In 2020-2021 where the world experienced a Covid-19 pandemic, the price of Bitcoin increased and there was a fairly high price spike at the turn of the year 2020-2021 and had touched an all-time high (ATH) at the end of 2021. Bitcoin is one of the currencies crypto that is volatile when compared to the exchange rates of widely used currencies. In addition, Bitcoin price movements are difficult to predict. The samples used are Euro, Pound Sterling, Yuan, Yen, Ruble, Franc, and Bitcoin. The data used is in the form of Bitcoin price data and some of these currencies in 2020-2021. This study aims to find the relationship between volatility with Bitcoin trading volume, return with Bitcoin trading volume, and return with Bitcoin volatility for forecasting purposes. The research method used is the Augmented Dickey-Fuller (ADF) stationarity test, then using the ARMA model after that using the EGARCH model to find the relationship. The results of this study indicate that there is a positive relationship between volatility and Bitcoin trading volume. Just like the return and trading volume of Bitcoin there is a positive relationship. However, Bitcoin returns, and volatility have a negative relationship. For further research can use different crypto currency assets with different time periods. Keywords: Volatility, Volume, Returns, Bitcoin, GARCH
Anatasya Pratiwi Putri, Raja Ria Yusnita, Raja Ade Fitrasari Mochtar
Cryptocurrency is a digital currency that can be used for transaction tools, using cryptography so that it is difficult to counterfeit. The crypto does not have a physical form, but can still be used as a digital asset. This study aims to determine an efficient portfolio of several cryptocurrencies by forming an Efficient Frontier Line. The efficient frontier line is formed by determining the risk and return of 6 cryptocurrencies, namely Bitcoin, Dogecoin, Yearn.finance, Binance Coin, Monero and Cardano. The technique used to select the sample is direct observation or observation of the prices of 6 cryptocurrencies for the period January-December 2021. In addition, literature studies through journals, news related to cryptocurrencies are also used. To form an efficient portfolio model, this study uses quantitative and qualitative analysis. The result of this study is that there are investment options for investors who like risk, choosing the proportion that maximizes profits with high risk. For investors who do not like high risk, they can choose the minimum proportion, and for moderate investors who can accept the risk of an equal proportion can choose a random proportion. Based on the results of the 3 proportions that will be chosen by investors, Bitcoin is one of the cryptocurrencies that is always chosen to invest because Bitcoin is a crypto that produces efficient returns and risks even though the risk in Bitcoin is quite high at certain returns.Keywords: Cryptocurrency, Risk, Return
Indodax is one of the cryptocurrency trading platforms in Indonesia that has the highest sentiment for the quality they provide, good quality on a platform is an important factor in obtaining user satisfaction and will have an impact on the long-term success of a company. The importance of user satisfaction on cryptocurrency online trading platforms is a significant factor in increasing user loyalty in today's competition. This research was conducted to analyze the quality of existing cryptocurrency trading platform services so that they can be input for cryptocurrency trading service providers to improve the quality of their services, this information can also be considered by prospective platform users in choosing a trading platform that has the best quality of service to minimize losses that may be caused by the platform. In this study, sentiment analysis was used for indodax play store platform users and then processed using the lexicon classification method to produce sentiment analysis for each significant factor of service quality. From the results of the classification carried out in this study, the results of the analysis show that most users are satisfied and give positive sentiments related to security, namely 87.63%, positive sentiments related to the interface design 88.46%, positive sentiments related to service & convenience by 83%, but some users also gave a slightly positive sentiment related to administrative costs, namely 39%, and their negative sentiment was mostly related to the error & failure system, which received more than 80% sentiment. While the recall value is 38.07%, the precision is 56.69% and the f1-score is 45.55%. The results of this study can be concluded that there are still many important points that must be improved in quality by the indodax platform service providers so that they can be more attractive and used by everyone.
