Blockchain full course online free | Session 7 | MCAL Global

Comprehensive Blockchain Training – Master the Fundamentals and Beyond!

Description:

🚀 Ready to dive deep into the world of blockchain technology? 🌐 Join us for an immersive and comprehensive blockchain training that covers everything you need to know to become a blockchain expert!

🔍 Course Highlights:

Fundamentals of Blockchain: Understand the core concepts, principles, and components that make up blockchain technology.
Cryptocurrencies and Bitcoin: Explore the revolutionary impact of cryptocurrencies, with a focus on the pioneering digital currency, Bitcoin.
Smart Contracts and Ethereum: Delve into the world of smart contracts and decentralized applications (DApps) using the Ethereum platform.
Blockchain Security: Learn how to secure blockchain networks, prevent hacks, and understand the importance of cryptography.
Decentralized Finance (DeFi): Explore the latest trends in decentralized finance, including lending, staking, and yield farming.
Blockchain Use Cases: Discover real-world applications of blockchain in various industries such as finance, supply chain, healthcare, and more.
Blockchain Development: Gain hands-on experience with blockchain development tools, languages, and frameworks.
📚 Who is This Training For?

Aspiring Blockchain Developers
Entrepreneurs and Business Professionals
Students and Graduates Interested in Blockchain
Anyone Curious About the Future of Technology
🎓 Why Choose Our Blockchain Training?

Expert Instructors with Industry Experience
Practical Hands-On Exercises and Projects
Access to Cutting-Edge Tools and Resources
Certificate of Completion
👩‍💻 Get Ready to Transform Your Career!
Whether you’re a seasoned professional or just starting your journey in technology, our comprehensive blockchain training will equip you with the knowledge and skills needed to navigate the rapidly evolving blockchain landscape.

🔗 Enroll Now and Unlock the Potential of Blockchain!

Blockchain Certification Training

👉 Don’t forget to like, share, and subscribe for more valuable content on blockchain technology! 🚀 #BlockchainTraining #LearnBlockchain #BlockchainTechnology #CryptoEducation #TechSkills

📌 Connect With Us:

Visit our Website https://mcal.in/
Follow us on linkedIn: https://www.linkedin.com/company/mindmap-it-solution/
Facebook: https://www.facebook.com/MCALIndia
Twitter: https://twitter.com/MCALGlobal
https://www.instagram.com/mcalglobal2
📧 For Inquiries and Support, Contact Us at info@mcal.in

I think all are here here now right no B has not joined it so are we waiting for V you can give me one more a minute to  Vin if he doesn’t join you can probably   start he’s joining in 2 minutes  just I got AE message okay okay fine

So Kaka timeing what are we going to cover today yeah sure I mean yesterday uh Sunil uh  demonstrated you about I mean he mostly uh I   mean uh introduced you to the multichain uh  theoretically I mean all the U background  

Behind multi chain what is multi chain and uh  how uh actually multichain works and uh know it   solves your problems your custom problems  and how is it uh you know possible to use   multichain as a private blockchain I mean he  just introduced uh to all of you guys about  

These Concepts but uh today we are actually  going to see how we can use multi chain in   a private way so that we can uh use it for  our own use cases and are having to develop   our own private applications based on that so  today’s session will be completely practical  

I’ll be showing you guys how to set up  the multi chain uh how uh to configure   it how to play with the commands and how  to browse the uh multichain and all very good sure kak as saying yesterday that we can have  some time on coming weekend so can we go for  

Uh a any us case and after that designing  blockchain application and setting up all   togetherness private blockchain so okay before  going that so today it mean we will set up our   private blockchain then another blockchain and  then we will communicate between those uh yeah  

I mean today uh we’ll be using multichain  okay so in multichain you can create your   own assets I mean asset can be anything like uh  I mean uh your regular example of uh you know   Karnataka government’s land record uh on a multi  chain so how to implement that kind of use case  

We’ll be looking at that today I mean it will  uh be giving you a complete picture today how   basically blockchain can be used uh uh you know  for your custom use cases to solve your private uh  

Uh you know use cases and problems uh which will  be uh on the multichain platform okay yeah so the   application that I’ll be demonstrating today uh  is enough for uh to term it as a application on  

A blockchain because that is again built up on  top of the apis and all so we can uh you know   modify that uh same application as well or we can  build another one if we want or it will be like uh  

On your choice if you have some uh completely  different use case then you can design on top   of it but it’s like a vanilla application  built on top of multichain which will show   you how to you know create your own asset and  uh you know transfer that asset on a over the blockchain

Okay so as time being one more thing on test net  uh on that day after that I followed I created   my account and in fact 10 accounts I created I was  able to transfer money from one to another account  

In the same way suppose that some other person  is also creating some account on test net okay I   think so I should be able to send money to him too  yeah sure I mean any address on the test night you  

Can you’ll be able to send him okay yeah these  are like tokens I mean last time what we we uh   actually saw these are tokens on top of ethereum  so uh if your token is uh you know published  

On the testnet and you know the address of the  recipient to whom you want to send some tokens   in a similar way that we saw last time you can  uh enter his address and send some uh amount to

Him okay I was thinking that all the accounts  are only on my computer on the testet I mean   you can see it on Robin Network right so robin.  ether scan. shows you that address live on the  

Test net so that’s a live address on the test  Network and one more thing related to that on   Smart contracts we created so what is the  actual use Case Of Swarm is so swarm s w RM  

Which is used for storage in ethereum okay so  I mean the one use case is uh a currency okay   uh storage is uh I mean something that you can  uh if you know the key value storage okay and  

Uh basically record management in that case you  can use it as you know it’s a kind of I mean uh   the similar concept is there in today’s session as  well it is called streams on multichain so I’ll be  

Showing how exactly streams are useful for uh as  a database I would like to say uh simple you know   time series database on top of blockchain I mean  I we will be coming to those examples specifically  

In today’s session so it will be much clearer to  you guys okay you mean the storage will not be   the part of blockchain itself but it will be saved  somewhere else uh storage I would say uh see your  

Contract has uh some storage associ associated  with it okay so when your contract is published   I mean you have your uh uh State variables in  it and these State variables can be like of any  

Size I mean it depends on you how long the string  you define in a state variable and how uh big you   can you know fit a string uh in a contract so so  all these values I mean when you’re transferring  

Something or whenever you uh executing some uh  transaction over the network so it requires some   storage for that I me to store those values and  uh while you know it is getting W so that kind   of storage is required so I think Will has  joined okay yeah hey Kaka good morning sorry  

I’m late hey no issues so I think we are good  to go now yeah we can go sorry about that yeah no okay guys so uh in today’s session we’ll  see we’ll be seeing like how to deploy private   blockchain using uh multichain so basically the  first step would be like setting the private  

Blockchain uh that means uh we have a multichain  project already which is open source by the   community and we’ll be you know setting up that  project on our uh machines and post that will be   plugging our you know custom use case on top of  that so then creating a blockchain means so when  

A multichain is installed multichain is basically  uh a platform I would say and on top of that I   mean in uh in that multi chain you have to create  a chain to start with so if you remember uh I had  

Talked to you about the Genesis blog on a chain  so chain only starts when there is at least one   block uh in that chain so then only you can  call it as a chain so creating that Genesis  

Block uh will say that you know your chain is  ready and that can be now you know extended to unlimited so after that once you create your  chain or your blockchain on IND CH uh then you  

Should be able to connect to your chain and  see how many blocks are there uh like what is   the current state how many users are uh users are  associated with that how many nodes are connected  

To your blockchain what is the permission given  to each and every node and uh how everyone is uh   you know uh connected to your uh chain because  blockchain is a peer-to-peer Network you don’t   have have a single server where you can say thaty  I have this server and all are connecting to this  

Server and these are my and this is my network in  peer toer it is not the case I mean uh everyone   can connect to you there is no server dependency  there is just a uh a network node required so  

Suppose uh I’m creating a chain and I am adding  s on on the network so what s I mean uh if you   have followed yesterday’s session from Sunil  so in multichain the only difference is that   I mean here you can control the permissions uh  on the network I mean uh the public blockchain  

Such as uh Bitcoin and ethereum you don’t  have any uh control lower who can join it   I mean anyone who downloads the blockchain can  simply become a node on on the network but in   the multichain you get uh a control dashboard  basically to give the rights to each and every  

Node specifically about the exact actions  that that node can do so we’ll be seeing that again uh then we’ll be running some commands to  get you all familiar with the uh different uh you   know the CLI commands offered by the multichain  uh V can you U mute your mic there is some noise

Coming yeah that’s fine then we’ll be seeing like uh how to create our own  custom asset uh on the CH that we’ll be creating   okay it can be anything for example we can create  a coin we can create a land record we can create  

Anything that is there in the real world like  we can create a say a diamond for Diamond uh is   a good example uh which in the diamond industry  what happens is that every stone is valuable even  

If it’s a very small entity it is valuable and  the history of that uh stone or the diamond uh   needs to be very carefully uh stored or managed  because anytime when a diamond comes for a sale  

It has to be traced right from its birth like  uh how much work has been done on it how much   what was the previous rate it was sold on its  carrot value and the other color value shap value  

Everything so that is one of the example like we  can push a diamond industry on the blockchain we   can uh create coins we can pull I mean we can push  land records on it like that I mean any customer  

Set we can create and manage out manage on the  multi chain then we’ll be seeing like transaction   metadata so whenever you uh push any transaction  when uh any uh transfer of the asset or anything   uh which is associated with the network so  on the multi-chain network so any change or  

Any modification for example uh suppose I want to  assign some permission to node two from node one   so suppose I’m the owner of the private blockchain  and I want to associate or you know disassociate   some uh access rights from the node to then  I have to push that as a transaction on the  

Network so these are like type of transactions  that flow on the network so we’ll be seeing those then uh we’ll be seeing streams so streams  uh if I don’t know if Sunil has covered it  

