 Thank you, David. We're gonna start right now. And if you can, please are you streaming on YouTube too? Okay. Thank you your life Okay, thank you. So we're gonna start talking in Portuguese right now. So Thank you, David was for your support your patience. You're you're nice all the time Let's talk. Let's start talking Portuguese Magno No, sir. Can you do moderate or the same thing? No, sir. Hosting the town in Marcello. Palavra. Start with six in on me the capital of Brazil. The hyperactive foundation. I can't open a success on sempre dizendo que nós temos aqui um ambiente aberto. Nós somos open software mas nós somos open minded to nós temos esse espirito da Linux Foundation to comunidade aberta o diálogo a cooperação aceitação de ideias de pontos de vista de todos os tipos de conhecimento de todos os tipos de interesse e de de nível de área de trabalho todos aqui são muito bem-vindos. All are welcome here as they say in the hyperactive foundation. Todos são muito bem-vindos aqui nós teríamos essa noite uma exposição sobre Hyperledger Fabric e Hyperledger Bezo com muitos sites eu quero dizer pra vocês que eu vi a acompanhei o Magno e o Marcelo trocando mensagens elaborando material a vários dias eles estão elaborando esse é o conteúdo para esse evento inclusive no final de semana estavam trabalhando então com certeza eles tem um conteúdo muito bom preparado com muito carinho e muita dedicação que vai ser certamente incrível essa noite nós temos bastante gente chegando quero passar a palavra para o Magno fazer a abertura e eu ficarei aqui nos bastidores dando suporte Magno e Marcelo a bola tá com vocês muito obrigado gente legal legal boa noite boa noite boa noite bem-vindos a mais um Hyperledger Brasil talks é mantendo a nossa disciplina aqui todo mês tem um né isso que é muito bom para a comunidade é e se you are here at YouTube please turn on the subscriptions and the plage etc e pessoal o propósito dessa live dessa reunião aqui é aproveitar a oportunidade que o Samuel da goledger que eu citei o da goledger vai fazer uma apresentação sobre o Hyperledger Bezo um pouco mais detalhada e nós aqui resolvemos fazer uma introdução em relação Hyperledger e por que não uma comparativa né em relação Hyperledger Febre então o grande a grande alavanca dessa apresentação aqui é no final um comparativo também né e qual seria a melhor aplicável para uma arquitetura de sistemas computacionais meu nome é Magnus Valkant e eu sou engenheiro de software e também sou voluntário aqui do Hyperledger chapter Brasil eu gostaria de apresentar o meu Marcelo Cremia Marcelo se apresenta pro público por favor boa noite pessoal bom eu trabalho aí com esse pessoal já um tempo aí o Magnus Juselho aí trabalho assim como voluntário né por assim dizer eu trabalho com blockchain já desde 2017 com diversas plataformas sempre bastante atuante aí com o Hyperledger Febre Hyperledger Bezo a plataforma Hyperledger em geral eu produzi aí dois treinamentos que depois eu vou dar mais detalhes aí mais pra frente no curso e atuando a NTI a vida toda e aproveitando essa oportunidade para compartilhar um pouco do conhecimento com vocês né como o Magnus falou a gente vai dar uma passada aí sobre o que é o Hyperledger Bezo né dá uma orientação em geral que que é o que é o Febre que fala um pouco sobre certificação um pouco do mercado de trabalho fazer uma comparação de essas duas plataformas vai ter bastante coisa bacana e Magnus se quer que eu coloque aqui para apresentar os slides e daí você começa aqui falando aí isso que a gente ensaiou né e isso aí por favor ok deixa um recado novamente aqui para o pessoal tá e se você está vendo essa apresentação no YouTube você pode ativar automatic translation e subtitles em your language beleza Marcelo tá e você poder compartilhar sim você pode achar aqui cada vez é uma plataforma zoom é teams é outras a share screen tá aqui beleza então conseguindo ver pegou sim pode colocar a moral de apresentação isso tá agora a tela toda legal a tela toda então vamos lá eu vou passando aqui depois eu entrego para você e o primeiro lembrando né que é uma introdução Hyperledger Bezo e Hyperledger Febre e como introdução nós vamos falar dos elementos essenciais e de comparação entre as plataformas aí o grande show que vai ser dado pelo Marcelo Kramer logicamente né que inclusive desenvolve bastante material aí tem um curso no YouTube eu vou acompanhá-la aqui pegar as dúvidas do público e fazer algumas perguntas capciosas perguntas legas né e trazer aqui a visão do aluno né do pessoal que tá aprendendo ainda tecnologia tá beleza Marcelo pode passar para a próxima slide favor a gente achou por bem trazer essa reflexão aqui sobre os modelos mentais para redes descentralizados né então no passado ser um passado recente e os sistemas eram fechados e centralizados então você tinha um sistema que cuidava de um ponto de outro ponto de outro ponto existiam muitos silos né então era difícil precisava de conexão né era complicado né aquele tempo ainda que a cloud compute não tinha avançado então tivemos advento aí de muita coisa na cloud compute né Amazon services Azure e Google cloud etc e muitas coisas migraram pro modelo serverless pro modelo é de open source né e em cloud compute né então muita gente achou que a seu colocar na cloud tá suficiente é porém uma coisa que muitos já acordaram para isso é que a cloud não te dá logicamente 100% né porque já aconteceu era um episódio de alguns sites alguns data centers de grande fabricante ficarem fora e eventualmente o site ficou fora além disso ter redundancy cloud compute custa muito car né fazer redundancy inclusive fazer redundancy inclusive multi multi continental é muito car né então o mundo vai migrando palatinamente aberto e descentralizado descentralizado que veio muito por base aí do surgimento do blockchain das delites das redes descentralizer led applications etc então é pra isso que o mundo tá mudando hoje que também é um ambiente mais resiliente né então lembrando aí antes era fechado centralizado nós migramos o ambiente um pouco mais aberto em cloud computing e estamos aí indo para um ambiente aberto e descentralizado próximo Marcelo por favor lembrando alguns conceitos básicos né sobre as características de blockchain o blockchain é uma tecnologia de registro distribuído ela é baseado em criptografia de chave pública né na qual você tem uma chave privada do usuário uma chave pública que é tornado público que é executada numa rede descentralizada tem uma série de registros que são imutáveis eles são imutáveis e se utilizam os recursos de criptografia para prover essa imutabilidade a blockchain prover rastabilidade dos registros fim a fim você pode entender saber buscar informação na cadeia de blocos como é que isso aconteceu a integridade dos dados a manutenção da integridade na linha do tempo uma transparência nas transações para quem participa da rede para quem tá dentro da rede por consequência da transparência das transações ao ditabilidade do próprio sistema é que permite é uma verificação de ponto a ponto por consequência resistência fraudes é um recurso adicional que foi embutido nas blockchains foi a automação de contratos inteligentes isso é ver depois do bitcoin os algoritmos de consenso que tratam é dessa atualização dos dados pela rede descentralizada os dados que trabalham os registros imutáveis e trabalham também a integridade dos dados e a própria rede blockchain ela funciona como uma terceira parte confiável então as partes delegam a a tecnologia blockchain a confabilidade é daí que surge a necessidade a oportunidade de se eliminar a contratação de um terceiro para fazer vitrage a contratação de um cartório e se convidar e se confiar na rede blockchain então a gente acho que vêm trazer algumas dessas características porque elas apoiam o que a gente vai demonstrar aqui para vocês em termos de introdução a hiperegibez em tradução a hiperegifério Marcelo passo pra você aí é qualquer coisa eu interrompo aqui eu pergunto alguma coisa durante a apresentação a audiência por favor escrevam aí quem tá pelo zoom no chat as suas dúvidas que no final a gente vai buscar que responder quem tá pelo youtube por favor também escreve as suas dúvidas no final a gente vai procurar responder Marcelo tá contigo Maravilha Magno é tão conseguindo ver minha tela cheia porque eu coloquei aqui uma da interface para conseguir me enxergar aqui enxergar o pessoal posito tá sendo exibido a tela cheia maravilha então tá bom pessoal vamos começar então realmente do começo vamos entender antes de falar de hyperleder fabrica antes de falar de hyperleder Bezo entender que que a hyperleder e antes ainda a gente entender a hyperleder vamos saber que existe a linux foundation a delinux foundation é uma fundação a maior fundação de software open source do mundo e dentro dela tem a hyperleder foundation então vamos detalhar um pouquinho mais a linux foundation ela já hospeda hoje cerca de 850 projetos como vocês devem imaginar o linux é um que ela hospeda né foi daí que surgiu nome aí que começou tudo e foi crescendo aí exponencialmente já são mais de 17 mil empresas contribuindo no mundo todo mais de 750 mil pessoas que contribuem com código ela tem uma quantidade uma diversidade muito grande de treinamentos online presenciais certificação tudo mais então durante esses anos já tem mais de 2 milhões de desenvolvedores treinados em algum curso da linux foundation e por semana são adicionado mais de 51 milhões de linhas de código realmente para o sistema e dimensão do que é linux foundation e aqui estão alguns dos projetos da linux foundation a gente tem aqui o conhecido linux né o pinguinzinho aqui que todo mundo já já está acostumado a ver o Kubernetes para quem não sabe é da linux foundation temos node js cloud native Jenkins node red tem muita coisa e entre eles o hyperleder foundation né então quando eu falei que a gente tem aí cerca de 850 projetos essa é apenas uma pequeninha a mostragem do que eles têm e as empresas que estão por trás que já são mais de 200 empresas que colaboram com os seus profissionais com as linhas de código com o evento com tudo mais são grandes empresas do mundo todo de diversas áreas a gente tem e gigantes né da tecnologia como Cisco Google Huawei AWS a gente tem empresas da área financeira de eletrônica automotiva e a gente tem