Abstract This entire system stands upon blockchain technology. The system is initially broken down in sections like different modules for patient, doctor, pharmacy and insurance agent. It is completed utilising a personal blockchain from Corda and Ethereum called Ganache as well as a private blockchain. This supports the development, testing, and general deployment of dApps. An Ethereum development framework is called Truffle Suite. Completely control the lifetime of modern contracts that includes bespoke installations, linking with different libraries and intricate applications on Ethereum. In dApps, Meta Mask is usefull for account creation, login and bitcoin transcations. The storage of all huge files and documents is done using the IPFS technology. Because IPFS is a P2P network circuit for decentralised data storage and the produced hash is simple to store on the blockchain, it is used. ReactJS was used to build the system’s front end. The Remix online compiler for Solidity is used to build and test smart and modern contracts that are written in the Solidity blockchain programming language.
The higher education management systems first identified and realized the trap of pitting innovation against privacy while first addressing COVID-19 social isolation challenges in 2020. In the age of data sprawl, we observe the situation has been exacerbating since then. Integrating blockchain technology has the potential to address the recent and emerging challenges in the higher education management system. This paper unravels the Good (scopes and benefits), Bad (limitations), and Ugly (challenges and trade-offs) of blockchain technology integration in the higher education management paradigm in the existing landscape. Our study adopts both qualitative and quantitative approaches to explore the experiences of educators, researchers, students, and other stakeholders and fully understand the blockchain's potential and contextual challenges. Our findings will envision an efficient, secure, and transparent higher education management system and help shape the debate (and trade-offs) pertaining to the recent shift in relevant business and management climate and regulatory sentiment.
Bitcoin merupakan komoditas digital yang berbasis pada kriptografi, atau dapat disebut sebagai mata uang virtual atau mata uang digital, yang itu dipakai oleh para penggunanya untuk alat dalam bertransaksi dan berinvestasi. Di Indonesia sendiri penggunaan bitcoin tidak hanya persoalan dalam perkembangan pengetahuan dan teknologi, akan tetapi sudah memasuki area pembahasan fikih. Fatwa Majelis Ulama Indonesia (MUI) dalam Ijtima Komisi Fatwa yang menetapkan bahwasanya penggunaan bitcoin sebagai alat tukar adalah haram disebabkan terdapat unsur gharar dan dharar, tidak diakui oleh Pemerintah sebagai alat tukar dan rawan dijadikan tindak kejahatan terutama cyber crime. Tujuan dari penelitian ini adalah menganalisa apa dasar pertimbangan hukum MUI tentang menetapkan hukum bitcoin dan metode penetapan hukum apa yang digunakan. Penelitian ini merupakan jenis penelitian hukum normatif atau penelitian pustaka yaitu dengan menjadikan referensi pustaka dan dokumen yang relevan dalam penelitian ini. Adapun sumber data berupa sumber data primer dan sekunder. Teknik dalam pengumpulan data penulis memakai studi kepustakaan dan dianalisis menggunakan deskritif analisis. Berdasarkan analisis yang dilakukan dapat disimpulkan bahwa MUI secara tegas mengharamkan bitcoin dikarenakan terkandung gharar, dharar dan qimar didalamnya. Dan dalam metode penetapan hukumnya, MUI menggunakan al-Qur’an, Sunnah dan Pendapat Ulama.Kata Kunci: Bitcoin, MUI, Istinbath, Fatwa
Razi Azrie Ismail, Nur Haliza Abdul Wahab, Khairunnisa A. Kadir, S. Zaleha.H · 8 authors
A platform that enables users to schedule appointments and connect with dentists is called the Dental Services System. The bulk of appointment slot orders are placed through more traditional channels, such phone calls, texts, or clinic entrances, prior to obtaining treatment. When staff members are unable to alter their status or take too long to provide information, schedule a time, or complete an assignment, this might be troublesome. Blockchain technology is a distributed ledger system that makes use of mathematics, algorithms, encryption, and financial factors. Blockchain's high-security design makes it safe, and the immutability of the data stored there helps to increase public confidence. Data storage databases that use blockchain technology and include security features that permit the exploitation of exposed user data are the main subject of the study. The blockchain may be integrated into a dental service system because of its excellence. The goal of this implementation of blockchain technology into a Dental Service System is to guarantee complete confidentiality while enabling authorized users to quickly create and get permanent records when paired with an application layer. The goal of this project is to create a tool that allows users to schedule appointments while utilizing a blockchain for safe data storage. In the end, this application will facilitate user appointment scheduling while limiting third parties' access to user data.