Yesterday but streams are like uh I mean it it  is kind of a database you can uh uh say which is   there on the blockchain and it it helps you to  just store key value uh storage uh if you know  

About the no SQL databases like mongod de so  all these are like key value storage databases   so even blockchain can offer the same thing and  the uh very important feature from the blockchain   is that it is remotable so uh all the key value  storage values in a Time series format for example  

Suppose uh you want to store uh stock prices on  the blockchain so what happens is for the stock   prices I mean there are only uh few entities who  can write these stock prices one is the exchange  

For example in case of India NSC and BC only can  write the values of the stock prices they are the   only Authority who can decide I mean who are uh  allowed to modify or you know write the values I  

Mean the right taxes for the those values are only  to them and others are just plain subscribers so   in that case uh your data you know uh gets post  like every second or you know you know half of a  

Second of the duration and it it will be like  endless uh uh time A Time series data of the   stock prices so we’ll be seeing how that can be  managed and uh you know implemented on the multi  

CH so that particular uh key value storage  provided by the multi chain is called as a stream and finally we’ll be seeing uh how round  drop in mining is uh actually executed on the M

Chain all right so what I have done is I  meant to uh make it very uh easy for you   guys is to set up multichain and uh uh start  with you know developing an application on top  

Of it I have created a Docker uh project for  this so my project is available at the first   URL that is mentioned here so I’ll be showing  what exactly is there in the project uh so to  

Use that project I mean you have to first  check out that geter I think it is already   checked out uh in the last session uh  so inside that I have created another   directory and uh where the docker project  is set so to use Docker obviously you have  

To install Docker first and configure it to  you know uh to get started on your machine   first if you’re using Windows and there is  a different procedure for Linux it is fairly simple all right uh then in the repo I created  a multichain directory uh and inside that I have  

Kept the do project after that you just have to  follow the readme.md of that directory and uh   all the steps are provided in that so we’ll  be going uh each and every step today uh in   Practical and I’ll be showing you how to you  know exactly start it and how to configure it  

How to you know uh check the applications and  the things that I’ve done in the do project   then uh there comes the CLI for the multi chain  so there is a good example of uh I mean how to  

Get started with multi chain so multi chain  itself sorry I’ve done a very good example   of the steps to get started with multi chain so  we’ll be using their own page uh just because it   is fairly simple and very uh interactive page  so whatever commands we need to fire whatever  

Steps we need to do so they have documented  very well and uh based on the uh uh steps I   mean we need some inputs at some steps which  are unique for each and everyone so I cannot  

Document like uh plain steps but those steps  should be like I mean those are some some of   the steps are like Dynamic where some values  are Dynamic so we’ll be seeing how this page   is helpful for us and finally I mean once  this session ends I mean you can go to the  

API reference from the multichain and uh see  how uh apps can be you know built on top of   it uh even if I’m showing uh uh an app in the  demo that is also built on the same apis so   you can figure out like what applications I  mean what application actually require from  

The blockchain to you know build your own use  case and uh your own functionalities in the application okay so let’s uh head with the live demo okay all right so this is the uh doer  project that I was talking about so this is  

My repo blockchain training and inside that  I created this new directory uh is the font   size uh clearly visible to you guys or  should I increase it well I’ll increase it okay so in the read me you can see uh all the

Steps so first you need to install Docker  uh on your host machine and uh then there   is fair simple steps so if you guys know  the docker I mean how exactly it works   and all that would be uh much better if to  understand this and otherwise if you don’t  

You can just uh you know follow simple  Docker tutorials uh and get understand   understanding of what I have done here so  I created two important files for a doer project uh so my first file is Docker file no  extension just uh named it as Docker file so  

In that I have to just say that from where I want  to you know build my image or the container uh so   I’ll be saying that from the UB to Z 16.04 image  uh will be my base image uh then I’ll be simply  

Running all the commands that I uh want to you  know install as a dependencies for my application   or exact application that I’m building uh  in the uh image so these are a few things   like basic lookas get and curl then WG and Nano  editor and everything that is required then I’ll  

Be installing a PCH to PHP and few dependencies  for the PHP then I’m setting the locals here okay   after that what I’m doing is I’m just uh creating  a directory called as OPD SL multi chain which is  

Actually mapped to my uh project route okay  so we’ll be seeing how this works I’ll be sh   the actual VM uh in which I you know created this  image so workd command is simply just saying that  

Where I want to execute next set of commands so  I’m just going in that directory what I’m saying   is that uh just simply fetch this uh package from  multi Chen which is multi Chen version 104 uh then   simply unpack it and set the work directory  to unpack folder and then simply move this  

You know binaries like multi Chen D multi Chen  CLI and multi Chen util to you know my bash uh directory okay first that uh I’ll be showing  you the application that I talked about like   an web application which is uh built on top  of multichain so I’ll be I I already have  

Installed Apache to so I’m just cloning  this uh multichain web demo from the get   repo again this is from multi chain and I’m  simply extracting it there in the web folder   of my apach to then there is something called  as multi chain Explorer so these are the steps  

Associated with with it it’s a python based  application so I’ll be uh installing first   all the dependencies then I’m fetching this  multichain Explorer project and finally they   setting it up using its own command so I’ll  be sharing this links from uh where this uh  

Project come comes from so multi these are  all from multi you can see multi chain web   demo and multi chain Explorer so these are  all provided by multi chain and again this   is uh multichain code okay so this is uh there  in my uh Docker file so any questions guys as of

Now so Kaka which language did you execute all  this uh queries uh yeah so yeah so this is a   Docker file so Docker has its own set of commands  uh you can use it in Docker file so this from run  

Maintainer and all these commands are from Docker  itself but uh after run I can run uh the plane   command that I’ll be usually running in my ugu  so you can see after R all my commands are for  

The are basically the Linux commands uh that  you generally can run in any uh you know ENT   environment so uh at last you you are running it  in Python to set it up in Python right MH that  

You can use the Python language yeah I mean you  can install so this Docker what actually Docker   creates it’s a virtual image for your application  but it will be uh it will be much uh similar to  

What we do uh when we create simple virtual  machines using virtual box and uh uh there is   another from Microsoft uh workstation or something  so uh what actually uh doer does is it creates the  

Same isolated environment but not as a you know a  complete uh VM so it will be on your host machine   uh but you don’t require like all the virtualized  environment for that so that is a beauty of Docker  

How quickly and uh how precisely it you know  creates a VM for you but uh it is simple a   process in your host machine and uh nothing like a  completely uh uh you know setup of virtual machine  

I would like to say okay so we’ll be seeing yeah  yeah the reason I was asking all this question   is like if I have to learn it uh start with the  language to uh execute so then should I be if I am  

On Java platform or if I’m on P so uh for both of  them it will work for any of the languages it will   work this doer file initially I have to go and  then um at the last command where you are running  

It python I have to run it in Java or wherever my  intended langu I mean you can host any programming   language application inside your Docker image  there is no limitation for that I mean uh you   can install all the dependencies like for Java  you need to have jdk and Tom Cat installed first  

And then you can deploy your War file of your you  know Java web application into the tonet so that   will also run okay sure thanks yeah so there is  another uh supporting file which would be like a  

Main file again for Docker so that is called as  Docker compose yml file so what this file does   is that uh this actually controls your Docker uh  containers so when this will be run uh the First  

Command which build the docker images uh done by  this Docker file after that whenever you run your   image suppose now you have built your image and it  is sealed all the dependencies are installed all   these softwares are installed po that what will  you do is you will be simply running your uh you  

Know uh Swit off uh image just to start it so this  uh file comes in picture so what it does is uh it   basically ask you uh like how many notes or how  many uh uh you know images that you want to create  

So that is listed under services so in the service  I would say get me a node one okay uh to build my   node just use my root directory suppose you have  checked out some application here some code here  

And you want to you know map it to the uh the  image so everything that is there in the multi   chain directory will be mapped to my image we’ll  be seeing how that works then you have the volumes  

Volumes is again like your current directory and  where exactly you want to map uh in the image so   I’ll be so inside my image I’ll be saying that  under op just create multi chain directory and  

Map everything from here to there then there is  a startup command uh you can pass to the uh image   so what I passed here is that uh we’ll be seeing  uh op mul start.sh so this start.sh is basically  

Here in my root directory this is s file with  execution permission and uh what I done in that   is I’m simply saying that when this image start uh  just start my just restart my my Apache to so that  

I can access the port application and after that  I’m just saying that tell Das and anything that   means just keep the uh terminal open so that uh  I can access it okay uh then there comes the port  

Mapping so what I’m saying is uh so this is host  and this is uh the container so from the container   P0 would be mapped to my host machines 8001 P so  whatever application running inside the container   so inside container I don’t have any desktop  installed so there is no browser to you know  

Browse my applications so what we usually do is  we just tunnel the ports from container to host   machine so on the host machine you can access uh  Port 8001 and whatever application running on Port   8 inside your container you can access it simply  similarly for these ports 2750 would be mapped to  

2751 on the Node one so this will build my node  one so I’m creating another node because we are   uh learning blockchain application so and it’s  distributed we need multiple nodes you can create   any number of nodes right here you can create  node 3 and you can give the same configurations  

And you can just you know start us as many nodes  as you wish to do okay so in the node two the only   difference is that since on my host machine it’s a  single machine uh my port 8001 is already bound to  

This node0 so what I’ll do is I’ll say that for  Noe 2 just map it to my 8002 okay and for again   for Note 2 uh 2750 is not to my 2752 so that  it will be uh so there will not be any overlap  

For the not sorry sorry for the ports and I can  differentiate between which node I’m accessing and   which node I’m looking at okay so Docker is very  interesting uh technology you can uh uh you know   kick start within a you know day or two because  it’s fairly simple and uh you know configurations  

Are also simple and easy to understand there is no  complexity uh as such if you know what is uh like   how virtualization works if or even if you don’t  know about it I you can just start with it and try  

To understand uh how exactly this uh environments  are getting created and how you see a completely   isolated uh environment for your application so  suppose uh I want to you know transfer my image  

