The application of blockchain technology in e-certificates in the open journal system is needed to validate and distribute managed e-certificates in each journal issue. With tools in the form of conceptualized and managed blockcerts allows users to use and verify the authenticity of e-certificates that are closely linked to the blockchain. Observation on the open journal system and applied blockchain tools in the form of blockcerts as a place to issue e-certificates with guaranteed security so that e-certificates are verified as well as managed data. Issuance of e-certificates is still considered unsafe because it can be easily forged. Specifically, this study produced two benefits, namely: (1) Issuance of e-certificates in an open journal system is more verified, data is managed and there will not be duplications or even falsification of e-certificates. (2) The reputation of the open journal system is better with a sense of trust. This research uses library study method by implementing e-certificate in an open journal system with blockchain technology tools such as blockcerts. In order that the results of the e-certificate issuance go well and to avoid any crime that threatens the authenticity of the e-certificate, this blockchain is used to guarantee that the e-certificate is safe and not easily falsified, duplicated or even easily replaced by those not granted access rights. By using blockchain technology, the data collected will be well managed and not easily falsified.
There is no uncertainty that the chroma currency is very popular for the transaction information stored in the block of blocks. To initiate the importance of blocking, there is only one distributed ledger in which data is stored, since many of the centers in the blockchain network limit enough records for these records. This document proposes a decision-making framework based on innovation to create a secure, unjustifiable, accurate and transparent framework for voter privacy. In addition, it is voted and declared in this context that the race has a short period of time, since it is automatically registered in the table. This framework also gives society confidence in its legislation when applying this technique. In this framework, an administrator can add a candidate and a voter to the block. In different hands, a voter can log into the framework and then decide in favor of a candidate that the details of the vote should be stored in the block. In addition, each square in the blockchain innovation that relates to the previous square contains the hash of the previous square, and each square contains explicit data based on the square footage. The hub is connected by a peer network in this framework, with all the hubs in the block site network that have a complete duplicate block.
Ms. Taiyaba, Muhammad Azeem Akbar, Bushra Qureshi, Muhammad Shafiq · 6 authors
Vehicle to everything (V2X) is the new and revolutional phenomena of the recent era. In V2X environment, the data security of data and information is the most significant parameter, as the information is shared on the shared network. To secure the information in V2X environment; the blockchain technology can play a critical role as it consists of the powerful data encryption and decryption algorithms. To implement the characteristics of blockchain in V2X environment, the practitioners face various challenges. The key aim of this study is to develop a hypothetical framework that renders the impact of challenging factors on the implementation of blockchain in V2X paradigm. We have conducted systematic literature review approach and identified the 10 challenges that are critical to address for the successful implementation of blockchain technology in V2X network. We believe that the findings of this study serves as knowledge base for the researchers and practitioners to develop the effective strategies for the successful implementation of blockchain characteristics in V2X environment.
In view of Islamic law Ethereum as a digital asset that is traded in cyberspace.The value of cryptocurrency surges and fluctuates, it is influenced by buying and selling demand. Indodax exchange is an official digital asset site in Indonesia that trades more than 40 digital currencies.The purpose of this study is to analyze whether cryptocurrency is worthy of value as money having a certain value, and also seen from the Indonesian government through Bank Indonesia has issued regulation No. 16/8/PBI/2014, which explicitly prohibits the use of bitcoin, Ethereum and altcoin for use in financial transactions in cash. So that raises research questions how the cryptocurrency law in the form of coin ethereum in Islamic law. The results of this study explain ethereum has advantages and disadvantages. Among its advantages is that users can use exchanges or transactions without a third service (bank), and can be traded at merchandise stores.However, ethereum losses are more frequent, such as fluctuating values each time, not listed as commodities, not watched by the Financial Services Authority (OJK), they present elements of gharar (uncertainty) and maysir (gambling) or (betting), which are used for money laundering and purchase of illegal drugs.Keywords: Cryptocurrency, Ethereum, Digital asset