Penelitian ini bertujuan untuk menganalisa perbandingan kinerja Bitcoin, indeks saham LQ45, dan emas spot sebagai instrumen investasi menggunakan variabel pengukuran kinerja return, risk, Sharpe, Treynor, dan Jensen. Jenis penelitian ini merupakan kuantitatif. Populasi yang digunakan merupakan harga penutupan bulanan dari Bitcoin, indeks saham LQ45, dan emas spot. Teknik pemilihan sampel adalah purposive sampling yang berjumlah 72 data untuk masing-masing instrumen investasi Bitcoin, indeks saham LQ45, dan emas spot selama periode 1 Januari 2017-31 Desember 2022. Teknik analisa data yang digunakan adalah uji Kruskal-Wallis. Hasil penelitian ini menunjukkan bahwa Bitcoin, indeks saham LQ45, dan emas tidak memiliki perbedaan yang signifikan terkait return, sedangkan pada aspek risk, Sharpe, Treynor, dan Jensen terdapat perbedaan yang signifikan. Selain itu, instrumen investasi dengan kinerja return, risk, Sharpe, dan Treynor tertinggi dimiliki oleh Bitcoin, sedangkan pada pengukuran kinerja Jensen dengan nilai tertinggi dimiliki oleh indeks saham LQ45. Simpulan pada penelitian ini adalah kinerja instrumen investasi terbaik dimiliki oleh Bitcoin. Penelitian ini diharapkan dapat dijadikan sebagai sumber referensi dan bahan pertimbangan bagi para investor atau masyarakat secara umum dalam memilih instrumen investasi.
Recently, conventional art assets and those in the form of NFTs have experienced significant price increases. The purpose of this research is to raise the NFT phenomenon in art activities in Indonesia. Researchers used qualitative methods with an emphasis on observation and literature studies to obtain data. The research results show that the NFT market has the potential to be a place of various scams. Then, as NFT creators, artists are only given tantalizing images, especially those related to the metaverse. Meanwhile, NFT in the near future cannot replace conventional works of art. In conclusion, NFT is beneficial for artists, but the challenge is that metaverse developers must provide a creative medium that is safer from fraudulent acts.
Abstract: Electronic First Information Report (e-FIR) is a document filed to the police stations by a victim or accuser when offense is committed. In traditional e-FIR databases, offense’s records can be tampered because of its centralized nature. Also intentional false e-FIR can be registered. Thus, data transparency and integrity is big concern. To overcome this problem e-FIR with decentralized blockchain system can be integrated with e-FIR portal. The main characteristics of the blockchain technology are advanced security and decentralized system. This technology uses the encrypted blocks to make FIR data secured. Proof of Stake (PoS) protocol is used in this system. Users have to submit e-FIR through portal which will be stored in blocks in blockchain. Due to advanced security feature of system, data tampering will be prevented. Integrating such FIR registration system will ensure transparency and enhance data integrity.