empresas inclusive brasileiras né como o itaú aqui que vocês podem ver e agora falando da hyperleder foundation que como vocês viram é uma dessas é organizações fazem parte do da linux foundation a hyperleder foundation hoje ela já tem uma quase 100 mil membros no mundo já estão falando mais 98 mil espalhado aí praticamente todos os cantos do globo e tem grupos né tem uma organização hierarca muito grande que os voluntários resolvem estudar por exemplo vamos fazer um grupo de estudo para ESG ou para supply chain ou para alguma qualquer outra área de negócio ou área técnica eles formam grupos então existem mais 180 grupos e mais de 80 países a hyperleder foundation ela é a fundação que trabalha exclusivamente com block chains e ela é uma coisa muito dinâmica né esse slide eu vivo né quem acompanha perler de alguns anos sabe que isso realmente é dinâmico porque ela se devine os projetos que ela chama de graduated né os projetos que formam para a produção e antes disso eles estão incubados né o incubating que é desenvolvimento então a gente tem aqui em produção o hyperleder fabric e o Bezo que é o que a gente vai falar hoje o fabric foi o primeiro projeto aí para a produção a gente tem também o áreas tem o indica identidade o Iroha cacti o firefly que é bem recente como graduado salto e aqui a gente ainda tem todos esses aqui desenvolvimento né aqui eu passo bem rapidamente porque cada um desses dá uma palestra tranquilamente pode falar curiosidade é esses projetos que tem produção e tem as projetos que estão em incubação quando que o projeto passa a figurar como versão um ponto zero é bom e a hyperleder lá tem uma série de critérios muito formais para o projeto passar de incubação para produção então quando você está no github desses projetos e vai ver que tem lá tipo um semáforo us a então ele passou aqui no check list de sei lá de código não lembra agora de cabeça então tem uma especificação muito rigorosa tudo está disponível quais são as regras como funcionam para ela passar de um nível pro outro tá e lembrando que os projetos estão aberto a participação do fundo que colaboração né Exato inclusive esses que estão incubados eles também tá o código dele tá totalmente disponível no github a diferença que o graduado né a chancela dela olha isso daqui já tá madura o suficiente para usar em produção nada em pé de que você pega um projeto desses que tá incubado faça e o seu for que e até utilize mas aí é sua conta e risco né o ideal é você esperar realmente eles irem para a produção para começar a utilizar beleza obrigado imagina e bom então vamos entrando agora aqui sem mais delongas no hyper leder Bezo é um blockchain que trabalha também com EVM né que o ethereum virtual machine isso é uma grande vantagem do Bezo a gente vai explorar durante a apresentação e um pouquinho da história do Bezo o Bezo ele foi criado como um cliente ethereum foi desenvolvido ainda como sendo um software da consciences foi lançado com outro nome né o nome pantheon isso já praticamente cinco anos então muita gente vê o nome Bezo e fala puxa uma coisa recente eu acompanho os projetos da hyper led para um tempo e não tinha ouvido falar do Bezo então na verdade assim ele teve o nome pantheon depois é teve outro projeto que era o bull roll ele foi ele teve ele mudou de nome mudou de mãos mas assim é um código que tem vindo aí evoluindo ao longo dos anos né pelo menos cinco anos a gente tá falando né porque ele começou em 2018 2019 aí sim né que o código dele foi doado para hyper leder e entre os projetos da hyper leder foi o primeiro a rodar em rede pública porque os projetos da hyper leder tem essa característica de rodar em rede privada e então aqui em 2020 já tamo foi falando de três anos que ele passou desse status que a gente tá falando de incubado para ativo né ou seja ele foi para a produção algumas características básicas deles ele é um projeto e tiram open source ele é escrito em java ele sença a parte 2.0 o que é mais comum utilizado aí pelos block chains da hyper leder ele é baseado na máquina virtual e tiram a evm e ele aceita os smart contracts feito na linguagem solid it então essa é uma grande vantagem quem já trabalha com o itirium pode já tem é o conhecimento da linguagem é o mesmo o smart contract você fazia pra pra itirium inclusive com as ferramentas como a gente vai ver muita ferramenta que você utiliza para ambiente desenvolvimento no itirium você pode utilizar aqui no bezo e ele é uma rede feita as aplicações corporativas também em rede privada então você pode usar para a rede pública rede privada a rede privada você tem muita segurança tem um desempenho já aprimorado privacidade permissionamento e ele trabalha com diversos tipos de protocol de consenso no proof of authority você pode usar o que bft bft 2.0 clique você pode usar o proof of work que era o protocolo anterior da itirium não é mais utilizado que é o e thh hash e o proof of stake que é o atual protocolo da rede itirium em termos de interface o bezo ele tem um comando de linha em uma pc que permite executar manter monitor aos nós na rede itirium e é uma interface extremamente poderosa você tem uma quantidade comandos muito grande para saber em detalhes tudo que está acontecendo na sua rede e para você de maneira fácil né uma api no formato padrão de um rpc que você pode mandar os comandos e você pode usar essa api tanto em rpc sobre http ou via web socket e também você pode usar esse método de assinatura né o pub sub o prusa smart contracts como eu estava falando você tem todo esse universo aí de ferramentas que já usar na itirium como truffle remix web 3ds e mais outras ferramentas mais outras bibliotecas então aqui eles não reinventar a roda né como testa compatibilidade com evm tudo que você usava no universo itirium você pode continuar utilizando aqui e bom a evm né é conhecida por ser o que a gente chama de uma máquina virtual touring completa ou seja ela é o que a itirium se predispõe ela se chama de um computador mundial ou seja ela é como se fosse um único computador com todas as funções definidas por touring né quando os grandes computólogos praticamente um dos primeiros aí que definiu o que que essa máquina touring né é uma máquina que tem uma programabilidade muito alta em termos de algoritmos de consenso a gente tem aqui como eu estava falando é o proof of authority que você utiliza quando os participantes se conhecem então você está fazendo uma rede privada você pode usar o ibft 2.0 por exemplo que a todas transações e blogs são validados por contas aprovadas isso quer dizer o proof of authority você tem algumas contas que são pré aprovadas que elas sim farão a validação desses dessas transações e blocos né são os validadores você tem esse outro protocolo chamado clique que também é um poa né um proof of authority que ele é mais tolerantes afalhas que o ibft porque ele permite que até metade dos validadores por exemplo você tem uma rede aí com digamos vinte nós tem é seis validadores se desses seis três saírem do ar ela continua funcionando com esses outros três então dependendo do modelo negócio pode ser mais interessante se ter essa rede clique que ela mais tolerante com a ibft que a ibft se você precisa de algo que realmente você precisa daquela quantidade de validadores ou você não precisa de uma tolerância tão grande afalhas você usa ibft por exemplo e o proof of work que é outro algoritmo de consenso é esse protocolo que se usava na mainnet do itílio né antes de entrar o proof of state Marcelo os voltam lá disso só lembrar pra audiência que o ibft né é a base de estambul bizantini fault tolerance né que é aquele protocolo baseado na teoria dos generais bizantinos e o consenso pelo generais bizantinas que a gente aprende aí quando estuda a teoria de blockchain beleza pode ver perfeito magnol então mais um pouco aqui de características do beso em termos de armazenamento ele utiliza o chamado rocks db que é um banco de dados que trabalha com um elemento do tipo chave valor e quando a gente fala em blockchain na verdade a gente pode dividir em dois grandes elementos o que é chamado de blockchain em si que é o dado aquele ficar mazenado de maneira imutável que lhe é composto por um cabeçalho que forma cadeia né o chain de dados da blockchain nesses essa cadeia de blocos e além do cabeçalho você tem o corpo do bloco que contém lista de transações e o recimo da transação com os metadados os dados referentes àquele próprio bloco e a outra parte é o estado global chamado world state que é aquele valor que é mutável valor que tá em memória né como se a gente fosse fazer uma analogia com memória RAM de um computador é o valor que tá lá para ser trabalhado antes dele realmente fazer parte do blockchain então cada cabeçalho tem uma referência esse estado global e ele é mapeado né com esses endereços de contas e em termos de monitoramento existe uma grande variedade de ferramentas que podem ser utilizado para você monitorar a saúde do teu blockchain como tão os nós como tá o desempenho da rede então existe esse padrão prometeus que utiliza e essas métricas de blog usa também a pay days um rpc que é padrão de mercado pro desempenho da rede se pode usar também ferramentas com blocks for block splotter with a guy stat e em termos de privacidade você consegue ter essa privacidade as partes envolvidas de modo que as partes que não fazem parte de uma determinada transação não acessa nem o conteúdo dessa transação e também não acessaria a lista de quem participou dessa transação então é legal que o Bezos ele tem toda essa característica de rede privada nela entende publica e a rede privada garante realmente essa privacidade bem grande e existe outro termo que é o permissionamento que ele é diferente da privacidade né digamos que é mais uma outra camada de segurança que ele permite que só algumas contas e nós especificadas part participem né do dessa rede né quer dizer quem vai poder entrar na minha rede quem vai fazer parte de quem vai poder fazer parte quem permite que aquele aquela entidade faça parte da minha rede quem que vai tirar ela da rede quando for o caso então isso tudo é considerado permissionamento e falando um pouco agora mais em detalhes a gente tem aí os chamados static notes no Bezos que são um conjunto de nós confiáveis configurados são nós que você já vai determinar esse nó realmente ele faz parte da