Associated with the current development of the emergence of many technologies that have increased in the world, especially in industry, one of which is the blockchain which is a new technology that is undergoing drastic density, this technology has data that is difficult to manipulate so that the blockchain has data security very trusted, and every record of all the contents of the transaction data can be known from one server to another server so that both parties know each other what the activities are carried out. The recording of transactions in this blockchain technology is connected in one block that is secured directly by a computer network, the blockchain itself has several applications such as Cryptocurrency or can also be called digital currencies, and Smart Contracts. This Smart Contracts is an application owned by blockchain technology that carries out an agreement or digital agreement in the computer program code that is entrusted by both parties stored in the blockchain database, so that it cannot be changed by anyone or the help of other parties, then no longer needed entities that can be trusted in using Smart Contracts. These Smart Contracts help to process the exchange of money, shares and property. Currently there are many industries that use Smart Contracts, such as the business industry that records financial services, the health industry which records data on patient health history, even the insurance and government industries also use Smart Contracts, therefore the existence of Smart Contracts is useful to avoid an intermediary service so that a transaction process will be trtransparent.

Curug SMPN 1 is one of the state senior high schools in Tangerang regency, precisely in Curug district. The teacher absentee system in implementing learning has been running and is considered ineffective because it still has to record in books which are considered inefficient. To facilitate the need for teachers to record reports in books and to make it easier for supervisors, a web-based information system design was created. The method used is a prototype model using the help of an application from Adobe. With the prototype it is expected that the use of the WhatsApp service can be used to provide information to parents. The use of this prototype method is expected to be developed in other schools.

A certificate is a form of award that is obtained by someone after completing a competency test or certain learning. Certificates must be generated and stored in a safe and secure manner to prevent alteration of content or even falsification. Blockchain technology is a technology that allows secure storage processes at low costs. Security is guaranteed because everyone can take part in storing data with a distributed ledger. Based on the results of research and system design, it can be concluded that the process of making blockchain technology as a medium for issuing certificates and their validation can be made using Ethereum's program, namely Geth, and storing data using smart contracts issued on the blockchain network. The results of the reliability testing of the system show that the system has successfully processed 200 transactions in approximately 8 seconds. For scalability testing, it is estimated that 10 million blocks require a storage capacity of 22.6 GB to become a node or miner on this blockchain network.

A public blockchain simulation, which bears some resemblance to Bitcoin. All players are interconnected with several possibilities to form coin and block transactions and the power to get a taste of the consensus algorithm controlling transactions and blocks. A software medium that is based on blockchain games began using whiteboards to become web-based simulation games with various teaching scenarios. Contributive tool-based instruction with experience in blockchain concepts that can be used in the classroom as well as online. Along with this, simulations can give students the opportunity to experiment with all relevant blockchain operations like signing, creating transactions, building blocks, etc. This post was written to offer our firsthand experience teaching evolving blockchain technology to business and business information technology students at the undergraduate and graduate levels using newly built gamification teaching applications. This research is based on a design-based research methodology. We describe the process from identifying the problem, to designing the tool and demonstrating its implementation.

This research is a part of previous research that succeeded in producing business model architecture planning, the purpose of this study was to develop previous research using the measurement method of business model maturity as a proposed business model architecture planning concept. By taking the same case study theme as the Tiara Payung Putra (TPP) company. TPP is known as a distributor company in cooperation with Pertamina (Bulk LPG Freight and Filling Station). TPP's main business activity is distributing goods in the form of LPG to 76 bases spread across Balaraja district. The current condition of the business model architecture illustrates the business activities that exist in the TPP. The main problems that occur in TPP are not integrating external systems with internal business activities in the company, and lack of IT resource support. For this reason, the Business Process Maturity Model is needed as a benchmark, which can be proposed as a business architecture planning concept. The business process maturity model process is supported by data validation obtained through respondents, namely business stakeholders in TPP, the process for validating the data by distributing the Assessment questionnaire consisting of 8 Parts the Business Process Assessment model, and 3 Parts for IT Application Readiness Assessment. support of the Enterprise Architecture Planning (EAP) Framework method which focuses on the business model architecture domain. The architecture of the business model illustrates how TPP carries out business activities and functions to achieve its objectives. The results of this study produce the proposed business model architecture planning concept in the form of Business Model Maturity Level Measurement, the IS / IT architecture concept, and the Business Architecture Planning roadmap, which are beneficial for the Tiara Payung Putra (TPP) company for the business model architectural planning