 Hello, everyone. Yeah, sorry. I am not able to figure out who whether people have joined or not, but yeah. So I think let's get started. Apologies. I so let me share my screen. All right, so I hope you all are able to see my screen now. Okay, so yeah, I'm Hitoshi Butch. I'm chief architect with Vipro. I lead the blockchain center of excellence and I've been working as in this space capacity for last four and a half years now. So today we are going to talk about oceans plastic and collection and recycling solution. Right. So let's dive right into it. So the problem is that, you know, there is a huge amount of plastic that is, you know, goes into our oceans right and the numbers as you can see are so huge and and there are certain, you know, that the ecosystem that is required to, you know, collect the plastic that you can recycle it is not there, you know, as per the as per the need right for you know, so communities and individuals they would want to participate in it but again, you know, beyond the social cause what what else is there for them for to them for them to go into the ocean or the beach and and collect the plastic right corporations, you know, also, they also want to abide by the law of the land and not get entangled into any jurisdictional issues right like child labor etc. So when so they are also not fully onboarded so so the need is to first, you know, establish an ecosystem and and, you know, which is inclusive and it also incentivizes the various players right various actors and who will participate in this recycling process. Right and and to further, you know, highlight this problem, you know, as to Hawaii plastics pollution is a big issue, you know, so as per UNESCO if nothing is done then, you know, our marine life is going to be extinct right so so that is that should tell you the gravity of the problem and, you know, as you can see there are gyres up all across the world right which are so huge and and so there has to be a solution, you know, which is community driven as well as supported by the local authorities and governments right so that this sustainability initiative can be supported right so So now I'm going to talk about, you know, how this entire thing will work right so so so what we're going to do is, you know, establish a flow right where the collection of the plastics right from the ocean as well as the beaches are nearby areas is done, you know, by individuals families and Jews and and they are able to aggregate it, they're able to collect it and deposit it somewhere right to to the aggregators and and these aggregators could be mobile units right and then the aggregators themselves are responsible for collecting plastic or you know accepting plastic deposits from various sources, you know, remove any debris or sand etc and and then supplied to the recyclers right so and and the recyclers would then segregate the plastic based on its quality based on its type and then recycle it and then further in the downstream supply, you know, provided to, you know, companies who would want to use the recyclable, you know, recycled plastic to create their own products, right and then we would have an auditor or a regulatory oversight to to basically see whether the the rules, you know, or the law of the land is being followed, you know, the credential of each of the parties verified right and and there are no unfair means being used to collect the plastic right and and there is, you know, the incentivization and all is also happening in a fair manner. Right. So, so that's the process flow, right, which is simple enough to understand. And now I'm going to talk about the architect, you know, the certain aspects that are embedded into the solution, you know, and a very important part of this solution is the the incentivization right because what is in it for each party to to participate in this community initiative right so so the incentive and token calculation logic basically is embedded into smart contracts right which take into consideration. You know, what is the total collection, you know, plastics deposited, what is the quality of the plastic right and and based on that, there is also a credit score that is being or a repetition of each actor that is maintained right so so all those factors are taken into consideration. And whenever a plastic deposit is made, or when that plastic is moved across the value chain right so so as in when each and every actor completes their, you know, their task and the plastic is accepted by the by the next participant. That's when we, you know, update their tokens we update their credit score also right as we'll see in the demo. Now, coming to the architecture of it. So here we have leveraged a hybrid model, where we are using the hyper ledger fabric as the private consortium chain, right, it's a private blockchain network, which is integrating with the header network which is a public blockchain platform. Right so what happens is that the private network blockchain network is comprising of the different peers, right hyper ledger fabric peers that represent the different parties right now. Since this is a, you know, solution integrated with the public blockchain so it's not really required that each and every in, you know, role is represented as a node, there could be shared node concept also but a minimum viable, you know, network has to be running for all the participants to be able to interact through their distributed apps. Right, so as in when each of the, you know, play participants like the collector or the aggregator or the recycler, you know, submit the transactions, you know, which would be about plastic deposit or accepting the plastic that transaction goes into the hyper ledger fabric network, and the order node, you know, leverages the header consensus service for fair ordering and arriving at a consensus right so here you can say that the order node has outsourced the consensus process to a public blockchain right so which adds to the overall credibility of the solution right so if you look under the hood right as to how this whole thing works is that the client application which is being used by the collector or the aggregator or the recycler will submit a transaction to the respective peers right and then there's an, you know, in hyper ledger fabric there is an endorsement process for that transaction proposal. Right, and once the endorsements are obtained it the transaction is reaches the fabric order right so now the fabric order basically will submit the transaction to the main net node of header right and we pro is one of the governing council members and we also host a validator node. So the each of the validator nodes in a network are you know hosted by in a neutral well well known organization so so the ordering service of fabric will submit the transaction to the main net node right and header