minha rede ele é confiável então isso dá um monte de facilidade ele pode ter outros papéis na tua rede também e você tem também os chamados bootnotes que são os nós que fazem a parte de discovery de descoberta né é você encontrar os outros elementos que vão fazer parte da tua rede né os outros pares as outras partes que vão fazer e tem static nodes que você mesmo configura que elementos vão fazer né você não tem o service de descoberta aí digamos que você já é configurou um um arquivo que tem lá listado quem faz parte dessa rede o voltando aqui ao proof of authority né o poa ele explicando um pouco melhor agora que que ele é ele é um conceito foi proposto lá atrás em 2017 pelo gave um wood o doutor gave in wood foi um dos fundadores da itirium ele é baseado em reputação ou seja é o quanto que você colaborou de uma maneira boa para rede né o quanto você é confiável e isso vai garantir que você possa desempenhar ou não algumas funções na rede e ele também garante que blocos de transações são verificados por por participantes pré aprovados né que a gente estava falando agora então ele pode receber o direito de se tornar um validador e ao incentivo para manter essa posição nessa reputação não é manter essa autoridade e é bacana também que ele por segurança não permite que um mesmo validador aprove vários blocos consecutivos então ele vai distribuindo aí quem é o validador das operações a ópera a o validador de cada bloco que é formado a gente tem aqui três protocolos de consenso no beso o que bft e bf opa passei aqui e o clique isso aqui né a gente é visto quando ele se conhece é o nível de confiança ele garante um tempo de bloco rápido tempo de vazão das transações maior que o proof of work e um grupo de nodes aqui para trabalhar como validadores existe esse conceito aí de validadores e o conceito de assinantes então são dois papéis diferente que o nó pode desempenhar na rede e os nós validadores e os assinantes eles votam existe tão esse sistema de votação de quem vai quem pode ser inserido e quem vai ser removido da rede e aqui tem a diferença então entre esses protocolos de consenso quando que eu devo usar o que bft e bft e um clique então tem alguns critérios você precisa de uma finalidade imediata que quer dizer isso que a gravação do teu bloco ela seja feita e seja irreversível é não permitindo forks por exemplo então aqui você escolhe qual que é o mais interessante o caso o número de validadores que você precisa então cliques pode usar só um né mas você não tem redundancies tudo você tem vantagens vantagens você tem que estudar que que é melhor por seu caso o que a gente chama de vivacidade em vez de ser live nas né difícil traduzir por uma palavra exata em português mas isso é quanto é o quanto tolerante aí é essa rede né como a gente viu aquela clique ela tem uma tolerância maior isso pode ser bom então caso não para alcançar o consenso edição de blocos é essa são menos rápidas a clique é mais rápida o número de validadores é recomendação não então tudo isso são argumentos para você escolher aí o melhor protocolo para tua rede pronto agora entrando em privacidade privacidade por definição é a garantia e que o conteúdo das transações já visualizado apenas pelos participantes daquela rede e essa lista dos participantes também não é aberta ao público então além dos você não saber quem tá de fora não saber o que tá sendo transacionado ela não vai saber nem a identidade de quem faz parte da rede é uma camada de segurança a mais e o bezo ele tem esse um gerenciador transações privadas que é chamado terceira e foi um software que é desenvolvido pela consciência e a gente vai ver aqui mais pra frente que é um componente que ele pode ser plugado na sua rede se você precisar das transações privadas e quando você tá com o terceiro você tá utilizando essa ferramenta então então pra cada nó que você fez você precisa ter um nó desse terceira também então é como se fosse uma rede paralela nessa tem o nó da rede bezo e tem o nó da rede terceira então você por exemplo que é um nó da rede você na verdade tem esses dois nós que você vai ter que gerenciar e esse gerenciador de transações vocês também talvez já tem ouvido falar no nome enclave ele é conhecido também por esse nome tudo bem por aí pessoal é tendo qualquer dúvida vocês vão me interrompendo que eu tô aqui acelerando que tem bastante coisa bacana para a gente falar tá tudo certo quem quer fazer alguma pergunta diga lá Magno é uma pessoa perguntou sobre o o protocolo de consciência que bft você pode só retornar naquele item lá e só para poder abordar um pouquinho tal que alguma dúvida específica é só a cobertura do que bft tem relação bft as duas são muito semelhante né exato os dois são são bastante semelhantes sim são detalhes muito pequenos que diferenciam na hora que fora implementar uma rede realmente você tem que dar uma olhada ali no nível do código pra ver que que é mais interessante pro teu projeto né de modo geral de características são iguais mas esses poucos detalhes vão diferenciar eles né e aí já apareceu uma pessoa que tá interessada provavelmente em rodar da mar na própria máquina a pessoa perguntou o seguinte a por ser java é para executar o deso da minha máquina que ele é muito pesado ele exige muita memória para poder tá qual o perfil de máquina seria necessário certo ele é pesado sim eu acabei rodando numa máquina virtual na ws e porque assim é pesado sim mas se você tiver uma máquina digamos lá pelo com os oito e pelo menos oito giga de ram processador aí um core e sete né isso falando em ambiente Intel windows e você consegue rodar assim a tua máquina vai ficar bem linda né para se fazer outras coisas por isso que é bom se deixar rodando num cloud num servidor porque você consegue rodar na tua máquina mas assim você exige muito dela o ideal é se você não tiver um servidor é fazer isso né pega um a ws um eijur e na verdade acho que eu utilizei os dois a ws eijur e você pega lá um servidorzinho que você dá um start stop quando você quiser e aí você acaba não gastando muito dinheiro e deixa lá rodando né então com a base você quer saber pra não deixar a tua máquina e escravizada aí com essa aplicação não sei que você queira usar só pra isso tá é beleza é mais pra frente eu faço outra pergunta no mods item do da sessão do bezo vc dá uma parada em pavor a gente poder recuperar as perguntas sobre o Bezo vamos em frente perfeito então vamos lá agora falando mais that's what I was talking about just now, right? When you're working with the third as a tool of privacy, you have to have a node of your network and a third node. So, let's say Alice has her node, then this network works with the third, okay? So, I need to have a third node that will maintain privacy, Bob has his node and a third node. So, practically, you duplicate the number of nodes of your network. Because private transactions pass from the node of the network to the third node, the third node that it makes, it encrypts and distributes directly. So, the transaction goes from your node that you had for the third node, and then, without the third node, it sends this transaction to the other part. And here we talk about permission, which is different from privacy. Permission is the question of who can enter the network. So, we have here, symbolizing two marginals there wanting to enter the network. And the permission, the policy that permissionally did not let them enter. So, this restriction of access, we have a whole governance system to control who allows another to enter or not. So, there is that vote, everything else that we were talking about. This is our permission. And there is also the permission of accounts. So, you guarantee here the onboarding, because this person already has the permission to enter the network, but it needs, let's say, to register and give the data of account, identification. So, all this is done for the permission of accounts. You have the user account here at the address level, we are talking about. And the admin here is that it will allow you to do this entry or not, and see what privileges it has on this network. Well, so here, kiss, we finish the B module, we will enter the Fabric module. There are more things that you were going to bring. Roberto Góez asked an interesting question here. Can we use the block explorers of the Ethering network to explore the blocks of a network based on the BESO rappelage? I think, in theory, yes, it could even be used to explore the blocks of the BESO rappelage. But there are restrictions, since the implementation of the BESO is aligned or very well aligned with the Ethering standards, right? What do you think, Cremia? I think it's exactly what you said, in theory, yes. Because you have the code in itself, it can be used both to explore the blocks of the Ethering and the BESO rappelage. Just for example, if you enter the explorer of the Ethering, the public explorer, it is already directed to read the blocks of the Ethering, right? It will not read your BESO network, but you are talking about a private network, right? So you have, and when we are talking about a private network, you have other types of explorers, right? You have the BlocksCout, you have the Blocks Explorer, you have several others that you can use, because maybe you don't need to leave it public on the web, as is the case of a public network. So, first of all, you have to see, my network is public or private. If it is public, I can use the same code, I can make a fork on the explorer of the blocks of the Ethering, for example, and put it to direct, right? I put the network with the DIO, the TNID, right there on my network, to use. Or you use others, right? Which are already made specifically for the BESO, being public or private. And then there is a second question here from Paulo César Kozler. When you use the Tesla, all the leaders, all of us on the network must be configured with Tesla, or can you have a mixed configuration? If you want to participate in private transactions, you need to be using Tesla, the third one, actually, I don't even know what the right term is to say, but if you are not going to have private transactions, OK, it's that without it, you won't be able to communicate with that node, right? That node that has its third node connected to it, it will look for your third node to communicate. If