Abstrak Bitcoin adalah sebagai pionir dari cryptocurrency dan menjadi daya tarik bagi siapapun untuk bertransaksi. Studi ini bertujuan untuk mengetahui apakah ekonomi Bitcoin berpengaruh terhadap jumlah uang beredar Dolar Singapura dengan volatilitas Bitcoin. Penelitian menggunakan teori yang sudah ada dengan variabel yang berbeda. Data yang digunakan berupa penyedia transaksi Bitcoin, volatilitas Bitcoin, dan jumlah uang beredar di Singapura tahun 2016-2019. Teknik purposive random sampling yang digunakan dengan 42 data dari masing-masing variabel. Metode penelitian ini menggunakan asumsi klasik yang terdiri dari uji normalitas, uji multikolinearitas, uji autokorelasi, dan uji heteroskedastisitas. Metode penelitian yang digunakan dalam pengujian hipotesis adalah analisis regresi linear sederhana, regresi linear berganda, uji statistik t (parsial), dan analisis jalur. Hasil penelitian ini menunjukkan bahwa ekonomi Bitcoin berpengaruh negatif dan signifikan terhadap volatilitas Bitcoin, volatilitas Bitcoin berpengaruh positif dan tidak signifikan terhadap jumlah uang beredar Dolar Singapura, ekonomi Bitcoin berpengaruh positif dan signifikan terhadap jumlah uang beredar Dolar Singapura, serta ekonomi Bitcoin berpengaruh positif dan signifikan terhadap jumlah uang beredar Dolar Singapura. Kata kunci: ekonomi Bitcoin, volatilitas Bitcoin, jumlah uang beredar Abstract Bitcoin is a pioneer of cryptocurrency and attractive for anyone to trade. This study to determine the Bitcoin economy affects for the money supply of Singapore Dollar with Bitcoin volatility. The research used existing theories with different variables. The data used in the form of Bitcoin exchanges, Bitcoin volatility, and money supply in Singapore during period 2016-2019. Purposive random sampling technique used with 42 data. The research method used classical assumptions which consist of normality test, multicollinearity test, autocorrelation test, and heteroscedasticity test. The research method used in hypothesis testing is simple linear regression analysis, multiple linear regression analysis, t-test statistics (partial), and path analysis. The results of this research show that Bitcoin economy is negative impact and significant on Bitcoin volatility, Bitcoin volatility is positive impact and no significant on the money supply of Singapore Dollar, and Bitcoin economy is positive impact and significant on money supply of Singapore Dollar, and Bitcoin economy is positive impact and significant on the money supply of Singapore Dollar. Keywords: economy Bitcoin, volatility Bitcoin, money supply
I P S P Wardhana, Gede Rasben Dantes, Kadek Yota Ernanda Aryanto
Abstract The falsification and embezzlement of personal data are still found in several cases in the past year. The reason is personal data in physical form are easily manipulated and difficult to be distinguished from the original. The most detrimental impact is if a person’s personal data is used for credit application fraud in the banking industry. Implementation of blockchain technologies, one of which is Ethereum, allows the use of contracts as a rule that must be fulfilled by the parties involved. All stored transactions are perpetual (cannot be deleted or changed), easy to be audited, transparent, and distributed at each participating node. This study aimed to develop a smart contract for personal data transactions with a case study of credit submission at the Bank. The authors developed a trial application using the prototype method in the process of assessment. Assessment was done by black box testing method in the scope of the lab with 10 credit submission data to be transacted. It is resulting in all credit submission data can be transacted and stored in the smart contract. The interview resulted in an opinion that blockchain technology can be used to store personal data and submit credit submissions at the Bank. The results of the analysis on assessments and interviews conclude that blockchain technology can be used as a medium to store personal data and secure credit applications. For future research, testing transactions can be done on Testnet networks with changing several blocks of data.
Assistant professor of Information technology in SRM IST, Chennai, Tamil Nadu, India., R. Mythili*, Akkudalai Priyanka, Ruchika Prasad · 5 authors
It is necessary to keep the patient’s health history confidential as it attracts various attackers who can steal the patient’s valuable information and can lead to wrong medication which is dangerous for the patients. Healthcare using block chain provides security measures using various algorithms and one of them is consensus algorithm. Block chain is a secure gateway composed of decentralized ledger, when it comes to a specific grant of personalized access. Block chain plays a vital role when it comes to security. In Healthcare Block chain organizes the data so that transactions (i.e. Patient’s record) can be verified. Also, Block chain is decentralized ledger which is distributed in nature and has a vital role in securing the data and transactions. Block chain basically contains records in order and is arranged particularly in a block type structure.
