chainlink transactionsSergey Nazarov Co-Founder Chainlink web3 talks Mar 16 2023 MC: Marlon Ruiz

twitter chainlink oracle chainlink all time chart chainlink transactions Sergey Nazarov Co-Founder Chainlink web3 talks Mar 16 2023 MC: Marlon Ruiz
chainlink transactions can you make windchimes with chainlink... Sergey Nazarov Co-Founder Chainlink web3 talks Mar 16 2023 MC: Marlon Ruiz
thank you welcome everybody to this uh fireside chat Ill be your host Marlon Ruiz super excited today to announce our guest who is Sergey nazarov from chain link welcome to the chat Sergey thank you for joining us how are you doing today yeah doing well thank you for uh for having me glad to glad to speak with Folks at Google um great lets lets jump in sounds good we usually like to start with how you got into crypto your aha moment I know that youve had smart contracts for a long time uh that website goes back a long ways um can you tell us how did you get interested in this and a little bit about your journey sure so I got into um blockchain stuff around um late 2010 early 2011. um and there were like three main groups of people and there was only Bitcoin so there was no concept of blockchains there was just Bitcoin there were three main groups of people that were involved there were the people um who were building the thing The Cypher parks and like the people actually making the software that was a very small community there was a speculative community and then there was The Gaming Community um and I came from The Gaming Community basically and the some of the first people that mined a decent amount of Bitcoin were people who had gpus from gaming and they understood um Bitcoin to be a type of digital currency kind of like wow gold or something like that so I actually just got interested in it from that point of view initially at the very beginning because I thought I could use my GPU my access GPU Cycles to get get some kind of digital currency and I was just interested in that and then I started trying to understand what Bitcoin was because it wasnt really attached to a game right it was just like it was like some kind of digital currency without a game that came out of my GPU it was kind of kind of odd it was atypical and so I couldnt really understand what was going on and then when I actually started digging into it a lot of the properties of Bitcoin became much clearer to me which are basically that um its a kind of resource that cant ever go down and its a digital currency that cant go out of existence so those were two things that were very interesting to me because if you know something about the history of digital currencies like even going back to the early 90s and stuff like there are these things called beans b-e-n-z it was like theres a whole bunch of digital currencies that tried to get started in the early internet and and their consistent problem was that the rules of the currencies would change like what you could redeem them for so they had no they had no Global Market where they had real value and the entities that made the digital currencies always like ended up shutting down basically so there were all these people that did whatever they did to get the currency but then the the company the tech company making the digital currency would shut down and when I realized that Bitcoin could never be shut down as long as I and one other person ran um you know a full history a full Bitcoin node and so like the longevity of this digital currency could literally be hundreds of years possibly um I I kind of got got very interested in in how that was even possible and so I started digging into it and I started mining it more um and I began mining mining more and more because all you could really do back then was mine or accept Bitcoin like there wasnt really any way to build applications on top of Bitcoin um no one really was really doing that and then what what happened was um people started making the first what were called altcoins so alternative coins or they were called app coins those were the two names for them app coins are alternative coins and those coins began to um Fork Bitcoin or do other things one of the first ones was name coin which had um a name system for like a decentralized kind of DNS system um and then then there were others that that had functionality and I was building a number of different applications at that time that um I dont think were really that interesting but but then when I started trying to build those applications in a decentralized way they actually became very interesting so like if you take something very basic like text message um text messaging one of the first applications that I actually worked on was something called cryptomail where you were able to encrypt um plain text but you never had um a server that helped the the plain text or the cipher text that was always held on a chain so there was like this problem at the time where there were all these centralized messaging systems that were trying to basically make it so that you could send text messages without any Central repository where somebody could get access to the unencrypted plain text and they were like bouncing up against all these weird systems and all these like triple encrypted things like it was like really tough for them basically and then in in a number of weeks it was really interesting that I and a few other people were able to make something that solved that problem better than people that were much more experienced and much more advanced in their thinking basically because we had a decentralized infrastructure um and then I and then I started asking the question well what else can a decentralized infrastructure make very reliable um and the the answer is like basically all digital transactions period thats what I eventually came to but but when you when you realize that the the the guarantees that the centralized infrastructure offers extends beyond the one or two use cases where you get going in this industry it kind of becomes very interesting because you realize that all digital um relationships can become guaranteed those can be ad Network relationships they can be trading relationships they can be Insurance relationships um whatever whatever digital relationship you have and and then the