Or I want to transfer or I want to share my image  with you guys so what I’ll do is I’ll simply uh   send you this two files these two files are enough  for you guys uh just to start the same environment  

That I bu that I built here on my my machine and  if you run this uh I mean uh this two files on   your machine it will be creating exactly similar  environment for you guys because everything is   uh configured in this file what needs to be  installed what versions you want to install  

You can configure each and everything each and  every piece of uh dependency for your application   and again your application is definitely  should be the same that uh I’m you know uh accessing so any doubts uh until this okay so so let’s start with  uh the actual practical of

Today okay so what I’ve done is uh I have  created one host machine here because I’m on   the Mac already Mac OS so I needed some uh P Linux  environment because I won’t uh uh bother my host  

Macw uh with all this because I anyway need some  pure Linux environment because in some cases Mac   has some uh you know different uh differences in  the command so that so I usually prefer uh Linux  

Programming and Mac just to you know keep my file  set all right so one Kaka one quick question so   this dock image will work on Windows as well right  yes yes it will be working on Windows as well same  

Okay okay thank you so on windows again uh I mean  you can simply run the same Docker file and Docker   compose file and it will create you know vux  environments for you guys noes with that okay  

So let’s see what is that so this is is my uh  directory I have Docker compose yml file Docker   file and then I have this uh read me files and  the start. file okay so the First Command that  

You need to run is Docker compos build so this  command will download all the dependencies uh   that we have defined in the docker file and it  will install it and it will do all the steps  

Right From First to end that we have defined in  the dock file so I have already run this command   uh just because it takes some time to download  and again the network uh band we is included in  

That so I just already run it so the next command  that I uh that we need to run is simply say Docker   compose up so now my images are built so how to  check if my images are built or not so there is a  

Command you can uh simply say Docker PS all okay  so you can see these are all the images that I   have built on my machine so uh even you also would  come to know what this images are once you know  

Build uh so on the final on the top you can see  that these are the latest images that I have built   so multichain node 2 and multichain node one so  these are the two images that are very latest uh  

Uh in my machine okay so if you want to see what  all images currently running so if you simply say   Docker PS it will show you the list of images  that are running so currently there is no image  

Actively running on my machine but images are  built and they are present I can run them anytime   okay so uh one more thing about uh Docker compose  the docker compose actually works based on your  

Directory okay so now this Docker compose file is  there in my M chain uh folder up okay so uh the   images that I have built are basically specific  to my directory okay suppose something goes  

Wrong and I just want to scrap this uh images and  start a new one so I can just copy the directory   just name it to something like multi Chen new  and this run again Docker compos it will build  

Fresh images for me so that’s how it works uh so  it keeps you isolated again with the directories   and that’s only for the docker compose because  Docker compos are specially designed for uh you   know directory specific projects so that you know  you can simply copy it and you know rename it to  

Some other directory name so that will create  another isolated Dage for you so if you see uh so this node one comes from my Docker  compos yml file so this node one okay and   there is node two again here so you will  see two images multichain is my directory  

Name and node one is my image name that I  have defined so similarly multi chore node   2 okay so my images are built so I just have  to Simply uh [Music] say Docker compos so what   would what it will do is it will start your  nodes or the images that are already created  

By the build command and now you will see  uh it is giving me output specific to my uh node okay so you can see node 2 hyph 1 again  node and this is node one hyph one so what  

Happens is that you can Define uh I mean there is  an advanced level of Docker again very can Define   uh number of workers for the docker image so you  can you know internally again create multiple   images or the workup processes for the docker  image so that is why you are seeing another  

Post fix here Note2 dore1 so right now I have  only one process inside that so it is saying   that simply underscore one for both the notes so  these are like Docker related uh things but I’m  

Just explaining just uh so that you guys are not  you know confused about it so we are having only   two noes the images running right now one is you  know showing in the yellow color and another one  

Is in slightly blue color and this output you  are seeing here is because I have written that   uh command there that is there in my start.sh  so when this is executed it is giving me a is  

It is giving me a message saying that Apache to  could not be Rel determine the Ser name because   I have not changed this is a simple warning from  the Apache that fully qualified domain name is  

Not so that is fine I can just simply access it  from the local domain name and this is because   the second command saying that anything is  notory because is definitely not so I just   kept it just to keep uh the terminal open okay  so now now just jump onto another tab here and  

Now just say dops now you will be seeing I’m  having two images of the containers running   so this is my uh multichain node one and this  is uh this one uh this is node one and this is  

Node 2 and we’ll be seeing all the mappings that  I have done so all the mappings in Docker compos   yl you can see it again here p T and Port  2750 is mapping here okay so my images are running so I listed all these useful commands  here again whatever are necessary for our  

Project so my images are running now but  how to access those uh nodes now I mean I   know that my nodes are running but how to go  inside that node and how to you know uh run  

Commands and how to check uh the application  so for that what you need to do is for node   one just copy the container ID from here and  simply say Docker excc command which has this   format and say I need to start with the bash  command The Bash program for the from this  

Particular image which is running already so  connect me so connect me to the bash okay so   now you are inside the uh image with the root  user okay and the directory that I’m landed   on is OPD / multichain which I had created  in the docker setup so now just check what  

Is there so here again you can see the same  thing my same project has come here and uh I   can see all my files here so similarly connect  to uh node 2 okay just go to node 2’s container ID and you are inside the note two so now how to  

Uh check the IP addresses  of this uh nodes so simply say so I can see the IP address for my node one is 17292 and for the second one I can see it is 172903 so that is fine  and and again just have a check whether I  

Can communicate between these noes because for  running multi-chain you need to be on the same   network or the reachable uh Network so let us  ping that guy from node 2 yeah and you are able to connect so right now you can see I’m into  completely isolated environment where my  

Host machine is different and I’m into  another image which is again a ubu image   but isolated one I have different IP  address I have all the uh everything   is different here I mean there is nothing  uh I mean I would like to say a Shar from  

Your host machine you have a completely  isolated environment like a fresh virtual   box virtual machine that’s the same thing but  this is from the doct so we are into node one now okay so uh after this what I’ll do is  I’ll start with the actual uh uh page which  

Is an official page by uh multigen which is  very very useful and uh well documented one   so so we’ll start with uh the steps that  I provided there anyway I have documented  

This on my R me file but uh we’ll see why this  is very useful okay so right now we are in the   node one and uh but there is nothing uh  I mean kick started here I mean to just  

Fresh node where my multi chain is installed  how it is installed because I have done that   from the uh Docker file already so if you see  I have already moved these commands to my uh   bash so let’s see whether it works or not so  before that let’s jump on to CLI command so  

CLI is multi chains uh command line interface  so let’s see whether it is available yes it is available okay so it is installed and ready  for use now so let’s follow the steps to uh   basically create a chain so or a blockchain I  would say so my platform is ready multichain  

Is ready uh but I have to kick start a  new blockchain okay so I would name my   uh new blockchain as say chain one and to  create that chain one you have to run this command see it will show you that uh your  blockchain has been created successfully and the  

Parameters file for the blockchain is located here  root sl. multichain chain one chain one is the   name of the chain that I’m giving here so if you  say chain X then chain X would come here so what  

Multichain does is that I mean uh Sunil might have  already told you that multi chain can run as name   already suggest what it is it can run multiple  chains or block chains at the same time on the  

Same platform so that’s the beauty of multichain  so I can create as many chains as I want and I can   simply name it accordingly okay so chain name is  unique so I have started chain one right now and  

What it says is that uh to generate the blockchain  I mean to generate the first uh Genesis block for   the blockchain just run this command I would  simply run it okay fine so what it says that

Uh okay so this gives me some information about  uh the platform that is multichain 104 this is   the protocol version and it has now started  the Genesis block Genesis block is found and   it says that other nodes can connect to this  node using this connection so if you see uh  

What this connection is all about this says that  multi chain D is a command for multi chain and   this is chain one and at theate the IP of my  node where I started it and the port number  

Okay so anyone uh in the network who wants to  connect to me uh just have to uh you know run   this command on his multi chain uh instance okay  so now you would say that uh in so again this is  

Become public anyone can join me but no this  is not the case it is just a connection string   but after that uh the administrator of the node  one I mean this Genesis or the root node has to  

Approve and give permissions to the uh node who is  trying to connect to me we’ll see that how that is done okay so we have run this two commands  for now so now uh I was saying that this  

Page is very useful because of this so now it  says that copy and paste the node address here   so let’s copy that so after that it will do  some useful things for us so let’s copy this  

From here okay so what it does is it creates  all the commands which are required for me uh   in the future based on my address okay now it  says that uh your blockchain is running on node  

One and uh so let’s connect this blockchain from  somewhere else so I have a note already running   yes I can connect from that so it says that  from the second server just uh copy this same  

Command and this is the same one that already  given by like uh this multi okay so I’m on Note two simply say just connect to this guy okay  what it says that uh retrieving blockchain   parameters from the seed which is the node  one okay blockchain successfully initialized  

That means now this node is attached to the  P top network of the chain one because I had   pointed chain one on this IP okay now it says  that uh please ask the blockchain admin or the  

User having activ activate uh permission uh to  let you connect to and uh uh a transact that   means uh I have initialized the blockchain I  got the parameters from the blockchain where   it is located and where is the port is but to  actually uh you know participate in that uh  

Blockchain or the uh that private Network I would  say because this is something that we are doing   on a private Network so this is not a public  network I uh I have exposed to on the internet  

This is this is something that I’m doing on my  interet okay or uh some Network which is owned   by me because I’m utilizing the network bandwidth  on all and I’ll be utilizing that for my custom   application Okay so now it says that uh provide  this commands to the uh admin of the blockchain  

That means the node one okay who has actually  kickstarted the chain one okay so it says that   this give him this commands to run and you will  be seeing there is some common thing here which  