Aji M. Iqbal Fadhilah, Odi Nurdiawan, Fadhil M. Basyisyar
Litedex adalah sebuah perusahaan startup berbasis teknologi blockchain. Penerapan blockchain dilakukan dengan menciptakan utilitas dari berbagai setor, salah satunya di sektor pendidikan. Rendahnya ketersediaan informasi dan minat pasar serta sulitnya memvalidasi keaslian berkas sertifikat, dimana berkas tersebut ada potensi untuk dimanipulasi menjadi sebuah masalah yang harus diciptakan solusi. Saat ini, ketersediaan informasi mengenai blockchain hanya tersedia di laman resmi media informasi global yang hanya berbahasa inggris, seperti Coinmarketcap. Penelitian ini bertujuan untuk mengintegrasikan layanan Sistem Informasi dengan Blockchain dan NFT yang dapat memfasilitasi proses pembelajaran yang cepat, data tersimpan secara terdistribusi ke dalam blockchain dengan aman, dan bukti keabsahan dari proses penyelesaian studi dapat diakses secara publik dan dapat divalidasi dengan mudah karena NFT memiliki id parameter yang unik. Metode penelitian menggunakan metode prototype dengan mengimplementasi Rapid Application Development (RAD) sehingga aplikasi yang dibuat bisa dikembangkan dan diperbaiki dengan cepat karena kebutuhan dan perkembangan blockchain yang super cepat. Bahasa pemrograman yang digunakan adalah PHP dengan framework Laravel, Solidity, React JS, Javascript, dan MYSQL. Hasil dari penelitian ini adalah sebuah Sistem Informasi di sektor pendidikan yang dapat terintegrasi dengan Blockchain untuk proses penyimpanan dan pendistribusian data yang aman dan penerapan NFT sebagai asset digital yang merepresentasikan identitas dan bukti proses hasil belajar yang dapat divalidasi dengan akurat karena memiliki unik id dan tidak dapat dimanipulasi. Sistem ini dapat berjalan untuk proses pembelajaran, pemberian soal, pendistribusian bukti proses hasil belajar, laporan statistik pengguna dan dapat terintegrasi dengan utilitas Litedex maupun utilitas pengembang blockchain yang lainnya.
A cryptocurrency exchange application is a platform that provides a facility for users to do a crypto asset transaction. In Indonesia, there are two types of applications, regulated and unregulated apps with various and different facilities. This research aims to analyze factors that influence users' acceptance to use cryptocurrency exchange applications with extended TAM methods with 7 external variables such as design, experience, perceived risk, regulatory support, social influence, trust, and perceived benefit. Then, we analyzed the data collected using the Structural Equation Modeling (SEM) -Partial Least Square (PLS) method. This research's result was conducted to analyze and give recommendations for the next research and the apps provider regarding factors that influenced users' acceptance to use the cryptocurrency exchange application. The number of samples will be determined using a formula from Roscoe Theory with a minimum of 110 respondents and the questionnaire was filled out by 130 respondents using Google forms. This research's result has proven that trust and design are external variables that affect cryptocurrency exchange application acceptance. In contrast with the previous study in which regulatory support affects the user's trust, this research found social influence and experience are variables that affect user's trust
Cryptocurrency adalah uang digital, yang beredar di dunia maya tidak memiliki wujud fisik, awal kemunculannya tahun 2008 oleh Satoshi Nakamoto, keamanan Crypto dilindungi oleh teknologi blokchain, namun tidak ada lembaga yang bertanggung jawab dan tidak memiliki asset yang mendasar, segala problem yang muncul, menimbulkan pro dan kontra dikalangan pakar ekonomi dan para ulama, crypto belum memenuhi beberapa unsur dan kriteria sebagai mata uang khususnya dalam prinsip Ekonomi Islam, dalam konteks uang digital tidak ada underlying yaitu aset dijadikan sebagai dasar transaksi, uang digital bukan mata uang, ada unsur ketidak jelasan gharar, harga tidak terkendali dan fungsi mata uang digital telah berkembang sekedar alat tukar menjadi komoditas investasi. penelitian ini bertujuan untuk mengetahui bagaimana Transaksi Bitcoin dalam perspektif ekonomi syariah dan pandangan hukum islam terhadap transaksi bitcoin, teori yang digunakan adalah teori transaksi ekonomi dan penelitian ini bersifat studi pustaka (Library Research), Dari penelitian ini dapat disimpulkan bahwa dalam Islam transaksi yang dilakukan harus jelas, wujud, barang, dan maanfaatnya, dan tidak ada pihak yang saling dirugikan, bitcoin haram dan tidak memenuhi syarat sil’ah secara syar’i, selain itu bitcoin juga bertentangan dengan Undang- Undang Nomor 7 Tahun 2011 dan Peraturan Bank Indonesia Nomor 17 Tahun 2015, Di Indonesia alat tukar yang sah hanya satu rupiah.