Pemilihan Suara Secara Elektronis Menggunakan Sistem Terdesentralisasi Berbasis Blockchain Ethereum merupakan suatu sistem yang dibuat dalam bentuk aplikasi yang dapat digunakan dalam pemilihan umum. Hal ini dilakukan untuk menyelesaikan masalah yang dimiliki oleh sistem pemilihan suara secara elektronis yang konvensional dimana integritas data belum terjamin dan data hasil suara kemungkinan dapat dirubah oleh pihak tertentu. Masalah ini dapat diselesaikan dengan membuat sistem pemilihan suara secara elektronik yang menyimpan data hasil suara pada blockchain agar integritas data dapat terjamin. Pembuatan sistem ini dilakukan menggunakan bahasa Solidity, bahasa pemrograman yang sudah Turing Complete pada Ethereum. Source code yang dijalankan akan di kompilasi menjadi Bytecode yang kemudian dijalankan pada Ethereum Virtual Machine. Program yang dibuat tersebut kemudian akan di desentralisasi kan menggunakan Blockchain. Hasil nya adalah sistem Electronic Voting yang terdesentralisasi. Sistem ini dapat diakses melalui website https://pemilurt.herokuapp.com/. Abstract Electronic Voting Using Decentralised System Based On Ethereum’s Blockchain is a system made in the form of application used for Electronic Voting. This is done to solve the current problem on conventional electronic voting system where the integrity of the data can’t be ascertain and the result of the vote can be tampered malicious actors. To solve this problem, an electronic voting system will be built that store the data of election results on blockchain to ensure the integrity of the data. The creation of the system involves using the Solidity language, a Turing Complete programming language used on Ethereum. Source code that will be run will first need to be compiled into Bytecode, which will then in turn run on Ethereum Virtual Machine. The finished program will then be decentralised using Blockchain. The result will be a decentralised Electronic Voting system that can be accessed from the website https://pemilurt.herokuapp.com/.

 LoA or Letter of Acceptance is a statement received. LoA is usually used as a statement of scholarship acceptance or even journal acceptance. In addition, the current issuance of LoA is still conventional, using paper as the access medium. This is certainly inefficient. In addition, the issuance of LoAs that can be accessed through the website also has certain problems. Many parties doubt the security of the LoA issued through the website, whether confidentiality is really maintained or not. To solve this problem, e-LoA (electronic LoA) was implemented using blockchain technology on the Technopreneurship Journal website. With the use of blockchain technology on this website, LoA data cannot be changed, duplicated or deleted. So that it can improve security and support transparency in the issuance and access of LoA. e-LoA issued through the website also makes it easier for parties to access and download a verified LoA.
This research was conducted to analyze cryptocurrency volatility. Gold, Dollar Index, and Composite Stock Prices Index in the Indonesia Stock Exchange (IDX) variable are used as independent variables. The cryptocurrency objects in this study are Bitcoin and Ethereum which have the largest market capitalization. The data used in this study is from 1st January 2017 to 31st December 2019. This study uses GARCH analysis. The result of this study indicates that the volatility of Bitcoin and Ethereum is not influenced by other variables, but it is influenced by the prices of each Bitcoin and Ethereum at past prices. This shows that the cryptocurrency market is an inefficient market.
Astrid Novita Putri, Mochamad Hariadi, Adhi Dharma Wibawa
Abstract Indonesia is an agricultural country, and one of the regions is Semarang Regency which well known as chili producers. Unfortunately, common issues occurred such as the fluctuation of the stock price and chili, the low exchange values of farmers in prices because of the complicated flow distribution chain. Furthermore, chili is quickly decomposed, but the demand is high enough. The solutions are to predict the demand for supply chain management, to make payment transactions of agricultural needs of farmers by analyzing stocks, raw materials, price to the chain of distribution, also to build trade links among farmers, consumers and Semarang District Agriculture Service. This journal discussed the flow of supply chain and logistics. We recommend to use the latest technology called Hyperledger Blockchain and IOT so that they can make it easier to carry out the transaction process because it is simple, low cost, transparent, faster. It also has high data security, and simplify ecosystems can be easy to exchange information quickly through Hyperledger Blockchain transactions so that the potential of this technology can bring benefits to farmers and consumers by creating the construction of a trusted distribution network that will bring a data transparency solution so that it can become a suggestion for the Semarang District Agriculture Service.