you don't have this private transaction, you don't. You will make transactions that don't have the privacy of data. Let's say the third one is a plugin that enables the network's operation to have a higher level of privacy of data. Exactly, you can run the third node without the third one, which is the normal mode. If you want, you have to install the third one to configure it to be able to use it on your network. I'm out of luck. Let's move on. Let's continue now with the session about the Fabric Highlight. Wonderful, let's go. So, the Fabric, which may be a well-known old man with a large part of you. It allows me to interrupt you. Guys, we're going to make a comparison later, OK? So, we're going to talk about Bezo, we're going to talk about Fabric, and then there's a little comparison here that we assembled to be able to awaken the attention points for the turbo in relation to the system architecture, OK? Stay with us, OK? Stay with you, Cramer. Exactly, Magnus, well-remembered. Well, the Fabric we're going to talk about is going to talk about these main components of it, which are assets, assets. The chain codes are the smart contracts, the free reason, the ledger, the privacy, the security service and the association, and the consensus. Let's go into each of these modules. Activities is, let's say, the central element of the Fabric. It is what is your good that you are going to deal with in your system. So, be it an immobile, be it a good consumer, something tangible or intangible, such as contracts, intellectual property, it is what your network is going to transition. And the operations with these assets are done using smart contracts, and these assets are represented by the Fabric as a pair of key and value collection. And the changes are recorded in the channel's root book. This is a very cool concept that the Fabric has, a channel concept, which allows you to isolate a set of transactions between certain network participants so that others don't know what's going on. This is a very fundamental thing of the Fabric that we're going to see in the future. These assets can be represented both in binary format and JSON format. And the chain codes, which is what a lot of people know as smart contracts, smart contracts. A question that always comes is what is the difference between chain code and smart contract? In fact, the code you write, smart contract, is a smart contract. Chain code is the name that the Fabric gives so that when you unpack, you create your .jar file, which is the one that will be implanted in your node. So whenever you're talking about you need to implement this logic, you need to see if its version is correct, you need to deploy it, you're talking about chain code, you're talking more about the physical level of the file. When you say, I'm going to write my logic, this is smart contract. So you're going to find, in many points in Fabric's literature, which is used alternately in code and smart contract. So it's not a big concern. It's just to have this idea that when we talk a little more physical, another more logical, but at the end of the story, if you're talking about one of these two terms, you're talking practically the same thing. So what is it? It's the software that defines the assets, the instructions of the transaction to modify the state, the logic of the business, it's your program, let's put it that way. It guarantees the application of the rules to read or change the pairs and value keys and other information of your state data bank, which is what I was talking about before, which I talked about in Bezos, which is what hasn't been recorded as what is in your RAM memory. The functions are executed in the data bank, of the initial reason, through a transaction proposal. We'll see if you construct a transaction proposal that needs to be approved by the validators to be recorded in the blockchain. The result of the execution of the Chancode is a set of updates of this pair of key and value keys that can be sent to the network and applied to the reasoned book of all pairs. So that's it, it was approved by your transaction, it will be replicated for all reasons dedicated to each pair that is part of the network. The pair is a participant of the network. Marcel, come back here quickly. Come back. I have a curiosity. Could we say that the Chancodes are the blockchain procedure story? Yes, the same way that the smart contract is also. The procedure story, you're talking, for example, of an hour-long database, something like that. I'm from that time, too. Before the time of the Buck and the Milene, that's it, the person who is the oldest of the old. Look, the old was the procedure story, now it's the smart contract. And that was kept, it's a program that is kept inside the database and you run it. It's the idea of the Chancode, yes. It's that guy you're going to call to execute the business logic. So it's a very cool analogy, that's it. It's the logic of the business, before the recording of the data in the new database. That's right. He's going to do your transaction proposal. So let everything be ready. So a new state here, for example, your phone, you sold it from João to Marcos. So, OK, so the new owner is Marcos. All the validators agree with this logic that the Chancode, the procedure story, has changed from this owner to this one. Is everything OK? OK, so let it be recorded in the database, in our case, in the blockchain. I'm out of the ball, let's move on. Let's go. And here's the book, Razão, the ledger, which is where the transactions are recorded in an immutable way. So that's what we were talking about now, the state transactions that are the result of the Chancode. So Chancode has changed the state of the asset and it makes this transaction proposal, it's sent to the participants' parts that everyone is validating, then yes, it will be recorded in the ledger. Once it's recorded in the ledger, it's immutable, all the participants get their copy of it. All the participants, let's say, are part of the channel. That is, who has to receive that transaction that is part of that channel, it will receive it, who is a member of that channel. So if you don't have to, all the participants of the network will have exactly the same ledger. They will have the ledger that the channel assigns that is part of it. The consultation is always based on the key, you can do a search there for the interval, a search for the key and compose, it has the signature of all the participants, it becomes immutable, let's see if the transaction is validated and confirmed. The channel's free delivery has the configuration block that defines its policies and access control lists. Privacy, the fabric, it has this immutable free delivery and Chancode is the guy who will manipulate the current state of the assets that are recorded in this book. It can be segregated, so you have in the fabric, you have the level of Chancode, you have the level of the channel, which is already a privacy, so let's say you have it on your network, there is a network of supermarkets and suppliers, then you will have a channel for that supermarket with its suppliers, then you will have another channel that is from that supermarket with, it can be even the same suppliers, but so that each supermarket is on your channel and does not see what the other is doing. So this is the privacy that the channel propices. And we will also see that there is another level of privacy that is called Private Data, collection of private data that gives a much more refined control beyond the channel because it can be that inside that channel you still want to segregate a little more. But I can't... For a specific type of information, a specific type of transaction, I can't let everyone in this channel have access, just some, so that you don't have to create another channel that is an entire infrastructure, but you will have to create, you can use Private Data, which is another use, it is a little more complex, this private data set called collection and we will not go into more detail, because it has to be understood well, it is very complex how it works, but it also has this option. And it still has the option of cryptographing the data in part or totally, and only those who have the key, of course, will be able to decrypt and be able to access these data. So you are seeing that we are talking about three levels of privacy, the factory is really very good for that. Security and association services, which is a membership part, which is who will say, using all that public key infrastructure, of PKI with cryptographic certificates, who can be part of the network, what are the papers that it can perform on the network, the channels that it accesses, that permissioning part, who will join the channel, what level of privacy, confidentiality, all the more, that we will see that uses this PKI infrastructure, which is common, practically all security mechanisms from the bank that you use, all this digital certificate concept and there is also a concept of MSP, which is the Membership Service Provider, which is the element inside the factory that manages all this RK Bolso from PKI. In terms of consensus, the consensus when we talk about the factory, it goes a little beyond what we are used to, for example, we talk about Bezos or Ethereum, you have that consensus protocol that it will say, ah, this can be recorded or not. When we are talking about the factory, this is much more extensive. When we talk about consensus, we involve practically all the parts, all the chain, let's say, that the information was born until the end. This is much more complete. It includes much more elements than a normal consensus that we are used to talking about. So here it includes all the flow of the transaction, from the proposal and the endorsement to the order that the transaction will be inside the block, validation, registration. So consensus involves practically everything that happens in the life cycle of the transaction in the factory. And it is a complete process of verifying the validity, with the variance of the set of transactions of a block, it is achieved when the order of the transactions of a block meets the explicit verifications of the criteria of politics, that there are several types of politics inside the factory, endorsement