 I put the YouTube live stream link in the chat, so that is live, so whenever you'd like to go, I get things started, feel free, and I'll be here on mute, but feel free to take it away. Can we talk to Marina for a second? Okay, I'm here. Can we start? I'd like to start my presentation and start. Okay, I'd like to say a few words. First of all, thank you Marina and thank you Mark, Ivan and George, for being with us tonight. It wasn't a long time ago at Mitap's Hyper Leisure Group, mainly because of this situation, but for the past year. We'll try to talk a little bit about Hyper Leisure. Marina, Ivan and George, Mark are from the company. I'm going to talk to Marina for a moment. Ford? Okay, and today I'd like to present my decision for the power blockchain, which has its own practical use in supply chains. Of course, all the time, say, in chat, Zoom and Ivan saw the streaming, the questions came up well, so we can finally sum them up. So Marina, take your time. Thank you very much. Can you see my screen? Can we see it? Okay, great, so we can start. Good afternoon, good evening. Welcome to our presentation. Thank you Hyper Leisure Community in Serbia for the invitation, as well as all of you who are present here. This is the first time I've explained our solution to technology in Russian, and it was very exciting because of that. Don't forget to think about the mistakes and how it works. We already had a little introduction, but we'll talk again about blockchain technology in the context of this technology, but also about the limitations of technology itself. That is how a rich blockchain can contribute to the revolution in the management of the system. You've already introduced us to each other, but briefly I'll repeat myself. I'm Marina Rachević. I'm a founder of the company, because there is no founder. The name of the company is Surge, which means growth and development. Today we will introduce solutions to these companies. I work with human resources and business development in our company, or with human resources and development partners. Tonight we have Ivan Marinčević, Beckett developer, Marco Arambasic, Puls Tak developer and George Jović from Q&A. Thank you for joining us. Before we move on to the solution, I'll tell you something briefly about our company. Surge is an innovative startup company founded in 2018 in Italy, precisely in Bologna. The company is Italian, but it is very international, very effective and flexible, number 17. The components of the company live in different parts of Europe. We communicate remotely via Slack. We assist our clients from various programs without any problems. We are aware that the company has been doing this in a new way. The pandemic has not negatively affected our business. We want our employees to work with the responsible, self-employed, professional figures who are under pressure and who have great experience in smart working, because after the pandemic it is easy to work from home and it is not the same. Our focus is on enterprise solutions for the company, which is based on blockchain technology. To build our solutions, we use avant-garde technology and our product software. It has been in use for two years. What we can say at the end is that we are grateful for the support of our investors. These are Jellify and Azimut. First, Jellify is an incubator for the company startup in Italy, and second, it is an investment platform. As I said, everything is very clear here and we can move on to the next presentation. We will get to know each other a little better with the concept of supply chain. As the name of this event says, our solution is related to supply chain management and the process of supply chain management. Supply chain management is, in other words, the management of the business or the management of the production. The process of planning, production and control of all activities in the supply chain includes the transfer of physical goods and services needed to produce the products that are made on the market in order to prevent the end users. There are many problems with supply chain management. I will tell you about these problems. First, there is less communication. There is less communication with foreign partners in the supply chain. Second, there is insufficient storage of personal goals in the company and their IT strategies and capabilities, including and bad social mobility. For example, it often happens that the director of the company simply does not see any solution for supply chain as necessary and does not need to go into such a solution. Third problem, which in essence is the result of, let's say, such a lack of capacity, a person who is qualified for supply and the need for quiet analysis of the supply chain. This can be, for example, a head of supply chain, a supply chain manager, a certain figure that is subject to quality production or possibly someone who is subject to quality control. So, these people do not have the opportunity to come to all certain data or to increase the process in the supply chain production, in order to coordinate all those companies that are connected to the supply chain. As we can see on the slide, the supply chain systems are all complex. In terms of control activity and the use of a number of documents, certificates and certificates, they confirm that the production is satisfactory in certain conditions and technical standards and the right order. This is also a burden for companies that have been added to the supply chain from various countries. We know that most of them are from Cirobina and half of the production comes from far away, from China, from India, and so on. So, on the slide, we can see that, as I have already mentioned, on the one hand, we have all the more complex supply chains in the system. There are no direct manufacturers, suppliers, suppliers, suppliers. Their supply chains are abandoned. That is, in particular forces, because all companies have their own IT systems, in this way, they cannot provide data and that cannot be done safely. And also, as we can see, we see the blockchain technology that comes