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ETHCC 4 — JULY 20-22, 2021HOMEAGENDASPEAKERSINFOETHVCBUY TICKETS EthVC. Buy Tickets. Ethereum Community Conference 4. July 20-22, 2021 Maison de la Mutualité, Paris, France 🇫🇷. 08 weeks 02 days 04 hr 06 min 10 sec. Buy Ticket in € 🚀Buy Ticket in Crypto🚀. About EthCC. The Ethereum Community Conference (EthCC) is the largest annual European Ethereum event focused on technology and community.

ETHVC

EthVC —. WHY a VC track during EthCC ? We aim to bridge the gap between VCs wishing to better understand the technology and discover groundbreaking projects, and blockchain projects/companies searching for funding, but with little VC network and access. The “EthVC Track” is a unique opportunity for VCs and carefully selected

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About Us. Ethereum France (formerly ASSETH), is a French non-profit organization mainstreaming blockchain and Ethereum in all French-speaking countries so that everyone can assume ownership of

ETHCC 3 — MARCH 3

Ethereum Community Conferences & Workshops: 2-3-4 March 2021 in Paris. About Us. Ethereum France (formerly ASSETH), is a French non-profit organization mainstreaming blockchain and Ethereum in all French-speaking countries so that everyone can assume ownership of

this technology.

ETHCC SPEAKERS

Ethereum Community Conferences & Workshops: 20-21-22 July2021 in Paris. About Us. Ethereum France (formerly ASSETH), is a French non-profit organization mainstreaming blockchain and Ethereum in all French-speaking countries so that everyone can assume ownership of

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ETHCC

Organizers. EthCC is organized by Asseth which is a French non-profit organization that has been promoting and sharing knowledge on Ethereum and its ecosystem since early 2016. EthCC has the support of the Ethereum Foundation and the CNAM. ETHCC 3 — JULY 20-22, 2020< Ethereum Community Conferences & Workshops: 20-21-22 Julyin Paris. oneworld ® is pleased to be the official airline alliance of EthCC 3.. As a registered attendee, you can access discounted flights for travel to this event Take advantage today: Book your flight and enter event code OW41B19 to access our online booking tool. Attendee

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DAY 1 GENERAL EVM PRIVACY DATA SECURITY MARCH 8TH 12:20 Fredrik Harrysson - Running Rust contracts on Kovan with WASM Sandra Ro - Blockchain for good LUNCH LUNCH LUNCH 12:20 12:25 LUNCH LUNCH LUNCH 12:25 12:30 LUNCH LUNCH LUNCH LUNCH 12:30 12:35 LUNCH LUNCH LUNCH 12:35 12:40 LUNCH LUNCH LUNCH 12:40 12:45 LUNCH LUNCH LUNCH 12:45 12:50 LUNCH LUNCH LUNCH 12:50 12:55 LUNCH LUNCH LUNCH

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ETHCC 4 — JULY 20-22, 2021 EthVC. Buy Tickets. Ethereum Community Conference 4. July 20-22, 2021 Maison de la Mutualité, Paris, France 🇫🇷. 08 weeks 02 days 04 hr 06 min 10 sec. Buy Ticket in € 🚀Buy Ticket in Crypto🚀. About EthCC. The Ethereum Community Conference (EthCC) is the largest annual European Ethereum event focused on technology and community.

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About Us. Ethereum France (formerly ASSETH), is a French non-profit organization mainstreaming blockchain and Ethereum in all French-speaking countries so that everyone can assume ownership of ETHCC 3 — JULY 20-22, 2020< Ethereum Community Conferences & Workshops: 20-21-22 Julyin Paris. oneworld ® is pleased to be the official airline alliance of EthCC 3.. As a registered attendee, you can access discounted flights for travel to this event Take advantage today: Book your flight and enter event code OW41B19 to access our online booking tool. Attendee

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March 3 - 5, 2020

ETHEREUM COMMUNITY CONFERENCE 3 Maison de la Mutualité, Paris, France 🇫🇷 00 weeks 00 days 00 hr 00 min 00 sec

ABOUT ETHCC

The Ethereum Community Conference (EthCC) is the largest annual European Ethereum event focused on technology and community. Three intense days of conferences, networking and learning. ALL TALKS AND WORKSHOPS ARE ORGANISED IN OUR 15 TRACKS :

Blockchain for Good

__

USING NFT'S AND RADICAL ECONOMICS TO SAVE ANIMALS - TALK

Clark Jonjon

__

Currently, contributing towards a cause that is close to your heart, like endangered animal conservation, is detached and unrewarding. Donations are simply once off and forgettable. This talk will explore how we can create a meaningful social impact economy using ethereum and some radical economics. In 2018, Wyl and Posner released a book called radical markets, that discussed interesting ideas such as having assets that are Always For Sale (AFS). This can be applied in a very interesting manner to a non-fungible token market, where the proceeds of generated from this AFS mechanic can create a meaningful social impact economy. As a POC, https://wildcards.world __ was developed which is currently generating hundreds of dollars a month to protect endangered animals. IS THE US DOLLAR OR VOLATILE CRYPTO REALLY THE BEST STORE OF VALUE FOR INTERNATIONAL SOCIAL ENTERPRISE PROJECTS? - TALK

Dave Appleton

__

HelloGold have been working since 2016 to help those underserved by the banking system to protect their wealth by enabling micro investments in vaulted gold. We would like to propose using tokenised gold (GOLDX) as a store / transfer of value medium to isolate projects from currency volatility. WEB3.0: TRANSFORMING THE HUMAN WEB FROM 0 TO A 1 SUM GAME - TALK

Nikola Madjarevic

__

We'll discuss how the old (current) web has developed on top of a master-slave architecture, giving rise to centralised powers enslaving our information, value and rights, and how the web3.0 revolution stands to evolve a new human network for the people, BY the people. We'll discuss the Why and "What for" of the Blockchain and Decentralisation revolution, and then review How these 2 forces can help emerge a new era for mankind. TRUSTLESS TRANSLATION FREELANCING - TALK

Ferit Tunçer

__

Translation is a special subtype of freelancing where the customer receives a service of which they can't verify it's quality. Since the customer lacks knowledge of the language, how can he verify that the translation was done properly? Up to now, the hard-to-verify nature of translation work was solved by working with trusted translators only. If he knows a good translator, the customer can use his services. If he doesn't, he will have to resort to authorities that will provide a certified translator (albeit expensive). But again, the customer will still have to trust certifying authorities (a government or a company) and assume the certified translator will do an excellent job to protect their reputation. Is there a better and trustless way to handle translations? LEVERAGING AFRICAN POPULATION TO GROWING ETHEREUM DEVELOPER ECOSYSTEM

- TALK

Ayodeji Awosika

__

The talk will be sharing the review of the on-going 500 Nigeria Developer for Ethereum program and be explaining how efforts can be put in place to use the population and intellect of Africans to increase the number of Developers in the Ethereum Ecosystem IBISA ENABLING THE NEW GENERATION OF INSURANCE FOR AGRICULTURE HARNESSING EARTH OBSERVATION DATA AND BLOCKCHAIN - WORKSHOP Jean-Baptiste Pleynet

__

How blockchain can enable services that before was not possible and have a real impact in peoples lives BREAKING DOWN DATA SILO'S WITH SELF-SOVEREIGN IDENTITY - TALK

Marnix Van Den Bent

__

Give users full control over their data! After this talk you know where to start if you want to build an identity app and how to make identity protocols interoperable by using the open-source Universal Ledger Agent components. You'll get an update on our SSI activities

and pilots.

GENERALIZED TOKEN CURATED REGISTRIES: FIGHTING CORRUPTION, FAKE NEWS

AND BEYOND. - TALK

Matheus Alencar

__

Token curated registries can empower communities to organize their information in a fair and neutral way. We start by presenting how token curated registries are being used for self regulation and fraud detection in exchanges and how this logic can be extended to fight corruption, fake news and censorship. Finally, we introduce the Generalized TCR, a tool that anyone can use to cheaply build and deploy new token registries in their community. IMPACT DELIVERY AGREEMENTS: A NEW PROTOCOL FOR INVESTABLE BOUNTIES -

TALK

Raphaël Mazet

__

Impact Delivery Agreements (IDAs) are a new primitive that turn the delivery of impact into transparent financial instruments. Think of them as bounty contracts with investable future cash flows. IDAs are at the core of version 2 of the Alice "social DeFi" protocol which is currently on testnet. IDAs work by allowing anyone to make promises about impact they aim to achieve, and to sell the future payments related to the fulfilment of those promises to investors. They are integrated with Gnosis (Alice is an ECO fund grantee) for the creation of prediction markets, and Kleros for arbitration. ELECTRASEED FUND - DECENTRALIZED FINANCE TO ACCELERATE ACCESS TO CLEAN ENERGY IN GLOBAL SOUTH & NORTH - TALK

Sebnem Rusitschka

__

Tokenization is the process of connecting disparate sources of value through their digital representation (data) in a value network that can scale globally. The enabling technologies are digital signatures, programmable contracts, and distributed public ledgers. When the value of access to clean electricity is tokenized, one (anyone) can create and use new incentive mechanisms for the appropriate allocation of resources that is not solely informed by profit maximization. Electraseed Fund is a demonstration of this potential: Decentralized funding of solar smart microgrids in the Global South & North, enabling global participation and balancing of financial goals with positive social, environmental, and economic impact of the actions of

all stakeholders.

BLOCKCHAIN PROTOCOLS FOR REPATRIATION OF STOLEN ASSETS - TALK

Shimon Newman

__

My father (https://www.ft.com/c…6-9d4d-c11776a5124d __

) and

I are developing a blockchain protocol to facilitate the monitoring, security, and verified impact of repatriated assets. The talk would be on the opportunities and challenges around this domain. It would cover the journey of my father and me to get to this stage, including speaking at the French Senate last year, how I was inspired by last year's EthCC, and our partnerships with blockchain protocols like Disberse, ixo, and with organizations like the Africa Network for Environmental and Economic Justice. It would also outline our vision, as well as some of the other opportunities out there in terms of blockchain for good. DECENTRALIZED INSURANCE - REACHING ADOPTION BY THOUSANDS OF SMALLHOLDER FARMERS IN SRI LANKA - TALK Christoph Mussenbrock

__

Crypto Economics

__

FUNDING ECOSYSTEM PUBLIC GOODS - TALK

Vitalik Buterin

__

Public goods of different forms, including research, client development, documentation, outreach, wallets, user experience and more are the lifeblood of blockchain ecosystems. And yet, with the sole exception of network security, there has yet been little attention to how to direct funds to them - both where funds come from, and how to decide who gets paid. I review existing approaches, inside and outside ethereum, including quadratic funding in Gitcoin Grants as well as other mechanisms, and compare the benefits and drawbacks of

each one.

BUY THE DIP - TALK

Rick Dudley

__

A discussion on the current state of The Ethereum Community and the challenges it faces from without and within. VC FUNDING FOR BLOCKCHAIN STARTUPS - WORKSHOP

Ambre Soubiran

__

I'm happy to help guide fundraising startups through the stormy sea of VC fundraising, review their decks, hear their pitch and provide 1 to

1 feedback.

ETH MARKET DEPTH AND STRUCTURE - TALK

Ambre Soubiran

__

Taking a look at the current state of the largest liquid ETH markets, analysing exchange prices, volumes and order book structures over time and see how markets are becoming more efficient and liquid INCUBED - A CRYPTO-ECONOMIC MINIMAL VERIFICATION CLIENT - TALK

Christoph Jentzsch

__

The concept, as well as the functionalities of the Incubed client,

will be presented.

Incubed is an ultra-light client with quantifiable economic security. The smallest version only needs around 250kb of storage. The full Incubed client (including EVM implementation) needs about 450kb. The typescript version, as well as the c and wasm version of the client, will be shown. Furthermore, the command line functionality of Incubed will be presented. An outlook of future developments, especially how to access the Bitcoin network, with secured access through the Ethereum network will

be shown.

INCENTIVIZING FUNDING FOR PUBLIC GOODS - TALK

Griff Green

__

We are building "Commons" - basically Token Bonding Curves attached to DAOs that can be used to support sustainable funding for a public good... We are starting with advancing token engineering research :-D we use a lot of Token Engineering to make all this work TOKEN MAXIMALISM - TALK

Lasse Clausen

__

A comprehensive thesis of why public good networks are best structured open source with economic incentives instead of for profit

corporations.

ALGORITHMIC STABLECOINS - TALK

Markus Franke

__

Algorithmic, or more specific seigniorage-style stablecoins algorithmically expand or contract the supply of the stable token in order to match demand. These systems typically introduce one or more non-stable, or seigniorage, assets that may fluctuate in value in response to changes in demand for the stablecoin. These types of systems are arguably the most decentralized, as they don’t rely on any other crypto or fiat currency in order to maintain their stability. However they can be complex to build and analyze, and may be particularly vulnerable to a decline in market confidence around the seigniorage token or the cryptocurrency space as a whole. OPENVINO: TOKENIZATION, TRANSPARENCY, AND TRACEABILITY - AN OPEN-SOURCE WINERY IN ARGENTINA - TALK

Mike Barrow

__

Open-source winery - sensors that write directly to blockchain - wine-backed crypto assets - linking wines to the blockchain using non-invasive spectroscopy - viniswap.costaflores.com, forking unisocks and the uniswap bonding curve for wine tokens COMBINATORICS AND CRYPTOECONOMICS - TALK

Oliver Beige

__

Combinatorial optimization is a common tool in operations research, but it is all but unknown in economics. To define the new field of cryptoeconomics, it is important to understand how combinatorics shapes human interaction, how eliminating combinatorics has limited the scope of traditional economics, and how cryptoeconomics can fill

this gap.

