAM). The study’s results indicate that perceived ease of use and perceived usefulness are important factors in determining citizens’ intentions to use blockchain-based e-voting. Furthermore, trust in the technology and perceived security were found to influence the usefulness of blockchain-based e-voting positively. This study provides important insights for policymakers and technologists seeking to promote the adoption of blockchain-based e-voting systems in smart cities. The findings of the research supported the research model with positive results. In conclusion, our research model encourages the adoption of a blockchain-based e-voting system to enhance the future voting environment.
Az Zahra Nashira Ryan, Aris Prio Agus Santoso, Giovania Madeira Do Carmo, Jonathan James Kurniawan · 5 authors
The use of cryptocurrency assets in Indonesia is still prohibited as a means of payment but as an investment instrument it can be included as a commodity that can be traded on a term exchange as regulated in the regulation of Law No. 10 of 2011 concerning amendments to Law No. 32 of 1997. The positive impact of cryptocurrencies in consumer protection such as cryptocurrency financial access can provide access to the traditional banking system, thereby increasing financial inclusion. There are also negative impacts to consider in consumer protection: security risks associated with theft or hacking of cryptocurrency exchange platforms and digital wallets can threaten the security of consumer funds. This study aims to analyze about consumer protection of cryptocurrencies in the digital age. This research uses normative research methods and uses qualitative data types. The results of this study show that consumer protection in cryptocurrency in the digital era, among others, preventively, in cryptocurrency trading transactions as assets is also strengthened by the Regulation of the Commodity Futures Trading Supervisory Agency Number 9 of 2019 concerning Amendments to the Regulation of the Commodity Futures Trading Supervisory Agency Number 5 of 2019 concerning Textile Arrangements for the Implementation of the Physical Market of Cryptocurrency Assets on Futures Exchanges. Meanwhile, if repressively to protect what is given after a dispute arises in the form of sanctions, fines, imprisonment, and penalties imposed a dispute occurs, regulated in Article 22 of PerBappeti Number 5 of 2019 concerning Technical Provisions for the Implementation of the Physical Market of Cryptocurrency Assets on the Futures Exchange, that dispute resolution is carried out by deliberation to reach consensus if it does not reach consensus the parties can resolve through the Futures Trading Arbitration Agency Commodity (BAKTI) and the State Court as stated in the agreement between the parties. Bank Indonesia reaffirms the ban on the use of virtual currencies in cryptocurrency, both in the form of selling, buying, and trading with these currencies.
H. N. Singh, HAASHIM. SYED -, V - RAHUL., Jai Jayesh Shah
This study explores student awareness and attitudes towards cryptocurrency, finding a high level of general awareness (58%) with no significant gender differences. Younger students might be slightly more aware, but this needs further investigation. Interestingly, some females reported lower familiarity with blockchain technology and found the system less user-friendly. These trends suggest areas for promoting wider and more inclusive cryptocurrency adoption among all students.
Saur Costanius Simamora, Vanessa Gaffar, Meta Arief