Sobhi Noureldin Ata, Ahmed K. Hassan, Hossam S. Selim, Badry E. Hammad · 6 authors
Blockchain has received a lot of attention in financial technology, as it combines many computer technologies, including data storage, point-to-point transmission, and consensus mechanisms, as it is considered a decentralized technology for managing transactions and data that has been developed. The study aimed to demonstrate the impact of the use of blockchain technology on the financial performance of investment projects developed by the Ministry of Sports. We used the descriptive approach (survey study method) as an appropriate method to achieve the objectives of the study due to the suitability of its procedures. The participants in the study included some leaders of the Ministry of Sports and experts in the field of sports investment, as well as some leaders working in the directorates of youth and sports, and some members of the board of directors of the Olympic Committee, sports federations, sports clubs, and youth centers. The study sample was selected in a deliberate way based on the categories of the study population. There were 300 participants in the study, and the researchers used two questionnaires as tools to collect the data. The results revealed a lack of the use of blockchain technology at the Ministry of Sports and a low level of financial performance at the Ministry of Sports. With a correlation between the level of financial performance and the use of blockchain technology, the level of the financial performance of the investment projects developed by the Ministry of Sports could be predicted based on the use of blockchain technology. Finally, the study also provides insight into political implications, limitations, and future directions.
Muhamad Rizky Ramadhan, Wita Juwita Ermawati, Anna Fariyanti
Research aims: This study aims to investigate herding behavior in the large-capitalization cryptocurrency market and analyze the role/influence of Indonesia's macroeconomic factors, namely inflation and interest rates, on herding behavior in the large-cap cryptocurrency market.Design/Methodology/Approach: This study used secondary data from the daily closing prices of five large-cap cryptocurrencies and Indonesia's macroeconomic data (inflation and interest rates) from April 2019 to December 2022 by using the Cross-Sectional Absolute Deviation (CSAD) model and Newey-West estimator regression approach to detect herding behavior with a modified independent variable model involving factors influencing herding behavior.Research findings: Based on the results using the Newey-West estimator, three main results were obtained. First, large-cap cryptocurrency investors tend to be irrational in their decisions and follow the decisions of others without reference to their beliefs or herding during the sample period. Second of the two macroeconomic factors studied, i.e., inflation and interest rates, only changes in inflation rates influence investor herding behavior. Third, the market is inefficient with the proven tendency of herding behavior in large-cap cryptocurrencies.Practical and Theoretical contribution/Originality: This study narrows down the research of previous studies by using cryptocurrency research objects with a large market capitalization (large cap). In addition, this research extends the research of previous studies by considering external factors related to macroeconomic conditions in Indonesia in general, such as the inflation rate and the interest rate. This study can provide information about financial behavior in the cryptocurrency market, especially herding behavior, so that investors and policymakers can be assisted in formulating investment strategies and regulating cryptocurrencies.Research limitation: This research was limited to using only cryptocurrency assets by not using crypto-tokens, non-fungible tokens (NFT), and other crypto-assets.