with its characteristics. It is presented in some way in the promise of the future, because this technology is based on the principle of security. The ledger in which data can be recorded and cannot be changed. That is, how did they explain it to me? It can be changed because it is written changes. And the solution is shared. I mean, there is a first time in the history of the possibility that the ecosystem, in which different sources of information can access the entire database. It is a great part. You will join me. And now we will also see how the investors have contributed to this technology. I was not a good mathematician, but Google has found out how much trillions, so trillions are 18-0. And until 2030, the ledger will be invested $ 3.1 trillion in blockchain technology. That is a huge opportunity to contribute in this area of technology, in the economy. Again, a bit of evil, a bit of statistics. And then Gartner. In 2018, I know that it is a bit of an old picture, but this data is still accurate and relative. A large number of companies are able to enter the initial phase. There are a lot of projects that start, but as we can see on the right side of the slide, you can see that something like Pilot Project and Pool Live Production, we can see that very, very small companies and very small projects have managed to reach the final stage. Why? The first reason is the connection between blockchain technology and blockchain technology. Blockchain is a sport. It cannot process a large number of data. The second reason is that blockchain, as they say, blockchain is not a soul of life. Which would mean that if that solution could work, it would need the consent of all or most of the participants in the project. And the third reason is that there is not a single blockchain that cannot be used if there is no application on it. And when we are talking about a solution for supply chain, it needs some knowledge, including the business processes that are involved in the operation of companies that work together. Otherwise, nothing can work. And many technological companies do not have the knowledge of this field. Okay, I would now ask you if everything was clear if you have something to ask me, if you want something to comment freely on my position. If not, we can move on. I remind you that we will have 15 minutes for questions. If you can write in the chat. We will talk about them later. Now that we have explained what supply chain is, and a little bit about the difficulties in the implementation of the solution on the blockchain, we can move on to our point of view. What does SUCH do? SUCH allows companies that are connected to the chain to work in a better, efficient way. Not through mail, PDFs, paper documentation and so on, but by changing their data and data through a system that is safe and convenient. In this way, we think that our company allows companies to connect with the blockchain and to use the potential of their technologies. In the ecosystem that is made by those actors in production, there is no one who is identified as the owner of the data. Every company is the owner of their own data and it can affect which of those data they want to share with other actors, and which one is responsible for themselves. And the great advantage of SUCH is the possibility for small companies to participate in the project without large investments. Because we know that big companies have big budgets, a lot of money is invested in digitalization and in increasing their IT systems. While small companies are not able to do that because they have some old systems, some different, use some different systems and they are dangerous. What we can achieve with our system is a detailed analysis of the process of production, the confirmation of the production of the product and the implementation of it at the same place, all the testimonies and documents that are needed. What is the result of this new way of creating, of this new way of sharing data? The first result is significantly changing the handbooking of data, of the time and of the human city. The second result is faster than passing the product on the market. For example, if you create a new product, middle-class companies exchange technical, technical, what is it called, tables, technical data and in this process, there are some effects to be omitted. What is better, what is faster, the operation of the product will start in the market. The second example is the example of export. If our products wait for the breast or at least for the milk because it doesn't have enough paper and we do not have a way to access those certificates through that document, of course, that affects the efficiency production of products on the market. The purchase of this product is accelerated. And of course, why the whole solution? Why not one PLM, not one system of management not in a state where it is possible to manage this kind of data in a certain way in a certain system? Okay, I would like to explain to you even better how this works. Let's take a look at the example of the company Caring Giver, which is now our biggest customer. Caring Giver belongs to the Caring Group. It's basically a name that we don't say anything about, but then when we hear about brands, other brands that are in the group, it will be clear to us what the family is doing, so to speak. They contain luxury brands, such as Gucci, Pomelato, Aleksandar Mikuin, Ibsa Loran, Botte Gavenetta and others. And the group Caring is our customer, Caring Giver, who is a designer and distributor of all the brands that Caring has. They have several years of collection. Their clients are optically made, and their products are of course very luxurious, valuable, mainly with the tag Made in Italy, which is already a kind of brand by itself. What we managed to do for our clients, Caring Iwer, is to map four levels of their business. In the technical system, we have established a manufacturer, that is, a company that produces research for Caring Iwer, a manufacturer of soches, a manufacturer of frames, of metal components, as well as their suppliers and, if