policies, chain code policies, it makes the verification of the current version of the reasoned book to know if these policies are updated. So everything has a version. So you made a new policy, a new program. Let's say politics is a program that controls how the governance will work. So you updated this policy, you have a new version. So consensus is also verifying if you are using the correct version of that. It protects against duplicate registration, other threats, identity verification in all directions of the flow of the transaction, it is always checking all the time. The so-called ACLs are the access control lists. The transfer data is repeatedly signed, authenticated verifiers, as a transaction is passed by the different components of the architecture. This is very interesting in the factory, the level of validation, of endorsement, of verifications that it does all the time. It is a process of consensus, it is really extremely complete. And here I brought it for us to see very quickly a diagram that shows how a network would be in the factory. I say very quickly because if I go into detail here, this is already a whole course. But just to kill a little of the curiosity, let's say we have a blockchain network here, oops, and we have here, so you have, for example, your customers' applications, your distributed application that was built, you have here the channel that I said that is the element that centralizes everything. So, for example, even here the pair, which is my network node, this pair can have a smart contract and a reasoned book that is physically recorded with it, you have another pair against reasoned book and let's say these two pairs are on the same channel and the clients' applications access this channel to have access, so these pairs have access here and vice versa. And you also have the order service, which is a very important element of the factory. This guy does a lot of things. So, he, along with this NC, which is the network configuration, he will act directly with the organizations. So, an organization can have several pairs. So, let's understand, for example, an organization as being the company and the pairs are, for example, the department of this company. So, here we will say, the R1, let's say, through this network configuration, we know that the P1 is part of the organization R1 and, for example, I don't know, that the P2 is part of the R4. So, that's what's being shown here. We have here the channel configuration, which is the guy who will say who is part of this channel. In this case, these two organizations, these organizations are part of these two pairs and a lot of policies here in the channel. And we have here the certification authority, which is that part of the PKI, which is what is part of the identity of your network, who generates the keys, who generates the signature protocols, everything else. Tell there, Magnus, do you want to say something that you found there or is everything right? Everything is right, but I will take the opportunity to take a doubt here from Cristiano Braga. You have to see with the channel and the blockchain. So, let's treat the blockchain as a data structure. A channel supports the data structure of how many blockchains? Let's go. Blockchain is a term that we can use in many ways, right? In the case, I'm talking about the data structure. Specifically, that is, the chain. Right. It can manipulate one chain, two different chains, three different chains Ok. When we talk about data, I'm training data storage, so I believe that what he is trying to know is the ledger, which is where, physically, the data will be stored, like the data bank, which is this L here. So, for example, here you see that this ledger is here, it is part of this channel here in the case of the same ledger, because scalability is very large. So, I can be enduring how many ledgers are needed. So, let's say that I have, speaking in a rough way, several data banks, any data bank, being part of this channel. The channel will make a kind of field between the various elements of the network. So, there is this L1, I could have a L2, a L3, a L4, all these guys being endured in the same channel. So, it is not logical to require another channel, but I don't have a limitation of number of storage for the channel, let's say so. And, architecturally speaking, what we are looking for in accordance with the business model is to make a segmentation for the channel. So, let's suppose an organization is to provide resources to the agri-business sector. So, it will have a channel dedicated to the agri-business. This same organization provides resources to the aviation sector. The business model does not have an aviation sector. So, logically, it will provide, it will treat another channel for the aviation sector. Generally, we have these segregations to avoid conflicts because the channel involves consensus, and the consensus of the network. And the participation of the network has to reach a consensus before entering the network. This is important. There are legal issues involved there. Just to remember the tour. OK, Marcelo, do you want to add anything else? I will follow because we have a lot of things. But this is the same scheme. If someone wants to interrupt me with audio, the magnum of the eye interrupts me. That's it. We are here to learn how to talk and follow along. So, let's continue here. So, here is just a recap of what is an identity, of what is the PKI. This has nothing to do with the blockchain. This is much earlier than the blockchain. When you have your ECPF, your CNPJ, your bank via internet, you are already using this infrastructure of PKI that has been created for decades. The blockchain or the factory, in this case, didn't make sense to reinvent the wheel. So, it uses this pattern that is already known by the market, X.509, that people certainly don't know much about this name, but it is what we are used to when you go to a CERASA of life, to a VeriSign, and you say, I want to buy a certificate, my A1, my A2, all of them follow this digital certificate X.509. And here there is an analogy that it is like a credit card. So, this element that I talked about, the MSP, that it is DOFABRIK, it is a guy that will say that my network accepts. So, ok, let's say you are making an analogy here, you are like a customer in the supermarket, you have a Visa, Mastercard, Yellow, etc. All of your cards are valid, all right, but it doesn't mean that the supermarket accepts, it can accept Visa or Mastercard, for example. So, here of these six little cards, so this guy who is the store that is the MSP in FEBRIK will say, look, we accept only these three, that you who will configure, the administrator of the network will configure. So, MSP transforms your verifiable identities, which are all of them, in members of a blockchain network if it is accepted on your network. You who will define this. And explaining a little better than PKI, right? PKI comes from Public Infrastructure, infrastructure of public key. And the main elements are digital certificates, public keys and privates, certificate authority and a list of revoked certificates. So, you have here your certificate authority, you have this element which is called the principal, which is a guy who centralizes some functions, visit the certificate authority, certificate authority, so it will consult if this certificate here is not revoked, then issue the certificate and you have public key and privates from there. Public key is the one that everyone can have, as if it were the number of your account in the bank, and the private key is as if it were your password. You can put it on the network because your security, what guarantees that you are you and no one will appropriate your data and your values you have protected by it. And because I need an MSP this figure just explains a little better than what I told you, than those identities that you have and that are valid and everything else in your fabric network, the governance of your network is determined. And now talking about our book reason, the ledger. The ledger, we talk about what I was answering a question from the colleague just now, that when we talk about ledger we talk about two things, we talk about blockchain itself, here that the terms start to get a little English, you need to pay a lot of attention because the ledger understands the blockchain and when we talk about blockchain it means the data physically recorded in a type of database in the case of a database like key and value and you have here the so-called roadstay which is also part of the ledger which is that data so from the moment that it exists all that process of consensus over this data that has already been updated changed here in the roadstay it will be recorded in the blockchain so these two elements we call ledger, we can say that the global state W is derived from blockchain B I can reconstruct these data here I can restructure the roadstay from the blockchain taking this historical and knowing what is the last value current value and here is an example even for those who studied bitcoin and tirium will find some similarity there is no big news here you have here the blocks B0, B1, B2, B3 the B0 block, which is the initial of the network, is that block called Genesis you have here inside the block you have the part of data and you have the part of metadata so data are the transactions that were recorded in this block and the metadata is about issues of the block so size and all that and you have here a header which is the hash that will connect to the other blocks and make that chain inviolable the order server is a very important element in the fabric so you have a node called the order or the order node that it orders the transactions inside the block and in the last node it really does the recording of this block so it guarantees the finality this guy is the guy who will record the data and he separates what is the order the execution of the chain code and with this he can with this modularization he can perform more scalability the orders keep the list of organizations have permission to create channels they are not all organizations that can create a channel and this list of organizations known as consortium so we have the consortium of