as a concept of a mirror node because the main net node does not retain the entire transaction it only retains the hash of the transaction so the once the transaction is finalized after consensus is achieved on the main net the copy of the transaction is you know relate to the mirror node right so the mirror node is a read only node to which any application can subscribe to on a particular topic right so for this particular application the topic ID is created on on on the mirror node and the fabric order is then able to listen to that topic ID to get a transaction that you know a particular transaction has been finalized on the header a network right and it relies on that confirmation to you know come create a block you know within the fabric network and propagate it to all the peers right so so under the hood this is how that this hybrid agreement works where the transaction initially is received by the private network and then it leverages the ordering and consensus mechanism of the public network so what it effectively does is for each transaction there is a proof on the public network that transaction has occurred it is a valid transaction and it is a very verifiable proof right so now in terms of why hybrid blockchain right this could have been built on any permissioned blockchain or directly on a public blockchain as well right so there are certain advantages you know which both public and private bring into blockchains bring it on to the table right one is the decentralized ordering mechanism right that provides more credibility and transparent transparency to the solution right in terms of privacy and smart contracts you know hyperlature fabric provides that capability for you know not only private transactions but also the chain code capability helps us in you know embedding the tokenization and reward points logic right so that can be customized and be you know incorporated for each participant the proof of plastics collection right because for example if somebody wants to claim a tax rebate or they want to you know you know gain any other you know benefits from from the government so this is something where the proof will always be available on the public blockchain right for for them to present and in the future you know if let's say there are many such plastic recycling chains that are operating right whether they are on blockchain or not but they can all integrate with header and network and the head and have their own topic IDs to which they can interact with or listen to you know and and does you know this entire ecosystem can be you know integrated right through a common public blockchain network right so that is what I wanted to cover in terms of the use case and architecture I'm now going to switch to the demo part I'll just check whether okay great so I'll just switch to the demo now right just give me a second right so now as you can see here you know Bob is a collector of plastic you know who collects the plastic from from the the beaches right and and as you can see on the dashboard they have certain tokens already earned Bob is already uncertain token and there is a credit score based on how much plastic they have deposited till date and you know what is the how good that plastic was right so there is a as I've shown earlier there is some calculation mechanism which we have embedded in smart contracts right now Bob you know wants to create a deposit plastic deposit transaction right so they what they will do is what you'll do is basically classify the material of the plastic right also you know what you'll do is specify what is the weight and where from which location the plastic was collected and finally you know submitted to a particular aggregator right so here in the system we have CD plastics as one of the aggregator so as you can see the the plastic deposit transaction has been submitted right and this is something which gets recorded on the hypothetical fabric blockchain but that gets done after the after the consensus is achieved on the head era network right so as you can see here that there is a unique deposit ID for the transaction right then there is a you know who was it deposited to what was the weight and then there is a transaction hash right from the fabric network which represents the fact that this is you know recorded on on on on the private network right and that the private network is consensus is based on the public one so here the transaction ID is there and we have kind of decoded the message to show that this that this is the actual deposit transaction that Bob did right so and with the block number and this is something which we can also view on the Hyperledger Explorer right so this screen here as you can see there are you know the latest block right which is the block number 40 is something which represents the plastic deposit transaction submitted by Bob right and for this transaction there is a corresponding transaction on head era network so this dragon glass is an explorer which listens to a particular topic on the mirror node right so that mirror node will have you know a series of transactions right with which are resulting from the fact that you know Hyperledger Fabric Ordering Service had submitted the transaction on the main main net head era main net right so that that proof is also something which is automatically available on on the mirror node right so this is a submit message with the you know consensus time etc right so once this is done the next step in the processes that you know the aggregator will you know get a notification right that certain plastics have been so they also have a token balance and you know the plastics collected they receive a note notification saying that you know Bob has submitted this much amount of plastic right which is of type PVC etc and there is a you know they also get to verify that this is a valid transaction on blockchain right and what they can do is they can accept this particular you know deposit right so they can rate it whether it is you know what quality it is whether it is high low etc right and based on that the tokens also get calculated right and the reward points for that for Bob so once that is done again this is submitted on to blockchain and and then as you can see that the total transactions you know for you know for CD plastics are available here now the next step for you know CD plastics aggregator is to you know further ship it ship this plastic after they have cleaned it up etc to to an aggregator right so here we have one aggregator in the system which is geoplastics right and as you can see you know see that the all the details are available you know for that particular transaction on on the hyperveger explorer and what CD plastics the aggregator can do is submit this to geopolymers right so geopolymers is a recycler who will receive this entire plastic