CRYPTO POWERED SOCIOECONOMIC SYSTEMS - TALK

Petar Jursic

__

Building a social infrastructure for the builders ecosystem, then expanding it as a socioeconomic system layer above the nation states. MetaCartel > Ethereum > wider crypto > general freelancer > anyone. Real life RPG, something like that. https://twitter.com/…1199447733901418496 __ DEMYSTIFYING STABLECOINS: CRYPTOGRAPHY MEETS MONETARY POLICY - TALK Seyedehmahsa Moosavi

__

In this talk, I will represent our most recent research on Stablecoins (SoK: demystifying stablecoins). So far, the majority of the research works on this topic focus on enumerating the intricate details of how a particular ‘brand’ of stablecoins works today—details that could change tomorrow. I will provide a thorough understanding of stablecoins and fundamental stability mechanisms. As opposed to the other research works on this topic, we are very selective in the concepts from finance we bring into the survey and explain each from first principles, while attempting to minimize or eliminate jargon. I will also present the taxonomy we use to classify stablecoins in the way it hasn’t been

done before.

ENABLING OPPORTUNITY AND CHOICE WHERE THERE ARE NONE - TALK

Simona Pop

__

Exploring the impact of blockchain based models in empowering individuals and communities to access resources (information,

education, work).

POTENTIAL LEGAL IMPLICATIONS OF PROOF-OF -STAKE BASED NETWORKS - TALK

Sonja Prstec

__

The increasing use and implementation of PoS in various distributed ledger networks has added an additional layer of complexity to the legal and regulatory issues involved in the regulation of distributed ledger networks and cryptocurrencies including complex legal issues relating to regulatory status and treatment under existing laws, compliance (including valuation, custody and reporting), application of security laws, taxation, and anti-money laundering. SCHELLING GAMES AND THE THEORY OF VOTING SYSTEMS - TALK

William George

__

In traditional social choice theory one finds that there are difficulties in designing election systems with desirable properties to decide between more than two candidates, see for example Arrow’s Impossibility Theorem. Meanwhile Schelling point based voting is being used in blockchain applications such as the Kleros dispute resolution system and a number of oracles. Here participants are incentivized to be coherent, rather than to vote their personal preferences as in traditional elections. In this talk we will briefly outline some ways in which the tactical voting considerations of traditional elections can nonetheless manifest themselves in Schelling point based systems. INTRO TO CRYPTOECONOMIC SIMULATION: CADCAD BEGINNERS WORKSHOP -

WORKSHOP

Griff Green

__

This workshop is friendly to any coding level. The only requirement is that you are Code Curious! Bring your Laptop, we will be coding! We will start with a quick overview of why it is so important to create simulations, specifically as it applies to the Commons Stack, and then we will put our heads down and start working on a cadCAD tutorial with technical support. If you are familiar python or agent based modeling you will be ahead of the curve and there will be challenging exercises for you to work on. This will truly be enjoyable for all levels. DECENTRALIZING THE GENERATION OF MARKET ALPHA USING BLOCKCHAIN DATA -

TALK

Maksim Balashevich

__

A primer on developing market strategies by leveraging on-chain and social media information, and the roadmap to decentralizing market know-how and alpha creation.

dApps / UX /UI

__

HOW I TOKENIZED MYSELF, TWICE - TALK

Alex Masmejean

__

- I got sent 1500 DAI to Berlin from California on 5 days notice - debt is cash, so my debt was tokenized - 10% interest + principal - Pay it forward (Ethereum culture and great community)

- Burnt by AAVE

- Following this debt token, TryRoll.com tokenized me $ALEX - Onwards with ISAs & crypto and its future implications BETTER UX THROUGH META TRANSACTIONS – LESSONS FROM OUR EXPERIENCE BUILDING UNIVERSAL LOGIN - TALK

Alex Van De Sande

__

In 2019 we decided to improve the Ethereum onboarding experience by using meta-transactions, relayers, ENS and a multisig contract account. In this talk we share our progress and what we learned on UX

doing that.

EVOLVING DESIGN IN WEB3 THROUGH OPEN SOURCE PRINCIPLES - TALK

Amy Jung

__

In Web3, open source is a default setting. Then Design too, is expected to function with the same ability to look inside the process at any time and facilitate permission-less collaboration. How can we evolve traditional design with these open source principles? This talk brings together a mini-history of Web3 Design and its driving forces, as well as lessons from UX Audits, Burner Wallet collaborations, Design Systems, and more. BIZ DEV 101: STRATEGIES FOR SCALING - WORKSHOP

Ashleigh Schap

__

"An in-depth strategy workshop for crypto projects that are seeking to improve messaging around their products, develop business development strategies and scale their growth." #LOCONOCO: HOW NO-CODE AND LO-CODE TOOLS WILL TAKE ETHEREUM MAINSTREAM

- TALK

Dennison Bertram

__

No-Code tools are quickly rising in the Web2 world, but what about Web3? No-code services like Squarespace, WebFlow, Wix, Shopify and others now power tens of millions of websites on the internet yet in blockchain we are still focused on builders who know how to code. Following the proof-of-concept demo of DappHero in November 2019 where typical no-code website was converted to a dApp in seconds, a vibrant discussion has emerged around getting not just 1 million developers in Ethereum in 2020, but 1 million designers, creators, builders, innovators and more. Thus the Lo-code No-code movement was born! CASSANDRA CROSSING THE DIAMOND: TIPS & TRICKS FOR ALIGNING ON YOUR

PRODUCT - TALK

Chriss Sugg

__

This talk will center around one of the most important stages in the product design process, namely the point of alignment on the problem. With the British Design Council’s Double Diamond design process as our model, we will explore how to cross the diamond from problem discovery to problem alignment. It is at this point in the process where cross-functional communication and alignment on user needs is essential. We will touch on the value user research and techniques that have worked at Coinbase for gaining team-wide buy-in. Open to designers and non-designers alike! IMPROVING WALLET UX AND SECURITY THROUGH A DECENTRALIZED METADATA AND SOURCE CODE REPOSITORY - TALK Christian Reitwiessner

__

Transaction confirmation dialogs are still the same as in the dark days of Frontier. A popup asks you to confirm sending zero Ether and a bunch of hex characters to a contract. Clicking the "confirm" button now could mean that you finally get access to that rental hoverboard, but it could also mean that you lose your beloved super rare cryptokitty. The interesting fact is that the solution has been there for a long time: The Ethereum Natural Language Specification (natspec) combined with on-chain metadata hashes. We present a system that makes metadata, ABI, natspec and contract source available in a verifiable and decentralized manner such that it can all be easily used in wallets and other tools. THE ESSENTIALITY OF PRODUCT DESIGN CONCEPTS WITH DAPPS - TALK

Clement Hugbo

__

This would be typically focus on the importance of UI/UX designs and graphics with the development of Decentralized applications. How the flexibility designs and prototypes of dApp makes the entire work flow and integration of Blockchain much more easier to grasp, develop, implement and used for real-time daily activities both by developers and the general Blockchain community. BLOCKCHAIN AS A SERVICE PRODUCT MARKET FIT - WORKSHOP

Enrico Mariotti

__

SMART CONTRACT WALLETS AND MAINSTREAM ADOPTION - TALK Itamar Lesuisse & Julien Niset

__

2019 saw the smashing of some of Ethereum's biggest usability pain points. What can smart contract wallets achieve in 2020 and what does this mean for the mainstream adoption of Ethereum? DESIGNING ETHEREUM USER EXPERIENCES FOR HUMANS + SPECIAL ANNOUNCEMENT AND DEMO OF A NEW MAINSTREAM PRODUCT LAUNCH - TALK

Jason Goldberg

__

In this talk we'll present how user-centric design principles can be applied to build crypto apps that people use and find valuable, discuss the Pepo tech stack, and introduce and demo a well-known crypto company launching its own embedded app token using the same Ethereum technology that powers Pepo. A NEW ART MARKET - TALK

John Crain

__

This talk will dive into the evolving world of NFT art. I'll review the history of were it's been, how VR fits into the story, and were we

are heading.

ADVENTURES IN LAYER 2 - TALK

Juuso Takalainen

__

I’ve spent the last year building a custom layer 2 solution for Streamr Community Products. Experiences with building a custom layer 2 solution for distributing the revenues accumulated into the Product on the Streamr Marketplace between thousands or potentially millions of

data producers.

The problems along the route included things like liveness requirements, robustness in the face of Ethereum re-orgs and network failures, figuring out threats and worst-case scenarios, and possible

mitigations.

The talk is aimed at buidlers of any experience level, who are interested in scalable micropayments, or just what it is to build side-chains or scaling solutions to Ethereum. THE STATE OF ETHEREUM USABILITY: UX DESIGN PRINCIPLES TO SHAPE CRYPTO SECURITY PRACTICES FOR THE BETTER. - TALK

Kosala Hemachandra

__

The current state of Ethereum usability shows there is no real customer service when it comes to crypto. This makes wallet interfaces an integral touchpoint between users and the blockchain that will shape not only their experiences from an aesthetic point of view but also educate them about how to best navigate this complex technology. MEW can speak about the security practices users have become accustomed to and how we need to move forward. They can also share about advancements in privacy, MEW’s approach to UX and what’s at risk if we don’t address this crucial hurdle as an ecosystem today. THE NEXT FRONTIER FOR DEFI: HOW MULTISIGS WILL BRING THE NEXT $1B TO DECENTRALIZED FINANCE - TALK

Lukas Schor

__

THAT NEVER EVEN CROSSED MY MIND! HOW TO SPOT & FIX YOUR COGNITIVE

BIASES - TALK

Sasha Tanase

__

As UX Researchers our worlds are constantly populated by our user’s cognitive biases. We may be aware of them when it comes to our users. But are we aware of them when it comes to ourselves? Because Blockchain is relatively new and us, researches, may have been focused on more hands-on issues we may have forgotten to check our own

cognitive biases.

I have hardly accepted that giving our nature as human beings we are constantly having biases which may drive us off the path and make us turn a blind eye to feedback. As a Product Designer in a blockchain company, I have been wrong many times in my assumptions and I have spotted many biases in my team members and in the users, too. So how can we change this? OMEN - SOLVING THE PREDICTION MARKET LIQUIDITY PROBLEM - BY DXDAO -

TALK

Stefan George

__

Omen is a new decentralized prediction market offering operated by the dxDAO based on Gnosis's Conditional Tokens Framework. Currently, most prediction markets like Augur are using an order book model, which requires liquidity providers (market makers) to implement trading strategies. This requirement and the gas costly operation of an order book are major blockers to the adoption of prediction markets. Omen is solving the liquidity problem by using crowd-sourced automated market makers to provide liquidity using a simple predefined trading strategy. Based on the Uniswap model, liquidity is provided and incentivized by adding a spread to the outcomes, which is given to liquidity providers. Markets are resolved by utilizing the realit.io escalation process with the dxDAO as possible final arbitrator. This combination of building blocks allows users to setup a prediction market on Omen within 60 seconds incentivizing participation from the

start.

The presentation will cover all parts of Omen in detail and explain how you can start your first prediction market. CONNECTING GASLESS MULTISIGS TO PROTOCOLS - TALK

Theophile Villard

__

1. introduction to multisig wallet contracts (personal or business) 2. connecting them to decentralized protocols (like ENS) 3. making them gasless with the Gas Station Network and their relayers HOW POPULAR ARE SMART CONTRACT WALLETS, REALLY? - TALK

Tobias Schubotz

__

Smart contract accounts and wallets are becoming increasingly popular. Gnosis is known for building multi-signature wallets such as the Gnosis MultiSig and the Gnosis Safe. Other popular smart contract wallets are Argent, Dapper, Monolith, and proxy accounts used by Instadapp and Maker. In this talk, we will dive into the actual usage analytics of smart contract accounts. After briefly touching base on the advantages of smart contract accounts over externally owned accounts (EOAs), we will share insights and what we found to be useful metrics, including the number of deployed instances, the number of funds stored, activity, transfer volumes, and user retention. The presentation will close with a summary of learnings, challenges, and how we intend to overcome these with the Gnosis Safe.

Ξ2DΦ - TALK

Tomasz Stanczak

__

I will be talking about the integrated DeFi, data marketplace, Eth1 and Eth2 clients in Nethermind. PROGRAMMABLE BANK ACCOUNT FOR DEFI - TALK

Alex Bash

__

In this talk, I will discuss how to create a Coinbase-like experience while staying non-custodial by leveraging the power of smart-contracts. I will discuss the critical role composability plays in the DeFi ecosystem, as well as the importance of the UX for mass adoption. I will show how the combination of a DeFi interoperability layer and a secure Gnosis Safe smart-contract based wallet allows us to create a unified and secure cross-device experience for our users. During the talk, I will compare a standard EOA (externally owned accounts) with a programmable smart contract-based account, and outline the possibilities the latter approach creates. DAPP DEVELOPMENT ON SWARM - WORKSHOP

Gregor Žavcer

__

Swarm is a distributed storage platform and content distribution service, a native base layer service of the ethereum web3 stack that aims to provide a decentralized and redundant store for dapp code, user data, blockchain and state data. Since the last EthCC there has been big advances and Swarm is now ready for developers to start buidling dapps that push the decentralised vision further, towards the world computer. The talk will give an overview of new features and outline future plans and developments of Swarm and the ecosystem.

Welcome.

NATIVE DAPP SUPPORT IN WALLETS - THE STARKEX CASE STUDY WITH LEDGER AND WALLETCONNECT - WORKSHOP Louis Guthmann & Nicolas Bacca

__

For most dApp today, integration with wallets is limited to signing some data without the ability to verify what is being signed. This requires a lot of trust in the UI for users. To minimize this required trust, we need wallets to be able to understand and parse the data the

user sign.

With the launch of StarkWare's first product and its requirements for specific cryptography, a collective effort has been set in motion to improve both the security and the dApp UI on wallets. Ledger, WalletConnect and StarkWare will present how they managed to define and work together to create what could become the blueprint for native

dApp integration.

HACKING TORNADO.CASH TO SUPPORT GASLESS TOKEN MIXING WITH GSN2 - TALK

Liraz Siri

__

How we hacked Tornado.cash to support gasless token mixing with the new GSN2, and how the GSN2's support for gasless interaction with unmodified smart contracts creates a new 'Gas as a Service' business model for wallets and network infrastructure providers. Decentralised Finance

__

BUILDING A COMPLIANT AND ACCOUNTING-READY BOOKKEEPING SYSTEM FOR DECENTRALIZED FINANCE - WORKSHOP

Antoine Scalia

__

I would highlight the accounting and tax challenges that decentralized finance is raising, based on a few examples of staking and lending activities. Based on these challenges, I would share a few best practices that companies and investors should follow if they want to

be compliant.