organizations that would be companies and these companies that have the pares on the network this is the hierarchy if the order server has several lists you can call it multi tenancy which is another way to execute your blockchain so let's go what always comes up in the head of people fabric is really cool there is a lot of application Bezo too but in frying the eggs when I have to use one when I have to use the other it is a definitive answer Bezo is better for this fabric is better for that we will go through some topics that I divided saying what are the characteristics different from each other that when you have your use case you will evaluate and you will see what is better which framework is better for your architecture is not changing there Magno, are you saying something just enjoying come back to the slides that question was very reflective because the question is architecture system architecture there are certain requirements functional and not functional of the computer system so it is no use to say to an architect I will use Bezo or fabric without knowing what is the purpose for what that system will serve in what ecosystem of computer systems it will be inserted so this is the result of an analysis an architectural analysis you can first go through a corporate analysis then through an architecture analysis more specific so remember this when you are designing your computer systems decide by fabric or by Bezo it is a technical decision that depends on the ecosystem and on the computer system it is worth a try just to remember the architects who are participating in the meeting and who has this presentation about the importance of this decision which is a kind of project decision in the future it can cost a lot of money in terms of cost and maintenance of the computer system follow you have to spend a lot of time on this which is very important I usually say invest invest a lot of money to put it forward for sure so for example when we talk about the network if my application needs if it is made for public network one day it will need to go to public network it is worth thinking about just for private network which is the case that we have Drex today he is made to run in a private network a federated consort there are several names for this but it is also eye on the public network so Bezo, if you have some cases of use in this sense maybe your decision is worth spending more time on Bezo in terms of languages the fever which has a nice flexibility that you use market languages you can do your smart contract in Java or Node.js so you don't need to take a guy and train him in blockchain programming if you put a guy here who already works with these languages ok, so they just need to learn the concept of blockchain already in Bezo's case which is the same language as Ethereum so if you have in your team a developer who doesn't know blockchain you will have to train him in Solidity so this is another argument that you have to take into account how it is made up of my team what is easier if I don't have the time to train a person or someone who already has a Java developer in my team that I can use as a developer in this case for example I have a tip I particularly thought it was very easy to migrate Java to Solidity in terms of how Solidity is assembled in terms of object orientation so programmers are used to with object orientation C++, C-Sharp and Java people and therefore it is easier to migrate to Solidity this is true in terms of consensus Bezo as we saw, he has a good variety of consensus he has some there that the market is already more used like pro-for-for pro-for-for, pro-for-for bft and more variations of these as bft and so on the fabric he already has some more particular ones he basically works with it's not the Byzantine fault tolerance as Magno well remembered that is the bft that comes from the bitcoin he doesn't work with this type of Byzantine fault tolerance he works with this CFT which is the crash fault tolerance and he also works with Kafka it was what was used even in the previous versions and now the fabric is privileging the ref this other type of consensus in terms of market the fabric he has the most time in the market it was the first framework of Hyperled Foundation in production so maybe it would be easier to find people who have the fabric culture than to find someone who knows the bft if you need something that is compatible with Ethereum it's very simple the bft is compatible and the fabric follows another line that is not compatible with Ethereum privacy you have here in the bft it's not it's not native if you run the Bezos without the privacy of transactions if you want you have to plug this component which is called the third one that we talked about a lot already in the fabric you come here with a native privacy already very strong which is those channels and besides that you have this other level of private data and still have that option of cryptography the data you will work with tokens market pattern like R20, RC 721, 1155 and more a great variety of these ERC patterns if you already work with these tokens that are in an exchange then it's cool that the Bezos already works with all this which is the Ethereum model already the fabric it doesn't have these models that are previously implemented so you can even create what the RC 20 does what the RC 721 does but you will have to create all this you will have to program different from the Bezos that you already take it all ready you already have these classes all in the fabric you have nothing native this can be good on the one hand that you create the token the way you want to use something in the market you will have to really write this and another one that is very simple to understand is the question of Drex Drex is made using the Hyperleder Bezos so it is natively compatible and the fabric this other line that doesn't have directly to do with Drex well here we enter the part of it and Magno there are things that you that know how to talk about this do you want to take a little bit here the command there is only the beginning but I will even take this to be able to go back back to those comparative language slides Solidit with Java people have already asked me a Bezo developer right? so my answer at that moment for the colleague was in my opinion it is easier for you to get an ethereum developer or train an ethereum developer that has done tests developed some smart contracts on the ethereum test platform which is free for tests etc already has this depth in the rules let's say used to Solidit logic and enjoy this knowledge and migrate to the Bezo hyperlink maybe this is easier than simply get a Java developer and put him to work directly with the Bezo hyperlink so let's say the bridge maybe there is someone who develops in Java first do some exercises for the Bezo hyperlink this ends up implicating the formative engineering of the professionals who work specifically with blockchain now in terms of operations infrastructure is already different that is to study how the Febre network works, how the Bezo network works, to have the implementations and infrastructure to manage the environment in this part of the certifications we will give you a link there are some certifications available in the market I think they are more known Xintin 1 which is about Xintin Foundation our Linux Foundation recently renewed is the HyperLex Fabric Certified for Kition more new now that Marcelo will talk about in this sequence there are some others I have the IBM Certified Solution Advisor in Blockchain based on version 2 CBDA also based on Blockchain the Certified Profit also has a certification in Blockchain the Certified Blockchain Expert also has a certification in Blockchain there is another one that I really like which is the Blockchain Train Alliance it is a real and informative it takes from the fundamental to a more specialized part and the way they put it it kind of depends on the professional certification you can follow the Blockchain Train Alliance and then go for a more specific ITER certification of the HyperLex here in the Blockchain Train Alliance we have 5 certificates that are finalized and that help the professional to go through their training the certificates vary in price around 200 to 300 dollars but it is important to pay attention to the promotions the certificate entities are always putting promotions in the last Black Friday that was giving a discount of 50% no, 100 dollars if I'm not mistaken the HyperLex Fabric Certified Practitioner the person could buy the voucher for 150 dollars the Blockchain Train Alliance was making a bigger package that you could buy both training and certification for 300 to 250 dollars but it was a promotion so I'm paying attention but all these certifications help the professional and then each individual can go to the next so Marcelo the next part is about the HyperLex Certified Practitioner even to advance the material that you have already created if you participate you can follow ok, so here we go exactly that three months ago this exam was suspended for about a year because they reformulated totally and some people had the opportunity I had the opportunity to participate in the Beta Test of this certification and so it was all it was very cool it was worth doing I thought it was really very fair they used these Beta exams to balance the amount of certifications and so for you to have a better idea of what is the Practitioner exam of the HyperLexer Fabric it is an exam that it is not for those who are not from the area of TI you need to know what is the development of software you need to know what is a blockchain it is not so generic it is not so conceptual you have to be the guy from the area of TI so this is the first thing that is important you have in mind the exam is only online there is no version of it it has the maximum time you can pass on this exam your certification is valid for 36 months and if you buy today your exam you can schedule it for a period of up to 12 months so if I buy today until December 11th, 2024 I can do the test so this is good because it depends on how Magnum said you have a promotion I want to buy but I can't do it I want to buy and then you go on calmly until a year to do and if you don't pass the