Cryptocurrency adalah teknologi sistem kriptografi yang bertujuan untuk mengamankan dan mengatur otoritas dengan menggunakan sistem desentralisasi untuk mengelola pengeluaran unit baru, mencatat transaksi, dan memberikan jaminan keamanan yang tidak dapat diduplikasi atau ditiru. Oleh karena itu, tidak diragukan lagi bahwa penjahat juga telah menggunakan Bitcoin dalam aktivitas ilegal seperti menerima pembayaran dalam kasus pemerasan online, membayar obat-obatan terlarang, insiden ransomware, mendanai terorisme, transaksi di pasar darknet, dan pencucian uang. Kejahatan yang dilakukan dengan menggunakan dompet crypto sebagai wadah berperan dalam tantangan untuk membuktikan dan menganalisis objek digital yang tersimpan di smartphone. Penelitian ini berfokus pada penemuan artefak digital dari perangkat smartphone berdasarkan fakta atau informasi yang diperoleh dari instruksi smartphone. Untuk menemukan bukti digital dari aplikasi dompet cryptocurrency smartphone menggunakan metode DFRWS dan alat oksigen forensik. Berdasarkan hasil penelitian, diperoleh beberapa aktivitas transaksi dompet cryptocurrency tokocrypto. Informasi yang terdapat pada transaksi deposit fiat, penarikan fiat, penarikan crypto, dan penjualan crypto serta beberapa label tidak terdapat pada beberapa transaksi yaitu jenis transaksi, Order Id, Txid, dan alamat wallet.Cryptocurrency adalah teknologi sistem kriptografi yang bertujuan untuk mengamankan dan mengatur otoritas dengan menggunakan sistem desentralisasi untuk mengelola pengeluaran unit baru, mencatat transaksi, dan memberikan jaminan keamanan yang tidak dapat diduplikasi atau ditiru. Oleh karena itu, tidak diragukan lagi bahwa penjahat juga telah menggunakan Bitcoin dalam aktivitas ilegal seperti menerima pembayaran dalam kasus pemerasan online, membayar obat-obatan terlarang, insiden ransomware, mendanai terorisme, transaksi di pasar darknet, dan pencucian uang. Kejahatan yang dilakukan dengan menggunakan dompet crypto sebagai wadah berperan dalam tantangan untuk membuktikan dan menganalisis objek digital yang tersimpan di smartphone. Penelitian ini berfokus pada penemuan artefak digital dari perangkat smartphone berdasarkan fakta atau informasi yang diperoleh dari instruksi smartphone. Untuk menemukan bukti digital dari aplikasi dompet cryptocurrency smartphone menggunakan metode DFRWS dan alat oksigen forensik. Berdasarkan hasil penelitian, diperoleh beberapa aktivitas transaksi dompet cryptocurrency tokocrypto. Informasi yang terdapat pada transaksi deposit fiat, penarikan fiat, penarikan crypto, dan penjualan crypto serta beberapa label tidak terdapat pada beberapa transaksi yaitu jenis transaksi, Order Id, Txid, dan alamat wallet.
Purwono Purwono, Pramesti Dewi, Safar Kurniawan Dwi
Manipulasi data kesehatan memicu keresahan masyarakat dan menurunkan tingkat kepercayaan terhadap langkah antisipatif yang dilakukan pemerintah Indonesia. Teknologi Blockchain menjadi salah satu solusi untuk mencegah data kesehatan yang berpotensi untuk dimanipulasi. Smart contract adalah protokol yang berjalan di jaringan blockchain. Metode ini mengikat suatu kesepakatan antara beberapa pihak dalam suatu perjanjian. Data kesehatan ini dapat dilindungi dari pihak internal dengan membuat kontrak cerdas antara dokter, pasien, dan pengelola website. Data diagnosis yang dibuat oleh dokter baru adalah valid jika pasien setuju. Administrator hanya dapat mengakses data jika disetujui oleh dokter dan pasien. Pengujian keamanan dilakukan melalui serangan injeksi SQL. Sistem yang belum menerapkan kontrak pintar dapat dikompromikan melalui uji injeksi muatan, sedangkan sistem yang telah menerapkan kontrak pintar hanya dapat memecahkan kueri login. Pengujian manipulasi data 10 kali setelah login berhasil menunjukkan bahwa data yang telah disimpan tidak dapat diubah karena memerlukan kontrak pintar
Transformasi digital menjadi tren global yang telah mengubah cara bisnis dan pemerintahan di seluruh dunia. Di Indonesia, pemerintah dan sektor swasta sedang mempercepat transformasi digital dengan mengadopsi teknologi blockchain sebagai solusi untuk meningkatkan keamanan data dalam operasi sehari-hari. Beberapa proyek blockchain di Indonesia telah dilakukan, seperti verifikasi dan validasi sertifikat pendidikan, penyimpanan data medis, dan sistem pembayaran. Namun, implementasi teknologi blockchain di Indonesia masih menghadapi beberapa tantangan, seperti regulasi yang belum jelas, infrastruktur yang masih terbatas, dan kurangnya pemahaman tentang teknologi blockchain. Oleh karena itu, diperlukan dukungan dari semua pihak untuk mempercepat adopsi teknologi blockchain di Indonesia. Penelitian dan pengembangan lebih lanjut harus dilakukan untuk mengoptimalkan potensi teknologi blockchain dan mempercepat transformasi digital di Indonesia.