NEW FRENCH REGULATORY FRAMEWORK FOR DIGITAL ASSETS SERVICES PROVIDERS

- TALK

Arnaud Grunthaler

__

French government recently published application regulation applying to Digital Assets Services Providers (now regulated in France according to Loi Pacte). France is the first nation setting up a complete regulatory framework for services providers offering services around crypto and tokens (not qualifying as financial instruments). This is a great opportunity to explain to the Ethereum community the scope and content of this new regulation (sale and purchase of crypto/custody/investment advice/reception and transmission of orders/management of portfolio/undertaking of cryptos/placement/running an exchange, etc.) SEVEN DEADLY SINS: MANAGING LEGAL & REGULATORY RISK IN DEFI - TALK

Badri Natarajan

__

This will be a talk about dealing with regulators and managing legal risk, particularly as a startup in the DeFi space. Attendees will learn practical strategies and approaches to deal with regulatory pressures, legal uncertainties and potential litigation, as well as 7 key mistakes to avoid. In other words, this talk will set out a framework through which DeFi/crypto ventures can better understand the legal risks and uncertainties they face and how to mitigate them. An earlier version of this talk was delivered at D1Conf 2019 in Malta (the decentralized insurance conference organized by Etherisc). DEXS FOR A MULTI-TOKEN FUTURE - TALK

Christiane Ernst

__

With the DutchX, we learnt a lot: from mechanism design, user experience, governance, iterative processes, liquidity and launch that we gladly applied to the next exchange design, the Dfusion (working title), featuring batch auction design. The Dfusion is about to move from research stage to testing stage: theory predicts that it will be a very powerful exchange, providing liquidity through ring trades and “fairer” prices through batch auctions. It is yet to be determined if reality will follow suit! With the rise of many ERC20 tokens, particularly stablecoins, it’s the right time to try out this completely new mechanisms to match the decentralized and fragmented world we’re embarking on. THE YIELD PROTOCOL: ON-CHAIN LENDING WITH INTEREST RATE DISCOVERY -

TALK

Daniel Robinson

__

This talk will present a sketch of a new building block for decentralized finance: yTokens. yTokens are like zero-coupon bonds: on-chain obligations that settle on a specific future date based on the price of some target asset, and are secured by collateral in another asset. By buying or selling yTokens, users can synthetically lend or borrow the target asset for a fixed term. yTokens are fungible and trade at a floating price, which means their “interest rates” are determined by the market. The prices of yTokens of varying maturities can be used to infer interest rates, and even to construct a yield curve. yTokens can be built using an on-chain price oracle, or, when the target asset is an on-chain asset, using “physical

settlement”.

THE GROWTH OF DEFI AS SEEN THROUGH ON-CHAIN DATA - TALK

Deniz Omer

__

Kyber is integrated into 70 different dapps and wallets. With all this on-chain data generated through these integrations we can get great insight into how different parts of the Ethereum ecosystem are growing. This talk highlights the data that shows the explosion in DeFi data. We share data on volumes, new users, average trade sizes, and other interesting metrics from the last year. FAIR PRICE FINDING IN A DECENTRALIZED EXCHANGE ECONOMY - TALK

Felix Leupold

__

With dƒusion, we are launching a decentralized exchange that makes use of a novel auction mechanism. dƒusion creates batched multi-token order books which are settled with uniform (thus intra-arbitrage free) clearing prices. Full decentralization is achieved by making the settlement process permissionless and allowing anyone to submit a “better” solution within a given time. In this presentation we focus on how to quantify “better” prices. We examine some classic auction design approaches such as maximizing trader’s welfare/utility and demonstrate their limitations when

applied to the EVM.

From there we will derive the metric used in dƒusion to find the “fairest” settlement. Finally, we motivate why this mechanism is superior in highly fragmented markets (e.g. USD stablecoins). DEFI ADOPTION? LET'S LOOK AT THE NUMBERS. - TALK

Fredrik Haga

__

Deep dive in what DEX traction actually looks like. What does the volume growth look like? How many users? What share of usage is from

whales?

A PREDICTION MARKET IS NOT A PREDICTION MARKET IS NOT A PREDICTION MARKET: A SHORT TAXONOMY OF PREDICTION MARKETS BASED ON TECHNOLOGICAL UNDERPINNINGS - TALK

Friederike Ernst

__

While the idea behind prediction markets is universal, the way in which prediction markets are implemented varies significantly depending on the degree of decentralization and exact architecture of their core three components: Market setup, trading mechanism, and oracle resolution. I will present a survey of blockchain prediction markets that are currently live, comparing and contrasting their design architectures. You should come away from this talk feeling you understand the current prediction market landscape and why teams made the product decisions

they did.

UNISWAP V2 - TALK

Hayden Adams

__

Give an overview of Uniswap V2, which includes arbitrary erc20/erc20 pairs, oracles, and other improvements MANAGING RISK IN DEFI - TALK

Hugh Karp

__

Interacting with DeFi smart contracts has a great opportunity for returns but also comes with risks. We have developed a simple framework that can be used to assess risk and understand what actions

you should take.

LEGAL TROUBLESHOOTING FOR DEFI PROJECTS: DATA & RESULTS - TALK

Jacek Czarnecki

__

At Devcon 5 I led a first of its kind workshop on Legal Troubleshooting for DeFi Projects. Workshop participants answered questions in multiple polls related to most important legal problems of DeFi, forming an unique data set. It is now time to show data and results, and present the conclusions to the DeFi and Ethereum

communities.

BECOME A CRYPTO FUND MANAGER ON MELON - TALK

Jenna Zenk

__

Melon ecosystem and roadmap overview & a special announcement TOKENIZING THE WORLD OF SPORTS BY LEAVING BLOCKCHAIN BEHIND - TALK

Jonas Rubel

__

Why Sports is a case that could be important for achieving mass adoption and why we had to come up with an unconventional go-to-market approach (by the standards of blockchain companies). SHIFTING FROM "EQUITY" TO "SHARED VALUE AGREEMENTS" - TALK

Justin Ahn

__

A review of Quidli's pivot from applying security tokens for equity to tokens as synthetic compensation in order to address issues of control, taxation, and securities compliance; and what opportunities this creates for introducing more DeFi elements to businesses,

business use cases.

PEOPLE POWERED MONEY ON THE TRUSTLINES NETWORK - TALK

Kristoffer Naerland

__

"People-Powered Money" is an under-collateralized form of blockchain-based credit. This credit can be created without a pre-funded crypto wallet, access to a bank, or an exchange account. At EthCC, People-powered money will be shown, for the first time, live on the Trustlines Blockchain. In 2019, the Trustlines Blockchain, a minimal Proof-of-Stake sidechain to Ethereum, was announced at EthCC. It launched roughly six months later. Blockchain-based mutual credit named "People-Powered Money" is planned to go live in Q1 of 2020. People-powered money is stored on-chain but can be created and used without a prefunded crypto-wallet. We’ll explain how the protocol and incentives work, and have a mobile app available that the audience can download and use. ROTKI, THE FINANCIAL TOOL THAT RESPECTS YOUR PRIVACY - TALK

Lefteris Karapetsas

__

Rotki is the portfolio tracker and accounting tool that respects your privacy. In this talk we will see what it is, what problem it solves and what's new in the latest version. More specifically how it integrates with DeFi and general accounting for the ethereum

blockchain.

THREE WAY ATOMIC CROSS CHAIN SWAP - TALK

Léonard Lys

__

My talk will be a demo of a three way atomic cross chain swap between btc, an ERC721 token and tezos. USING CONDITIONAL TOKENS - WORKSHOP

Lu Hua

__

We will setup, inspect and apply conditional tokens.

We will

* prepare conditions with various oracles * collateralize them with different ERC 20 tokens * send and receive the ERC 1155 conditional tokens * see how conditions combine * resolve conditions and redeem conditional tokens * touch on concepts like

- simple escrow

- prediction markets

- futarchy

THE NETWORK GLUE: THE ROLE OF THE APPLICATION-LAYER IN FOSTERING DECENTRALIZATION AND PARTICIPATION - TALK Mara Schmiedt & Collin Myers

__

Friction, fragmentation and regulatory uncertainty - the road to launching and participating in token-powered networks is hard. How has the ecosystem evolved and what role does the application-layer play in it's success? Find out how Activate is enabling the decentralized networks of tomorrow. THE NEW ECONOMIC PARADIGM - TALK

Mel Gelderman

__

The future of the global economy won't rest on those repurposing the same systems we already have in place, the future of economies will rest squarely in a new-decentralised paradigm, one built on the backbone of blockchain. HOW AGGREGATION WILL IMPROVE LIQUIDITY ON DEXS - TALK

Mounir Benchemled

__

2019 is without a doubt a historical year for decentralized exchanges

and DeFi overall.

DEX volume has skyrocketed this year while DeFi locked value is almost at a billion dollar. This significant growth made our community to raise the bar by establishing more and more ambitious milestones. To get there, we need to solve one of the biggest challenges of DeFI - low liquidity. This is one big thing that holds back retail and big investors in switching to DEXs. One way to tackle this issue is

aggregation.

FLASH LOANS: THE GOOD, THE BAD, AND THE UGLY - TALK

Stani Kulechov

__

Rehypothecation is an substantial practice in traditional finance to re-use assets that are used as collateral. Reusing assets will increase the utilisation of collateral and channels higher yields to depositors and lower rates to borrowers. Stani from Aave showcases how rehypothecation is achieved in DeFi by unlocking value with tokenisation and flash lending. BUILDING THE FUTURE OF BUSINESS BANKING WITH CRYPTO - TALK

Thibaut Sahaghian

__

I'll give insights on Multis' backstory and why we want to reinvent business banking, what we've built so far, and how we're through software composability to bring together DeFi and fiat. PTOKENS: EMPOWERING DEFI WITH CROSS-CHAIN COMPOSABILITY - TALK

Thomas Bertani

__

Today, the most successful DeFi tools are on Ethereum. Yet, the biggest cryptocurrencies live on multiple blockchains. The pTokens technology enables cross-chain DeFi composability. The Ethereum blockchain has acted as a catalyst for the growth of a whole new decentralized financial system. Based on the tech stack built in the last 5 years by Provable, the longest-running oracle service, pTokens level up the game by connecting any asset to any blockchain. A decentralized system making the movement of assets unchained thanks to a multi-party computation (MPC) approach where each validating node is secured by Trusted Computing for additional security. By complementing cutting-edge technologies one with the other, pTokens make pBTC on ETH as well as pDAI on EOS and pETH on Liquid possible. NETHERMIND DATA MARKETPLACE FOR DEFI - TALK Tomasz Kajetan Stanczak

__

Presentation of the Nethermind Data Marketplace working on Ethereum Mainnet, presenting DeFi space data providers like Token Analyst, Blocklytics, Kaiko, CryptoCompare data delivered via Nethermind Data Marketplace. Also a note on the planned Nethermind modular DeFi gateway integrated with the Nethermind Ethereum client. RETURNS OF HODLING VERSUS DEFI-ING - TALK

Alex Bash

__

In this talk, we will take a brief tour of different financial instruments of DeFi and compare them to the centralized alternatives. We will cover the process of calculating ROI for instruments like Compound, Uniswap, Token Sets, and others, and then compare past performance of different financial instruments in DeFi. We will end with exploring online tools to monitor the returns of different DeFi

based assets.

This talk will be largely based on this article: https://blog.zerion.…fi-ing-c6f050e89c8e __ SCALING A DEX WITH ZERO-KNOWLEDGE PROOFS - TALK

Will Harborne

__

Last year at EthCC Will Harborne addressed important topics on “Crossing the Chasm” - the necessary steps needed to promote and pave the way for institutional and retail adoption of decentralised exchange platforms. Since then, a lot has developed, and the permissionless DeversiFi exchange has incorporated many of these steps, gleaned insights along the way, and most importantly is integrating StarkWare technology in a first-of-its-kind STARK-powered exchange. This is significant as it will take decentralised trading to the next level, encouraging institutional adoption by providing a scalable, high-speed, private and compromise-free trading solution that competes with centralised offerings. DeversiFi has been created and Ethereum 2.0 is in the picture, therefore, Will can speak on this. THE NEXT $10B IN DEFI: OPENING UP OUR WORLD TO USERS IN THE REAL WORLD

- TALK

Lucas Vogelsang & Gustav Arentoft

__

This talk is in collaboration with Gustav Arentoft from MakerDAO. For DeFi to grow beyond Ethereum early adopters, we need to build lending products and other financial products that compete with traditional finance product. That involves "real world assets". We'd like to go through advantages & disadvantages and present what different people in this space are doing. PUTTING THE 'DE' BACK IN 'DEFI' - TALK

Cassidy Daly

__

A deep look into how DAOs can help us put the 'De' back in 'DeFi'. Starting with a hard analysis of the largest 'Decentralized' Finance projects in the Ethereum ecosystem, and then getting down into the details of how DAOs can be used to actually start to open up different layers of the system. DEFI PRICE FEED: A SIMPLE, SECURE AND AFFORDABLE ALTERNATIVE -

WORKSHOP

Robert Edström & Victor Bonhomme

__

Discover how to leverage an innovative combination of technologies including Trusted Execution Environments (TEE) to feed high quality price data into your Ethereum smart contract, while keeping it as simple, secure and affordable as possible. HOW TO CAPITALIZE ON THE ULTRA-LOW INTEREST RATES IN EU AND VALUE SETTLEMENT OVER THE ETH NETWORK. OPENING THE BOX OF NEW STABLECOIN USE

CASES - TALK

Gregory Klumov

__

STASIS develops the first euro-focused DeFi lending project that will deliver Europe’s ultra-low interest rates to the crypto-community. STASIS DeFi is based on a legacy P2P crowdlending model with proprietary mobile UI, and white-label/API solution for enterprise customers. Our blockchain history includes the biggest euro-backed stablecoin – EURS, which is ranked 1st among non-USD peers by reserves and by DTV, and 6th - overall. We developed a comprehensive infrastructure for EURS with 10 fiat on/off-ramp channels, over 20 exchanges, and 4 service providers that we plan on utilizing in our

lending endeavor.