Is this particular unique address okay so this  is a unique address of node 2 so what it is   saying that uh multichain CLI chain one Grant  con tax and then again Grant connect and send  

Receive access okay so uh now this guy cannot  run it because the uh this has to be run on the   actual uh root node okay so let’s copy these two  things these two things are not clear you multi  

One Grant after the testing that is not clear  here what does this represent yeah yeah so this   unique string uh is basically an address of the  uh node two okay you mean the IP versus Port that  

Is different not the address but the address on  the blockchain if you remember uh when you send   some ether to your friend address right this is  public key yeah so this is associated with this   public key uh and this is his public address on  the network on the blockchain network not the TCP

Network clear address of Home admin you mean  no no this is the uh no node two yeah because   I on the Node two I tried to connect to node  one and it says that it is initialize but we  

Have to pass these uh things to uh the owner of  the uh blockchain so that you will get access to   it okay okay fine so I’ll copy this things so  that means uh how this will be working uh in a  

Real world so you must be knowing a person or  an entity or an organization to whom you’re   connecting so suppose uh tomorrow uh you are  starting a blockchain so I should be knowing   you personally or I should be uh uh within your  organization so that I can send this thing hey  

Sunil just uh you know allow me to you know  participate in your blockchain got it so that’s   that’s how it is uh you know different from the  other blockchain which are public but this one   is uh totally private and secure so I’m just  running this uh commands on the Node one now so  

It says that it is done and it has given me the  transaction number as well okay okay the second command fine both of the things are  done so now I have access I mean the   node two is having access on chain  one because it started by node one

Okay so now that’s fine so now uh you should  be told uh told that it was uh successfully   initialized and you know uh so this is the  page that I was uh talking about so if you  

Just copy this even if you have already  run it but but just uh see how it uh you   know create some useful commands for you so  this actually replace this address from here   this text box and created a command for so  this we already run on the uh first server  

So that is fine so now try reconnecting again  from the second server okay so to connect to   the blockchain and become a part or become an  active participant uh at the time and start you  

Know mining and everything so what you have to  do is simply say so the chain one is again now   because I have initialized chain one which is  located on node one so this chain one is again  

Specific let start what says that uh it says  that uh the node is started okay the blockchain   parameters are retrieved and uh you know the  listening for the API request is on C this is  

This this this is something that I’ll show you  later and it says that no is so my node is now   connected to uh node 2 is now uh properly  connected with permissions to the node on blockchain all right so now before we uh  proceed let’s you know interact uh with  

The uh blockchain so uh I know that I have  allowed node 2 uh to connect to my blockchain   and is part of my network and everything okay  so just go to any server uh I mean any node  

Let’s run this on the let’s enter into the  CLI mode now so CLI mode is something that this is like a python shell if you know what  python shell is or what python command does  

Is inside I mean python shell you can run all the  python commands and you know you can simply write   your Python program as well so similarly uh there  are some specific commands to uh there are some   commands which are specifically from the multi  chain so to run those you have the CLI interface  

And you are now connect connected to your uh  node one because I run this on the uh node one   so there are some uh informational commands like  get info to check the information about your node  

So it will show you things like this like version  node version what is a protocol the chain name and   you can see uh because I’m connected to chain  one it is showing me specifically about the  

Chain one so this CLI you can CLI uh command is  specifically takes an argument as chain name so   if you have a chain X or chain y you can enter  it here and you’ll be seeing the information  

About the chain that you connected to so this  is my chain name okay protocol is again multi   chain this is a code number uh and there are  uh various parameters about this which are   specific to the multi chain so you can see all  what are all this on the you uh reference page  

So all these are very technical things but we’ll  be uh coming to the web interface as well so all   these are very technical information but U as  in when we enter into the web interface these  

Things are not uh you know needed to uh deep  dive into right now okay so we can uh check all   the permissions uh which are given to the chain  one so let’s see this permissions okay so here  

I can see what are the permissions given to so  you’ll be seeing one address which is repeated   in almost all of them but there are some entries  for uh second address there so this address you  

Seeing is basically the address of this self node  I mean this node one itself so the starter of the   uh multi chain has all the rights because he is  the I mean the father of the node so he has all  

The uh uh permissions and uh you know access  rights through that so this is the permission   type you can see so the mining uh permission  is given to me this is admin permission this is   activate permission this is connect permission  send receive issue and you can see these three  

Entries at the bottom are specifically for  the address which is you can validate and   see this is for the node two okay so when we had  actually run these commands so this permissions   were given to this guy which is my note to  so this way you can always browse what are  

The permissions given to guys and definitely  I mean by looking at this address you should   be able to determine who is this guy because you  have added it so you must be knowing it you have   you must have written somewhere uh in your you  know uh personal email or some you know Excel  

Sheet about this address mapping so when I say  this address you must be knowing that hey this   is some uh machine on my network I know that  so like that I mean the real world management   is up to you guys because the address on the  network does not identify anyone in the real

World okay so then there are multiple uh  commands like get new address so this will   create another uh address for you so how  this is done because yeah I mean uh on   on the network I can create multiple  addresses because uh I can that just  

A public key associated with my account so  it is simply like creating another account   on my not so that doesn’t matter we’ll  be saying this uh uh in the live uh web   application so let’s just uh jump to another  uh command like we can you know list all the

Addresses okay so this shows me my address so  I have only one address right now that’s fine   and this ISS that get the blockchain parameters  Associated and you know written in this particular   file this file is pretty much important file  for the blockchain so complete life cycle I  

Would like to say or the uh it basically  defines the you know the behavior and the   the attributes of your complete blockchain so  what are I mean we’ll be looking at this file   specifically into the editor but there is  a command for that which can show you the

Content yeah so yesterday uh if you guys  remember uh soil must have told you about   the uh few things from this file uh like the  difficulty and all then there is something   called as diversity level so all these uh  Things are Written here for example this  

One mining diversity so this comes into picture  uh uh for the round robin mining uh and this is   a complete different aspect we’ll be looking at  the end of this uh session so some uh parameters   which are very important from this file uh  we’ll be looking at this in the editor again  

But yeah I mean this is the file you can access  it from the file system and from the command as well okay then uh there is one more  command here like get PR info which   will show you all the connected nodes  to you right now so it says that yeah

Uh this ISS that this is uh the person  who is connected to me okay this is my   local address this is the local uh address  on the blockchain this is Network address I   mean the TCP Network address and this  is the blockchain address and this is  

The guy who connected to me so currently  uh in the array you can see this is Json   and uh it is an array So currently there  is one guy connected to me that is this

Person okay so I mean that’s how it is I mean  you can just uh you can anytime jump into the   CLI and uh see the information about your the  status of your blockchain so let’s jump on to  

The actual use case like now this is set up and  this is running but what is the use of this okay   so here comes the uh another thing uh in the  multi chain that is called as asset okay so  

Asset is something that uh is represented uh in  the data okay so asset means uh a data that is   I’m treating as an asset so it can be anything it  can be a coin it can be uh a land record it can be  

A file anything which is uh you know which I can  fit into a size of maximum allowed size is 64 MB   so so within 64 MB whatever you can fit uh will  be called as your asset so that is my asset so  

Let’s say that uh uh I would be creating uh let’s  take a simple example of uh again because we’ll   start from the coin and we’ll jump to the other  type of assets or things from the web interface okay so now it says that to issue uh  so so how this asset actually starts  

Okay so there is a permission  called as issue you might have   seen that when I showed you the  permissions uh list okay so in this you can see there is one yeah so this is the permission which  is called as the issue permission so issue  

Permission means that uh you have a permission  to issue an asset a new asset okay right so just   check the list permissions and in that  let’s see the issue permission okay so   it says that only one guy is having the issue  permission and that is me uh I mean that is  

The same node that’s fine so just copy this  address and uh paste it here now what it says   that now we’ll be creating an asset on this  node with some unit okay so for example I’m   creating uh say I’m creating a coin again  here a currency coin okay so just jump

Here suppose I want to create uh 1 million coins right and the denomination again okay so this is the quantity uh I’ll name it some  way so I would say that this is my lcx coin or I  

Can name it anything this is a string as I said  this can be a 64 MB maximum allowed string you   can pass it here uh uh and that can be your  you know that that you can treat as as your  

Asset for example uh I can say that this is uh so  uh coming to sunil’s uh know the Legacy example   so I can say that this is uh ABC apartment flat  A10 sorry a101 okay so so in your case when you  

Say that uh I want to create an application or  I want to put the land records on the blockchain   so in that case I would be saying that this is  the flat number a01 in ABC apartment okay and I  

Want to maintain that on the blockchain so just  create one quantity of it because obviously the   real flat would be one in the world and this  CD nomination would be again one so whenever   this is uh created that means we are creating  or we are issuing this flat or I mean we are  

Putting this flat on the blockchain for this  guy so this guy means I’m the owner right now   of this blockchain so once if I execute this one  so this will create one flat with this name and  

The owner will be this or the current holder of  this asset would be this guy and what about the   details where will we pass to BK yeah exactly  I can show you that in the web interface so in  

The command line we I mean I don’t have the  complete Json uh in hand right now to create   that okay so I’ll be showing you that in the web  interface so let’s simply go with the uh MCX coin again Kaka one question basic question  so when this Bitcoin would have been  

Started by Satoshi he would have done this  thing right exactly so when he kickstarted   Bitcoin he would have done this thing so  he would have created the coin called as   BTC okay here and this would be the  first address I mean definitely his  

Own address and uh the amount of coins that  he initially you know started okay thank okay so let’s create this asset so it  says that it is uh put on the network   and transaction number is there so my asset  is created now all right so now let’s see

Balances so now it shows that here are your  assets and uh this is the one asset that that   is there on the Chain right now which  is cmx and the quantity is this that is

Fine now uh let’s say uh I want to transfer  this asset to the uh person on the network or   the node on the network okay because that’s  uh why the blockchain is present to transact   okay so if you notice here this is already  an address of the second node okay this is  