Tinjauan literatur sistematis ini mencoba menjawab pertanyaan tentang metode apa yang digunakan untuk menganalisis bagaimana teknologi blockchain berperan dalam perkembangan periklanan digital. Lalu apa peran teknologi blockchain dalam perkembangan periklanan digital di industri lain. Blockchain memainkan peran besar dalam pemasaran digital, karena industri periklanan digital secara historis sangat bergantung pada pihak ketiga. Blockchain dapat menghilangkan perantara antara dua pihak, sehingga membantu merek dan pelanggan. Salah satu pendekatan studi literatur adalah Systematic Literature Review (SLR). Penelitian ini menggunakan Systematic Literature Review dengan Metode Prisma dengan bantuan UAKE, VOS viewer, dan Aplikasi Mendeley Watase. Penelitian ini dibatasi dengan hanya mencari artikel jurnal Scopus Q1, Q2, Q3, dan Q4, terbitan tahun 2018-2022. Berdasarkan (26) dua puluh enam artikel yang ditelaah, melalui proses systematic literature review, dengan rentang waktu terbitan artikel antara tahun 2018 sampai dengan 2022. Diperoleh hasil bahwa hanya sepuluh artikel yang memenuhi kriteria dan dijadikan rujukan dalam penelitian ini. Metode analisis data yang banyak digunakan ialah perancangan atau system planning (5 artikel), kemudian qualitative method (2 artikel), quantitative method (1 artikel) dan exploratory factor (1 artikel). Hasil penelitian menunjukkan bahwa teknologi blockchain berperan besar dalam perkembangan periklanan digital (digital advertising), yang banyak diterapkan di industri e-commerce, telekomunikasi, otomotif, pertanian, hiburan (film) bahkan untuk deteksi penipuan dan pencegahan kejahatan dalam periklanan online. Kata kunci : s tudi Pustaka; SLR; blockchain; periklanan digital; PRISMA
The purpose of this study is to analyze the sentiment generated from researchers' opinions through published articles related to bitcoin. Bitcoin is related to financial operations, online monetary transactions, electronic transactions, financial control, electronic payments and electronic money. Others, bitcoin is an electronic payment tool with a peer-to-peer concept that allows users to transact with each other without the intermediary of financial institutions. The data analyzed consisted of 99 research articles indexed by Scopus in 2022. The method used is a qualitative approach with descriptive statistics from the study of bitcoin-themed literature. The results showed that neutral sentiment was the highest result with a percentage of 48% followed by negative sentiment of 23%, positive sentiment 22%, high positive sentiment 4%, and high negative sentiment 3%. The diversity of sentiment results is obtained because of the pros and cons of bitcoin's existence
Istian Kriya Almanfaluti, Niken Amelia Putri, Muhammad Saddam Navaro
This research endeavors to contribute to the rapidly evolving landscape of technology-driven payment systems, with a focus on Indonesia. The primary objective is to design and develop a mobile application for a cryptocurrency digital wallet integrated with Quick Response Code Indonesian Standard (QRIS). The methodology involves utilizing Webservice for seamless implementation and Android Studio Framework for efficient mobile application development. The results showcase the successful creation of a mobile application that enables cryptocurrency owners to convert virtual assets into Indonesian Rupiah for various transactions, including purchasing mobile credits, electricity tokens, travel tickets, and other payments. The evaluation underscores the feasibility and practicality of the proposed solution, emphasizing the potential for increased ease, speed, and efficiency in transaction processing. This research opens avenues for further exploration and implementation of cryptocurrency-based payment systems, addressing the evolving needs of the digital economy in Indonesia and potentially serving as a model for global applications.Highlights : Seamless Implementation: The research successfully employs Webservice for the integration of a cryptocurrency digital wallet with QRIS, ensuring a smooth and efficient transaction process. Android Studio Framework: The use of the Android Studio Framework demonstrates the applicability and versatility of established tools in developing a robust and user-friendly mobile application for cryptocurrency transactions. Efficiency in Digital Transactions: The designed mobile application enables cryptocurrency owners to convert virtual assets to Indonesian Rupiah, enhancing transaction speed, ease, and overall efficiency in various financial interactionKeywords: Cryptocurrency, E-Wallet, QRIS Integration, Mobile Application, Digital Transactions. Keywords : Cryptocurrency, E-Wallet, QRIS Integration, Mobile Application, Digital Transactions.