SECURITY TOKENS, AT LAST! - TALK

Alexis Collomb

__

In this brief talk, we will discuss the pros and cons of security tokens (ST) in terms of quality of service, efficiency and economics, for issuers and investors alike, and what they bring to the table of traditional finance. NEOBANKING: DEFI'S SECRET WEAPON - TALK

Ben Jones

__

DeFi has a distribution problem and solving it requires more than a sexy UI. Bitwala believes in a CeFi/DeFi model where users can have the best of both worlds. Neobanks have become unicorns by improving the interface of finance while DeFi is the first chance to improve the actual infrastructure. Can we have both? NAPOLEONX, 2 YEARS AN ICO - TALK

Stephane Ifrah

__

After having successfully launched our ICO in February 2018, we have managed to deliver on most of our promises: launching our platform displaying our trading signals, acquiring an asset manager regulation in France and launching our first BTC regulated fund. We are now adding a new feature to our token with the launch of napbots.com, a retail oriented platform that rents trading bots based on our existing

strategies.

Developer Tools

__

RADON: A DOMAIN-SPECIFIC LANGUAGE FOR ORACLES - TALK Adán Sánchez De Pedro Crespo

__

Oracles are set to bridge the abyss between the realm of smart contracts and data outside the blockchain. This ambitious goal requires us to remove the inherent indeterminism of real world events by aggregating, filtering and boiling down multiple data points into a single, predictable datum. This is no easy task, especially for a decentralized network. In this presentation, we will introduce RADON: a domain-specific language that provides a new ontology and semantic infrastructure to enable smart contract developers to define how external data will be retrieved, aggregated, filtered, reduced and reported to their contracts. We will reflect on the challenges that we faced and the quirky, wicked and hidden incentives that can be accidentally introduced by poorly constructed queries. ETH.BUILD - WORKSHOP

Austin Griffith

__

web3 prototyping and education WHY YOU DON'T WANT TO DEVELOP ON ROPSTEN - TALK

Afri Schoedon

__

The Ropsten testnet stalled and forked multiple times this year. This talk explains why this is a good thing for core developers and why application developers don't want to rely on the Ropsten testnet but rather deploy their contracts to the Görli testnet. FANTASTIC METRICS AND WHERE TO FIND THEM - TALK

Bogdan Habic

__

Monitoring and alerting are the pillars of making any successful production application. Now, with the rise of more and more production-ready DApps and protocols, we need to reflect on the current monitoring ways and how to apply them to the Blockchain

ecosystem.

BUILDING YOUR OWN BLOCKCHAIN IN UNDER AN HOUR - WORKSHOP

Bruno Škvorc

__

We'll use Substrate to build a custom blockchain from scratch, plug in some custom modules, and launch the nodes that power it in that very

room.

SECRETS, LIES, & SPIES: A HISTORY OF CIPHERS - TALK

Daniela Osorio

__

From the beginning of recorded history, codes and ciphers have been used to carry secret messages. We’ll explore some of the most significant early encryption methods such as the Caesar Shift Cipher, Scytale, the Vigenère Cipher, Playfair, and the Enigma Code. The race to create even more complex codes (and the parallel race to break them) continues today, as computers create “unbreakable” encryptions of sensitive data. WHERE WE GO FROM HERE- A YEAR IN DEVELOPER ADVOCACY - TALK

Dennison Bertram

__

SIMPLE FORMALLY VERIFIED DAPPS—AND NOT JUST SMART CONTRACTS - TALK François-René Rideau

__

Building a DApp is are extremely expensive, slow and risky using today's tool—because a single bug can cause your users to lose all their assets. MuKn is making it orders of magnitude cheaper, faster and safer to build DApps and formally verify them. To achieve this result, we have to step back and recognize that a DApp is much more than a "smart contract", but an interaction between multiple distrusting parties, that runs mostly on their respective computer systems, not just on the blockchain. WHY META-TRANSACTIONS IN ETH 1.0 SUCK AND WHAT WE CAN DO ABOUT IT -

TALK

Patrick Mccorry

__

Meta-transactions are useful when someone else (a relayer) can pay the gas fee on a user's behalf. It is promoted as a great mechanism for on-boarding new users, helping others transfer ERC20 tokens or just to play around with Tornado cash. We have spent the past few months building, any.sender & any.watcher, a financially accountable meta-transaction relayer. Its USP is a smart-contract enforced quality of service or your money back. Along the way, we have faced hurdle after hurdle after hurdle to get it up and running, thanks to a dash of wizardry, unicorns and star-alignment. However 99% of the problems faced are fundamental due to the limitations in ETH 1.0 that can easily be addressed in ETH 2.0. We'll take this opportunity to talk about why meta-transactions are useful, the any.sender design, and what really needs to be fixed in ETH 2.0 to ensure meta-transactions become a native-primitive of the eco-system. THE SECRETS YOUR KEYS HOLD - TALK Frankie Pangilinan & Kyra GauthierDickey

__

KEYCARD: AN OPEN FRAMEWORK FOR SMART CARDS IN CRYPTO - TALK

Guy-Louis Grau

__

We want to explain why smartcards have an important role to play in the crypto sphere 1- to bring security and ownership of their private keys to users 2- to foster adoption of crypto 3- to bring crypto payments in the physical world. And how Keycard as an open source framework can be used by any project to create such smartcards. We will illustrate how Status and other projects have integrated it. ARBITRARY MESSAGE BRIDGE - TALK

Igor Barinov

__

The Arbitrary Message Bridge (AMB) is designed to relay any data between two EVM-based chains. The originating contract encodes data in the form of an arbitrary method call, which can also include or

exclude parameters.

GWASM - CHALLENGES IN SECURING DISTRIBUTED MARKETPLACE IN TRUSTLESS

ENVIRONMENTS - TALK

Jakub Konka

__

Thanks to gWasm, Golem users can now execute Wasm apps on external machines paying their owners for the computational power consumed. However, such a solution entails many security issues. We will present how we integrated the sandbox and what our future plans for Wasm sandboxing are. In any distributed setup with bounded trust, it is difficult to guarantee that the results computed by a random node on the network are in fact correct. In this talk, we will discuss how this was achieved in gWasm, discussing the pros and cons

of the method used.

We will comment on the latest addition to the Wasm world, the WebAssembly System Interface (WASI). We are currently actively helping develop WASI as contributors to the Bytecode Alliance’s Wasmtime

runtime

SETTING UP ETHEREUM WORKFLOWS WITH THE STREAMR CANVAS - TALK

Jonathan Wolff

__

The Streamr Canvas is an open-source, web-based GUI tool for creating workflows around stream processing, with modules that process, source and sink data from diverse sources such as IoT sensors, SQL databases, HTTP, and Ethereum blockchains. In this talk, we showcase Streamr’s Ethereum modules, which allow users to graphically setup Ethereum transactions and listen for Ethereum events. We’ll use Streamr’s GUI to create a simple oracle service that publishes stock price data to an Ethereum contract, and a listener that processes price data to take automated action. The talk will be of interest to anyone who needs to automate and monitor Ethereum jobs, and accessible to

Ethereum newbies

ENS BEYOND ETHEREUM - TALK

Makoto Inoue

__

ENS is mostly seen as a way to store Ethereum Address. I will cover

other use cases.

SMART CONTRACTS AS INDUCTIVE SYSTEMS - TALK

Martin Lundfall

__

Without a proper understanding of what smart contract are, it is difficult to say anything about what they do. This talk introduces Act, a language for specifying the semantics of smart contract and the strategies that can be employed to make claims about their behavior. Such specifications serve as a target against which implementations can be formally verified, and provide the basis for more higher-level reasoning regarding the nature of the smart contract system. WHAT'S NEW IN SOLIDITY - TALK Mathias Baumann & Erik Kundt

__

Presentation & Demonstration of new features in Solidity GRID V2 - ETHEREUM INFRASTRUCTURE AS CODE - WORKSHOP

Philipp Langhans

__

This workshop will start with an update on the development of Ethereum Grid v2.0 and what has happened since Devcon 5. The new concept of workflows and the new docker integration will be covered. We will go over some existing examples of workflows such as - how Grid could be used to get started with Ewasm clients - to get an interactive EthersJS shell with Geth - how to setup your personal infrastructure and private network in the

cloud

And continue by writing and publishing our own first workflow that make use of Ethereum binaries - potentital candidates: Zokrates, Solc, Geth, Clef, Puppeth, Prysm DAPP PROXY CONTRACTS - AN OVERVIEW - TALK

Richard Meissner

__

Smart contracts are at the core of most of the dapps in the Ethereum world. Often, these contracts require users to go through multiple interactions to generate the expected end result. To put it lightly, this could cause some inconveniences. If something goes wrong in the process, you end up in an inconsistent state that users can’t

resolve.

Different teams have started developing “dApp Proxy Contracts”, smart contracts that batch multiple transactions together so that complex interactions can be performed by the user with one click. In this talk, we will take a look at some of the dapps developing this feature including InstaDapp, DSProxy, and the Gnosis Safe, outlining how they work, and comparing similarities and differences. INFURA VERSUS: TOOL FOR BENCHMARKING WEB3 PROVIDERS (REMOTE AND LOCAL)

- TALK

Sean Brennan

__

Revealing an open-source tool for comparing and benchmarking the performance (latency, tx's per second, block header reorganization logic, etc) of different web3 providers, including testing Infura against a locally running Geth node, and comparing Infura vs. Alchemy vs. other endpoints. HOW TO DEPLOY AND CUSTOMIZE BLOCKSCOUT BLOCKCHAIN EXPLORER - WORKSHOP

Victor Baranov

__

BlockScout is an open-source full-featured blockchains explorer supporting any chain based on Ethereum protocol. It supplies the basic features like searching of transactions, viewing of accounts and balances, and verification of smart contracts on Ethereum including forks and sidechains This workshop is for those who want to dive into the learning of the features, that BlockScout provides, and the ways of deployment and customisation for your needs. During the workshop, you will deploy your own instance of explorer. META-TRANSACTION, PANDORA'S BOX OR WEAPON OF MASS ADOPTION? - TALK

Vincent Le Gallic

__

This talk presents a selection of technical challenges we face when creating an onboarding solution based on transactions relayer and smart-wallets. What are the most interesting (and not obvious) issues? How technical infrastructure impact business model and vice versa? With the proliferation of wallet solutions, communication standards are emerging such as WalletConnect. The dilemma between decentralization and seamless UX is about to be resolved. The talk gives an overview of this exciting challenge. ETHEREUM PROTOCOL DEVELOPMENT WITH WHITEBLOCK GENESIS - WORKSHOP

Zachary Cole

__

An overview for Ethereum protocol development using the Whiteblock Genesis platform. During this workshop, we will demonstrate the basics of such technologies as Distributed Hash Tables and gossip protocols which comprise the low-level Ethereum stack. DECENTRALIZED USER ACCOUNT MANAGEMENT - WORKSHOP

Daniel Nagy

__

User account management is an important part of any web application and today users came to expect signle-sign-on solutions where they can use the same identity and login procedure for a number of applications, so that they do not need to safeguard an unreasonable amount of user credentials. We present an Ethereum/Swarm-based single-sign on solution for Web 3 and Web 2 applications that can be easily integrated into existing or new applications and can leverage the security of Ethereum accounts protected by hardware keys, if required. It solves the problems of zero-ether onboarding and potentially addresses the issue of decentralized KYC. The code is open source and available on github. PRESENTATION OF UNIVERSAL CHAIN REGISTRY / INTERCHAIN INITIATIVE -

WORKSHOP

Antoine Herzog

__

Universal Chain Registry: EVM + Cosmos ChainIds presentation: We will present a new initiative to list all the ids of EVM and Cosmos-based chains. We will also speak about the ongoing work to provide a standardization of the chainId format and data structures to represent multi-interface blockchains information. Github: https://github.com/UCRegistry __ Telegram: https://t.me/UCRegistry This initiative has been founded by several parties, including Pedro Gomes founder of Wallet Connect, IOV,

etc.

ETHEREUM MAGICIANS: INTRODUCING OPERATIONS RING - TALK Anett Rolikova & James Pitts

__

Anett and Jamie will introduce the Ethereum Magicians and Operations Ring of Ethereum Magicians. What does Ethereum Magicians, their role in the community. This will be a short Intro session at the beginning of the rest of Ethereum Magicians sessions. ETHEREUM MAGICIANS: RUN ETHEREUM NODE - TALK Felipe Faraggi & Greg Jeanmart

__

Felipe and Greg will show you how to set up and run the Etherum Node so you all can run Ethereum node, what advantages, disadvantages are with running Ethereum node ETHEREUM MAGICIANS: ETH1.X STATELESS ETHEREUM - TALK Piper Merriam & Alexey Akhunov

__

Abstract: ETH1.x Stateless Ethereum Working Group lead by Piper Merriam is going to talk about progress made on Stateless Ethereum. How the current Ethereum is going to be stateless and move into ETH1.x Stateless Ethereum including Q&A session with Devs and Researchers from Stateless Ethereum Working Group. ETHEREUM FROM PRODUCT PERSPECTIVE. - WORKSHOP

Josef Jelacic

__

Let's step back and let's look at Ethereum as a software product in the grand scheme of solutions out there. What purpose does the platform fulfill, which market does it serve and who are or will be the users? This session should help us abstract from what we as individuals want Ethereum to become to better understand where is a natural market fit which makes sense to keep in focus. The workshop will be moderated brainstorming where we'll try to figure where Ethereum stands in the overall blockchain landscape. PLUGINS & WORKFLOWS IN REMIX - WORKSHOP Iuri Matias & Rob Stupay

__

Going through various usecases including importing contracts from the local filesystem and EthPM, debugging contract transactions, static analysis, solidity unit testing, verifying source code and publishing contracts to IPFS & SWARM.