N. Nasurudeen Ahamed, P. Karthikeyan, S. P. Anandaraj, R. Vignesh
Blockchain is a distributed open ledger that is used to record the transaction across many computers. Blockchain technology can be applied in any domain such as banking, healthcare, real estate, travel, food, and supply chain. Blockchain allows us to have a distributed peer to peer networks, so it provides security and privacy. Example: Bitcoin. To enhance the Supply chain management using in the blockchain using some unique tags (Example: RFID/NFC/QR Code) tags describe the information about products and track the products. This paper discusses the blockchain in supply chain management to eliminate the disadvantages of the supply chain in the life cycle. In order to provide the solution of supply chain management to using these unique tags to get all details for manufacturing date/expiry date, etc., from the manufacturer side so no can alter this tag for the manufacturer to build a trustworthy of wholesaler/retailer/consumer for using the special tags.
The e-voting system is one of the frameworks which decreases the percentage of abstention and to ensure the security against tampering of the votes, Blockchain is a distributed and decentralized ledger that is used to record the transactions in an efficient and verifiable manner. Blockchain plays an important role in the e-voting system which ensures the security of votes by preventing modification of data stored in blocks using the cryptographic technique. Aadhar integration to the e-voting system overcomes the duplication or tampering of votes. The proposed scheme provides the secured e-voting system by using biometric details and VID(Virtual ID) of voters obtained from the Aadhar database to cast the Vote and also using the digital signature as the key for the encryption of the votes inside the block.
Internet Traffic Analysis and Secure E-voting
Advanced Steganography and Watermarking Techniques

 The very rapid development of technology is currently causing a revolution digital and the era of technological disruption or known as industry 4.0. with the presence of this 4.0 industry occurred computer growth and record-keeping automation all fields. This allows every human job to be replaced by robots, causing changes in the trading system that was done directly can now be done online or also known as Marketplace. With trade conducted through the internet, the transaction process is carried out on a traditional or directly, is now turning to the digital transaction process through Internet. The transaction process carried out digitally requires accuracy, security, and good trust between seller and buyer. Management Customer Relations or better known as Customer Relationship Management (CRM) is one model that can be used in maintaining the relationship between the customer and the company. Blockchain technology is technology that is able to maintain the transaction process, to maintain management efficiency identity, tracking system implementation, identifying product authenticity, and synchronization recording data to all parties, is expected to increase trust and the relationship between the customer and the seller.
Mahadi Hasan Miraz, Mohamad Ghozali Hassan, Kamal Imran Mohd Sharif
Certain types of blockchains were made and developed for various purposes. Despite the development of cohort systems, the blockchain needs more development from the perspective of Malaysia. In addition, blockchain is the only cryptographic block currency that improves retail marketing. This study has critically analyzed the variables of the current research Framework of the blockchain implementation in retail market. Thus, this study aims to implement blockchain in retail market for increaseing customer benefits in order to improve the retail industrial supply chain activities. In order to achieve the main aim, this study comprises of two main phases, which are theorietical study, developemnt of proposed blockchain factors and its implementation. The blockchain experience of variables, blockchain management, blockchain transaction policy, blockchain adaption and implications were discussed gradually. Finally, we demonstrate the underlying theory, the theoretical framework and the hypotheses were discussed in detail.
Po Abas Sunarya, Untung Rahardja, Lusyani Sunarya, Marviola Hardini
The sophistication of education technology (edu-tech) from the perspective of the blockchain has not been well implemented, because so far the methods used in education are still centralized and tend to be any student data such as class schedules and student profiles can be falsified. So an edu-tech research was made that applied the blockchain to facilitate learning related to the industrial revolution 4.0 and was able to optimize the delivery of information that is currently still one-way. Although there are a number of benefits that have been felt about edu-tech, digital disruptions remain, many challenges related to information security and privacy. The presence of the blockchain in security work integrated with a smartphone will be able to optimize the existing security system, authentication, and information that has been distributed in relation to student profiles, which can be assured of their originality.
Our current banking system is based on a central server where every branch is connected to each other. If the server made any changes to the data of a branch then other branches get affected. In this system, Corruption can be easily occurred because of unauthorized access which is totally insecure in transaction systems. But, Blockchain is a secure system where the transactional history regarding crypto-currency cannot be modified or destructed. Since 2008, Blockchain has gained immense interest due to exclusion of third-party organization participation in monitoring of the transactions. Ethereum is a protocol which is based on Blockchain technology and has several benefits over other crypto-currency based system and is best suited for creating a secure lending system. Every Ethereum based system runs on 'Smart-Contracts' which are lines of code and makes the system automated. As the system gets automated, proper algorithms can make the system reliable and secure as each and every step of the system is maintained and executed by the algorithm inside the Smart-Contracts. Blockchain systems work with peer-to-peer networks and also uses a consensus algorithm that's why there is no possibility of data modification.