right so as soon as you know CD plastics submits this to geopolymers again you know the transaction is committed on on to blockchain right and then you can see this this is something which is now pending with geopolymers right so and there is a unique transaction ID and block representing that particular transaction okay so now the last step of the process is that the you know geopolymers basically would access their dashboard right and and they would see that you know there are certain transactions that are pending for them so some there is a transaction from CD plastics right with which has 650 kg of plastic in it right and that is something which they will verify and and certify that okay this is of of of you know good quality and they have accepted it for recycling right so as soon as this accepted for recycling what happens is that the tokens for you know CD plastics get allocated right and similarly since the recycler has also accepted this you know plastic for recycling they also get incentivized right so so so the on the dashboard you know their you know tokens get updated so and as you can see there is one more transaction added to their to their dashboard right now the final view is going to be for a you know so as you can see there is a you know block number unique block number and transaction hash so once this is done you know now the regulator can have a view of the entire chain right of the entire sequence of events so here as you can see there are many such transactions that have occurred and for the for the transactions that we just saw right so here as you can see Bob you know submitted 650 kg of plastic and earned 975 tokens similarly you know CD plastics also so you know uncertain tokens right so likewise there are many combinations which can happen where here you know Alice is submitting certain plastic there could be multiple collectors right as you can see in this example who are submitting you know their own set of plastic all of that is aggregated summed up and and then it is something which is handled by an aggregator right and and they all get incentivized. So that's how the entire solution works one more feature that we are will be adding in the you know future is to be able to you know to add verifiable credentials right and decentralize identity to this entire solution so that the identity of the picker right or the reputation is something which is represented through you know their credentials right which is provided by a valid authority so so the question of whether they have used the lawful means or whether they have employed child child labor or not so all those aspects will also get covered right so we have a you know hyper ledger indie based solution which which can be integrated with with this current solution so that's what I wanted to cover right now and if there are any questions I'll be happy to take. Okay, could you go. Okay, good. So, Marcus has a question that could you go a bit deeper into the reward system are the tokens on hlf. Yes, the tokens are currently you know on hlf and the way they are calculated is that you know, I'll just show my I'll again share my screen. So basically, there are four factors that we consider right based on the weight of the of the plastic and the quality, etc. we calculate the token and that these tokens come from a pool which would be, you know, initialized by by the sponsor of the network right so obviously since this is a sustainability initiative. So we would need a sponsor for for the network who would you know have a pool of tokens from where you know these tokens you know whatever they earn is allocated to them and later on they can you know you know, encash it or or get some benefits, you know, our services out of those tokens right so so that's how they would be able to leverage but we are using a chain code to to you know basically to incorporate this calculation. And this this is something which will be available as part of the wallet of each of the participant right and I had one more slide which I didn't keep. So, so basically for each role, you know, we have certain payout formula right so for example for the picker or the collector, they will, you know, the different factors that you saw right that those are a b and c right like the weight of the plastic the quality of the plastic etc. So all of that, you know, is used for the calculation, right and that also impacts their credit score right because ultimately, you know, if somebody is, you know, depositing good quality of plastic right and regularly deposit it then their credit score also increases right so so that you know adds up to their role or reputation right so if some picker or collector walks into an aggregator so by looking at their credit score, you know, the aggregator would be more sure of, you know, the quality or the kind of plastic they are receiving right so they are kind of inter interrelated so but yeah so token is tokens are something which are calculated and maintained on fabric and get the payout, you know, how it would be honored is something which would be an extension to of the solution. Sure. Yeah, you know, I hope I've answered the hybrid blockchain because that is something which, you know, I get asked often saying that why do we need a hybrid solution right for this hybrid blockchain solution so the fact of the matter is that initially when we develop this solution right it was our you know, and and hackathon entry to Hedera right where there was a hackathon for you know leveraging Hedera consensus service right so we initially built it for Hedera to leverage Hedera blockchain right and and then you know then we thought that you know there are certain you know aspects of privacy right and you know token calculation logic which otherwise we would have to you know handle at the application layer right so how can we make that also be part of blockchain and that's where we thought of using hyper ledger fabric right which which has the capability to you know on board you know or verify identities through their membership services provider right so so organizations would you know would be more comfortable with those security features. Secondly, the privacy is also something which can be preserved and and you know chain code, you can pretty much write any kind of logic, you know, to have this sort of, you know, token or incentive calculation, right and and and with at the same time, you know, have the proof of the transaction on the public blockchain so which, which, you know, is globally available and can be verified by anybody. Okay, so if there are no more questions I, I guess we can conclude. I think I will, we've reached the end of time. Or maybe we've completed before time so. All right, thank you all I can't for some reason I can't see who all are attending so. So thank you all for your time and patience.