Enterprise

__

THE CHALLENGE OF DIGITAL ASSETS CUSTODY - TALK

Charles Guillemet

__

Technical insights on Ledger Vault, the enterprise digital assets

custody technology

INTEROPERABILITY AND MULTI-FACETED ENTERPRISE SOLUTIONS - TALK

Elizabeth Kukka

__

The need for multiple blockchains, at this point, ETC for incentives, ETH for tech, hyperledger for off-chain (for example). And, why enterprise adoption is important > because the mainstream doesn't adopt until enterprise adopts. LAYER 2 FOR DAPPS: WHEN DECENTRALIZED PROTOCOLS MEET THE REAL WORLD -

TALK

Frederico Ast

__

As blockchain projects struggle for mass adoption, the concept of layer 2 gains importance for enabling real world use cases. This talk will review Kleros approach for building an ecosystem of companies which will bring decentralized justice to mainstream uses in finance, insurance and e-commerce. This experience will provide a number of insights for any protocol team to plan their own layer 2 strategy. ONCHAIN AND OFFCHAIN PERMISSIONINING WITH BESU - TALK

Felipe Faraggi

__

This cartoon presentation will explain the differences between the different types of permissioning in Besu (onchain/offchain/node/account) and understand what use cases would need permissioning in a blockchain environment. SELF-CUSTODIAL ENTERPRISES: SECURE DIGITAL ASSET MANAGEMENT FOR

CORPORATIONS - TALK

Anna George

__

With regulations paving the way for institutional and corporate players to enter the digital asset landscape, 2020 will see a need for enterprises to securely store and manage crypto assets. These assets are fundamentally different from traditional assets and come with particular challenges in respect to security and usability. They are bearer instruments; that means, whoever has the private key is able to authorize transfers. Hence, securing this key against both internal and external threats is essential to the assets’ integrity. This talk will discuss how corporations can reduce counterparty risk and build trusted solutions that fit into existing internal processes, accounting practices, and security schemes. CLOSING THE ENTERPRISE FEEDBACK LOOP - TALK

Nicolas Massart

__

How Ethereum enterprise products can benefit from developer, documentation and support teams working together in a still very new environment for our customers. ETHEREUM, PRIVACY AND ENTERPRISE BLOCKCHAIN SOLUTIONS - TALK Pedro Lopez-Belmonte

__

Enterprises have increased the number of blockchain PoC projects, but still the adoption of distributed registry technologies has yet to take off in the enterprise world. We will discuss how to deliver an enterprise blockchain application with topics such as privacy, data ownership or standards, and we will see how luxury industry is leveraging ths technology to bring more value USING QUORUM FOR ENTERPRISE ENVIRONMENTS - TALK

Tyrone Lobban

__

Quorum is a a fork of Go Ethereum client (geth), the official GoLang implementation of the Ethereum protocol, designed to process private transactions with a permissioned group of known participants. It's enterprise-ready, open-source blockchain platform, based on Ethereum that addresses specific challenges to blockchain adoption within an enterprise environment such as privacy, speed, throughput. HOW TO EMBED CRYPTO INCENTIVE IN YOUR ENTREPRISE PROCESS ? EXAMPLE WITH CRUISE BOOKING - TALK

Vidal Chriqui

__

This talk is a return on operating experience gained with enterpises introducing a crypto incentive in their business process. We will explain the benefits of such an approach, and the pratical BTU Protocol plugins needed for abstracting the blockchain complexity to enterprise developers. CRYPTOCURRENCY CRIME AND COMPLIANCE IN 2020 - TALK Willem Van Den Brandeler

__

Cryptocurrencies have the reputation for being cross-border and anonymous, and therefore attractive to bad actors across the world. However, blockchain analysis offers unprecedented transparency into financial transactions, providing insights into the 1.1% of cryptocurrency transactions that were illicit in 2019. In this talk, Willem van den Brandeler discusses our latest original research and case studies on the crypto crime trends shaping law enforcement and compliance in 2020. HOW TO TALK WITH A REGULATOR? - TALK

William O'Rorke

__

Presentation of the main regulated cryptosystems (investment, gaming, KYC/AML, etc.) and the right way to talk with the regulator, i.e. : - how to design a regulatory strategy?

- what not to say?

- be in the head of the regulator - strike the right balance between regulation and operation. These tips are relevant all over the world ;) CREATING THE FIRST MASTER'S OF BLOCKCHAIN PROJECT DESIGN IN FRANCE -

TALK

Won Kim

__

Challenges of creating an accredited Blockchain Master's program in

France including:

-accreditation requirements -constructing a pedagogy (what are the standards for a blockchain

agnostic program?)

-dynamic nature of the blockchain ecosystem -promoting on a shoe-string budget -Profiles of the first class of students and their satisfaction so

far.

ARCHITECTURAL DESIGN OF INSTITUTIONAL DIGITAL CURRENCIES - TALK

Xavier Lavayssière

__

The digitalisation of financial assets is a relatively old process to which new technologies and architectural designs offer new perspectives. The purpose of this work is to highlight the economic and legal consequences of various technical architectures to represent

digital currencies.

THE REFERENCE ENTERPRISE BLOCKCHAIN ARCHITECTURE, INTEGRATING WITH PEGASYS ORCHESTRATE - TALK

Nicolas Maurice

__

I am a Tech Lead and blockchain Architect at ConsenSys, where I first led the implementation of blockchain platforms for the account of major actors in the finance industry before co-founding PegaSys Orchestrate an infrastructure platform for managing Ethereum transactions recently launched by PegaSys. I will share my experience architecting and building blockchain platforms and detailing how we designed PegaSys Orchestrate to make it a blockchain infrastructure compatible with every business case and every Ethereum network.

Ethereum 2.0

__

DESIGN CHOICES IN ETH2.0 - TALK

Aditya Asgaonkar

__

The ""holy grail" of scalability (a.k.a. sharding) has presented protocol designers with a number of tradeoffs in the design of Eth2.0. This talk will take a look at the important tradeoffs to be made, and how the Eth2.0 choice takes a balanced approach in the spectrum of choices available, including those for: - Separation of validation & consensus - Validator set sampling - Cross-shard transactions CROSS-SHARD TRANSACTIONS - TALK

Aditya Asgaonkar

__

The design of cross-shard transactions have a profound impact on the end users of a sharded system. In this talk, we will discuss the requirements of the ideal solution. Then, we will explore the design space of cross-shard transactions: synchronous vs. asynchronous, protocol-delivered vs. user-delivered. We will also discuss cross-shard contract calls and how the execution layer can interface with cross-shard transactions. TO BE ANNOUNCED - TALK

Alex Beregszaszi

__

ETH1 MEETS ETH2: FORECASTING THE FUTURE - TALK

Alex Stokes

__

Lots of exciting work is happening with eth2 and eth1.x. While the R&D pushes forward, it raises an important question: how will we merge the two systems? The ultimate goal is to migrate the economic activity from today's chain to the new sharded system but the exact plan is still unknown and depends on which relative pieces of each effort are production-ready sooner. This talk will discuss the relative timing and challenges behind the possible options by sharing the latest research on the finality gadget, L1 data layers, EEs and stateless clients. I aim to gather community feedback during the Q&A section which will help me direct my own efforts under the finality gadget working group (you can see the latest update here at Devcon 5: https://slideslive.c…tting-eth20-to-work __

).

INTERBLOCKCHAIN COMMUNICATION FOR ETH 2.0 - TALK

Christopher Goes

__

The interblockchain community protocol will faciliate permissionless interoperation between smart contracts on Ethereum 1.0/1.x & Ethereum 2.0, Cosmos zones, Polkadot parachains, Bitcoin & more. The first half of this talk presents the protocol construction, notes security properties & consensus requirements, explains the message channel interface exposed to smart contracts & modules, and discusses special techniques for bridging Nakamoto proof-of-work consensus blockchains such as Ethereum 1.0/1.x to chains with finality. The second half embarks on a speculative exploration of how IBC can be used to instantiate various sharding topologies, including proxy clients & a hub-spoke model, with particular attention to integration into the Ethereum 2 phase 2 specification process. ETH2REAL WORKSHOP - TALK Hsiao-Wei Wang, Carl Beekhuizen, Dankrad Feist, Diederik “Protolambda” Loerakker

__

Ethereum Foundation research team is focusing on Eth2 research and development. In this workshop, we will discuss some of the most important topics on Eth2 in-depth, including the latest aspects of protocol design, the exciting validator staking plan, and the intriguing research and implementation problems. LIGHTHOUSE: ROAD TO ETH2 MAINNET - TALK

Mehdi Zerouali

__

Present insights on the development of Eth2, and the road to mainnet, with a specific focus on the Lighthouse client. Lighthouse aims to be a leading client for Eth2, and we believe that its development as a secure and performant piece of Ethereum

infrastructure

constitutes a public good. We would like to share our progress,

particularly with

community members intending to become validators when the network goes

live.

Some of the topics I would be covering include: * Security-focussed features: * Testing and correctness: * Performance and storage optimizations * BLS standardization/optimization/testing * Networking improvements: * Insights from testnets, metrics, how to get involved VALIDATOR PRIVACY IN ETH2.0 - TALK Mikerah Quintyne-Collins

__

An overview of the state of validator privacy in Eth2.0. The goal is to introduce the audience to the problem of keeping validators private and anonymous and the potential solutions as it relates to Eth2.0 LIVENESS IN CBC CASPER - TALK

Vlad Zamfir

__

PHASE2 UPDATE FROM QUILT - TALK

Will Villanueva

__

All the latest on execution environments NAVIGATING ETH2 WITH SIMPLE SERIALIZE - TALK

Cayman Nava

__

We dive deeply into Eth2's consensus serialization and merkleization standard, Simple Serialize (SSZ), from a theoretical and implementation perspective. We first discuss the motivation and use of the standard in Eth2 by example. We then analyze tradeoffs between state-of-the-art implementations. Audience: Eth2 implementers, blockchain developers CRYPTOGRAPHIC PRECOMPILE EIPS WORKSHOP - WORKSHOP Louis Guthmann & Tim Beiko

__

Abstract: In this session, we will discuss potential crypto precompiles to be included in future Ethereum upgrades. Specifically, we will discuss EIP-1962, a proposal to add the Eth2 deposit contract curve, and other related EIPs.

Gaming

__

BUILDING A FREE TO PLAY TO EARN GAME - THE STORY OF AXIE INFINITY -

TALK

Aleksander Leonard Larsen

__

The story of Axie Infinity and how we leveraged NFTs to get one of the most passionate communities in all of blockchain gaming. We are now moving from only NFTs to other tokens and enabling a truly player-owned economy. METAFACTORY - DECENTRALIZING THE OWNERSHIP OF BRAND ECONOMIES AND SALE OF CUSTOM, DIGI-PHYSICAL APPAREL - TALK

Drew Harding

__

A background on the platform conception and the goals around the creation of brand economies, profit sharing among participants and sale gamification of custom apparel COLLECTIBLES, CRYPTO-GAMING, NON-FUNGIBLE TOKENS: STATE OF THE

ECONOMICS - TALK

Gauthier Zuppinger

__

Focus on the market, trends, economics and predictions for the non fungible tokens and collectibles markets. Comparison between crypto markets and NFT markets. THE LIMITATION AND POTENTIAL OF BLOCKCHAIN/ETHEREUM GAME - TALK

Jay Lee

__

BLOCKCHAIN GAMING: DEAD OR ALIVE? - TALK

Matías Nisenson

__

Blockchain gaming had its peak several months ago, will it ever come back or was it just smoke? Let's talk tech and business! HOW ETHEREUM WILL DISTRUPT THE GAMING INDUSTRY - TALK

Morten Rongaard

__

Giving the power back to users BUILDING A GAME FULLY ON CHAIN - TALK

Ronan Sandford

__

We'll talk about the benefit and challenges of building a game fully on chain, using Ethernal, A Procedurally generated dungeon game, as an

example

TRUST AND TRANSPARENCY IN ONLINE GAMING - TALK

Ryan Gittleson

__

I'd like to present how p2p technology and blockchain technology can create greater trust and transparency in online gaming. Then I'd like to walk through a short demo of how Virtue Poker works. EMPOWERING CREATORS WITH BLOCKCHAIN AND NON-FUNGIBLE TOKENS - TALK

Sebastien Borget

__

This talk will be about how we are leveraging Non-Fungible Tokens (NFTs) and ERC-1155 (a new standard from which we are one of the 3 main contributors) to enable user-generated contents, with true digital ownership and scarcity, making accessible to anyone (using simple voxel format for the expression of creativity) and enabling anyone to take part in the Metaverse. The Sandbox is a decentralized, community driven platform, where creators can make voxel assets and gaming experiences and monetize them on the blockchain. The interests are aligned between all the users who are contributing to it, players, creators, land owners, curators, etc. -- enabling trading relationship, social relationship, governance and social rules, rewards in-game and many other potential

uses.

GAME ASSETS TOKENISATION DONE RIGHT - TALK

Shaban Shaame

__

WHICH TYPE OF SMART CONTRACT SHOULD I CHOOSE FOR MY COLLECTIBLES? -

TALK

Alex Atallah

__

I've been seeing a lot of confusion over the different options for NFT contracts. Will go over semifungible, fungible, whitelisted, and

presale ones too.

Governance / DAO

__

MARKETING ETHEREUM WITH A NEW DAO - WORKSHOP Alex Masmejean & Manu Alzuru

__

Introducing Marketing DAO, membership & grants proposal. Getting feedback & discussing with the community. UNDER-COLLATERALISED LOAN ISSUANCE USING A DAO FRAMEWORK - TALK Anastasia Andrianova

__

As the DeFi ecosystem evolves, we observe a clear bifurcation into crypto-native models and improvements based on legacy approaches. A reduction of the current over-collateralization margins is an important priority in the DeFi ecosystem and has been one of the focal points of our approach. Right now, several teams in the space, including us, are working in this direction — with different approaches and solutions. During this talk, we will explain how we combine DAOs and uncollateralized loans. A CALL FOR AN END TO TRIBALISM IN ETHEREUM - 2 YEARS LATER - TALK

Bob Summerwill

__

At the opening of ETHCC in 2018 I made an impassioned call for an end to tribalistic behaviour within the Ethereum ecosystem. This was intended as a first step to "clean our own house" and then for the Ethereum community to lead the same charge across the whole of

blockchain.