The concept of Blockchain-based Smart Sukuk involves the use of Blockchain technology and smart contracts in the issuance and execution of Sukuk. Smart Sukuk and Blockchain: One of the innovations of Blockchain systems is smart sukuk. Effective issuance of smart sukuk allows small and medium enterprises (MSMEs) to take advantage of it. Because it increases transparency and eliminates the possibility of fraud or speculation in sukuk transactions, Blockchain is a technology that builds trust between issuers and investors. Smart Contracts: Smart contracts run on the Ethereum Blockchain and allow smart sukuk to be automated and executed digitally. Smart contracts eliminate some of the components and parties involved in conventional sukuk, such as trustees, registrars, payment agents, calculation agents, arrangers, listing agents, transfer agents, and security depository. MSME Financing Potential: Blockchain-based Smart Sukuk has the potential to support the development of MSMEs and the deepening of the Islamic financial sector. Efficiency and Transparency: The use of Blockchain technology in Smart Sukuk can increase efficiency, transparency, and cost, allowing companies to utilize sukuk structures more efficiently
Background: Due to the increased interest in cryptocurrencies, opinions on cryptocurrency-related topics are shared on news and social media. The enormous amount of sentiment data that is frequently released makes data processing and analytics on such important issues more challenging. In addition, the present sentiment models in the cryptocurrency domain are primarily focused on English with minimal work on Malay language, further complicating problems. Objective: The performance of the sentiment regression model to forecast sentiment scores for Malay news and tweets is examined in this study. Methods: Malay news headlines and tweets on Bitcoin and Ethereum are used as the input. A hybrid Generalized Autoregressive Pretraining for Language Understanding (XLNet) language model in combination with Bidirectional-Gated Recurrent Unit (Bi-GRU) deep learning model is applied in the proposed sentiment regression implementation. The effectiveness of the proposed sentiment regression model is also investigated using the multi-head self-attention mechanism. Then, a comparison analysis using Bidirectional Encoder Representations from Transformers (BERT) is carried out. Results: The experimental results demonstrate that the number of attention heads is vital in improving the XLNet-GRU sentiment model performance. There are slight improvements of 0.03 in the adjusted R2 values with an average MAE of 0.163 (Malay news) and 0.174 (Malay tweets). In addition, an average RMSE of 0.267 and 0.255 were obtained respectively for Malay news and tweets, which show that the proposed XLNet-GRU sentiment model outperforms the BERT sentiment model with lesser prediction errors. Conclusion: The proposed model contributes to predicting sentiment on cryptocurrency. Moreover, this study also introduced two carefully curated Malay corpora, CryptoSentiNews-Malay and CryptoSentiTweets-Malay, which are extracted from news and tweets, respectively. Further works to enhance Malay news and tweets corpora on cryptocurrency-related issues will be expended with implementing the proposed XLNet Bi-GRU deep learning model for greater financial insight. Keywords: Cryptocurrency, Deep learning model, Malay text, Sentiment analysis, Sentiment regression model
Chang Chi Hung, Jacky Filbert Wijaya, Victor Victor, Irpan Adiputra Pardosi · 5 authors
Bitcoin merupakan salah satu cryptocurrency paling berharga di dunia dan diperdagangkan di lebih dari 40 bursa di seluruh dunia dan menerima lebih dari 30 mata uang berbeda dengan 250.000 transaksi per hari. Dalam perdagangannya, Bitcoin menunjukkan fluktuasi pada pasar yang diperdagangkan, dalam hal ini fluktuasinya dapat mencapai 10 kali lebih tinggi daripada fluktuasi nilai tukar mata uang asing. Karena fluktuasi harga bitcoin yang masif dan tinggi, prediksi fluktuasi harga sangat dibutuhkan, terutama karena harga bitcoin bergerak dengan sangat acak. Untuk melalukan prediksi flutuktuasi harga, Random Forest classifier merupakan salah satu algoritma machine learning yang sering digunakan untuk prediksi, kesehatan, artificial intelligence, dll. K-means clustering juga dipergunakan untuk membantu algoritma random forest classifier dalam hal mengkluster data. Hasil dari penelitian ini yaitu melakukan prediksi terhadap naik atau turunnya harga bitcoin dengan akurasi sebanyak 71% yang didapatkan dari perbandingan hasil prediksi dan data asli dengan bantuan algoritma confusion matrix.
Blockchain technologies deliver an endless variety of applications that benefit from distributed economies. The proposed model is an Android application that has enhanced security features, which include both authentication and authorization. Authentication is incorporated by using a unique identification and authorization is done by using a fingerprint. Voters are also being verified by time password. The security in this project is implemented by using a 128-bit AES encryption algorithm and SHA-256 along with the blockchain. The vote is cast in the form of a transaction, where a blockchain is created, which keeps track of the tallies of votes. Through this, atomicity and integrity are maintained This blockchain-based voting system that satisfies the legal requirements of legislators has been a challenge for a long time. Distributed ledger technologies are an exciting technological advancement in the information technology world Blockchain technologies offer an infinite range of applications, benefiting from sharing economies. This project aims to evaluate the application of blockchain as a service to implement distributed electronic voting systems. The project elicits the requirements for building electronic voting systems and identifies the legal and technological limitations of using blockchain as a service for realizing such systems.