This was the second node so this page actually  uh creates all these interactive commands for   you so that it goes very smooth so this is the  address of the second guy and it says that send  

Asset because since I’m the owner of this asset  and I’m running it on Note 2 it will execute say   would not be executing on the Node uh I mean the  other node because he doesn’t have any quantity  

Or any uh any asset Associated right now in his  balances okay so send uh just change this asset   one because we modified it here only so cmx is my  coin and say I’m just sending some 100 coins to  

The other guy it says it is on the network this  is your transaction IDE fine so now let’s again   check the balances and let’s see whether it is  executed or not yeah it is executed balance is  

Reflected okay so let’s see and check the whether  it is actually uh you know uh delivered to this   guy is is there um mean can connect through m mask  to these nodes uh no metamask is associated with  

Etherum platform right so that is Guy Type L  Bally from where we get yeah I’ll be showing   you that so when I’m talking like web interface in  my whole session I’m talking about that complete   interface which has all this I’m just showing you  these commands because uh if you want to develop  

An application in future okay so you yeah so you  must be knowing all these commands so which you   need to you know code in your application so  that you can communicate with the multi yeah   correct all these are available in the apis the  commands are same uh but just this is command  

Line interface and in other cases it will be rest  API okay so let’s see on the Node two whether I   have received it or not okay so jump on the uh  command line interface on the note to and see

Balances yeah so here it says that  I have 100 cmx coins in my balance F okay so this is again uh uh permission  command so this is saying that uh uh I   mean right now I have given the uh  permission send and receive to the  

Second guys so that is fine this is again  say that they granting the permission if   it if it gives you some Merit then Grant  this permission I mean in future suppose   permission is roked and I’m not able to  do that so I can just grant it again from

Here okay so you can again uh see what  are the transactions on my wallet using   this command that is list wallet transactions  okay so let’s run it on both the nodes first   on the Node two so no to there is only  one transaction as of now which is for  

The asset the named as cmx and the quantity  was 100 so that’s fine says that this was   transferred to my address which is same  my address and the incoming address for   this guy so this is node one who sent me this  100 coins so that’s fine so I’m able to see

Transactions and you can again run the same  command on the uh node one to see transaction   that I executed okay so here it says here it  will show you the same thing but this is minus  

Quantity that means it is deducted from uh my own  wallet uh asset was cmx and uh this is my address   and this was the address to whom I sent it so fine  everything is pretty much visible and transparent  

To the network and this uh I mean these commands  like list wallet transactions are publically   these are by default available to all the nodes  who are connected even if they don’t have the   right access or the right permissions they have  this read only permissions with them to see the

Transactions okay now I can again check the  metadata associated with uh uh the transaction   [Music] send with data command thing so this  was the thing I was talking about Sunil so I   can send an asset with a Json here okay if you  looking at this so this is uh Jon I can form  

Like in your case you said that what is the uh wi  number what is the address what is the PIN code   right so uh we’ll be coming to that part in the  web interface because uh in the command line it  

Is will not be clearly you know understandable  as now okay so now let’s come to uh something   called as streams so before jumping onto the  streams I think uh it’s time to jump on the  

Web interface because it is going too much on the  command line all right so we’ll jump on the web   interface right now okay so if you remember  I had configured uh the web interface that was here so in my Docker file if you see I’m  installing this Apache 2 so whenever I install  

Apach to the by default configuration is to  start on port0 so yeah so in Port 0 it will   start my uh apach default website which is  located at W HTML so inside that what what   I had done is I had installed this multichain  web demo application or the web app so this  

Is in so whenever I’m saying work directory in  the docker that means command after this would   be executed on this directory so get clone has  executed inside this that means I’ll be having uh   a directory inside I mean the web root which is  called as webchain web okay so let’s go to host  

Machine so this is my host machine so now if I see  I’ll open two tabs here just to show you what I’m doing okay so this 8001 is mapped to node one  sport dating okay and 8002 is mapped to node  

One node 2’s 40 that’s fine so inside that my  application is here multi chain web demo that’s   fine so I’m now able to see the uh multi chains  web interface right but if you notice let’s open  

It here again fine so I’m able to connect to  both the nodes web interface fine but there is   nothing here so why it is that because I have  not configured my web application to connect   to my uh chain instance okay so let’s do that  so there are steps I have already uh written

Here so right now we are running this  command on both the nodes and we are   at this step now so let’s go to node  first let’s fix the web interface or   let’s start the web interface on node one  first so remember this chain one uh is the

Uh yeah so this chain one is the name that I’ve  given to my uh chain so this is a dynamic just   remember about it so now let’s go to node one and  open the uh parameters file for the blockchain  

Chain one okay so I’m on Lo so exit from the C  now okay you are back to the BH and now let’s   open the parameters file okay so you will be  seeing all the information that I showed you in  

This CLI command as well so all the information  is here again so these are the uh parameters   for configuration of your blockchain and some  of the important one I’ll be showing you here   is you can see this is that anyone can connect  false anyone can send false anyone can receive  

False that means this is predefined configured as  a private blockchain okay because the permissions   uh now have to be given uh manually to each  and every node that is you know that I want   to include in my network so that’s how this is  private I mean in case of Bitcoin and ethereum  

These are kept open so anyone who is knowing  the address simply can join it or anyone who   knows network uh connection string can simply  join the beer toer Network even if I know the   one node in the network I can join them that  means I connected to whole network so but  

In multichain you have this uh reconfigured  thing because this is specifically uh created   for private blockchain so that’s why you can  see all the permissions are given as false by default Okay so then come down and uh we want to  select few things from here I want to note down  

Few things so in my step I have written that  just copy the RPC Port value for the default   RPC Port okay so from this you can see there  is something called as default RPC port and  

This is the so this is where my uh apis would be  hitting so right now my web interface is not able   to communicate with the uh blockchain instance  because I I mean the web interface does not  

Know where it is hosted the code is not known  to web interface so let’s uh copy this number 4258 all right now let’s open the uh multi chain.com  file here uh but before okay that’s fine F so this was uh the previous file was the  parameters file and this is uh configuration file  

For the and there are very limited things given  in the configuration file we’ll be seeing what is   inside that okay and it says that RPC user and RPC  password okay so RPC means remote procedure call   so if my application wants to communicate with  uh the uh multi instance I mean the application  

Should be you know knowing these credentials to  communicate with so it is very similar to uh like   the apis that we uh connect to like Google’s  apis or Amazon’s API so we get a access key   or uh some credential file to communicate with  or some access token so in a simpler way they  

Are they have given this username and password  so that’s fine so what we have to do here is uh   we just have to you know paste or and upend a new  entry here which is called as RPC port and uh RPC  

Code and the same code that is 4 to 58 here okay  and simply save this file and also copy the uh   the password in this file because we require  it in the next step so let’s close this file

Okay so we have done this we copy the uh RP  user uh and the password okay and now go to the web demo project that is present  in uh web rout so let’s let’s go to web

Root and you will be seeing I have already checked  out the web application here okay so if you see   the files of this web application this is plain  PHP application uh which we just saw it here okay  

So what they have done is they given some uh samp  uh sample configuration file so we have to uh the   example configuration file to something called as  config.txt so let’s do that CP config example to okay and then edit that new file all right so now you’ll be seeing

That what are the entries here so this is  the name of the chain that I want to or I   can just simply change to what exactly  the name that I’ve given that is chain   one and this is host my Local Host RPC C  is something that I have to replace here  

That is 42 58 and this username you will  be noticing that this is same this was the   same username there but the password that  I had copied I have to paste it here okay   I pasted the password so I’m done with this  configuration simply say save and exit okay

All right so I’m done with configuration  at least on node one so now let’s browse   the node one’s web demo project yeah and you  see that I’m seeing chain one now so let’s   open chain one all right so now I able to see  uh the web interface for my chain one okay so  

You’ll be saying this is node information  which says that this is change one version protocol could you go on second tab I mean on  the browser itself yeah because it will not   show just okay so on the multichain demo you  click after the config change and we get all  

This those data you show the corresponding PHP  file yeah PHP files are here I can just show it   all the detail from config file and then curing  from yeah I can just quickly show you that okay  

So this file that we are seeing here is okay I  this is a PHP application you can uh the link   is there you can anyway check that but if you  say I’ll just quickly open it and close say

This okay so it basically reads that configuration  from the uh config.txt file that we created and   based on that it communicates with the uh  blockchain apis that we saw part that part   I want to see after reading the config file what  it’s doing calling the rest API or exactly yeah  

Okay so I think I uh done on the Node one but  let’s do it on the Node two so that we’ll be   seeing the interaction on on the web interface  so let’s jump on the Noe two exit from the C okay uh let’s repat the same steps okay just

Okay so let’s go to [Music] the port yeah Port is  same that is fine sometimes the uh configurations   get uh you know created different uh but sometimes  you know they fine to have because it’s a machine  

Related code we are fine with it noes to have  same code there because it is only related   to you know web application and the blockchain  instance within the same machine so that’s fine   okay so let’s create this entry here of this  port equals to 4 to f8 and save it and close

It okay I forgot to copy the password  password is different yeah so let’s copy it now jump to application  and copy the config file so so here again the same [Music] application so let’s [Music] sort let’s place the password save

Close okay I’m done so now let’s open uh  we forgot something we just kep the name default so this is again regarding  the chain one that I’m connected okay now let’s go to tab two and see you got to  change one again here now you can differentiate  

These two notes can see the address Network  address is different see this is uh 0.2 and   this is 0.3 so you get the information uh how  many blocks are there how many PS are connected   okay so you will see that to this particular  node 03 is connected to it and this is his  

Handshake address handshake address means again  the same address on the blockchain the which is   associated with the public key and to node  two node one is connected which is 02 and   this is his address okay fine so I get some  basic information here this says that this is  

My address I can you know name it to my address  this is simple label nothing to worry about it my address so this is again goes into transaction  and uh once it is done we will be seeing it here  

