Desenvolvendo em Arbitrum

Introduction and Event Announcements

Opening Remarks

• The speaker welcomes everyone, expressing hope that they are well and excited about the upcoming lesson on development in Arbitrum.

• Important dates are shared: a hackathon from November 6 to 7 and a major conference on November 8 and 9, encouraging participation.

Transition to Guest Speaker

• João is introduced as the guest speaker for the session, with appreciation expressed for his presence.

• João encourages attendees to engage actively during the presentation, emphasizing the goal of providing accessible education.

João's Introduction and Background

Personal Introduction

• João begins by stating he will not be able to see participants due to full-screen mode but invites questions via chat.

• He introduces himself as part of the Arbitrum Foundation since 2019/2020, highlighting his non-technical background aimed at sparking curiosity among attendees.

Overview of Blockchain Ecosystem

• João discusses the growth of the blockchain ecosystem, noting reports indicating a new phase in blockchain markets beyond just cryptocurrency.

• He emphasizes that discussions should focus on blockchain as a broader concept rather than solely on crypto markets.

Growth of Layer 2 Solutions

Emergence of Layer 2 Networks

• The rise of Layer 2 (L2) networks is highlighted, with over 100 L2 solutions currently available in Ethereum’s ecosystem.

• João notes that L2 solutions will not compete directly with Ethereum but will enhance its capabilities through interoperability and security.

Challenges in Layer 2 Development

• He points out potential saturation in L2 networks where many lack utility or clear direction, stressing innovation as key for success.

Arbitrum's Origin Story

Founding History

• João shares an interesting backstory about Arbitrum's inception at Princeton University in 2015 by graduate students working on blockchain thesis projects.

• This collaboration led to what is now known as Arbitrum, marking it as a significant milestone within the blockchain community.

Overview of Arbitrum's Evolution and Ecosystem

Historical Context and Founders

• The discussion begins with a reflection on the significant changes from 2015 to 2025, highlighting the foundational role of co-founders in shaping the ecosystem.

• Arbitrum was conceived as a solution to scale the Ethereum ecosystem, emerging around late 2021 or early 2022.

Growth and Technological Advancements

• Since its inception, Arbitrum has evolved beyond just a Layer 2 (L2) network; it aims to be an infrastructure layer for new financial systems.

• The platform boasts rapid transaction speeds and low costs, with over $20 billion in assets on the network, including nearly $9 billion in stablecoins.

DeFi Integration and Liquidity

• Arbitrum's liquidity is crucial for decentralized finance (DeFi) projects that often struggle with access to necessary funds throughout their lifecycle.

• The ecosystem supports a variety of applications and emphasizes decentralization through innovative proof systems like Bold.

Flexibility and Development Tools

• Arbitrum One serves as its primary L2 network while offering flexible tools for developers to address specific needs within their projects.

• The emphasis on flexibility allows teams to utilize Arbitrum’s toolkit effectively, catering to diverse project requirements.

Technical Features of Arbitrum

Cost Efficiency Solutions

• Arbitrum provides low-cost transaction solutions through its optimistic rollup technology, which utilizes fraud proofs instead of zk-rollups.

Ethereum Compatibility

• It operates under Ethereum’s security model without competing against it, aiming for mutual growth within the ecosystem.

Advanced Technical Support

• Full EVM support ensures compatibility with existing tools while also introducing WebAssembly capabilities via an ultra VM that runs alongside EVM.

Developer Experience

• There are mixed opinions about developer friendliness regarding Solidity; however, WebAssembly presents exciting opportunities for attracting new developers.

Arbitrum Ecosystem Overview

Introduction to Arbitrum Products

• The primary product of Arbitrum is Arbitrum One, a second-layer network designed to enhance scalability and efficiency.

• Arbitrum One boasts over $20 billion in Total Value Locked (TVL) and more than $9 billion in stablecoins, indicating significant liquidity and interest from projects.

• Strategies are in place to continually grow the ecosystem, involving various stakeholders including DAOs and aligned entities within the blockchain space.

DeFi Protocols on Arbitrum

• A wide array of DeFi protocols is available on Arbitrum, with notable platforms like Uniswap, Sushiswap, OpenSea, and DMX contributing to its growth.

• As of the last report, there were nearly 900 DeFi projects operating within the Arbitrum ecosystem, showcasing its robust development environment.

Partnership with Robinhood

• Robinhood is highlighted as a major partner; it has over 26 million users in the U.S. and is expanding into blockchain technology.

• The platform has launched over 500 tokenized stocks for European clients using Arbitrum's blockchain infrastructure.

• This partnership allows users to purchase tokenized shares easily through a user-friendly interface while leveraging blockchain capabilities.

Future Developments with Robinhood

• Robinhood plans to develop its own second-layer network utilizing Arbitrum’s technology as demand grows for their services.