Abstract The current contract system that has been running in a supply chain is not necessarily going well. Particularly, this contract was attributed by unfairness distribution of margins in each stakeholder, which causes one of the stakeholders took place as disadvantaged ones. This challenges potentially overcame by industry 4.0 paradigm constructing a smart contract system based on blockchain technology. This study aims to analyze the task of each stakeholder to achieve a transparent smart contract system and design system for a transparent smart contract that is able to provide a fair and transparent contract for each stakeholder involved in the supply chain of “Gasol flour” industry. By the existence of a smart contract, each stakeholder visibly and determine what contracts to establish and to create with other parties a transparently. The relief method used in this research provides input in the form of features needed to make a contract system in the supply chain of “Gasol flour” industry. Furthermore, these features are selected to obtain an output in the form of contract items to display in the distributed smart contract system. The selected items are input to run IF-THEN logic on the smart contract system using the M5P Tree algorithm method. The main results of this study are to obtain features that have the most influence on a transparent smart contract system and the rule of the selected feature so that a system is able to provide a fair contract for each stakeholder established in the supply chain of “Gasol flour” industry.
Abstract. Investing is an activity to buy a batch of investment instrument for nowadays and in the future they will get greater profits. Generally, investments are differentiated into two investments are investments in financial assets and investments in real assets. Financial assets include gold investment and real assets include bitcoin. This research aims to know the return and risk of the greater profit investments between gold and bitcoin. This type of research is quantitative research. The sample in this study is the gold price of PT. Antam, TBK and the price of Bitcoin against Indonesian rupiah from July 2016 – June 2019. The method of collecting data through the documentation and the data source used is secondary data. Method of analysis data uses Independent sample t-test with used the help of SPSS 23 program.The results of this study show that there are difference in return and risk investment between gold and Bitcoin. The comparison of investment return between gold and Bitcoin has a significant value with t arithmetic value of-8.790 with sig value 0.000. While the comparison of investment risk between gold and Bitcoin has a significant value with t arithmetic value of-10.657 with a sig. value of 0.000. Keywords: Return, Risk, Investment Abstrak. Investasi merupakan kegiatan membeli sejumlah instrumen investasi saat ini dengan harap di masa yang akan datang mendapat keuntungan yang lebih besar. Secara umumnya investasi dibedakan menjadi dua yaitu investasi pada aset-aset finansial (financial assets) dan investasi pada aset-aset riil (real assets). Investasi pada emas termasuk pada investasi financial assets dan bitcoin termasuk pada real assets . Penelitian ini bertujuan untuk mengetahui perbandingan return dan risiko investasi diantara emas dan bitcoin. Jenis penelitian yaitu penelitian kuantitatif. Sampel dalam penelitian ini adalah harga beli emas pada PT. Antam, Tbk dan nilai bitcoin terhadap rupiah Indonesia periode Juli 2016 – Juni 2019. Metode pengumpulan data melalui dokumentasi dan sumber data yang digunakan yaitu data sekunder dari harga emas dan bitcoin. Teknik yang digunakan dengan analisis uji beda ( Independent Sample T-test ) dengan dengan bantuan program SPSS 23. Hasil penelitian ini menunjukan adanya perbedaan return dan risk investasi antara emas dan bitcoin. Perbandingan return investasi antara emas dan bitcoin memiliki nilai yang signifikan dengan nilai t-hitung sebesar -8,790 dengan sig. sebesar 0.000. Sedangkan perbandingan risk investasi antara emas dan bitcoin memiliki nilai yang signifikan dengan nilai t-hitung sebesar -10,657 dengan signifikasi sebesar 0.000. Kata kunci: Return, Risiko, Investasi