So every uh data change or every uh you know piece  of data a change on the Node goes on the network   and that is again as a uh transactions that means  it has to be validated and uh the authenticity of  

The change that means uh if I’m modifying it  uh using my own private key so here comes the   private key in picture so since I’m modifying it  my private key will be used for that okay and uh  

All the nodes on the network will be validating  that transaction using my public key so since my   public key is public to everyone they can try to  decode that transaction and if it is decode if  

It is decoded uh successfully that means uh  This was done by me I mean the owner of the   account so that is how it is uh done in a very  simpler way okay so I can manage these two nodes  

Specifically now I mean right now this is on my  same machine but uh in the real world this can   be you know over the Internet this can be my uh  say located in say accounts Department this this  

Is something might be there in my HR department  whatever you design uh in the actual uh problem   or actual uh you know the real world situations  so that is how it is I mean right now we are in  

The web interface and we are seeing the uh basic  information so that is fine so now let us browse   this complete web interface and uh see I mean we  can call this as an application itself because  

I’m connected to my node I got some controls in  my hand to control my node I got few things uh   which I can you know uh few actions in my hand  which I can do and you know I can I would say I  

Can solve my problems for example I can create  my asset here I would say I would be showing   all these things how to do that okay so let’s  start with uh some permissions so you’ll be  

Seeing that uh it since this is a node one who  is the owner of the blockchain uh he has all   the permissions because this is his own address  and again you can see this is my address that’s  

My address means the label that I change here so  let us change it to something that uh note two   because it is this to everyone so that it should  be identifiable not two okay so let us change the table okay so note two is having this  address uh the public Key address and  

This is these are the permissions  we had given to the node to if you   remember this uh was done by  a command line that we had R previously so is it clear as of guys one  quick question where we gener the public  

Key and private key in this system this  is this is generated automatically when a   node is instantiated okay so that is done by the  platform itself so platform generates those for   us because we cannot Define our own private  key because it’s a again a cryptography key  

Which has to be uh in particular format and  which again has to be with specific length sorry okay guys so yeah uh as I said the uh public  and private keys are offered uncreated by platform   itself because uh they needs to be in specific  format and length because that’s when the uh uh  

That’s when the key will be secured if it is uh  there in the predefined format otherwise if you   define like say uh a key of uh some random length  then it would not be fitting in the uh encryption  

Algorithms and um it will basically fail on the  netor because it should be in a predefined format   and the protocol okay so this is permission stab  you can uh I this is not just a read mod another  

Question here yeah um so um uh this is since  we are talking about a private Network private   uh world so my question is um uh the admin I  should be able to get the complete I should  

Be able to store the complete information of the  node in my uh system somewhere right for example   if node two has asked for a permission I should  be able to uh um uh get his identity uh if I am required yeah

So yes I got your point but since this  is private so suppose if anyone wants   to connect to you so what he’ll be doing  is he’ll be sending his address to you   or email or some messaging platform and  uh based on that you can identify him or  

You can create another application basic  small application in your internet just   to you know submit the addresses and the  identity so that’s how it works because in   the real world you should be knowing uh the  person personally then only you can you know

Exactly exactly so so my point here is uh so  we need to have a separate Al together um uh   an application I would like to say because see  these kind of things like blockchain and all are  

Fairly technical okay so someone who is setting  up must be definitely a technical guy so if he   wants to set up a node um to uh on the network  so he’ll be getting the address of that node  

And sending you over the email so that’s how it  is I mean is no specific need of application as   such but I just said that it can be done okay so  what you’re saying is that uh uh the information  

About the node two uh should be maintained at a  different place somewhere else other than the mul   chain exactly okay yeah I mean at least the Iden  of the note to is uh should it is private again  

And if he wants to be a part of network should  come to me and uh I should be knowing him in the   real world hey I know this is sunil’s address  yeah it is fairly fine to add in right that

Way all right so uh on this tab you can again  uh do many things you can so uh if you want to   change the permissions or assign permissions  to someone someone new on the network so what  

You have to do is so this will remain same this  is your own address admin’s address and uh this   will be the for for address for example Suppose  there is a new node comes on the network and he  

Wants to be a part of it and you want to you  know give some permission Str so just paste   the address here right now it is showing me  one of my previous setups Network address but  

That is not a valid on the network so just past  the address here and uh just uh change the uh I   mean the selections here so what I’ll do is I’ll  copy this same guy Noe two so right now you can  

See there are only three permissions given to him  so what I’ll do is I’ll paste him again here and   I’ll say uh I’ll give him new set of permissions  which includes previous one and I give him many okay so just H the change permissions yeah  and G to the network this transaction and  

Can see the updated permission so if you  refresh this page you’ll be seeing that   his permissions are updated okay  you can again copy this address and you can say only connect and S and receive  again modify it again so let’s refresh it

Again okay sorry I what I did is I have to  revoke uh this permission so when saying it   okay revoke mine issue create okay roke mine  issue and create and keep this as it is so  

That’s fine just send it okay that is done and  again back to the previous set of comms with not okay fine so now uh let us come to the  asset part okay so you will be seeing that  

Uh one asset is already listed here which is  issued asset and uh you can see which is cmx   okay uh cmx is my uh asset issued on the network  which has total quantity of this 1 million and  

This are the denominations and issue is again  me because I had done this on the command now   let’s come to uh send send button is for you  know sending the asset so here you can see   my available balance in the issue asset tab  you’re seeing it as 1 million because this is  

The total quantity on the network okay and you  can create a fresh asset again here and let’s   sorry so now let’s create uh the asset that  uh sonil is talking about so so now let’s say create ABC Apartments flat 101 okay and the quantity is

One again units sa one and to whom I have to  issue this asset at the time of creation only   I can say that hey let’s create for the  node two so the whole quantity will be uh  

Allocated to node two okay I can do that  but let’s say keep it to me for now let’s   keep the flat for me okay so then you can  see it here I have this option to upload a  

File okay so that means I can uh attach some  file some physical file like PDF or anything   to this asset so that whenever this asset  is transacted so the file is presented as   a as a data associated with this particular uh  asset okay so that file can again be your say  

Agreement or whatever U document is associated  with your actual real asset okay so and there   again you have some custom fields which are  like key value storage uh field so I can   create uh suppose I can just uh give address  to this uh Department I would say City Same by then

State okay and uh sa pin okay so I can asso shate multiple key  values to it and this again can be you can   put the whole Jon or you can put a complete  file to associate it with this uh asset and  

Say issue set all right so my flat is  put on the Network so this is my flat   name and identity so now and I have assured  I mean this is the issuer I mean this is the  

One person who is who had issued it and these  are some of the metad data associated with the   set okay so now this is issued a set which are  present on the network so if you come to send

Okay so this is just a display issue here but  this is flat ABC apartment flat 101 and the   quantity is one but this is uh CSS issue or  I think my screen is very short for this or  

I guess the name that we have given is not  fitting in the table I can just show you guys okay you can see this is the asset name and  this is the uh quantity so there is one one  

Quantity of this flat which is in my position  right now okay so what I can do is uh since   I’m on the send tab I’ll will be coming  here so from address that is me I’ll say  

Select the asset that is this flat and send  it to this guy that is note two okay and I’m   sending the whole flat I mean that is quantity  one so send asset you can see the flat is now  

Gone to that guy okay so now come to Note 2  and you can see the flat is now sold to note two okay and everything is uh  recorded on the blockchain with   these transaction numbers so uh there is  a I’m an Explorer app which you can see  

What these transactions are for  example last time we see about Robin so in this example um the centralized  Authority is transferring right yeah it is   not okay sorry what is the question question  is like in this case the example or use case  

Which you just did it is some kind of central  Authority which is doing this transfer from one   person to other person right no no actually what  is happening is uh I pushing a transaction okay  

Because I was owning that flat okay it was there  in my wallet I uh sent it on the network okay so   whenever I I’m saying I’m sending an asset that  means the transaction is getting pushed on the  

Network and you might have seen a transaction ID  was given to me okay so what what happens that   transaction goes on the network all the network  nodes Associated I mean which are present and   active on the network mins the transaction they  validate the transaction that yeah this is the  

Uh uh valid transaction because the cender of the  transaction is the actual owner because they know   my public key if they are able to decode that  using my public key that means I had encoded I   mean I had encrypted that my private key so  that private key is my something that is my  

Identity my ownership so uh on the network it is  confirmed that it is only sent uh by the owner got   it question is that uh who is going to give that  asset key in my wallet is that who who will go and  

Create any flat definitely not yeah I mean that  is again uh you can control on the network you   can I mean this asset creation mechan permission  okay so right now so let me answer that uh soil   basically when first time taking example of the  Karnataka government itself right when Karnataka  

Government will start this project full scale  first time they will register all the properties   that they currently have in their current current  register database right currently also they have   register database they will register all of it on  uh the blockchain that they’re building from then  

On whenever someone wants to sell or someone  wants to transfer ownership they will do on   this blockchain application no okay n got so it  means uh database and blockchain two things you   mentioned so assuming I have not you have to  create a separate database I saying currently  

Yeah currently also when you go for registration  okay they have a history of who this land belong   to okay which is what we call as title leads  etc etc right which is what your lawyer does  

When you try to buy a flat he will try to find  out the ownership and the title ownership for   the last 20 30 years whatever to find out that  the property is not in dispute when you do the  

Registration you have a 50 page 40 page booklet  sort of registration document which is scanned   and kept at the register okay so this document  you have a copy and the regist also has a copy   now whenever you want to sell it okay you will  produce your version of the document that you  

Know I own this property the person who is trying  to buy okay he will also have to do validation   that you really are owner of it he will hire a  lawyer okay the lawyer in turn will go to the  

Registar office and try to find out who is the  correct owner of this office of that apartment   or plat with blockchain this is no longer required  because if the asset is once loaded or created for  

The first time in your name okay then everyone  in the network is able to see that you are the   rightful owner okay and from then the transactions  can be smooth the lawyer does not need to you know  