• The collaboration aims at enhancing market testing for both parties involved while providing scalable solutions for future needs.

Arbitrum Nova: A New Approach

Introduction to Arbitrum Nova

• Another key product is Arbitrum Nova, which focuses on gaming applications and offers unique features compared to Arbitrum One.

AnyTrust Technology

• At the core of Nova's offering is AnyTrust technology that enhances data availability through a committee-based model involving reputable partners like Google Cloud and ConsenSys.

Benefits of AnyTrust

• By utilizing established players for data storage, costs associated with running games or high-frequency trading on blockchains can be significantly reduced.

Arbitrum and Its Ecosystem

Overview of Arbitrum's Cost Efficiency

• Arbitrum offers a more affordable solution for transactions, potentially reducing gas fees to zero for users. This is particularly beneficial for projects utilizing this technology.

• The RB9 focuses on gaming, social interactions, and NFTs, which require numerous transactions that are less costly due to efficient data storage alternatives.

Gaming Ecosystem in Arbitrum

• The ecosystem includes various games like "The Beacon" and "Mike Heroes," appealing to gamers as a means of onboarding new users into the blockchain space.

• The gaming market is projected to grow significantly, with estimates suggesting it could reach $30 billion by 2030, indicating strong interest from developers in this area.

Development Support and Language Flexibility

• Arbitrum supports EVM (Ethereum Virtual Machine) but aims to broaden accessibility by allowing other programming languages beyond Solidity for blockchain development. This opens opportunities for more developers.

• A new virtual machine within Arbitrum enables higher performance contracts using WebAssembly (WASM), enhancing memory and computation efficiency while maintaining compatibility with existing Solidity contracts.

Multilingual Development Environment

• Developers can create projects using both WASM-compatible languages (like Rust and CC+) alongside Solidity, promoting a diverse development environment that enhances security through features like reentrancy detection.

• The introduction of support for multiple programming languages allows access to a broader developer base, addressing the limitations posed by relying solely on Solidity. Projects can now also utilize Move language among others.

Technical Innovations in Smart Contract Development

• The multi-Virtual Machine architecture allows simultaneous operation of EVM and WASM environments, facilitating smart contract development across different programming languages while optimizing gas usage during project creation.

• Visual aids illustrate the transition from traditional EVM bytecode systems to the innovative multi-Virtual Machine setup in Arbitrum, showcasing its capabilities in supporting various programming languages effectively.

Ecossistema da Arbitrum e o Stylus

Introdução ao Stylus

• O Stylus abre oportunidades para desenvolvedores utilizarem não apenas Solidity, mas também outras linguagens de programação.

• Casos de uso do Stylus incluem integração com hooks da Uniswap e redes dentro da Arbitrum, que estão utilizando essa tecnologia.

Aplicações Práticas do Stylus

• Projetos como dark pools estão sendo criados com base no Stylus, focando em privacidade.

• A importância de explorar mais sobre o Stylus é destacada, com referências a um blog da AF para informações adicionais.

Arbitrum Orbit: A Caixa de Ferramentas

Estrutura e Funcionalidade

• O Arbitrum Orbit é descrito como uma caixa de ferramentas que permite a personalização na construção de projetos.

• A infraestrutura foi testada com mais de 49 projetos, demonstrando sua confiabilidade.

Personalização e Flexibilidade

• Os projetos têm liberdade para escolher diferentes disponibilidades de dados e funções de interoperabilidade.

• O ecossistema já conta com mais de 49 blockchains ativas em mainnet, abrangendo diversas áreas como NFTs e jogos.

Liberdade Criativa para Projetos

Controle Total sobre o Roadmap

• Os projetos podem personalizar aspectos como token de gás, lógica do sequenciador e velocidade dos blocos.

• A Arbitrum fornece as ferramentas necessárias enquanto os projetos mantêm controle total sobre seu desenvolvimento.

Integrações e Exemplos Práticos

• Integrações com provedores como Gelato e Paldeira aumentam a personalização na prática.

• Um mapa do ecossistema Orbit ilustra as redes que operam sob a infraestrutura da Arbitrum.

Verticals in DeFi and Opportunities for Builders

Overview of DeFi Verticals

• The discussion highlights various networks within the DeFi ecosystem, such as Plume, which focuses on Real World Assets (RWA) and has successfully launched a project called Maete.

• There is notable growth in different verticals within the RWA ecosystem, with a strong emphasis on DeFi as a primary focus since inception.

• The speaker mentions their pioneering role in integrating DeFi into the Arbitrum network, emphasizing long-term vision and mission clarity.

Community Engagement and Builder Support

• The speaker invites questions from the audience while indicating that there are more insights to share about opportunities for builders.

• Several grant programs are available for builders, including Arbifuel, aimed at financing projects focused on payments and user experience improvements.