really interesting thought actually is if I were to give you a web 2 application if I were to give you an application that had all the same cost and usability and features of a webto application but then I were to give you a web 3 version of it that had this guarantee that the application could never deviate from your expectations that would it could only operate within the scope of what you expected why would you ever use the more risky web 2 version of that application and I could just never come up with an answer to that like I could never no one so far has told me if you give me the exact same usability cost speed interface I will take the more risky thing that rather than the web3 thing that cant be manipulated and theres a lot of like recent stuff that just proves this to be true because now if you ask people if you could have a bank that you couldnt um couldnt be in a situation where your deposits werent accessible to you would you would you choose that bank over another bank like today people are yeah that sounds like a really nice feature like a month ago theyd be confused while youre asking them right theyd be like why are you asking me whether I can access a bank my bank stuff my bank stuff is good its all good um and and so thats I think what what what people dont fully realize that I that I and a few other people in our industry have realized its that you can actually just take every single digital interaction and you can turn it into something thats guaranteed rather than something where you have to rely on somebodys promises something that I call Brand promises and so when I realized that I think I realized that more around um like I was really really convinced of that around 2014 I just became completely convinced of that or that Dynamic um yeah once you become convinced of that its its really kind of tough to wonder to wonder how this isnt going to become the way that all digital information digital transactions digital relationships work the the challenge is really just making them work that way right which is the challenge that Im working on which is the challenge I know some people at Google are working on but I Im yet after over 10 years of working on this with various people Im yet to meet someone who can explain to me why would they would they would they would take the riskier version of an application if they could take the de-risked one and so Im Im continually Im continually convinced that um that that that makes a lot of sense yeah that thats a really wonderful point that you have because if people dont understand why they need it then theyre just going to say oh I dont care about that and just in the short time frame you mentioned already people are starting to understand that and kudos to you and and the rest of the folks in the industry who really saw this so long ago uh and then you know good for folks that are learning it now because its never too late to learn so I appreciate uh you sharing that particular you know story and I think it will resonate with folks on within our community and and everywhere else I mean imagine not being able to go to your bank and take your money out right um definitely not a situation that anyone would want to have perfect uh so as we like to educate folks uh lets transition a little bit to chain link itself and the creation of chain link I Ive been following channeling for quite some time and the thing that I first learned about it you know its an aura right and thats a really key topic can we peel that back a little bit and kind of explain to our community in the rest of the audience like why why did you create chain link and and what is an oracle and how does that kind of connect together for us sure sure so so smart contracts for me were always things that could automate important things from The Real World smart contracts for me were when I got into into working on Smart contracts when when they were starting to get going in this industry and the concept of smart contracts and ricardian contracts predates blockchains um and it really came out of you know the the digital world that that web 1.0 made and it really had a sense of automating things basically contractually automating things but um when when a lot of people after me got into the industry a lot of their tutorials and a lot of the things that they understood smart contracts were where they were like these tokenization machines right so whats a smart contract its a thing that makes a token it it keeps track of a ledger it does all these types of things thats not really how I how I got into this so from the very beginning the idea of a smart contract to me was a connected hyper-reliable automation engine thats what it was to me right and if you think about the semantics of smart contract it makes sense right because theyre smart homes so connected automated homes smart cars connected automated Cars Smart contracts connected automated contracts makes sense right um and so the types of contracts that I was building and and we were building even before things like ethereum existed were were these types of connected contracts that werent just um containers for state and tokenization so if if you look at us at what a smart contract is in in how its defined now its its basically a state machine on a blockchain that can do three primary things it can act as a private key infrastructure it can create token ledgers and it can be a state machine where you can define various conditions around you know those tokens or some other set of conditions whats more contracts dont do is they dont interface with the outside world so theyre actually a little bit weirdly named because the idea of smart implies connectedness in the more traditional kind of like web 2 world right connected homes connected Cars Smart Cars Smart Homes but um I always saw them that way so the very first versions of smart contracts that I was when we were building were connected and what we had done without like fully realizing it actually is build an oracle infrastructure and what an oracle infrastructure is is its a way to connect um inputs into a system that doesnt have those inputs right it doesnt it doesnt have some critical input and in some cases the ability to create a critical output so what what oracles do is they