first time you can do another attempt without cost still you pass you will receive a diploma in pdf you have a digital bed that you can put on your email to show that you are certified for example this exam it as it was all done it is with the last version producing the fabric that is 2.5 we have the 3.0 that is to go to the market at any time but this is the last version that we have the exam is all multiple choice there is nothing that you need to write there is no program that you need to type languages, English, Japanese Chinese I believe that the majority will prefer to make English and there is no in Portuguese it is also important to know that and the level of experience is for what they call the beginner but it is a beginner relative you already need to know that the blockchain needs to be developed but there is no prerequisite for example to write me to do the exam I need to have another certification before you can write and do it any person you know if I'm not mistaken it is costing $ 300 the full value of it is $ 300 it is $ 250 that I remember $ 250 it reached the promotion of 50% you have to always be there attentive who is participating in the chapter Brazil sometimes when the tower launches there is a discount there is a discount so stay there the invitation to be able to participate in our group and know that when you have a voice you take it there buy everything and do the test there is up to a year 365 days to be able to do the test that's it good and the content of the exam is this so like this 16% is the foundation that's what we are talking about then you have 36% of this network structure transfer flow everything else and smart contracts is almost a quarter of the test so the life cycle of the chain code all of this you get in the official documentation of the hyperledger everything else customer applications this here you have everything there do not need to worry about noting this because getting in there on the website of the Fabric certification you have all this everything is copied from there you have everything in this way and how does this exam is done this online exam it is done through a third company and so it's a certification environment quite different you will have to download their own browser that can only be downloaded when you are starting your exam so there are a lot of things that you have to be prepared in machine requirements of your posture during the exam because you will always be you have a link here that you want to do the check of your machine if it has enough memory if you have enough processing storage operating system version so there are a lot of things that you really need to try to do the exam and when you register for the exam that's what I was saying that you have a year I did the register part I registered for the exam so it's all right no, it's not while you don't do the scheduling part that you schedule that will appear that little calendar to mark the day of your exam you still don't have your exam marked so you need to register there are several stages that you need to be very careful to be sure that it's all right 12 months between when you complete the exam until the date of the exam you will have to create a account on the Linux Foundation website if you don't have it but that's also free you can do it at any time the price of the exam currently is 250 dollars you can adjust it one day despite the fact that it's very difficult to adjust promotion and the only way to pay is with an international credit card here is a I reproduced here I gave a copy of the screen which is the checklist for you to register for the exam so you have to go through several things you have to see all this is only enabled 30 minutes before the exam if you mark the exam for two in the afternoon actually your exam starts one and a half in the afternoon because in these 30 minutes you have to do several things if you don't do that you will end up wasting your exam these are some things that really require a certain time so it will identify if your name is right it will check your platform then you will have to download the browser which is obviously a big software imagine how you download a Chrome in your machine you can't do this before you have to do it in this period of these 30 minutes and here is an example of a question screen right so you will have here the questions and always with four alternatives the question and you choose then you have the index button of previous you mark it if it is a question that you are not sure you want to go back to it later you mark it you flag this question and then here in the next class we will see that you will be able to go back and here there is a clock to count the time and here are all the questions that you marked to review you enter this screen I want to see everything that is missing so the cool thing is that you will do one that you were in doubt and go forward then it arrives at the end but it is easier to control the time so I will enter here in the review I have 20 questions to review I have 20 minutes left so cool one minute for the question let's review and then I need to decide what will be this answer that I will definitely leave on the side of there that will be the whole time of an eye on your test that means that you will be sharing your screen so you can't have anything more on your screen it will see you through the camera it will hear you through the microphone and if you have any questions you can call it and there are a lot of requirements that the environment that you will do your test under the table you will have to turn your camera to show what's in the environment for the guy to be sure that there is a pin on the wall so it is a business that is very serious you have to be very careful and prepare for the exam not only in terms of study but also in the environment that you will do your test and here we have two courses my courses it's a merchant that I did for you to prepare so in terms of the BESU there is this course here that I did in Udemy which is about 4 hours there are 50 classes that he talks about the BESU some of the slides that I passed here were removed from the course and he has a very wide chapter that he talks about the DREX why the BESU was chosen for the DREX what is the DREX what are the companies that will enter in terms of infrastructure in terms of resources I was also updating as well as other workshops to say this course is of your own yes so there are people asking since there are courses and then people prepare the course the best ones that are in Udemy built here by our de Guiríssimo Marcelo Creme thank you so there you have the address of the course if you enter Udemy for those who don't know Udemy is the largest online platform of courses in the world we are not talking about TIS courses if you want a course of bonsai of cutting and sewing whatever the course is in all the languages of the world there are literally millions of courses and the part of TIS is very strong and one of the reasons that took me to do this course was that there was no course in Udemy in English in Portuguese because I use Udemy for a long time and anything that you put there is like Google if you put something you will find and I looked for a course in Portuguese at least recently in some version of Bezo there was nothing so I thought it was a nice opportunity to do this course it's all in Portuguese so you enter there in this address anything you want to look for me in the link you can ask me and I want to take advantage of the discount coupon of Black Friday Black of 2023 so you enter this address you type this coupon and you will have a discount when will you expect this coupon it goes until Christmas it's Christmas present until Christmas it's guaranteed it goes until the half December 25th Exactly before you cut the wig if you remember you have to buy the course if you don't you will win right and the other course is this is the preparation for the Fabric certification so this certification that we were talking about so this course was made even if you want to learn about Fabric and you don't have any interest in certification it's worth it it's a totally Portuguese course it's a new course I made it more recent it's a very big content it's 7 hours of class 54 hours and both in the course of Bezo you always have questions here instead of me asking these questions at the end of each module I put everything together and did this kind of simulation so you have 50 questions at the end right on the test for you to answer so it's already a test to see how you are if you are feeling confident to do the test so you have all these 7 hours and you also have the discount coupon just like the other one it's the same code so there are 2 courses that are available for you to do we have a question there is certification for Bezo I don't think so it doesn't exist really the only certification that exists of Hyperledger is this one I believe it will still exist because this one was made 2-3 months ago so it's recent so maybe it will take a while it's not certain if it will exist but I would like to say that it should be in the future for this certification of Bezo I'm also looking at it when we upload it our very dignified José do Taylor I don't know Shermen here from chapter commented that Hyperledger Foundation is preparing a certification of Bezo for 2024 but then I'm going to play with José and ask José but is it January 24th or December 24th? so Magno I heard this today in a meeting with the staff of Hyperledger we were making plans for 2024 and they said that they are preparing but they don't have the date yet so it's 2024 but it's coming but it's already a great sign we know it will exist until now we didn't even know if it would exist we are already working on it for 2024 we didn't know the date well but we are already working on it wonderful so we have a horizon it's good very good to know so let's go let me see if there's anything else here in our content that we even managed to advance well here I believe that José can speak Magno, the question of Brazil Chapter this I invite José to speak but later I wanted if he would pass to me José wants to comment could you take a picture of the screen wait for me send it to your friends perfectly we have a very active