Find out who the property belongs to if you are  the buyer okay second buyer then you can also be   sure that you know nages really is the owner for  it otherwise what happens currently is you would  

Have seen a lot of scams where people claim to  have prop you know the property in their name   they sell it and then later you have you know the  person find out that it did not really belong to  

That person people sell government lands who which  has been you know unused for long period people   say it is in their name and they try to sell it  so when the government puts all of this data on  

The blockchain uh the first good thing that comes  out of it anyone can verify who the asset belongs   to second is no one else would be able to sell it  in your name okay which is what happens in remote  

Villages wherein you know without the correct  owner uh you know knowledge uh someone else   does the sale they get the money and you know  they run away with the money and the poor guys  

Is in trouble so with that what the government is  trying to solve this these SCS go out and there is   an easy way for anyone to find out who who is the  real owner of it okay so first time basically we  

Have to go to rest office or lawyer or any person  who has the authority to create ID for my in this   case it would be the government who would be doing  it anyway because they have to track all of the  

Properties that they have so whatever they would  be having in the current regist I’m I’m hoping   that is the correct way they’re doing it but uh  in other countries use cases that I’ve have seen   that is how the government does so government has  land Maps area maps for every every that comes in  

Their jurisdiction right they will create all  of these apartment that exist currently all   of the land pieces that exist currently on the  blockchain as an asset okay with the rightful   owner and from then whenever you do transactions  of obviously it would not be like you said yeah  

After that it’s clear so one basic question that  remains s there are 50 SC Pages first go for the   first time creation where will be those 50 pages  in The blockchain itself or in some database if  

That is in database whe that will be distributed  or not if you can see here we had an option to   attach a physical file you could store it there  itself sometimes you you may not even to store  

Even the first I mean the entire 50 pages like for  properties you have something called as the index   tool which lists the owner and it is just one  page so you could be storing that itself now that   depends on the specific implementation that you’re  are doing and what your business requirement or  

What the government thought should be stored but  it provides you with an option to store data along   with the transaction no no why I’m asking because  this is a basic question I have been searching for  

A long time I mean no no whether met data will be  stored in block or the whole content if the whole   content there is a limitation of the block size  that comes in picture if whole content is not in  

The block then some database if that is a single  database that can be easily corrupted so if that   is a distributed database where that hyper Leger  comes share so if that is the case your database  

Outside how I get your point what I’m trying to  say is if you see there is a 2 m that we had for   file okay now we that limit is also decided when  you design the network this is a private Network  

You can do anything that you want with it okay  if you want to store the 50 pages and the 50   pages comes in less than 2 MB you can store  it here or you could just store the index to  

And you can maintain the other data at you want  to store it in a distributed database you want   toore it on the you want private uh database that  design is up to you because you are the business  

You are the owner of that data right mean this  is a basic question which is getting asked if   that is a single database then that can be easily  corrupted and using the blockchain only we can  

Verify that data is correct or not if not then we  right data blockchain is that we have to keep it   safe all the dataa I mean in this case as you see  I have a attachment field here I can attach the  

Whole agreement or whole complete document right  now it is configured as a 2 m limit but you can   increase that from the configuration and suppose  you have 100 MB PDF file which is a complete scan  

Of your uh agreement or the the document of your  property uh so you can just attach it here and it   will be uh you know always associated with this  particular you know asset for the complete life  

Cycle so whenever this uh asset is transacted on  a network so that particular file will be always   associated with it and it will be secured and uh  as you said it will be distributedly stored on the

Network okay everyone uh on the Node when it when  new node joins in so he will be downloading all   these blogs uh every uh on the first time so  right now as as we see that uh there is some  

GBS of data which gets downloaded when you join  the ethereum network so that is the actual blog   data okay so in this case when a node joins  so he will be downloading all the blogs on  

The network so which is again like having these  PDF files in it got it just to add on this this   being multi-chain okay and we are controlling  who can do Mining and who can be the admin Etc  

So it is not the entire network that would be  getting all of this information depending upon   what permissions we give to what exactly  yeah yeah could you repeat last statement   I’m saying we can decide who which users can  join and which users can play What role here  

So depending on what permissions we have given  for View and for create transaction that user   will be able to do only those operations which  we saw in this demo also yeah we not we have not  

Covered that part yeah I mean it is it is this  permission St so you can we just saw creating   granting and roking of permissions yeah okay  okay exactly so when this when you issue this   mine permission to a node that means he’ll be  downloading all the nodes and the data associ  

Unless until you don’t give this permission all  the data will not be downloaded on his machine   right he will be just having this permissions he  he won’t be a minor but he would be connected to  

A network for for some other purposes right that  way you can control it from uh this dashboard and   that’s why this multichain is in picture for  the private blockchains where you can should   be able to control the access rights and the uh  the permissions to the notes based on your uh  

Knowledge who is uh legitimate uh guy to whom  you can you know uh give the access who can   download the data who cannot download yeah as  as we saw yesterday also in multichain there’s  

A handshake process before a new node can join in  or a new user can join in and the handshake is to   ensure that you know the person who is it right  that is why you cannot directly join in you have  

To provide your address to the admin so that  ensuring that handshake process okay remains   of the blockchain wherein that’s some mechanism  the user has to provide his address to the admin   uh it ensures that the admin at least knows at  least the admin knows the person who’s trying  

To join the network so I think this is was a  question sometime ago by nages also how do you   you know uh know the person in real world so the  handshake process ensure that you know and when   I talked about financial institutions yesterday I  said that financial institutions need to have kyc  

Of you know people who are doing transactions  on their Network now currently they are able   to manage it by doing physical kyc but when we  are talking about cross uh no uh Banks or cross   financial institutions interacting with each other  the other guy will not have kyc for this customer  

So how would the uh regulator ensure that the kyc  is done or we are dealing with the right person   that is how multi chain does it that at least  the admin who got that guy on the network would  

Have done the kyc or registration for that person  and he would know who that person is in the real world so uh so uh one quick this thing Kaka and I let to  um just summarize my understanding and just let me  

Know if my understanding is right or wrong and  if you feel that is disturbing the flow you can   discuss offline I don’t want to disturb your flow  okay so suppose now uh I sunim and um uh our shaji  

We are three land owners or flat owners and we are  starting this blockchain with these three people   so what we are going to do is like as an admin as  an Andra Pradesh government admin um uh Kaka will  

Create three records three existing record land  records so my first question is are these three   records three nodes or these can three records  can go in one node no no this will be like three  

Assets not the nodes so if you come on the assets  tab will be asset right now can create multiple   assets yeah it could be the government who’s  creating the assets and assigning it to you   for the first time from there on whenever you  try whenever you make a sale it would just be  

Transfer of that asset okay so so in this case  I will create three assets one for me one for   Sunil and one for um our shaj G now uh now then  you will as an admin you will create three uh  

What do you call three what do you call public  keys and assign these public keys to three off   us yeah with our assets uh associated with these  Keys yes and private key and private key would   be something that you are supposed to maintain  secretly not to anyone not to show to anyone so  

Whenever the even even if the admin wants to  transfer the asset he cannot do it himself we   saw that yesterday that even miners cannot add  transactions by themselves because for now that   to be transferred to someone that private key has  to be provided that asset has to be signed using  

Your private key so that when other miners see the  transaction they would be able to find out that   it was really you who initiated the transaction  that is why in the system you would also have an   way to initiate a transaction basically it would  be you who would be initiating the transaction  

Signing it using your private key right so so  I have one more question so now um I want to   sell my property to nages who is not part of this  network so we initially started with three assets  

So assets are still three but stakeholders are  now increasing to four he need become he needs   to be he needs to join the network he will also  have his own public key and private key okay and  

Obviously I mean like any other right you want to  send money to someone in the bank they are not in   the bank can you do it no so you have to be on the  same network to be able to transact okay sender  

And the receiver be on the same network that’s  condition okay so I have Al I have one question   so yesterday we asil described multi-chain which I  have been understanding means sbsc has one chain I  

Another chain or in the same different here what  we did we have from the one Genesis block we have   created one node then that is the master type we  can understand because that’s giving permission   second third so what I can think as a single  Department chain we are going to create right now

This are you getting me uh so chain is basically  your network when I talked about yesterday for   example IC would have their own chain okay have  their own would have miners right similarly sayc   bank would also have their own chain and OWN  Network okay which is also on multichain or at  

Least on the Bitcoin platform because only these  platforms are cross conversation okay it mean I   if we are assuming HDFC case then ICI they have  also created their own chain based on their on   Genesis block exactly exactly got it and uh to  I means which node of ICI stfc has to get give  

The permission stfc can decide right so both the  parties will decide that this will be the only   machine and this will be the only address which  can send transactions to you so there might be  

Other blocks I mean other guys on the on the Node  if they try to send the transaction then it will   get invalidated because they are not authorized  to do that so that is how we will I mean we will  

Control it using the gr permission for these modes  okay got you by the way Kaka this permission where   are we storing and in which format Jon format  in the block itself or somewhere else no that’s   what I said I mean when you uh uh change the  permissions right you saw a transaction number  

Coming up there okay so this again goes on onto  the network and it is again validated whe the   admin has made it or someone else because that  is that again has to be validated by Network so   if I’m pushing a transaction for a permission  change so it will create uh first transaction  

On the blockchain itself again okay so that  means that on the network people should be   voting for me that yeah this is done by the Admin  is authentic for it right so permissions are not   stored uh at the central stage anywhere it is  again distributed on the blockchain there is  

No Central concept itself in blockchain that is  that we have been discussing so everything that   you put in every piece of data that goes on  the Block so it is internally some permission   block uh uh chain which is a system chain I  would like to say and that is managed for the  

Permission changes or the permission transfers  I would like to say okay because we are creating   user and user is also some priv public again you  see for the change permissions form I have admin   address and the for address that is means this is  the sender and this is the receiver okay so yeah

Okay so now C okay fine so now guys I mean since  this is multi chain as you see uh we are just on   a single chain right now that is chain one okay  but you can create many chains uh in a single  