Since then I have walked the walk on that call by "jumping the fence" and becoming a leading figure in Ethereum Classic, while also remaining part of the Ethereum ecosystem and continuing my work on Enterprise in both EEA and HL. I have been a strong critic of the Ethereum Foundation and Ethereum Core Developers recently, but never of the Ethereum Project. In this talk I will review the call to action I made in 2018, track progress and renew my plea for broader collaboration. This is more important than ever! PROOF OF HUMANITY, A SYBIL-RESISTANT LIST OF HUMANS - TALK

Clément Lesaege

__

On the blockchain no one knows you're a bot. A common problem for decentralized applications is the lack of Sybil-resistant identity systems. Users can create multiple addresses to create spam, bias votes or receive rewards multiple times. We'll start by exploring applications requiring a Sybil-resistant identity system (Universal Basic Income, quadratic funding, product reviews). Then we'll present Proof of Humanity, a system combining social verification with video submission in order to create a Sybil-resistant list of humans. Finally we'll address privacy concerns by showing how to create Sybil-resistant anonymous identities out of Sybil-resistant public ones. GROWING THE HERD: HOW YOU CAN CONTRIBUTE TO ETHEREUM AS A CAT HERDER -

WORKSHOP

Ethereum Cat Herders

__

In this workshop, we will give a brief overview of what the Ethereum Cat Herders are and spend the bulk of the session gathering feedback from the community about how the group can best serve the Ethereum

community.

We will have an open discussion about what Cat Herders initiatives people value most, what things are missing from the Ethereum community and how people can help address these shortcomings, either as a Cat Herder or independently. MAGICIANS AND BUREAUCRATS IN THE ETHEREUM GALAXY - TALK

James Pitts

__

Building on my talk from last year, I will begin with the history of the key people and projects in the Ethereum community, and how the institutions developed. Next, I will examine various governance and organizational experiments, from the EF to core devs to ConsenSys, comparing these to traditional institutions. For the last part of the talk, I will discuss lessons learned and the principles for building lasting institutions which can serve the community. A lengthily dialogue with the audience will follow. SUBJECTIVE AGREEMENTS FOR DAOS - TALK

Jorge Izquierdo

__

DAOs currently operate on completely objective rules: number of tokens, favorable votes casted, etc. This talk will explore how we can bring subjective agreements to DAOs and what they can unlock. It will be a second part to my DappCon talk, updating it with our latest research and progress made in the last 6 months: https://www.youtube.com/watch?v=j3gK48E4h1Q __ THE FUTURE OF STAKING POOLS WITH STAKE DAO BY STAKE CAPITAL - TALK

Julien Bouteloup

__

About Stake DAO, the new for-profit DAO to aggregate delegates, giving them governance rights and allowing them to put their staking tokens on external #DeFi projects. Staking, the decentralized way. TO BE ANNOUNCED - TALK

Matan Field

__

DAO ECONOMICS - BALANCE SHEET CONSIDERATIONS - TALK

Megan Knab

__

Let’s talk about constructing DAO finance. I’ll share a framework for building DAOs from an accounting perspective. I’ve distilled this from working with moloch forks, DAOstack and Aragon DAOs so is translatable across platforms. OPENETHEREUM: TRANSITIONING PARITY ETHEREUM TO THE COMMUNITY - TALK

Phil Lucsok

__

OpenEthereum is the decentralized community-driven ethereum client, formerly known as Parity Ethereum. Run as the first major DAO for a software project, the major client will be developed by major teams in the Ethereum ecosystem. MOVING TO AN EIP-CENTRIC PROCESS: A RETROSPECTIVE - TALK

Tim Beiko

__

After Istanbul, the Ethereum Core Developers agreed to move from our previous network upgrade process to an EIP-Centric one. With Berlin approaching, we can now reflect on the benefits and challenges brought by this new process. This talk will give an overview of how AllCoreDevs used to coordinate network upgrades, what changes were implemented post-Istanbul and what ideas have emerged to keep improving things going forward. PERMISSIONLESS DECENTRALIZATION AND THE LAW - TALK

Vlad Zamfir

__

DAOS WITHOUT ESTABLISHED LEGAL ENTITIES ARE TOO EARLY TO BE PRACTICAL

- TALK

Yalda Mousavinia

__

Every year seems to be the “Year of the DAO”, but we may be a long way away from creating the original vision. The term "DAO" has now evolved to include organizations that are wrapped with a pre-established legal entity. But the most interesting DAOs won’t simply have a single legal entity that is driving all operations. The most interesting ones will include multiple entities that coexist alongside individual contributors. In my this talk, I'll present a new model for a DAO that connects four entities on a blockchain — an association, a Delaware C corp, a worker-owned cooperative, & a 501(c)(3) to create a multi-stakeholder ecosystem that pays it forward: both internally, and externally. REVENUE GENERATING DECENTRALIZED ORGANIZATIONS THROUGH BONDING CURVES,

- TALK

Zhivko Todorov

__

Deep dive into continuous organizations, incl. example of a real-world implementation that we've developed. BLOCKCHAIN VOTING - THE GOOD, THE BAD AND THE UGLY - TALK

Kasimir Blaser

__

In this talk we will cover theoretical concepts of traditional voting, technical challenges on blockchain voting and analyse a customers project and requirements. - Various kind of voting. - The discussions and security of e-voting - Voting on the Blockchain - Compare various Blockchain/smart contract voting approaches - Voting with ERC-20 tokens. The challenges - Voting and Interoperability with HSM and crypto banks Audience Level: Beginner to Intermediate. BUILDING NEW DIGITAL COMMUNITIES, COORDINATION & TOOLING - TALK James Waugh & James Duncan

__

MetaCartel has grown from a single MolochDAO fork into a huge, open community focused on pushing forward Ethereum Dapps.

Other Blockchains

__

LESSONS LEARNT FROM BUILDING BLOCKCHAINS - TALK

Aidan Hyman

__

In this talk, I will go over a few of the different projects we have been working on and some of the lessons learnt. THE GATEWAY FOR REAL-WORLD ASSETS INTO THE BLOCKCHAIN MULTIVERSE -

TALK

Cassidy Daly

__

A case study of Centrifuge Chain on the efficiencies of building a single-purpose chain with a bridge to Ethereum. Though we are built on and loving Ethereum, we have needs that just can’t be met with this architecture as it exists today. Centrifuge Chain is optimized specifically for the transactions required by the Centrifuge protocol. We envision a larger ecosystem of many, connected blockchains- where dApps on Ethereum could use data from other chains, value could move freely, and Centrifuge Chain can enable off-chain assets to access financing through DeFi projects on Ethereum. BRIDGING NON POW/POS SIDECHAINS WITH ETHEREUM - TALK Claudia Bartoli Duncan

__

More and more crypto projects are being designed as Ethereum sidechains, tasked to offload heavy computational operations. However, the interaction these sidechains have with Ethereum must hold security guarantees which match those built from within the smart contract platform. In this talk, we will describe our model for a bridge which enables a trustless interaction between a reputation based sidechain and the Ethereum mainnet. LUKSO - THE BLOCKCHAIN FOR NEW CREATIVE ECONOMIES - TALK

Fabian Vogelsteller

__

Today most Blockchain use cases are less interesting for ordinary users, as they are either very technical, financial focus, or too complicated to use. With the LUKSO Blockchain we focus on creating an ecosystem for applications that are interesting for the 1Bn people on social media, the fashion landscape and the creative industries. EXTENDING ATOMIC SWAPS FOR INTEROPERABILITY - TALK

Jean Yves Zie

__

This talk will about my academic paper "Extending Atomic Cross-Chain

Swaps".

Cryptocurrencies enable users to send and receive value in a trust-less manner. Unfortunately trading the associated assets usually happens on centralized exchange which becomes a trusted third party. This defeats the purpose of a trust-less system. Atomic cross-chain swaps solve this problem for exchanges of value without intermediaries. But they require both blockchains to support Hash locked and Time locked transactions. We propose an extension to atomic swap for blockchains that only support multi-signatures (multisig) transactions. This provides greater capabilities for cross-chain communications without adding any extra trust hypothesis. RUST SMART CONTRACTS IN COSMOS - WORKSHOP

Marko Baricevic

__

The Cosmos-SDK was purpose built for custom application built blockchains and now there have been strides to extend this to allow developers to run a warm VM within their Cosmos-SDK based blockchain. Come learn about Cosmwasm a wasm VM that can be used with the

Cosmos-SDK

OVERVIEW OF MORE THAN 15 ETHEREUM-BASED BLOCKCHAINS - TALK

Peter Eulberg

__

Learn about more than 15 Ethereum-based networks, their particular characteristics, advantages and disadvantages. There is more variety out there than you'd imagine! To tap into the multitude of chains, they are clustered by distinct attributes (PoW/PoS/PoA, live/test, public/private, history/stability, native Gas token...). Some especially noteworthy examples are covered in greater detail. Challenge your assumptions on how things are done and possibly find additional options for your project. Learn from others to make your life easier as a developer and continue to advance the Ethereum ecosystem as a whole. TEZOS, THE BLOCKCHAIN THAT EVOLVES - WORKSHOP

Benjamin Canou

__

In the set of rules that make the Tezos blockchain protocol, the most defining rule is the one to change this very set of rules. In this talk, we explain by example how this works in practice and how far this goes: what could change in Tezos in the future, and what is set in stone (spoiler: not much).

Privacy

__

ZINC: DEVELOPER-FRIENDLY PROGRAMMING FRAMEWORK FOR ZERO-KNOWLEDGE

PROOFS - TALK

Alex Gluchowski

__

We present Zinc: a framework for constructing R1CS-based SNARK circuits. It includes a simple, safe and efficient high-level programming language for defining zero-knowledge circuits, and a ZKP-friendly runtime execution environment. Zinc is designed to make developing scalable and privacy-preserving smart contracts easy. NYM: HOW TO DECENTRALIZE NETWORK-LEVEL PRIVACY USING CRYPTOECONOMICS -

TALK

Harry Halpin

__

Network-level anonymity is necessary for Ethereum if zero-knowledge proof onchain constructions are to have any privacy. Mix-nets are the obvious solution to this problem. This talk will summarize Nym's Rust-based mix-net and how it interoperates with different chains, including Ethereum. Mix-nets provide superior network-level protection than Tor due to cover traffic and delays. Competing "forks" of our original, abandoned codebase like Meson do not include parameters and have However, there is the hard question of how to set these parameters and how to decentralize the PKI of the mix-net, which determines which nodes are part of the network at a given time. Using an approach based on blockchain consensus and VRFs, will be show how we solved the hard problem of decentralizing a mixnet. BIG ZKSNARKS CIRCUITS FOR ZK-ROLLUPS WITH CIRCOM - TALK

Jordi Baylina

__

We are going to present the new version of circom: - How it can be used to generate big circuits appliable in the rollup-like structures. - The security warranties that the language supplies. - Discuss about some low level highly optimized finite field libraries in Intel assembly and web assembly. - We will also provide an update of the current development of the

iden3-zkRollup

C.R.E.A.M, ZK-SNARK BASED PROTOCOL FOR PUBLIC ELECTIONS SYSTEM” -

TALK

Kazuaki Ishiguro

__

Proposal of interface for voting using zk-SNARKs. This standard provides a means of token transfer to effect basic anonymous voting using zk-SNARKs. A protocol that meets this minimum requirement is named CREAM protocol because of its anonymity and the characteristics of the contract method.

ZK-DEX - TALK

Kevin Jeong

__

We introduce zk-DEX, which allows privacy to be guaranteed in the process of trading Ether and tokens. zk-DEX is a private decentralized exchange that uses zk-SNARKs during the transaction process to ensure that the identity and volume of the traders are not revealed, and it has been inspired by zcash and zk-Dai. In zk-DEX, all assets are encrypted and stored in blockchain in the form of a note, so only owner of that note can know details of note such as the owner or amount. Also, because only the encrypted note is used in the exchange, the third party cannot know the identity of traders and amount in the process of order. It allows users to make trading safely without revealing their identity even in the blockchain where all data is public. OVERVIEW OF ZERO KNOWLEDGE PROOFS - TALK

Laurence Kirk

__

An introduction to zero knowledge proofs, and an overview of the

latest research

SEMAPHORE : ZERO-KNOWLEDGE SIGNALING - WORKSHOP

Philippe Métais

__

Six months ago, Barry Whitehat introduced Semaphore, a general solution for zero-knowledge signaling. This solution manages on-chain sets of users who are allowed to broadcast signals anonymously. For the first time, such a user may prove on-chain that he is part of an anonymity set without revealing

his identity.

This 60-minute workshop would introduce core concepts of Semaphore before presenting a development flow on this framework. A practical example around voting systems would be presented. Attendees would deploy Semaphore contracts, interact with them anonymously and even develop their own zero-knowledge logical circuits. Binary, multiple-choice, ranked voting : at the end of the workshop, they should be able to implement all of these anonymous voting systems on

the Blockchain.