community of the so called Brazil Chapter of the Hyperledger Foundation we exchange a lot of information it's a very altruistic community people put the material people put links put your life experiences your professional skills around what they are doing with the Hyperledger platforms we have a lot of material in Portuguese we have a lot of material in Portuguese on the wiki on the hyperledger website we have a channel with the videos this video that we are this meeting that we are making today it goes to our channel on the playlist of the Brazil Chapter of the Hyperledger on the YouTube channel the discord is also very active linkedin very active we have a mailing list that every week has new content we have a channel of whatsapp on the slide here to avoid bots and spam enter this channel whatsapp is very visible but I put it here in the chat of zoom and those who need too much information want to participate in the whatsapp group can contact us for any of these channels talk to us we will pass the link to you and this link is usually updated as I said at the beginning I want to reiterate is a very open community of open mind of open heart so all are very welcome we have people of the most varied origins we have programmers of course developers people of TI but we have many entrepreneurs many economists lawyers people of all areas of knowledge many teachers who are very academic who are studying researching blockchain part of our community we periodically do events at least once a month we have this event here we will have one more week and then we will announce so I invite everyone to do this event to pass the link to you thanks ok, Marcella can you interrupt the sharing? I would like to ask what is the profile let me just interrupt so we can come back Joséria, can you ask me what is the profile of the community of the people who participate in the community I would say what is this? but this boy I am trying to get closer to get he has the size practically my cell phone I am playing here with you but this is one of those 8-inch that I kept as an estimation very cool it is the oldest socket it is a very different socket very motivated that changes a lot of information and is always willing to receive the community and the professional colleagues who are entering the world of blockchain especially in the HyperLagic community I can't wait to welcome you all taking the opportunity here Cramer thank you very much for sharing this content this is a fundamental preparation for our next event Cramer leave a few words because I will call a person to have a special participation to give an overview of our next event great thank you very much for the participation everyone I saw that you participated with questions to share knowledge very cool to see that you had a good audience or active people asking I am at your disposal my name is there you put Marcelo Cramer on LinkedIn only I have it ask me to add tell me that you participated here in this event and then any doubt we will talk maybe it has not been similar to the central bank when the central bank explained the platform to us but I would like to take advantage I do not know if Marco Sarves is there if you could share and talk a little on December 14 will have a presentation a lesson of Samuel Dagoledger Samuel is the uncle Dagoledger about the BESO HyperLagic here our purpose was to introduce the BESO HyperLagic and the Fabric HyperLagic in a comparison and serve to advance precisely for this next presentation which is a continuity that Samuel will do Marco is with you there I think Josélio or you who is sharing follow Marco what do you have and how it will be take a little doubt about this event on December 23 but first of all I would like to thank the content Magno and Kramer and Marcelo just for a curiosity while you were talking I was preparing our diplomas they are being made only two are missing you see that it works make a diploma there on our platform guys now on the 14th Samuel this uncle Dagoledger will do a presentation he will do a workshop with technical details and some live presentations of the functioning of the BESO HyperLagic with some elements docked that he will use to show a little what Kramer said here a little of the details and Magno too will show some functionalities exactly in a workshop after that we should have a session of questions and answers for those who have doubts regarding this model for those who do not know last week Samuel was in Tokyo exactly on the HyperLagic Global Forum he did not talk to him and basically we put him to play the projects that are pending but probably he must have some news I'm really curious to know what he brought from Japan I'll wait for you on the 14th with Samuel Marcos, question on the 14th, 6.30 what is the expectation of duration an hour, an hour and a half, two hours I think it's three hours I think it's the expectation of three hours of a workshop there must be some technical actions some little details some exercises if I'm not mistaken he created a GIT for that which is the GIT we use to train our own team I think he gave a format for a more didactic model and must present this GIT of use for the creation of HyperLagic BESOM I don't know if he will use the Thruffle or the Hard Hatch I'm really curious to know how this workshop will be and two additional questions how do you write how do you make people enter watch, see, etc and if it gets recorded somewhere if you will keep it for postage etc the business caught me probably as I'm not part of the organization I call now José Luteire to know if you have a Meetup for the description I'm going to give the exposure I received a Meetup look at this we are on the Meetup platform which is the official platform of the HyperLagic Foundation events that we use in the HyperLagic chapter in Brazil they meet the announcement of this event but I have a request from David Boswell from the HyperLagic Foundation that people make their registration for the Zoom link so I put it in the chat here Zoom I put it in the chat of this recorded video on YouTube I'm going to share it on social media so that people will be identified by Zoom so it's important the people who made the registration on the Meetup will enter we already have 70 registered but only 15 made the registration on Zoom and it is necessary to make the registration of Zoom and this helps so this event will be recorded on the YouTube channel and it will be live the important the interesting part of the event is to make it live because as you make it and there will be doubts that you will implement in your own infrastructure you will learn and talk with Samuel who will make it live so the person has to have a Zoom user and password on the Zoom platform to be able to enter properly in the room so if on the day of the event the person click on the Zoom link the Zoom will request the user and password if the person does not have the user and password it will have to create a register so that's it that the HyperX staff will be able to reflect on the platform actually you do not need to have a Zoom user you make a register on the Zoom platform you put your name I'm with Ileberto here name, surname, email and what your organization and they already make your register you will be identified so you do not need to have a Zoom user it's just a register on the Zoom form it's very simple Marco thank you for sending us the information Reitero Opportunity Import this one Samuel will bring to us Samuel who has participated in several forums both national and international I put the link of the Meetup here in the chat if the person enters the Meetup there, just look HyperLegia Rio de Janeiro HyperLegia São Paulo HyperLegia Recife HyperLegia, I think it has Belo Horizonte also there are several groups there that are maintained on the Meetup platform by HyperLegia Fundrizio audience, thank you immensely today we had an excellent audience of the highest level as always which is our community and the word goes to our closing José once again, thank you for the opportunity of us to make the HyperLegia Brasil Talks look Magno I am very honored to have this opportunity to be here with you you saw as we commented at the beginning Magno and Marcel worked a lot to organize this content to share the slides I had a question if you can share the slides later if possible, we put it on the Wiki we have a page on the Wiki of this event and you can look for the Brazil chapter on the wiki of HyperLegia and you will find it here in the links that I posted you enter there, you will find the link of the event, there is the description Magno has always been good in communication he is getting better and better Congratulations Magno, you are very articulate and very friendly so thank you very much, Magno, thank you and you saw there Marcel with this development that he has with this ease with this didactic I am his student in two courses Tandoro de Bezo, Canto, Nudo e Febrega I bought the promotion now I'm going to do the course to do the test some colleagues made the trial test including Marcel I wanted to highlight that Marcel is certified Marcel Marco Sarri Samuel and several others have the certification already has the new certification other colleagues are preparing so it's amazing as Magno said, the level of this group is a very dedicated group with a high technical level and it is a group that likes to help, so those who are starting I know some people others came into contact people are like, but I'm starting I have a notion, I've heard talk, I'm very interested come, come what people collaborate participate you saw Magno, you saw Marcel other colleagues talking here in the chat or here on the on the Zoom platform the people really help, it's not rhetoric, it's true of hearts, people participate I have to thank you very much Marcel, thank you for all your dedication, you, Magno and everyone who was here with you it was very rich this debate, thank you very much thank you and good night I would like to wish a great Christmas for everyone a happy new year a happy 2024 for everyone with great success a lot of peace and a lot of health and a lot of joy everyone here has a happy 2021 2024 Happy Christmas everyone, happy Christmas all the best to you good night, thank you Marcel, Magno, good night bye