Network again for example suppose right now we  are having this asset called as a flat some for   example I can segregate or categorize my chains  saying that uh create a chain for Residential   Properties that will be a residential property  chain create a chain for commercial properties  

Chain or any kind of use case that I have that is  up to me how I design it okay so that’s a beauty   of again multi- chain you can run multiple chains  at the same time and you can work on them so when  

You land on this uh page you see J one uh again  you can add multiple chains and you can click on   that and you can you know log into that chain  and see the transactions and everything about  

That particular chain so that is multi chain  okay so now let’s come to uh next uh concept   that is uh streams another question yeah yeah  um this is about uh the units so um in this   example uh we have an asset and that asset  when it is transacted it can be transacted  

In in the amount money right yeah so uh one  thing which I’m capturing here is the asset   how where it is transferring from to whom Bas  on public address and so on now what about   the money how can I uh uh introduce the other  factor which is this amount particular uh you  

Know asset for sold to this public address or  transferred with this am created this C so you   can have custom fields in it so you can Define  custom fields in your particular installation   I mean this is what the network this is what  the platform is offering right if you want to  

Add additional data you can add additional  custom fields and add it as part of the transaction yeah if you see at the bottom you  have custom field key and value and I can make   it mandatory I mean I have to specify all you  can design it according to your yeah okay okay  

Thank you okay so now let’s come to streams  as I uh briefly uh talked about streams in   the uh presentation so streams are basically  time series uh database but again this is not   a plain relational database it is not plain no  SQL database but it is a database on top of your  

Blockchain so what happens is uh in a Time series  data uh just uh imagine an example like U when a   chart is built for the stock price okay so those  stock prices are recorded in the real time okay  

So for particular instance particular second and  minute what is the price that is recorded on the   uh database okay so and that should be immutable  because that particular price which is written at   that particular instance should not be over or  get modified any time in the future so that is  

The requirement I mean for such kind of databases  and such kind of uh you know data storage where   there is a huge number of Records flowing in like  stock price data uh like uh location data suppose   I’m tracing a location for a person uh suppose  I’m building a mobile application in which I  

Want to you know record uh record a location uh  points for a user who is traveling uh from one   location to another location so in these kind of  databases you need U some high speeed uh again low  

Weight uh data storage solution and again it  should be immutable I there should not be any   way that data gets tampered or you know change in  the future and that’s why the streams are created   by the multichain team so they created something  called the streams and this is purely like data  

Storage in a way of uh I would like to say key  value storage so we’ll see how streams actually   work okay so I would say that I will be creating  a a stream to store a price for suppose I would  

Name it as Reliance stock price okay and this is  from address that is the cre creator of the Stream   you will see this again goes on the network  it creates a stream for me okay this is the

Stream okay now let’s come to publish and we  will see publish to steam okay so this is just   a form but you can use this in a application where  you are recording the uh stock prices and you’re  

Pushing on to the blockchain database okay so  now I would say that I’m recording stock prices   for Ariel okay so I would say rate and I would  say text I would say it is 120 as of now again  

This is very similar to asset but in a different  way you can upload or you can attach your document   or file to it just as a data associated with that  particular block it is asset but it is something  

Light we and uh uh created for faster storage and  rable purposes okay will publish this first value   to this uh stream that is Ariel stock price okay  and you can see again I get a transaction number  

Now just say view streams and now you can see I  have this uh sorry stream Associated uh with my   account that is this but I have not subscribed  to it subscribing to a stream means you are uh  

Become a subscriber for example what happens uh in  stock markets NSE and BC records this stock prices   and uh all the uh Financial companies uh becomes  the subscribers uh for the stock prices so let’s   uh subscribe me as well and I would say that I  want to become a subscriber to this particular  

Stream or this particular database I would like  to say okay and now I can see the entries uh   against this uh streams that are associated  with me so I would like to say just click on   this and I can see what are the you know records  currently present on this particular stre stream  

So right now I just have only one entry that is  of 120 and which was recorded So this Tim stamp   is very important in case of stems because this  is specifically designed to record time stamps in  

The real world because this shows me that at this  particular time the stock price was 120 okay so   now let’s publish another uh value to the same  stock and this key is optional okay so you can  

Define what you are actually entering it or you  can again put some uh location kind of data like   longitude and latitude in uh the value so that  when you’re passing it when you’re retrieving  

It you know that how to you know process that data  data but you can associate data in a string and in   any manner and in any size which is configurable  and uh which is you know up to you how you you  

Know Define and design it so I would like to say  that from 120 it went to 125 just now okay so just   go to streams are you stock price and see this  is a chronological order in which the stream is  

Getting changed okay so data is getting changed  it was 120 at this moment and it is now 125 at   this moment okay so uh when you’re developing an  applications where these kind of requirements are   there where you need very faster storage and AAL  uh uh key value database okay for suchar purposes  

The streams are created and API are present  there you can utilize these apis and I mean   behind the scenes you are not storing this value  in a particular server there is no Central server   where these values are stored these are pushed  on the blockchain and these are distributed on  

The network people have validated them that  this particular uh you know when I’m saying   publish so my address is going on the network so  again this is validated that whether this guy is   uh allowed to or permitted to publish uh on a  stream or not based on the permissions you can

See okay so whether I’m able whether I’m  to whether I’m uh uh allowed to you know   send uh the transactions or not so  that is again uh validated on the   network so that means your data is uh  pretty much uh secure it is authentic  

And it is definitely not tempered  because it is on the blockchain okay on this stream now you  can see uh if I go to node two because he has the right to send the  permission of sending uh is given to him  

So suppose on the network uh node two said  that it is 120 six okay publish it and go to   STS then this guy is not subscribed to it he’s  just writing to it so let’s subscribe and now  

We can retrieve the data and say it so this  um you can see who has published it is also   recorded who has actually recorded this value  is given here okay so in the network so BC or  

NC might be having uh multiple servers who are  able to record the values so in that sense you   can configure it like who can actually write  the values and who can actually retrieve the values okay the only important parameter  which is associated with the stream uh  

Data is a time stamp for uh time stamp  is always present with you you don’t   have to uh you know uh enter it manually and  that’s why it is used for the time series uh databases okay guys so I think uh I’ve covered  most of it uh from the today’s session almost  

Uh done streams was the last part and uh  there are other things which you can try   uh from this command line interfaces but  most of the concepts are covered here and   uh yeah I mean there is one more uh project  associated with this uh this was one of the  

Uh web interface that I uh showed to you which  is fairly I would say a mini application or   vanilla application built on blockchain which  I can modify as per my requirements and I can   you know call it as my own application on the  blockchain because it is talking to blockchain  

It is uh you know doing transactions on the  blockchain and that’s what I wanted uh Kaka   you can just show Yu chain and from there you  know they can download Yu chain and set up and   try their hands at the example applications  yeah sure I mean UB chain is again uh doing  

This uh and it is again utilizing this multi  chain yeah it is built on to of multi chain yeah so this is one more uh uh I  would call it as a set of uh I me   it’s a composition of two three  applications in a uh one package  

Which you can explore where again  this uh web interface is present there for if you can just go to the previous  screen so if you see there are two applications   here one is uh multichain Explorer is also  there so if you want to you know set up an  

Explorer similar to what we saw for Bitcoin  or for ethereum uh you have a web application   there so you can install this by your hands  on multichain development envirment correct   I demonstrated this one web demo to you guys so  there is one more called as multichain Explorer  

So this is very similar to uh the rstream  network that I showed you in the last uh   uh demo basically so these kind of uh things  are present in that Explorer project so you   can see you can browse uh all the transactions  on the network that are running you can see who  

Is uh transferring what and uh what are the  status of the transaction in the real world I   the real time and uh yeah I mean everything that  is there on this uh robin. scan. similarly there  

Is this thing multichain Explorer you can uh you  know try installing on your VM and uh explore it so any questions guys uh uh Kaka just one  question can I see the r call which you are   making from your PHP code sorry you mean to say  this application yeah the application which we  

Are going to node one node two yeah this is this  I showed here already I mean this is the web demo   project okay no no yeah demo project code I was  just yeah here is theode you can browse it okay  

Yeah okay so Kaka sometimes could you cover me  SW which were hyper leer fabric because these   are the ter which are coming frequently and very  to this blockchain agree but hyperledger is not   part of this course because it is again itself  a different platform and Hyper Leger was not  

Part of this program Miss as like eum you mean to  say correct okay so could you give some time for   whisper and swarm because these are a storage and  messaging system for ethereum uh you you want to  

Understand it theoretically or uh not within two  or three lines because one is for messaging one   is for storage this is not sufficient but I want  to how to use this so definitely it will take 15  

20 minutes sometime for us to understand uh we’ll  see if we can yeah not today definitely I think so   next week we have some time yeah and uh definitely  I agree hyper laser those are different totally  

Different field but there are many components in  uh inside the hyper laser I mean fabric there are   two three more so we can get a basic description  of that me how they are correlated with ethereum  

Because concept is same for these two ethereum  and that I’ll try to see if I can put something   around by the next but I will not that that will  be great so thanks for that all questions from my

Chat okay then I think we can close for  the day uh a very basic question here   um last uh most so um in the case  of a digital signature so how are   we going to uh where how does it comes into  picture here we have to configure a digital  

Um digital signature um in the document  you don’t have to configure it uh okay this okay I don’t know whether to take  it for everyone so we studied uh C about   cryptography I think in week one uh wherein  you have your uh how you do authentication  

How you do digital signatures maybe I  can pass you you know a couple of links   which tells you how digital signature uh  works and how it will work here because   it would be repeating a lot of what we covered  earlier that yeah okay for NES right yeah yeah  

Okay M yeah all right so we can discuss later  that’s sure yeah yeah we can discuss it yeah sure okay guys so I think uh  we’re almost done with today’s session okay thanks everyone what was  a good s thank you thanks guys thank you