necessary, suppliers and suppliers. All up to individual syrups. Again, an example from this real-life situation. For example, Caring Iwer was not able to have information about the soches that are mounted on the frames of their soches. In this way, we will be able to see all the components that make their development. And what we see is that the final user can have a look at the information of the product, and the overall mechanism that is naturally collected by a single container. These solutions are completely different content that proves the originality of the product, as well as some hash put in the blockchain ledger some information or some evidence on that one way. I will finish my presentation with the last slide, which is the final user for the manufacturer, for that enterprise suite. What are, let's say, the advantages of using this sin in the first place is the location of all the information. It is what we call one-stop shop, or, simply put, a single place where you can find all the possible information. This is an incredible advantage of companies because they have a deep knowledge of the product, that it is possible to work with professional partners because each aspect is based on trust and proven data. In this way, it is possible to have a completely transparent collaboration communication between the professional ethics of the quality of the product and the evidence that the company uses recycled materials or less amount of prior resources, for example, less water, electricity coming from solar panels and so on. Because to be a grid, to be eco-friendly, today is no longer just fashion, it is a way to attract investors but not the most important, it is a great advantage of time. I will now give a word to Ivan and I will further explain why we use blockchain and why hyperlake. Thank you very much. Let's continue with the presentation from the technological side that may interest you. And then I will jump here. I'm sorry. Nothing. Later, Ivan will explain the details of blockchain. I will briefly go through the whole solution. From the technological aspect and how we created the architecture of our solution of our software, I will start talking about blockchain so that we can tell you later what Ivan will tell you. As a brain about our solution, our software, when we mention that we are working on blockchain, everyone is asking what is the use for cryptocurrencies, for Bitcoin, for some biggest public market in the world. When we say that we use for some other things, the solution is unique. That's why Hyperledger Fabric, which allows us to make a private network with different assets that we can later use in our system. And of course we use Hyperledger Fabric Prusa. Now, when we have a private network of blockchain, is it enough to provide us everything that users ask for from us? No. That's why we had to make a solution called Front. So that it won't be forgotten. Front doesn't represent the Frontend part. But it's the Frontend part, the user interface that helps users. So that they have what they don't do with some business logic that they need. It is as part of Front. Front presents a group of applications and features that our clients can use. Here are notifications, reporting, caching, user mapping, of course, blockchain integration so that we can communicate data with the blockchain and identity management. Of course, in addition to our solution and our client, we use some more technology as a guide for our code, library, configuration, this web application that we use in the cloud, we use Amazon as a web service. We also use OAuth 2 and of course key management to ensure all this. Each front that is, each company gets one instance that can be used, that is independent of all and that can be used in further work, maybe further. Thank you. Now we will go through a list of technologies that we use in our software, that is with our whole system. When I already mentioned frontend part, I did not write Angular, a whole group of backend solutions, backend applications that we have written in the public, we use Spring Framework, and a chain code that will be a little closer to the written in the public later. An interesting thing that we use is Redis that allows easy synchronization between a library, configuration between GitHub and our frontend solution, so it is enough to write a new configuration, create a new GitHub tag and simply in real time, set a new configuration in our application. I already mentioned this, I use GitHub as a database, we use NoSQL, MongoDB I will talk a little later about this ultra cache for project management, which is very important that we follow what it does and what needs to be done. We use Gira platform that is integrated with GitHub, which means for every bug we follow what is changed in the code in the library configuration to fix it or fix it. All these applications are our whole solution implemented through containers, we use Docker and to automate deployment and management of those containers, we use Kubernetes and for the configuration we use Helm. This may not be important, I already talked about this, now I would like to give you a little more detail about the functionality that this frontend solution has to secure that it is important, we have to make sure that it is secure. Now we have a couple of problems, we have some communication between the frontend and the blockchain, we have a client that uses it, we have more security and we also have to identify the user on our system, we use this Auto2, it is enough for a client to rely on their Microsoft app and if our group is in trouble, it will be identified on our system using Microsoft Dictionary for this thing. Notifications are also an important aspect of each of these systems, that we have not a client and if a client goes to another, for example, in our case, he or she needs to know that he or she can use it, to have it in the system, that there is no system notification, he or she would have to call it whatever, and now nothing about this which is futuristic, it would not make sense, what we have done so far, so we have a