Blockchain technology is a major innovation that has swept through global supply chains recently. Blockchain technology has received immense attention in the supply chain industry due to its promising capabilities. This study was conducted to evaluate the potential capabilities of blockchain technology, which are highly relevant to the supply chain industry. To improve the understanding of the effect of blockchain on the supply chain, this research focuses on two crucial aspects of supply chain management, namely, supply chain capabilities and flexibility. The research procures measuring items for blockchain characteristics, supply chain capabilities, and flexibility through a questionnaire, the previous literature, and interviews conducted with industry experts. Through the use of statistical analysis, this study identifies the relationship between the above variables. The effect of blockchain on each variable is examined using a simple linear regression model. The findings disclose that blockchain technology has generated a notable impact on the supply chain capabilities and supply chain flexibility of firms. This makes blockchain technology highly essential for firms to generate a competitive advantage in the market and develop a new set of capabilities ahead of their competitors.
Bitcoin is one of the digital payments that is currently booming, fast delivery makes bitcoin in great demand by many people, currently there are many digital currency exchanges that can be used, one of the well-known ones in Indonesia, namely Indodax. Indodax is a cryptocurrency exchange, not only an exchange, Indodax also provides a chat room containing investors' opinions. Opinions contained in the Indodax chat room can be used to determine whether comments are positive, neutral or negative, so that it can be an investor's decision to sell or buy bitcoin using sentiment analysis. The sentiment analysis process begins with collecting data using an instant data scraper on the Indodax website, data preprcoessing, labeling using vader lexicon, TF-IDF as word weighting, data splitting, naïve Bayes algorithm and support vector machine, feature selection xgboost and gradient boosting, model evaluation with confusion matrix, then comparing the results of the two algorithms. Based on the tests that have been carried out, naïve bayes obtained the best accuracy value of 70.7%, naïve bayes combined with XGBoost obtained the best accuracy value of 86.6%, while the Support vector machine obtained the best accuracy 86.1%, support vector machine combined with gradient boosting obtained the best accuracy value of 88%. Based on these results the use of feature selection can increase the accuracy value of the algorithm.
Dalam Kaidah fiqh ada kaidah hukum dasar segala perbuatan ialah boleh kecuali ada dalil yang mengharamkan. Pada prinsipnya keberadaan bitcoin sebagai mata uang virtual diperbolehkan, karena telah diterima oleh berbagai kalangan masyarakat, tetapi persetujuan, legalitas serta pengakuan pemerintah harus dilihat sebagai hak dan kewajiban pemerintah. Hal ini Termasuk masalah penerbitan mata uang bitcoin, guna menghindari kemungkinan kemadharatan yang mungkin terjadi. Dalam kenyataannya, perdagangan Bitcoin saat ini lebih banyak digunakan sebagai spekulasi sehingga terdapat unsur gharar dan maisir yang terkandung dalamnya akad batil dan unsur yang dilarang oleh prinsip ajaran Islam. Menggunakan Bitcoin sebagai sarana investasi sangat spekulasi dan berisiko. Jika mengacu kepada alasan pengharaman riba maka ada riba dalam transaksi bitcoi yaitu berkaitan dengan pertukaran yang disyaratkan taqaabudh serta tamaatsul.Penggunaan Bitcoin juga terlihat dalam motode penolakan terhadap madharat, dengan ketidakjelasan dan mengandung unsur gharar dan maysir, terutaman legitimasi dari pemerintah yang tidak jelas mengenai penggunaan bitcoin, maka akan menyebabkan dampak negative yang sangat besar misalnya penyalah gunaan dana untuk kejahatan seperti tindak pidana terorisme dan Money Laundering. Oleh karena itu mencegah madharat leih diutamakan daripada mendadatangkan manfaat.Penelitian ini menggunakan pendekatan penelitian kualitatif deskriptif. Jenis penelitian yang digunakan adalah penelitian kepustakaan (Library Research). yakni dengan menelaah artikel, buku dan laman website untuk memperoleh data, teori dan konsep yang berkaitan dengan penelitian ini. In the Rules of fiqh there is a basic legal rule that all actions are permissible unless there is an argument that forbids it. In principle, the existence of bitcoin as a virtual currency is