provide the additional ability for smart contracts to meet that smart dimension of being connected to things and the reason that we were um working on oracles more and more frankly is because uh ethereum did a really good job at capturing a part of the stack so so basically what happened was we we initially had a full stack solution which which had an engine for the state and had uh that used another chain other than ethereum and then and then we had an oracle system and then we had an interface and thats what was it was this kind of interface where you could go and you could make this connected smart contract one of the first smart contracts funnily enough was around search engine optimization where we allowed people to put down a deposit that a search engine optimization firm would get only if they raised the ranking of the URL for a specific keyword and the reason we made that contract was because there was like a lot of Fraud and dispute in the search engine optimization world because people would promise to raise the ranking and they wouldnt they keep the money or the people who promised to pay them to raise the ranking would realize its the wrong word or the wrong thing that they wanted to raise and they wouldnt pay the SEO firm and so we used the blockchain as a kind of smart deposit mechanism right where you could put a deposit and then and then the oracles would verify if the ranking of the of the URL was on a certain level for the search term actually on Google and the reason the Oracle could do that is because it was very public information right it was very easy to verify that um and so oracles for us initially were just an obvious component of a smart contract uh then ethereum did a good job at basically taking a part of the stack which I would call the kind of blockchain part of the stack the state machine part of the stack and then we decided that we dont really want to compete with or kill ethereum or or do anything like that you know we were excited about what they were doing and we thought they were doing a good job and we decided that the Oracle part of the stack was quite interesting because we already knew from the many years the building smart contracts that without oracles you really wouldnt be able to do much more than tokenization of some type movement of tokens trading of tokens and maybe the definition of some conditions but everything more advanced like Financial products Insurance um all kinds of advanced gaming like more advanced use cases would all require an oracle mechanism and then we began um with a more centralized Oracle mechanism but then when you think about it a centralized Oracle mechanism doesnt really provide you much because it doesnt um it doesnt really deliver on the deterministic promise of smart contracts right and the promise is that you have a an agent a technological agent that will in a guaranteed way execute your contractual relationships and so what oracles do is they feed that agent very very important um inputs without which the agent cant resolve the contract and so if it feeds the agent the wrong inputs then the contract gets resolved incorrectly so you could with a centralized Oracle pretty much control a contract and thats not really the point right the point is so that you have a decentralized truly deterministic truly reliable contract and the challenge is how do you take things that arent as deterministic as wed like them to be like Market data or weather data or identity stuff or various other inputs and how do you make those inputs meet that standard of Highly reliable deterministic contracts and so that challenge very clearly required um decentralization and so thats where the idea of an oracle network was born it was born out of this desire to not only provide data or information or inputs or even outputs but to provide it in a way that the inputs and outputs could be guaranteed close to or at the same level as the smart contract state because only then would you really make something that was truly reliable in this cryptographically guaranteed manner that we were seeking to create and thats what uh what chain link is so chain link is uh the leading and I think the first real Oracle Network that basically invented and introduced this method of consensus and the the the thing that our industry um really uniquely generated from a technical point of view is consensus right its the ability to guarantee things because consensus verifies it enough times with enough independent systems to make sure that it is immutable and gamable and guaranteed and so blockchain consensus once again relates to private Keys token ledgers and state machines and Oracle Network consensus relates to everything else so Oracle Network consensus relates to um data identity random numbers uh external payment systems basically anything that that can be proven through consensus will be proven with an oracle Network that focuses on generating the very specific type of consensus that needs to be generated to prove that think and weve been able uh in the chain link ecosystem and the chain link network with the community Us in the community have generated over a thousand of these Oracle Networks which basically means theres over a thousand of these this thing Services which generate consensus on specific topics that are critical for enabling things like defy and just to put that into perspective defy was well below a billion dollars when we got started and then it grew to well over 200 billion dollars and we were powering anywhere from 70 to 90 plus defying today we power anywhere from 60 to 80 percent of D5 because defy uh centralized Finance is basically that combination of State on a blockchain and Oracle Network consensus about data combined to make a financial product of some kind and the Nuance there once again is not that you just have a financial product but that you have a decentralized financial product and what that means is that it should be beyond the reach of certain failure modes and there should be certain levels of transparency and risk management that centralized Financial products simply dont have which over time uh continues to be more and more true but but thats kind of the um the general idea cool thank you um a thousand networks thats thats a lot I