system notification that of course communicates which is, in fact, it serves the blockchain, so when a transaction is made, it has a blockchain that needs to be identified, it will take the event that was broadcasted by the blockchain, and send it to the client who needs it. We have two types of notifications, that is email and web notifications. It reaches notifications like email and web notifications, on Facebook, Instagram and on other websites. Reporting for our client is important, we also want to see what they are doing, what different notifications are, we want to see all the data, so it is not enough to just talk about it on the content, they need some possibility to give the data to the skin, or use it as an Excel document in this form. Caching is also very important in our system where we try to speed up the transfer of data between the blockchain and the client. That is, to constantly call the blockchain to send us the data we need, to spread the data and keep the data in our database. Of course, that creates some problems, how later, if we add some new data to the transaction, we write in the blockchain, how later we synchronize the applications, we need to use some broker, for example, that was not in the list of the technology we use. Field Data Mapping we also come out with this possibility in the middle of the client where we want to add some of our products to the internal reference, which will be able to use in our system to be able to request and so on, and to be independent of some other manufacturer, that is, that we cannot target someone fast. Of course, that is blockchain integration, so that nothing is impossible, we have to communicate with the blockchain. Identity Management, I have already talked about it, and this user and machine interface would not address that, and now I would give a word to Ivan, who will explain a little better, and now we will work with the blockchain. Thank you, Marco. I hope you hear me, the same kind of good news and why we use blockchain, in this case Hyperledger, that is Hyperledger Fabric, for various other solutions that are on the blockchain, which are public, that is, for example, Kuzemoliterion, it is a public blockchain, and it was possible to access that blockchain, it was possible to be in the network, and it was possible to see all the data, I mean, I cannot see all the data, it is not public, and because of that, it is very suitable for this example of use case with geopravellant for production. In that way, that is also increased security, I can't even start, and they are so well aware of what we know, which users are in the network. Apart from that, and the high level of privacy, apart from that, each system in Hyperledger has a public ledger, that is, data that is publicly available to all in the system, it can also use channels, or so-called private ledgers, part of the data can be secreted from individual participants in the system. We use both public and private ledgers, but also we have our hybrid solutions, because sometimes, even if the public ledger needs some data from that public ledger do not show the system to everyone. As for the logic, it is contained in smart contracts or smart contracts, I know that you all know what it is, it is a part of the code that automatically occurs if it is determined to be satisfied. That part of the code actually represents the business logic of our system. So, if we have some applications that want to communicate with blockchain, they cannot do it automatically, but they have to through that business logic, through chain code or smart contracts. As for ledgers, it represents blockchain, that is, data that is made by blockchain, from Word State and Tracection Log. Tracection Log is a group of all transactions, a group of all data written by blockchain, while Word State represents the present, the present state. In Hyper Ledger Fabric, it offers two solutions for Word State, as a database, it is CodegedDB and LevelDB. In our system we use LevelDB and it is shown in some way much faster. The problem with CodegedDB, which actually provides much greater possibilities for testing, is that it is difficult to index tests that have any or statement. In the end it is easier with LevelDB to read all the data in the library, than to make a more complex test with CodegedDB. That problem is faster than blockchain, on the one hand it guarantees the integrity of the data, but it has a big problem faster. We tried to also internally I think that Mark already mentioned with our UltraCache system. Every time when we are in some way there is a transaction, when the event is broadcasted we send a special event that we do and then we broadcast further and try that event in that event to cache on the blockchain and transfer it to some cache, whether Redis or Db. In that way we tried to collect data from the blockchain when we want to collect some data, we do not directly collect data from the blockchain, it takes a long time and a lot of time to make a replica of the current state of the blockchain in a database with this case Hyperledger Fabric, in our case with a lot of debate and that's in the product for some time and it was very successful and very useful. That's what the Hyperledger Fabric is about, if there are some questions you can ask. Now I would like to say a little about the demo. That's a new system that we have, that is the system for fixing documents, that is the expansion of our system with fixed documents. That system allows everything that is possible and the usual system with fixed documents, except that we connected it to the blockchain. We have all the documents that we use, we have something to do, we have associated it with the assets on the blockchain. With this data we can follow the documents and have a drink with some places that I don't like, I don't like, I don't like or some other place. You have more information on the slide. That's all from me and that's what I want to say that Jozha can continue. Thank you, Marko. That's all for now. Thank you for your time. I will briefly introduce our user interface and some