HOPR AS A METADATA PRIVACY FOUNDATION OF THE WEB3 - TALK

Robert Kiel

__

Short introduction why metadata and especially network-level privacy matters in the context of web2 and web3. Followed by an overview of the HOPR ecosystem and a brief explanation of the mechanisms on message and payment layer. This will cover HOPRs Proof-Of-Relay scheme as well as its payment system which is influenced by payment channels and aggregatable probabilistic payment tickets. First demo of the public HOPR testnet. CRAZY DAPPS YOU CAN BUILD WITH IEXEC AND CONFIDENTIAL COMPUTING! -

TALK

Gilles Fedak

__

Confidential computing is a new paradigm that allows encrypted data to be processed securely without being revealed at any time. Confidential computing brings privacy to Dapps: application developers can now provision their Dapps with users' secret information opening a wide range of new usages and applications for their Dapps. In this talk, we'll introduce a new example of Ethereum applications that can leverage confidential computing. iExec is the first decentralized marketplace for cloud computing resources. The iExec network is made up of providers of computing power, applications, and datasets - allowing for on-demand access to cloud computing resources. The project has a particular focus on trusted and confidential computing to strengthen security within distributed networks. We’ll introduce how the iExec SDK allows developers to easily set up their application to be powered by a decentralized and distributed computing network. We'll give an overview of the iExec solution for off-chain end-to-end privacy-preserving computing. Come along and find out how powering your application by a decentralized and distributed network of computing nodes can be as simple as setting up a docker image! HOW TO BEAT SURVEILLANCE CAPITALISM AND RECLAIM YOUR PRIVACY. - TALK

Seven Waterhouse

__

Navigating blockchain’s choppy waters: Orchid recognized early on how important it was to focus on correctly building its product, regardless of how much time it took. Seven’s decades of experience in building (and performing due diligence on) startups allowed him to navigate the busts and booms of the industry, holding a steady course, rather than continuously introducing new strategies. Seven points to several key moments of foresight in those years that helped drive the company to success. Key moments for the company included selecting business partners that share the same long term vision, and a commitment to the Ethereum network and building vertically on Layer 2 rather than creating competing infrastructure. INTRODUCING GNARK, A FAST ZERO KNOWLEDGE PROOF LIBRARY - TALK

Thomas Piellard

__

Presentation of an efficient implementation of the Groth16 protocol in

pure Go.

INTEGRATION OF THE SAPLING PROTOCOL IN TEZOS - TALK

Marc Beunardeau

__

The Sapling protocol developed by the Electronic coin company (creator of the Z-cash blockchain) realizes privacy preserving transactions for

fungible tokens.

In this talk, after a brief introduction of Sapling, we will discuss the integration of such a protocol in a different blockchain (Tezos), its challenges, design choices, and usage of Tezos's on chain governing mechanism. NON-CUSTODIAL PRIVACY SOLUTION FOR ETHEREUM - WORKSHOP Roman Semenov & Alexey Pertsev

__

A brief overview of existing privacy solutions on Ethereum and other blockchains. A deeper explanation of how Tornado.cash works under the hood with Live Demo and privacy tips. Our plans and future of privacy

on Ethereum.

ZEROPOOL - PRIVACY POOL ON ETHEREUM WITH ZK - TALK

Kozlov Nikita

__

A brief description of new solution for Ethereum that allows to make private UTXO transactions with optimized gas fees and atomic swaps. SNARK-LED PRIVACY ON ETHEREUM - TALK

Zac Williamson

__

We explore how SNARKs are being used to bring fast privacy to Ethereum, and explain the huge advances made in 2019.

Scalability

__

ZK SYNC: USER-CENTRIC APPROACH TO SCALABILITY WITH ZERO-KNOWLEDGE

PROOFS - TALK

Alex Gluchowski

__

ZKP-based approach to blockchain scalability not only offers highest security, but can also significantly improve usability compared to other scaling methods. In this talk we will dive into ZK Sync design that was tailored to take maximum advantage of both aspects. TURBO-GETH AND STATELESS ETHEREUM - TALK

Alexey Akhunov

__

Main differences between Turbo-Geth and Geth, some recent data from Stateless Ethereum prototype (based on Turbo-Geth) STATE OF ROLLUPS - TALK

Chellani Vaibhav

__

- Different rollup designs - Different tradeoffs for both - Which one to use for your application - pros and cons of rollups - Comparison with other scalability techniques THE STATE OF STARK TOOLING - TALK

Eli Ben Sasson

__

TBD - TALK

Franziska Heintel

__

TBD

DECENTRALIZED WORKLOAD DISTRIBUTION WITH VRFS AND ALGORITHMIC REPUTATION SYSTEMS - TALK Gorka Irazoqui & Mario Cao

__

Scalability lies at the core of every new sidechain design. However, effective work distribution among a decentralized subset of peers can be challenging without proper selection mechanisms that avoid oligarchy generation and, targeted attacks.We will explain how these could be achieved through a combination of cryptographic sortition, Verifiable Random Functions (VRFs) and an algorithmic reputation system. When VRFs are combined with a proper reputation system, the eligibility of each peer can be defined by its previous actions; the better it behaves, the more likely it will be to become eligible (and thus, rewarded). We discuss the properties that such a system can achieve and the reasons why it can be ideal for Decentralized Oracle

Networks.

SCALING ETHEREUM 1.X WITH WASM PRECOMPILES - TALK

Guillaume Ballet

__

In this talk, I will present how WASM precompiles can be leveraged to solve a lot of the scalability issues afflicting Ethereum 1.x. It will expand on my Devcon talk https://www.youtube.com/watch?v=ez4W9-byCnM __ by detailing a Dapp development paradigm that alleviates the burden of eth 1 clients, and paves the way for Eth2. HANDS ON WITH RAIDEN AND THE RAIDEN LIGHT CLIENT - WORKSHOP Jacob Czepluch & Kelsos Paparas

__

In this workshop, we’ll provide you with our latest tools to make Raiden’s usage an easy and fun experience for users/developers: - We will give you a brief overview of how Raiden works and provide you with everything needed to get started quickly. -We’ll guide you through the resources of the new developer portal. - Open channels and send payments with Raiden using mobile phone or

browser only

- Receive payments by getting your own full Raiden node with just a

few clicks.

The workshop will not only be relevant for projects planning on integrating their Dapps with Raiden, but also to any Ethereum developer looking to learn and experience more about Ethereum scaling possibilities via payment channel networks. OPTIMISTIC VIRTUAL MACHINE: FULL ETHEREUM SMART CONTRACTS WITH OPTIMISTIC ROLLUP - TALK

Karl Floersch

__

RUNNING EVM ON SIDECHAINS: FIVE INNOVATIONS - TALK

Konstantin Kladko

__

EVM Sidechains are decentralized ETH-compatible blockchains that can be used by DApps to speed up computation and transactions. Since sidechains are faster and cheaper than the ETH mainnet, sidechains can serve as a foundation for decentralized cloud. I am going to review five sidechain innovations that SKALE sidechains implement: storage, asynchronous Proof-of-Stake consensus, ETH-compatibility, interchain messaging/money transfer, virtual chains and decentralized linearly

scaleable network

FUEL - A TRUSTLESS SCALABLE SIDECHAIN - TALK

John Adler

__

Fuel is a groundbreaking blockchain based technology focused on Visa-level high-throughput, low-latency, low-cost, trustless, non-custodial, no-chargeback digital currency transactions. By using a new transaction compression technique we (Fuel Labs) discovered “optimistic rollups”. In our talk we will present the technical specifics of Fuel, optimistic rollups and what the future of layer-2 holds for Ethereum and beyond. STATELESS ETHEREUM - TALK

Piper Merriam

__

I'll be sharing the latest research, current progress, and general roadmap from the Ethereum 1.x research into stateless clients. This is a cross team/organization effort to address scalability issues with the mainnet Ethereum network while fostering greater client diversity and paving the way for the migration of Eth1.x into Eth2.0. SCALING STORAGE WITH FOUNTAIN CODES - TALK

Silur

__

We review SeF, and see how fountain codes can achieve major storage savings even with byzantine nodes in mind EVM BYTECODE MERKLIZATION - TALK

Sina Mahmoodi

__

To reduce block witness sizes for a stateless Eth1.x, we analyze a change in which contract code is broken into chunks and a Merkle tree is generated from it. With every stateless block, instead of sending the whole code, we will only send the touched code chunks along with validity proofs. Early data suggests this could reduce the total amount of code sent in a block by 40-60%. OPTIMISTIC VS ZK ROLLUP - TALK

Vaibhav Chellani

__

Having worked on both optimistic(https://github.com/vaibhavchellani/BOPR-contracts __

) and

zkRollups(https://github.com/v…i/RollupNC_tutorial __

) I want to

bring to attention to the community the various pros and cons of these approaches and help them innovate on these constructions, I will talk about different things like withdrawing times, censorship resistance,

etc.

CRASH COURSE IN POLYNOMIAL COMMITMENTS - TALK

Justin Drake

__

Polynomial commitments are the key cryptographic building block for universal SNARKs. We will give an overview of the different types of polynomial commitments, how they are built, and how polynomial commitments can be used to build SNARKs. TO BE ANNOUNCED - TALK

Adrian Brink

__

REMOVING STATE FROM ETHEREUM LAYER 1 TO ENABLE RICH DAPPS LIKE PEPO -

TALK

Benjamin Bollen

__

Rich content dApps require more statefulness than Ethereum1 can provide, prunable and at lower price points. Such state benefits both content and smart contract wallets for user experience. 'Mosaic' introduces (on Ethereum1) a second layer proof-of-stake consensus to asynchronously update injected state tries which can finalise state transitions in parallel to the main chain. We discuss the architecture, data availability, validator token incentives and the upcoming testnet generations. OFF-THE-CHAIN TRANSACTIONS: UNDERSTANDING THE LAYER 2 LANDSCAPE - TALK

Guillaume Felley

__

This presentation tackles the summarization of knowledge paper: Off-the-chain transactions (https://eprint.iacr.org/2019/360.pdf __ ), a joint work among several leading university researchers that aims at laying the foundation to better study and compare off-chain scalability solutions. Most of us might have heard of Payment Channels, Plasma, State Channel, NOCUST, Side-chain, Commit-chain, Rollup, and others. The many constructions, names, and notations about off-chain constructions have unfortunately brought a lot of confusion to the community. It is difficult to capture the different trade-offs taken by each solution. Therefore, there is a need to better explain and define the high-level properties of each of these solutions. BUILDING EFFECTIVE TRUSTLESS NETWORKS ON ETHEREUM - TALK

Chadwick Strange

__

This talk will provide an overview of methods used to orchestrate PoS trustless networks by leveraging security models provided by Ethereum. In particular, the talk will demonstrate SKALE Manager, a set of Ethereum smart contracts that facilitate SKALE network operations and security, including SKALE chain creation, delegation and validator registration, and distributed key generation for BLS threshold

signatures.

Security

__

THE NUTS, BOLTS AND IMPOSSIBILITY OF TRUSTLESS CROSS-CHAIN COMMUNICATION - TALK

Alexei Zamyatin

__

With the increasing number of blockchains, differing in design and purpose, it is unlikely that there shall emerge "one chain to rule them all". As such, cross-chain communication has become as a major challenge in blockchain research - fundamental as it is to cryptocurrency exchanges, sharding, bootstrapping and extension of

blockchains.

We overview and show why cross-chain communication requires a trusted third party (same as the Fair Exchange problem!), and present ways around this theoretic problem: leverage incentives, the principles which made Bitcoin work in practice. Collateralized intermediaries combined with state verification (SPV) or validation (NIZKP and fraud proofs) allow to prevent financial damage to users. See our paper for more: https://eprint.iacr.org/2019/1128.pdf __ FUZZING THE SOLIDITY COMPILER - TALK

Bhargava Shastry

__

"Since the Solidity programming language does not have a formal specification, testing the compiler implementation is an important way to obtain assurance about the correctness of code generated by the

compiler.

The approach adopted by us is to define a grammar for the Solidity programming language and automatically generate inputs based on this grammar. Grammar based fuzzing ensures that generated programs are successfully parsed by the front-end parser. We make use of libProtobuf and libProtobufMutator for defining the grammar and performing grammar-based mutations, and libFuzzer as the underlying

fuzzing engine."

PREVENTING DISASTER: ADVANCES IN SMART CONTRACT VULNERABILITY

DETECTION - TALK

Bernhard Mueller

__

What do the DAO, Parity MultiSig wallet and Beautychain have in common? 1. All three were hacked with disastrous consequences, 2. In each case, the bugs could have easily been spotted in advance using automated analysis techniques. In this talk, we'll investigate the above exploits in depth and show how to use a combination of multi-transactional symbolic execution, taint analysis and greybox fuzzing to detect similar bugs with high accuracy and a low false positive rate. We'll also introduce optimization tricks that enable fast detection of "deep" vulnerabilities - exploit conditions that are triggered over a longer sequence of highly specific transactions. Finally, we'll show how developers can apply these security analysis methods to their own contracts using MythX and Mythril. HOW WE THINK ABOUT STORING CRYPTO IS BROKEN - TALK

Cameron Robertson

__

The original sin of cryptocurrency is not transaction speed, poor anonymity, volatility or a high Gini coefficient -- it's a digital format which is confusing to use, easily delegated to centralized exchanges and, most importantly, reliant on multiple layers of software and hardware trust. What if instead Bitcoin and Ethereum were like cash, a physical format that billions of people are intimately familiar with? To achieve a viable physical cryptocurrency, however, we need radically different hardware with cryptographically-secured guarantees of their face value and uniqueness anchored in silicon. WEB APPS VS SMART CONTRACTS: TOOLS, VULNS AND STANDARDS. INSTRODUCTION

OF SCSVS. - TALK

Damian Rusinek

__

I want to focus on the whole process of security testing and present it by analogies to the web applications which are quite well-known. I am going to cover the whole SDLC and show the similarities and differences in the arsenal of vulnerabilities, security tools and standards between the smart contracts and web applications on each

step.

I think that, even though there exist a lot of great security projects for smart contracts, we do not have single, widely accepted security standard (such as ASVS in web apps world). That is why I am going to introduce SCSVS (Smart Contract Security Verification Standard), a open-source 13-part checklist created to standardize the security of smart contracts for developers, architects, security reviewers and

vendors.