cant imagine what itll be in 10 years from now its crazy scaling challenges that youd have to face for sure um Ive often seen that you know chain link uh is considered a web three services platform Id love to understand that because Ive always thought about it from the Oracle perspective but if you could share with our community what exactly you know is meant by the web service what three services platform that would be super helpful sure so the consensus I just described um was initially applied to Market data which which gave rise and and accelerated the growth of defy but really that consensus method is applicable to many many things Beyond Market data so its applicable to something called proof of reserves where we prove the solvency sorry we prove the balance sheet of different different off chain systems its applicable to automation its applicable to something called functions which I think is is now being more and more applied to getting gaining access to various Google gcp services and its its actually applicable to cross-chain messaging and even random numbers so so the reason its a Services platform is because its not just about data its about basically all the compute and all the connectivity even cross-chain connectivity that you could want in whats called a trust minimized form and trust minimization is really this um this method of making sure that the system is is beyond the control of others and its beyond the um Beyond certain failure modes basically um so its its a platform because its its moved very far beyond Market data its its the leading its the leading way to do Automation in many cases its the leading source of uh random numbers in the blockchain industry its the leading sorts of many things on many chains um Beyond Market data and so its just kind of like it the consensus can do many more things than data so its a platform is is the reasoning there okay that makes sense appreciate that as youve been you know working on chain link for so long um like what is the goal of chain link you know what kind of world is chain link able you know aiming to enable like where do you see yourself going uh in the future you know for chain link and what does that world look like I think its always been been weird for me that people can renega in their promises and institutions can Renegade their promises as as you know weve recently experienced with certain Regional Banks and has happened historically with with other big entities like Enron and Lehman and a whole bunch of others thats always just been very odd to me um its also always been very odd to me how certain Emerging Markets dont have legal systems that allow them to have you know working contracts and and so those are the two things that I think would be very very uh good to solve so itd be very good to have the um Global Financial system work in a way where certain risks and certain um violations couldnt happen because they were they were written and they were run in systems that simply at a very fundamental base level made those uh made those failure modes impossible and those failure modes come in like waves they go from hey I dont really care about that failure mode because theres a lot of cheap money and everyones making money you know banks are failing and were all happy like thats like a couple of years ago and then you know a couple of things go wrong and everyone starts going crazy and its like oh my God whats going on I I thought the world worked a completely different way um and the thing is it really should work a different way right it really should work in a way where these types of events where large entities renege on their obligations really shouldnt be able to do that not from like a contractual point of view not from a legal point of view but from a physical and Technical point of view like it just shouldnt be possible for them to do that and then the other thing thats very interesting is if you make a system of contracts that isnt as probabilistic and doesnt rely as much on other people making decisions you you basically arrive at a world where even if you have very broken local legal systems in various countries it doesnt matter um and and one of the really good examples of this that I like is crop insurance where theres places in the world now where they might not have a working legal system to allow good insurance companies to show up and offer crop insurance but because they have a 50 phone um theyre able to access smart contract crop insurance and then the Oracle networks and systems that we make verify whether and that feeds into a state machine on a blockchain somewhere that that basically makes the payout happen and and that form of crop insurance is actually even better than the crop insurance you have in developed economies with with working legal systems so so the thing that Im probably most interested in actually is is that leapfrogging so that on the one hand its great if if the Global Financial system works in a certain way and thats the sense in which this technology relates to hundreds of trillions of dollars in value which it does and which hundreds of trillions of dollars in value will be formatted into this into this format um but then I think thatll give rise to a whole bunch of systems that really cant be um cant be defrauded and so your local legal system doesnt matter anymore um and thatll actually be very powerful because people without legal systems will be able to LeapFrog that problem just like they leapfrogged from not having paper libraries to reading the same Wikipedia article that Im reading and and thats thats going to be pretty interesting in in my opinion yeah I like the way you said it earlier about transformation I mean pretty much everything we do no matter what it is needs to be transformed I used to joke about it say oh were all in the digital transformation but with these topics its like a real thing and it actually can change the world so that gives me a lot of Hope um thank you for sharing that perspective um I wanted to Circle back to something you mentioned a little bit earlier uh proof of reserves uh and chain link functions I know that channeling functions was recently announced so thats pretty exciting and then I think the proof of reserves and what happened with FTX