important functionalities and solutions that we offer to our clients. I just want to explain the slide. As our colleagues mentioned before, our blockchain product is used in LANs with a demo. We will take one of our most important clients, Caring Giver, a company that deals with design and distribution of the users. It is connected with its own companies that work on the production and their suppliers that do the LANs. All of these companies are part of our software that allows them to communicate and share data related to the production process. In that way and the way it is defined by business activities. We see the login function on the first slide. We note that all companies have certain faces related to the manipulation of our software. Before that, the login function and login on the software. On the next slide we see one of the user interfaces. As we can see on the left there are different sections that need different functionalities. We see the example of the data that is manipulated in a particular section that the user chooses. Some of the most important sections that almost every instance and every company has prepare and manage sections. Prepare section allows the user to initially bring data that is related to its production, or the designer or the caring company where the user brings all the characteristics related to the designer's knowledge from the URC code dimension types of sources that want a lot of material and so on. After that we note the type of data on this section the first validation of the data is related to business activities. After the data is shown as correct implementation logic they can be processed in the manage section. In the manage section there is additional data but in relation to what is already mentioned in the blockchain. Some of the companies don't want to carry the same records in the blockchain, some don't want the same URC code on this section. After the data is checked they can be carried in the blockchain. After a successful description of the data in the blockchain the designer has a lot of information. We will see in a few seconds to see how it works. We will see in a few seconds how it works. Great. Great. We were talking about processing and design. Currently there are three manufacturers who are working on the final production of the blockchain and they have companies that are processing the material they don't need for the production. Great. Some of the important functionalities that we implemented are mainly filtering, because the data and the manipulation we have more options of filtering so that the user has what is possible in the blockchain. Great. I would just like to ask the participants if you can to turn off the microphone because we hear some noise from behind. Thank you very much. On the next slide we can see a very important functionality that allows users to configure their dashboard or to change the number of columns so that it is easier for them to manipulate and to perform different processes that are possible in our solution. On the next slide there is a command called a function. During some processes it is necessary to connect it to different sections. It is possible with this function where the user can get a drop-down list of data that is not found on the section and connect them with data in the current dashboard. On the next slide thank you very much. Next slide is about the characteristics of the product on the technology that is being produced by the material. Our solution is the command of the documentation as well as the certification of the material that depends on different legal regulations and standards of quality of the country in which the company is located. This is possible because it is one of the manufacturer of the company and the company itself that completes the certification of the product and the material. At the end we can see a complete catalog of all the designs that are at the end coming to the end of the production process where they are shown almost absolutely all the data as well as the documentation related to certain designs. Of course there is no the same show in all the data so let's say carrying on top of that can have a view of the data related to its design while the manufacturer of the material has a view of the designs that are connected with the material and not with the competitors. My colleagues mentioned the most important goal of this kind of delivery is that the renominated manufacturers and their companies have a certain guarantee of quality and of course the development of the pacificate. I would like to add that regarding the testing of the software so in addition to the unit tests we publish manual testing and test cases in the test trail and the bugs run in between. That would be all I would like to thank my colleague for his attention and the last part we left for your question so if you are interested in what you are going to ask we will work with you. I have a question about the chain code How much do you understand and use the public for the chain code? Yes, we use the public 11. Have you used any other languages or have you been using it since the beginning? I think we have used the public script. Good. You are satisfied with the public with the chain code and the public it works well and as far as I know there are no plans to change anything on that subject. Yes. Maybe I will make a general question do you technically see the difference between the language in the sense of the chain code Golang, JavaScript how do you predict it or does it work It is hard to say that I did not start that project I did not choose the language I did not try to work in other languages but I believe that some languages have their advantages when they use the code. We also have a chat about the progress. I saw a question from Bogdan Thank you. Do every adder have their notes that are included in the consensus? No. For example, this consortium which is made in the area of Kering Eiver has six codes because some smaller companies share codes. The reason is practical because you can do it and nothing is lost. It is not necessary that