Grant Programs and Funding Opportunities

• Arbifuel grants cover gas costs for developers working on high-throughput applications without incurring excessive transaction fees.

• Offchain Labs has introduced an incubator program to support technical development and marketing strategies for new projects.

Specific Grant Initiatives

• The Arbitron Domain Allocator program offers over $6 million across five categories: community events/education, gaming, developer tools, new projects, and a new category for creating custom orbit chains.

• A second round of grants focused on artificial intelligence is also underway to encourage experimentation with supported technology stacks.

Development Flexibility

• Developers are encouraged to explore programming languages beyond Solidity (like Rust or C++) to enhance their projects' capabilities.

• Emphasis is placed on leveraging diverse programming skills rather than being limited to one language.

Stylus and Its Impact on Blockchain Development

The Role of Stylus in Development

• Stylus is seen as a valuable tool for developers, enhancing ease of development and onboarding new team members.

• It serves as a compiler that facilitates the conversion of Rust to Solidity, enabling its use across various blockchain chains.

Customization in Blockchain Ecosystems

• The blockchain ecosystem has diverse demands and verticals such as DeFi, tokenization, stable coins, and gaming.

• Stylus offers a level of customization that many existing stacks do not provide, allowing projects to tailor solutions to their specific needs.

Security and Decentralization Focus

• Emphasis on security and decentralization is paramount; alignment with the Eternum ecosystem is highlighted.

• Arbitrum One aims to support innovative solutions within the second-layer network with significant total value locked (TVL).

Personalization Options for Projects

• Projects can customize data availability layers or governance tokens according to their preferences without imposed restrictions.

Community Engagement Initiatives

• Invitation extended for participation in Arbitrum's global ambassador program aimed at community growth across multiple countries including Brazil.

• Announcement of Arbitrum's new Portuguese Twitter account aimed at increasing accessibility and engagement within the Brazilian community.

Future Content Accessibility Efforts

• A commitment to providing more content in Portuguese is expressed, addressing past challenges with English-dominant information dissemination.

Closing Remarks and Resources

• Links to important resources such as documentation and SDK will be shared post-presentation for further exploration by attendees.

Arbitrum Grants Overview

Introduction to Arbitrum Foundation and DAO

• The speaker introduces their role at the Arbitrum Foundation, which is responsible for the growth of the Arbitrum ecosystem through various grant programs.

• Emphasizes that control over the Arbitrum protocol lies with a decentralized autonomous organization (DAO), rather than a single individual or team.

Grant Programs and Funding

• Highlights the existence of multiple grant programs within the DAO, including one focused on gaming, referred to as "Arbitrum Domain Locator."

• The third round of grants has a total funding pool of $6.75 million available for projects across five verticals: new protocols, education, community growth, gaming, developer tools, and stylus-related initiatives.

Transparency and Application Process

• Stresses the importance of transparency in fund distribution and encourages potential applicants to review past rounds and current opportunities.

• Mentions that there are over 240 proposals submitted in this vertical alone, indicating high demand for funding.

Evaluation Process

• Describes a thorough evaluation process where designated guardians assess project proposals before distributing funds.

• Encourages engagement with domain allocators who oversee these evaluations; they can provide feedback even if individuals do not wish to submit proposals.

Community Engagement and Events

• Provides an overview of community initiatives such as ambassador programs aimed at fostering growth in Brazil.

• Invites attendees to engage with representatives at upcoming events like Iflatan on September 9th, highlighting opportunities for networking and collaboration.

Overview of the Third Round Application

Key Details about the Program

• The third round of applications for the program started in March and will continue until February of the following year, providing a clear timeline for interested participants.

• It is emphasized that if projects are successful, there may be a renewal of this application round, encouraging potential applicants to take action before the deadline.

Opportunities and Resources

• Participants are encouraged to explore various opportunities within the ecosystem, including Arby Fuel, Trail Blazer, and Onchain Labs. A PDF with useful links will be shared for further exploration.

• There is an active Twitter profile for Arbitrum in Brazil where individuals can reach out with questions or seek additional information regarding their projects.

Upcoming Events and Networking Opportunities

Major Events in Latin America

• Several significant events are scheduled in São Paulo next month, including Eteromédico, IFlatan, and Dev Connect. These events present valuable networking opportunities within the Latin American ecosystem.

Community Engagement

• The importance of community engagement is highlighted through initiatives like Racaton, which focuses on building solutions. This event serves as a platform for networking and strengthening connections within the Arbitrum community.

Closing Remarks and Future Engagement

Gratitude and Encouragement

• Appreciation is expressed towards João for his participation. His involvement is seen as an opportunity for collective learning among attendees.

Final Notes on Upcoming Dates

• Attendees are reminded that Racaton will occur on June 6th and 7th, followed by a major conference on June 8th and 9th. Participants are encouraged to prepare for these dates to maximize their learning experience.