permissible, because it has been accepted by various groups of people, but government approval, legality and recognition must be seen as rights and obligations of the government. This includes the issue of issuing bitcoin currency, in order to avoid possible harm that might occur. In reality, Bitcoin trading is currently mostly used as speculation so that there are elements of gharar and maisir which are contained in vanity contracts and elements prohibited by Islamic principles. Using Bitcoin as an investment vehicle is highly speculative and risky. Referring to the reasons for prohibiting usury, there is usury in bitcoin transactions, namely related to the exchange required by taqaabudh and tamaatsul. The use of Bitcoin is also seen in the method of rejecting madharat, with ambiguity and containing elements of gharar and maysir, especially legitimacy from the government which is not clear regarding the use bitcoin, it will cause enormous negative impacts, for example the misuse of funds for crimes such as terrorism and money laundering. Therefore preventing harm is prioritized over bringing benefits. This research uses a descriptive qualitative research approach. The type of research used is library research (Library Research). namely by examining articles, books and website pages to obtain data, theories and concepts related to this research.
As the world is advancing into a more digitalized version of itself, people's needs and luxuries are evolving with it.People are gravitating towards online shopping rather than visiting shops physically.In e-commerce, most of the interactions between the buyer and seller occur through an online medium.So, it is essential to have a secure form of interaction between them.This project aims to make a secure interaction between the buyer and seller.The owner who owns the product and the buyer who sells the product both have the unique encrypted id, which will contain the whole transaction detail.The owner who owns the product that can add the product to the blockchain and the buyer who wants to buy has to use his/her encrypted buyer id which is shown on the website to buy the product.When the transaction has been performed using an Ethereum currency the transaction hash is generated which is secure (encrypted) such that if anyone tries to decrypt it is not possible.This project involves the use of smart contracts where it refreshes the encrypted ids on the last transaction and no second transaction id from the same buyer is the same as the first transaction.
The title of this study is to analyze the effect of cryptocurrency returns and cryptocurrency volume on the stock price indices of Indonesia, Singapore and Thailand. This research was conducted using the panel data regression method by combining cross section data with time series data using Eviews software. This study uses cryptocurrency returns and volumes in a weekly period from 1 January 2018 to 31 December 2021 for 48 weeks for each country with a total of 144 data. The results of this study indicate that cryptocurrency returns have a significant positive effect on the stock price indexes of Indonesia, Singapore, and Thailand. and cryptocurrency volume has a significant positive effect on the stock price indices of Indonesia, Singapore and Thailand.
Muhammad Rizky Nasution, Isfenti Sadalia, Nisrul Irawati
This study uses research variables such as Trading Volume, Market Capitalization, S&P 500 Index, World Oil Price, Gold Price on Bitcoin Returns. The data source in this study is through internet media with the sites https://coinmarketcap.com/, https://finance.yahoo.com/, and other sites that support this research. The data used in this study are time series, and the target population for the data sample is 1,096 (3 years x 365) daily report data. The data were collected from January 1, 2020, to December 31, 2022, through the release of daily bitcoin transaction reports. Time series data analysis using Engel Granger's Error Correction Model is the method employed (ECM). The analysis tool used is the Econometric Views (Eviews) which is one of the computer econometric program. The results of this study where trading volume has a positive and insignificant effect on bitcoin returns. The impact of market capitalisation on bitcoin returns is both favorable and significant. Returns on bitcoin are positively and significantly impacted by S&P 500. The returns on bitcoin are negatively and insignificantly impacted by the price of world oil. Returns on bitcoin are positively and negligibly impacted by the gold price.