every company has a code. I see the next question I see that it is shown here and almost done. Is it the only function or could it be that, for example, repromaterials are similar to them? I do not know what repromaterials are if you want me to explain but the answer that I can give is that our product can be used in the business industry, food, automotive, pharmacology. The business industry is the business industry and why is it the business industry? Because mainly companies that we call cello, the main manufacturer are the ones who move the whole initiative. So that is the reason why we produce. Of course, we can be material that the product is not ready in the same way to gather information. I can now move on. I have a few more questions because I see that this is not in the chat. When we are talking about Bogdan, let's talk about Bogdan. Okay, I will go back to the question. This is my bullet, my bullet. Okay, the question is that this supply chain was not known how to make sure that each participant writes the correct data. Is there any control in that direction? Controls exist in two ways. First is I can write the data with the sources if I am the company that adds sources. But the same data and the product, or the semi-product, verifies the company that is doing the editing of those sources on the frame. Okay, so there is already double security. We are not interested to give false data because someone will check it. In general, every product has to pass some kind of test. For example, on the market, it has to be tested through drop-ball test. It is a metal bullet that falls from a certain height on the spring. And if the spring does not crack, that means that that product has a certain quality that is enough for the export. So there are more ways to do it. I have answered the question from Bogdan. Just to fill in the marina with the testing stage. We automatically do not prepare all the data on the blockchain, but they pass as a test, as a validation. So we have a certain phase that is valid. Then it is prepared on the blockchain. The truth is that many other initiatives are not all with the blockchain so transparent. If there is a seller, there will be a supplier who says, I'm sorry, but I don't want to give you detailed data about why there is something you want to hide. Maybe it's not true that animal food is very poisonous or that you use the blockchain or something like that. In a different way, it's not transparent or open. We can answer that. I'm interested in your system that you made. Can it replace a system that uses a service or a post or like an alert that helps them in everything? It can serve because it can make an asset of the data that can save the blockchain and use it when the user wants to use it. For example, post, send, they want to have data about the name, the name, the status, and so on. If you receive notifications on the phone or on the computer, can you choose to get your information from you? With one click you can choose the institution that comes to the asset, the package of information that is stored on the blockchain. There is a project that is related to the future. Maybe every user can decide how to access the information. For example, if you see the settings, you can see what you are paying for on which application. And so it could be done by a strong manager to decide if I want to allow my data to be for shopping or any institution to come to the data. It is very interesting. Our solution can be used as a bridge. Because we have a great connection with the legacy systems of the company. So in that way, many blockchains do not have a lot of solutions. So, as I mentioned, it is possible to use our technology as a technology for strengthening the bridge between some institutions, and some other actors in that ecosystem that they want to create. Is that their opinion to say operative in that sense? It seems that we do not use any blockchain that has transactions with a certain price. So transactions do not have a price. Of course, it increases the quality and security of the user data. For example, what happened in Italy last year, when the pandemic began, the state promised some 600 euros as a social help to all those freelancers who were not able to work at that time. The system was too complicated. And what happened was that users, when they tried to fill some modules, could see the data of other users. The data came out so spontaneously and was opened on their system, on that social of the Italian system. So yes, it would certainly increase in size. For example, the European Union has invested a lot in such projects and everything will be more. I would like to say that the governance of the European Union is going to use blockchain for those user data, for private data, for sensitive data. So that's basically the biggest advantage that we offer to GDPR compliance in that sense. Yes, absolutely, but it also has other advantages. Of course. Let me ask you a question. Does anyone want to ask something? Are you brave? Were we brave? Please, ask us. But until someone doesn't agree, can the user, for example, set a few levels when they are already given the question? Now, for example, I don't know, if there are some bases, for example, the name of the winter address, if he wants to then, for example, the second level are some other types of data. Bravo, Nikola. Great question. Absolutely, yes, and it's definitely based on that, based on four levels. How? The rules that are written directly in the blockchain, that is, only the director of the company can see certain things, only the person who is in control of the quality can see their prices. So, first of all, thank you to the rules, as we call them, business rules and rules, criteria that we, we have written in the blockchain, we can create even more security data and determine the level of data until a certain person can come in the company, or a certain institution, or a certain company. Why is that very good? We decide how much that solution will grow horizontally and vertically, that is, how much more we can add, add, add, add, to include, so