uh can we talk a little bit about that and your perspective on on what channeling function brings and and how proof of reserves could have you know saved the day or can save the day in the future yeah so the exciting thing about chain link functions is that you can access multiple services that you couldnt access before in a number of minutes including certain Google services certain Google data sets and so on and thats something that Alan day has done a great presentation on recently that people can look up and find and its been great working with him and other people at Google on on making that possible um I think that the thing that qingling functions will really do is itll increase the breadth of what um of what developers can easily access and itll increase the combinations of things they can combine into more advanced smart contracts um proof of reserves is is actually a very unique focused service on proving the balance sheet and the assets of a certain protocol or of a certain system and the way it would have solved things like FTX is that it would have just continually informed people about what the balance sheet was and were seeing a huge amount of demand for proof of reserves um since FTX because people that make these systems now have reached a point with their users where their users demand proof their users are no longer content to Simply wait for their brand to claim that everything will be okay thats thats like thats not good enough anymore and because thats not good enough there need to be systems that prove those things and proving those things is is what proof of reserves does it proves the reserves now theres other Notions of proof of like proof of solvency proof of liabilities all of which were working through and planning to offer at some point but the interesting thing about proof of reserves is that its a very specific type of cryptographic Truth that before something like FTX wasnt particularly relevant and after was extremely relevant and I think youre going to continue to see a similar dynamic as more and more traditional systems have failures even like the banking system recently where people are starting to think about where well maybe I should have a portion of my value in something with a private key attached to it so that I could access that value in any scenario because scenarios that I could Pro could previously not imagined uh seem to happen in 24 to 48 hours so I I think thats kind of the pattern were going to keep seeing is that theres going to be some kind of issue its going to be a crisis of faith in the system that has that issue that system is going to want to restore faith and its going to choose to do it in a cryptographically guaranteed way and thats really what chain link does is it provides the infrastructure to restore Faith by cryptographically guaranteeing various things and that could be like anything from um proving the reserves proving the assets the liabilities proving that the data used to compute certain outcomes in the application are beyond the control of the application creator cross chain things through something like ccip and making sure that those Dynamics work properly so its really um its really a very wide array of trust issues that initially seem irrelevant but then become extremely relevant in 24 to 48 hours and um thats really what chain link and blockchain infrastructure does is it creates this cryptographically guaranteed version of applications and thats kind of what what were accelerating with functions and with ccip and were proof of reserves and with data and for with Automation and and all the various aspects of the platform yeah the cross chain ccip is interesting to me because in the early days it seemed that everybody didnt want to play along uh and work together with different chains and they said well you know live on my chain or or dont live on any chain kind of a thing so its really a I think a good sign for the community that folks like yourselves are looking in how do we operate across chains and and consider these kind of Concepts because people want to move their assets wherever they want to move them they dont want to be constricted so I think thats a great um thing to think about for sure Im going to pull a thread a little bit on web 2 and web 3 when you were talking about hey why would I want to be in the old way versus the new way I think one of the the really important topics is how do you transition between the two and how do these things complement each other between web 2 and we three web three so what do you think the biggest opportunities are for you know web 3 you know Enterprise opportunities as well as you know combining the two uh living in a world where youre part web 2 and part web 3 you know in the future in the near future yeah sure so there are a lot of D5 applications that are moving faster than traditional Banks traditional banks are starting to slowly move um and so theres these two kind of worlds um theres also a third version where you can just add a component a web 3 component to a web 2 system and make it more reliable we see a number of of web 2 systems adding you know data and other things that are cryptographically guaranteed by chain link networks to make their system more reliable um so theres this kind of world of startups then theres the Enterprise Capital Market slash institutional world and then theres the web to application world where you could you could add on various cryptographic guarantees through decentralized infrastructure those are basically the three directions um I think all three of those directions are fruitful um I think it really it really depends on ah well I mean it depends on how much value flows into the public blockchain economy versus the private blockchain institutional economy versus how many things fail and web 2 applications want to prove things to their users so like one good example of the third one is before text messages werent end-to-end encrypted but now they are right and everyone uses things that are intend encrypted thats an example of the third one where end-to-end encrypted technology was suddenly valuable because people didnt trust entities with their messages anymore the institutional one really depends on uh institutional adoption which is