Abstra ct . This research aims to determine the return and risk comparison in investing for 24 months (2017-2018). The objects in this study are cryptocurrency (BTC, ETH, LTC, XMR, LSK, and STEEM) and Indonesian shares (ADHI, BBNI, GGRM, INTP, JSMR, and SRIL). The research methods used in this study are comparative descriptive using secondary data in the form of historical data. The comparative test conducted on this study was a non-parametric Kolmogorov-Smirnov Test. The result of this research is that there are significant differences in returns and risks in both of cryptocurrencies and stocks in Indonesia. The average of cryptocurrency return is 20.48% while the share is 1.2%. Furthermore, the average of cryptocurrency risk is 0.4158 while the share is 0.0773. If the standard deviation ignores each month, but overall with a total of 24 months, the value that obtained for the cryptocurrency is 0.6486 and the other side of the share is 0.0986. Keywords: Return, Risk, Cryptocurrency, and Shares Abstrak. Penelitian ini bertujuan untuk mengetahui perbandingan return dan risiko dalam berinvestasi selama 24 bulan (2017-2018). Objek pada penelitian ini adalah cryptocurrency (BTC, ETH, LTC, XMR, LSK, dan STEEM) dan saham di Indonesia (ADHI, BBNI, GGRM, INTP, JSMR, dan SRIL). Metode penelitian yang digunakan dalam penelitian ini adalah deskriptif komparatif dengan menggunakan data sekunder berupa data historis. Uji perbandingan yang dilakukan pada penelitian ini adalah non-parametrik Kolmogorov-Smirnov Test . Hasil dari penelitian ini adalah bahwa terdapat perbedaan yang signifikan pada return dan risiko pada cryptocurrency dan saham di Indonesia. Rata-rata return pada cryptocurrency adalah 20,48% sedangkan saham sebesar 1,2%. Selanjutnya, rata-rata risiko pada cryptocurrency adalah 0,4158 sedangkan saham 0,0773. Apabila standar deviasi mengabaikan setiap bulannya, melainkan secara keseluruhan dengan total 24 bulan, maka nilai yang didapatkan untuk cryptocurrency adalah 0,6486 dan disisi lain nilai saham adalah 0,0986. Kata kunci: Return , Risiko, Cryptocurrency , dan Saham
Abstract. At present all business activities are bound to contracts or agreements. A written contract has several weaknesses, the contract can be lost and damaged, it is not cost effective and one party can commit fraud. The solution for that is to use the smart contract Ethereum. Smart contract Ethereum is a computer protocol that functions to facilitate, verify, or enforce digital negotiations written through the program code. Smart contract works without going through a third party and has a credible transaction process so that it cannot be tracked or changed. But Blockchain technology is not suitable for storing large amounts of data and expensive costs, the authors combine IPFS technology on Ethereum Blockchain. So the Ethereum Blockchain only stores the hash of the file, then the hash of this file can be connected to the file on IPFS to access it. In this study a web-based DApp (Decentralized applications) system was built that implemented IPFS on the smart contract Ethereum. The final result of this study is a discussion of data integrity and Quality of Service (QoS) communication between IPFS nodes on the smart contract Ethereum as a reference for implementation of the company. With the results of the implementation it was found that the data integrity possessed by IPFS was very good by fulfilling aspects of information security and having Quality of Service with average throughput values of 56.41 Kbps, 65.81 Kbps and 79.68 Kbps, for average packet loss values of 1.92%, 1.58% and 1.06%, while the average value of delay is 24.79 ms, 25.87 ms and 17.30 ms with the average value of the Quality of Service index which is 3 which meets the Satisfying category based on THIPON standards. Keywords: Blockchain, Smart Contract Ethereum, IPFS, Data Integrity, Quality of Service (QoS)
Abstract. Smart contract is an agreement between two entities established in the program code. All Smart contract transactions are stored on the Blockchain. But storing large data on the Blockchain is expensive, so many developers are currently creating a DApp (Decentralized Application) that integrates IPFS on smart contract Ethereum. Files will be stored on IPFS while the Blockchain only stores hash files from IPFS to access them again. Blockchain & IPFS are distributed peer-to-peer technologies for storing and distributing digital data supported by the confidentiality, integrity and authenticity of the data. The study was conducted to measure memory usage to run the DApp web that integrates IPFS on smart contract Ethereum and find out the effect of the file size uploaded via the web DApp and the number of nodes connected in the network. The memory usage test results will be used as a standard for the memory capacity planning to implement a DApp web system that integrates IPFS on smart contract Ethereum in an organization. Based on the research result, to run a web DApp that integrates IPFS on a smart contract requires 774MB of memory. The result proves that IPFS is suitable for handling large files. The efficiency of DApp's web performance that integrates IPFS on the smart contract Ethereum are obtained by a small file size and a large number of nodes connected in a network. The smaller the file size, the less memory usage. The more nodes that are connected in the network, the less memory usage. Keywords: Decentralized Application, IPFS, Smart Contract Ethereum, Blockchain, Memory Usage.