that the scalability is easier in that way and how deep we want to map that supply chain. So, until which detail information we want to enter, so yes, that is actually one of the main characteristics that helps, that allows to function the system. Thank you very much. Great question. So, if I want to change the supply chain for something, I will only remove access to my data but I can access it to someone else. Absolutely. That is the first question that they ask us, because it is not that easy with the legal side to form it or to formulate the legal connection. So, that part is needed and it is needed in some way just to punish. What they ask us is, okay, but in the case that it is no longer my addition of what is wrong, it can still be seen, no, we simply decide how we want to expand that supply chain or to simply limit it. That is, to say, the system and the blockchain. I do not know if I understood the question well and maybe I will be able to help Ivan Marko and George in answering this question. I did not understand. Do you think, Bogdan, that the data that are in that side manage, that are still in that walkie-talkie under the same signs, that they are still not definitively stored in the blockchain ledger, do you think that it does not go immediately all in the blockchain, but is ready in the classic database. They are ready to do that. After the data is loaded and after someone is good to be loaded or how it is going, then they are ready in the blockchain. Those data are part of the front, but basically they do not have any semantics. They are just who you fold. In the blockchain system then they have some harm. So what you have prepared from the data as that manage section, you can just see it. And to make a mistake? Yes. Bogdan, I hope we have managed to answer your question. If you want to make a mistake, this topic can be used to turn on the microphone and to tell us what you have. Okay, Andrea says, we do not have much interest in your experience. How much is the resources, how much is the price of the transaction, plus and minus. In terms of financing of the whole system, which is technology, greetings to all. Andrea, the main thing that I would like to tell you is that blockchain technology from the beginning is developed on two sides. One side is all the activity that is connected and the other side is solutions like ours that use the permission of blockchain technology. The other way that we can share in the blockchain is in the form of checking information. So mining and mining I think we are against mining which is a large amount of electric energy concept. It is better to explain to you Ivan, but our transactions do not have the price because they do not use the other blockchain technology that is based on crypto currencies. So there is no no big trouble with blockchain technology. There are more applications that are on blockchain technology. As for the question of resources Hyperledger is not a classic implementation of blockchain as for example bitcoin. In every way on bitcoin, a transaction is validated, you need to make a proof of work. I heard about mining to support processing power to make a transaction. In Hyperledger there is no such thing and you can configure how a transaction will be variable. The only resource that is a little more expensive is the complex and all the data is stored. All the stories. I do not know the exact database that you brought in the database A, you can rename the database B if you have only the database B and in blockchain if you have the database A and rename it in the database B you will have the database B but the database A will keep you. It is impossible to invent something that was in the blockchain. In that sense, I know more places a little more complex, but it has its advantages. Andreja on the question. Greetings to you. Interestingly, I am very strong. It depends on what is the project and what is the goal of the project. That is why this is much better. Okay, good. We have some more questions. We have Bogdan on the question. Bogdan on the question and one more thing. Bogdan is very important to me to answer your question. For every loop of the blockchain you have to go and verify. Who wants to answer? That is the business logic of a single system. You can make a system where you need to make a verification of the data you want to prepare and on the other hand maybe you don't have to. I think the goal is to say that you have to write the phases of the verification and the quality of the information that is written on the blockchain will be really high. So what happens there? On that side we have allowed users to not be able to write double information, not full information, information that are not accurate. For example, each product has a certain code and that code starts from 001. In the moment when the user writes at least 331, the system will remove it. Through the system, it can be massively applied to the document. We also worked on 30,000 data that were processed so that we really proved that we greatly increased the performance of the blockchain. The system automatically checks whether, for example, the photography of the product, whether it is connected with a certain code of that product, whether it is a true data that is related to the browser. It is a kind of verification, a kind of cleaning of the data that can be stored in the blockchain. For example, we run and we steal everything that is stored in the browser. So I think it makes absolutely sense. If we do not have more questions, we would like to thank you for your time, for your attention and presence. And after the second initiative Hyperledger Unity from Serbia. Also, Marina, thank you very much for this presentation. It was very interesting and thank you Ivan, George and Mark for presenting us. But this solution is always good to see how something looks in the production, rather than playing with a certain theory. If you have any more ideas for an online presentation on the group, freely post it. Thank you very much. Good afternoon. Let's greet you. Thank you, Marina. Greetings to all. Greetings.