slowly happening and the defy and startup one kind of depends on how much money flows into the blockchain industry and if a lot of money flows in because people want to use D5 they want to get nfts or whatever then those startups kind of go you know go up and to the right and therefore you know that becomes the way that people interact with this its really been between those three its uh its not clear um which one of them is gonna is gonna shoot out first from our point of view were just doing uh all three um were powering the vast majority of of the blockchain applications that are more advanced um that that need things like Market data and random numbers and so on were working with a lot of top Banks and large uh Global Market infrastructures um in in very very interesting and increasingly Advanced ways that I think will at some point have a real path to go into production and then we are um also working with various web 2 systems that want to have an additional um guarantee without completely rewriting their whole system in a blockchain somewhere um so those are the three and and all of them I think will happen at their own pace one of them will shoot out and then when they come down another one might shoot out and come down but I think all three of those will will continue to happen okay yeah I think thats a really important subject I feel that were going to be in this in this middle ground for a long time so however we can bridge the gap can allow more Enterprises to get involved and more people to get involved um really cool thinking on that thank you for that um okay uh I guess one last question uh before we move on Im just gonna ask real quickly you know when you know how and when do we get to become mainstream with crypto Ive been in this for you know obviously less time as you uh you keep plugging along so thats great but like when do you think we hit critical mass on that on that S curve do you think thats uh you know just a general question I guess when do you think that happens and what does it take uh well those are two very big questions so so on the on the first question of when do I think its going to happen I dont really know because I am consistently overly optimistic its March in March of every year for the past five years basically same thought process this is the year defy all the way you know smart contracts all the way institutional adoption all the way thats march by the middle of the year start thinking well why isnt it happen yet towards the towards the end of the year its like next years the year for sure so so Im Im Im generally um skeptical about a number of ideas because I really want to test them and I really want to make sure they have marriage but on this question of when adoption will happen Im Im just consistently overly optimistic so I Im not really a good um a good barometer for that you can you you can you can ask me this same time next year Ill tell you the same thing that its like this is the year in in terms of what needs to happen um you know there are about four very key problems that need to be solved um first problem is um scalability so the systems can hit this the throughputs that people need for real usage at scale um like gaming and trading and all this stuff um second one is connectivity so the systems can be interconnected with existing data sets existing back-ends existing everything thats the problem were very focused on third one is privacy um people would really are used to privacy and expect privacy and many institutional cases need privacy from a legal point of view we also work in that realm and we have a number of zero knowledge proof things that make privacy much easier and actually quite possible for many situations that previously are not historically possible and then the final one is usability where the private key storage private Key Management private key security Dynamics are not good right like the average user cant really deal with private Keys very well still its not a solved problem they have to keep a seed phrase theres no mobile Hardware key store that can just abstract away this problem key recovery is a huge problem right so if you even had a hardware key store on a mobile phone and you lost that mobile phone phishing or something and found the river like what are you gonna do you just lost your life savings you know its its its not a solved problem right so those four problems getting solved eventually that all kind of like you have an intersection of those problems being solved enough and and then the developer developer explosion comes the developer kind of like lets build everything that we wanted to build over the last 10 years in two years and then you have like uber like a Netflix like and eBay like use cases um appear overnight and then its obvious right and wow how obvious why why didnt how could we think that anyone would want an application that could screw the user why would anyone ever want that obviously every everyone wants applications that you know they have a level of control and reliability from and thats obviously what what all applications should be um but how quickly that happens I dont know unfortunately but it also doesnt matter because Im just going to keep doing it I love your optimism you know and I think that to be in this space you really have to have optimism because there are so many ups and downs and I love that you reset your clock every March and youre like this is the year and I dont care what happened last year but this is the year so appreciate your activism for the community and what you do in that respect uh so really appreciate you joining and I think its been a great chat um looking forward to seeing you know what comes next for you as well great thank you thank you for having me Perfect all right thanks all foreign Hey web3 frenz, Excited to share our web3talks fireside chat with our special guest Sergey Nazarov, Co-Founder Chainlink Sergey shared his thoughts on the recent release of Chainlink Functions, the future of cross-chain interoperability, bridging the gap between Web2 and Web3, and much more. Thank you Sergey for joining! Hosted by, Marlon Ruiz Google web3 community lead customer engineer crypto web3 blockchain chainlink ccip google or googletechtalks web3,blockchain,chainlink,