SECURING SMART CONTRACTS WITH CRYTIC - TALK

Dan Guido

__

This talk will present Crytic (crytic.io), a GitHub App that continuously assures Ethereum smart contracts are safe and functional. It reports build status on every commit and runs a suite of security analyses so you get immediate security feedback. Crytic is built on the code analyzers from Trail of Bits. It runs the Slither static analyzer to detect the most common smart contract vulnerabilities, checks custom security properties with the Echidna fuzzer, and reviews the safety of upgradeable contracts. Crytic also includes visualization tools that make it easy for developers and users alike to understand smart contracts. Attendees will learn how the underlying tools in Crytic work, how to use Crytic to secure their contracts, and how to integrate its safety checks into development. ETHER WARS EXPLOITS COUNTER EXPLOITS AND HONEYPOTS - TALK

Daniel Luca

__

In this talk I will introduce Karl, an Ethereum blockchain monitor and Theo an exploit framework for Ethereum; both open source. The game-theoretic consequences of having these kinds of tools and honeypots on the network is examined. What if multiple bots compete for exploiting the same contracts? What about honeypots that counter-exploit bots? Is it possible to cheat honeypots? Can you build un-cheatable honeypots? BLOCKCHAIN SECURITY 101 FOR THE VC TRACK - TALK Gonçalo Sá & Brianna Montgomery

__

20 min talk on blockchain security 101, the importance of looking for companies (and or providing funding to companies) to go through full security audits and work with notable security firms, before it's too late (DAO Hack, Parity Hack, etc). & how to avoid these pitfalls and red flags in development lifecycle THE CASE AGAINST USING TEES IN YOUR CRYPTO PROJECT - TALK

Gorka Irazoqui

__

TEEs are isolated units of hardware that ensure code is executed as expected, without the risk of a malicious OS tampering with - or snooping on - the data. As such, some argue they are vital when dealing with confidential data and/or generating hardware-based random

numbers.

In this talk we will explain how the aforementioned assumption is only true when we ignore a wide range of hardware attacks. We will present how side channel and transient execution attacks nullify this assumption, by extracting information operated by enclaves. We will also discuss specific vulnerabilities faced by various TEEs, and note that some of them remain unpatched today. We will conclude by explaining the implications that these attacks might have on current well-known crypto projects in the community. SHARDED SECURITY MODEL OF POLKADOT - TALK

Joe Petrowski

__

How Polkadot provides security, validity, and availability with as low as 10 validators per shard. SECURELY CONNECTING SMART CONTRACTS TO OFF-CHAIN DATA AND EVENTS -

TALK

Johann Eid

__

For smart contracts to achieve mass adoption, they need the ability to securely connect to external off-chain data and existing non-blockchain systems. The reliability with which smart contracts connect to key external systems determines their overall security. This critical security factor determines whether smart contracts will be used to secure the many forms of value beyond tokenization, such as prediction market outcomes, insurance payouts, trade finance, and

more.

In this talk, we’ll examine what makes a secure oracle mechanism reliable enough to be trusted by smart contracts for external data delivery, access web APIs, and off-chain payments. MUTATION TESTING FOR SMART CONTRACTS - TALK

Joran Honig

__

In september I published some research on mutation testing for smart contracts. With this paper I also released an open source mutation

testing tool:

https://github.com/JoranHonig/vertigo __ Which has seen a few improvements since it's initial release (and probably will see a few more before EthCC) In this talk I would like to discuss some of the theory of mutation

testing.

As well as some of the more technical and practical challenges and aspects of mutation testing when applied to smart contracts. https://medium.com/s…esting-d6512dc702b0 __ ^ this is an article I wrote on medium about mutation testing. After the talk my aim is that people will be able to apply mutation testing in their development workflow to keep their smart contracts

safe.

REVERSING EWASM CONTRACT 101 - WORKSHOP

Patrick Ventuzelo

__

In this workshop, I will first introduce WebAssembly concepts and eWasm opcodes/instructions. Secondly, I will show how to create eWasm smart contract and expose different techniques/tools to perform WebAssembly module closed-source analysis. Finally, we will hands-on with basic examples and challenges (crackmes) to apply reverse engineering of those contracts and understand the logic. ETHEREUM FLAVORED PACKAGES - TALK

Philipp Langhans

__

Package signing works and is a great tool every developer should know! However, when package/code signing is not mandatory there is no incentive to go this "extra mile" which opens large attack surfaces and creates vulnerable software systems. In this talk we will present "Ethpkg" - a package manager with built-in ECDSA capabilities. We will demonstrate how the same signature schemes that power the Ethereum network can be used to sign arbitrary packages and containers for large amounts of heterogeneous data such as blockchain state, software code and metadata. We will discuss how cryptoeconomic principles are used to incentivize this extra layer of security and how signed packages create zero-config donation systems and help enable continuous software funding for open source. ERC20 MISBEHAVIORS - TALK

Sergii Kravchenko

__

ERC20 are the most popular tokens designed and used solely on the Ethereum platform but they do not come without limitations or misbehaviors. During this talk, a security auditor will discuss the ends and outs of ERC20 tokens and what to look out for when using

them.

TRANSPARENT DISHONESTY: FRONT-RUNNING ATTACKS ON BLOCKCHAIN - TALK

Shayan Eskandari

__

This talk will be based on a published paper on the subject, here's the abstract of the paper: We consider front-running to be a course of action where an entity benefits from prior access to privileged market information about upcoming transactions and trades. Front-running has been an issue in financial instrument markets since the 1970s. With the advent of the blockchain technology, front-running has resurfaced in new forms we explore here, instigated by blockchains decentralized and transparent nature. In this paper, we draw from a scattered body of knowledge and instances of front-running across the top 25 most active decentral applications (DApps) deployed on Ethereum blockchain. Finally, we map the proposed solutions to front-running into useful categories. PERPETUAL POWERS OF TAU ON SGX: A COMMUNITY ZK-SNARKS TRUSTED SETUP IN

TEE - TALK

Eduardo Antuña Diez

__

The Ethereum community has recently launched a multi-party trusted setup called Perpetual Powers of Tau Ceremony, based on zk-SNARKs. zk-Snark trusted setups generate “toxic waste” - data that could allow an attacker to fake proofs - and the Perpetual Powers of Tau Ceremony attempts to mitigate this by allowing participants to perform a trusted MPC setup. If just one of the participants has been honest and destroyed the toxic waste, the setup can be considered secure. But… what if the trusted setup could be generated inside a Trusted Enclave where not even the agent generating the proof could have access to? That would enhance the security of the ceremony by orders

of magnitude

BROKEN METRE: ATTACKING RESOURCE METERING IN EVM - TALK

Daniel Perez

__

We present a new type of DoS attack we call Resource Exhaustion Attack, which uses imperfections of the EVM gas pricing to generate low-throughput contracts. Using this method, we show that we are able to generate contracts with a throughput on average 50 times slower than typical contracts. We show that all major Ethereum clients are currently vulnerable. Such malicious contracts can be used to prevent nodes with lower hardware capacity from participating in the network, thereby artificially reducing the level of decentralization the network can deliver. IS IT STILL IMMUTABLE IN THE CONTEXT ON CREATE2 - TALK Jaye Harrill, Martinet Lee

__

This talk speaks about the nature of immutability in the context of the new EVM opcode CREATE2, introduced in the constantinople update. This opcode opens up a number of options affecting the lifecycle of a smart contract. It also open new techniques for ensuring their security. However it changes the scope of immutability as we currently understand it, especially at the user app layer.

Web3

__

TOWARDS PEER-TO-PEER ALTERNATIVES FOR CODE COLLABORATION - TALK

Abbey Titcomb

__

Radicle is a peer-to-peer network for code collaboration. It's a decentralized collaboration environment that’s designed to be offline-first, peer-to-peer, cryptographically secure, programmable, and interoperable & open. This talk will walk the audience through the Radicle protocol and touch on the design approach of the Radicle stack. It will outline the project's next steps and explore our blockchain components & integrations. Radicle (http://radicle.xyz/ __ ) is a free and open source project supported by Monadic (https://monadic.xyz/ __ ). MAKING WEB3 REAL WITH BRAVE - TALK

Ben Livshits

__

I will talk about some major strides we have been making to bring Web3 to the masses. Brave browser has over 8M regular users now, with various crypto functionality within it being used increasingly more. I will talk about some use cases which provide a deep connection between the existing Web2 infrastructure and Web3. BLOCKCHAIN NAME SERVICE - TALK

Christopher Shen

__

How Blockchain Name Service is improving the user experience of blockchain technology. FROM WHISPER TO WAKU - TALK Dean Eigenman & Oskar Thoren

__

THE ETHEREUM COMMUNITY IN 2020 - TALK

Evan Van Ness

__

ADD CONFIDENTIAL USER TO USER COMMUNICATION IN YOUR DAPP - WORKSHOP

Joel Oed

__

Most dapps are way to focused on only smart contract interaction. In this workshop you will learn how to use 3box tools to make your dapp more engaging and interactive by allowing your users to communicate

confidentially.

MONETIZING THROUGH MEMBERSHIP, RATHER THAN ATTENTION - TALK

Julien Genestoux

__

It's 2020 and we're still using attention as the core metric for monetization online. This is now obviously a mistake. In this presentation I'll be showing that we're moving toward membership for monetization, why this is good and how ethereum can make this better! DEVELOP FASTER AND ACQUIRE MORE USERS USING UNIVERSAL LOGINS -

WORKSHOP

Marek Kirejczyk

__

How to quickly use the Universal Login SDK to build apps with better retention rate, so you don't need to worry about onboarding and can focus on building the killer app you want to build DECENTRALIZED APPLICATION AND DEVICES WITH ALEPH.IM AND ETHEREUM -

TALK

Moshe Malawach

__

Our modern web is made of silos, be it for social network, cloud services, IoT devices provider. We will explain how we are building a decentralized web infrastructure that can withstand huge loads with the aleph.im project and how it can be used to break those silos. You can play with a decentralized cloud storage dApp yourself there: https://my-beta.aleph.im __ (do it! it takes a few minutes only) Our network is currently compatible and connected to NULS, Ethereum and Binance Chain. Other chains are being implemented. TYPE-SAFE SMART CONTRACT INTERACTIONS FROM RUST - WORKSHOP Nicholas Rodrigues Lordello

__

The How and Why of using Rust metaprogramming features to generate type-safe bindings to smart contracts and facilitate development of

dApps.

ETHERS.JS - A COMPACT, SIMPLE AND COMPLETE ETHEREUM LIBRARY - TALK

Richard Moore

__

An overview of ethers.js. MONETIZING BROWSING DATA WITH SWASH - TALK

Shiv Malik

__

Swash is the world's first data union. Built by developers based out of Turkey, the Swash browser extension makes it possible for individuals to aggregate their search, Facebook Twitter and Amazon data in a way that respects privacy, and then enables users to have their data sold on a decentralized data marketplace. Several other types of data unions (including mobile apps) are being built on the Streamr, a platform which provides the raw infrastructure needed for individuals to collectively monetize their data. So what does this innovation mean for the future of data and privacy? The interests of data dignity, an open society, and financial equity, are best balanced through individuals claiming property rights over their data as part of a professionally run collective. COMMUNITY BUILDING AND CRYPTO INCENTIVES - WORKSHOP

Simona Pop

__

Practical examples of how education and coordinated community engagement can turbo charge adoption AMPLIFYING THE WEB3 MOVEMENT - TALK

Julien Béranger

__

Web3 as a movement is about building a better Internet. We want it to be open source, verifiable, (truly) decentralized and respectful of users' privacy. The Ethereum community is playing a key role at solving these issues, but a vast majority of people don't seem interested in the crazy apps, services and infrastructure projects we're building. How can we get sexy in the eyes of people outside of the crypto space? In this talk, I will share some thoughts about 'Web3 marketing' best practices, give a few tips on how to set a relevant comms strategy (https://strat.cc __ ), and make a special announcement about a DAO we're implementing for a major institutional partner. ON-CHAIN UPGRADES FOR INCREMENTAL EVOLUTION OF PUBLIC DECENTRALISED

BLOCKCHAINS - TALK

Adrian Brink

__

The talk focuses on the future evolution of public blockchains. Currently most blockchains are launched and then their design/economics/... are set in stone. However it is highly unlikely that the early versions of blockchains already have hit product/market fit. Newer blockchains such as Tezos, Polkadot and to some extent Cosmos have build-in mechanism to decide upon and implement upgrades. However a large remaining question is whether governance systems are willing to move fast enough and if they are willing to pay for the development to happen. This talk will explore everything around incremental evolution of public blockchains in order to get to the point where they solve real world issues. THE ETHEREUM FOUNDATION'S ECOSYSTEM SUPPORT PROGRAM: A LOOK AT HOW IT WORKS TO SERVE THE ETHEREUM COMMUNITY - TALK

Ken Ng

__

The Ethereum Foundation's grants program was re-christened 'Ecosystem Support' exactly one year ago. Ken will be digging into the who, what, and how of Ecosystem Support, discussing the types of support we've given in the past year since our launch, and pulling some example cases from our past grantees. We'll end with a quick Q&A session. PAN EUROPEAN AND GLOBAL PROBLEM OF INTIMIDATION AND OPPRESSION - TALK

John Shipton

__

Pan European and Global problem of intimidation and oppression of journalists, publication and publishers by judicial abduction through extradition processes And collapse of human rights treaty obligations

French Track

__

INTRODUCTION :LA BLOCKCHAIN AUJOURD'HUI ET SES PERSPECTIVES POUR

DEMAIN - TALK

Simon Polrot

__

La blockchain et les actifs numériques ne sont plus des sujets entièrement vierges, mais ils ont encore leur part de mystère. L’évolution rapide des technologies et des usages rend une vision d’ensemble difficile. Nous avons souhaité, dans le cadre de cette conférence réunissant les cas d’usages les plus innovants de l’écosystème, apporter un éclairage global sur cette industrie et son avenir, à destination du public francophone. Dans cette série d’interventions exclusivement en français, nous explorerons les futurs développements de l’industrie des crypto-actifs au travers de ses trois thèmes les plus porteurs aujourd’hui : la finance décentralisée, les objets numériques individualisés (non-fongibles) et les organisations collectives sur

blockchain (DAOs).

Au travers, d’une part, une exploration synthétique de ces cas d’usage et, d’autre part, d’une introduction et mise en perspective, nous explorerons l’avenir de cette industrie naissante et notamment de sa place et de son rôle en France et en Europe. Cette série d’interventions s’adresse à un large public (utilisateur, investisseur, politique, développeur ou simple curieux) et elle pourra utilement servir d'introduction aux nombreuses interventions de la conférence EthCC. LA FINANCE DÉCENTRALISÉE : VERS UNE NOUVELLE FINANCE PLUS

TRANSPARENTE - TALK

Brice Berdah, Mounir Benchelmed, Arthur Micoulet

__

La finance décentralisée (DeFi – Decentralised Finance) a émergé au cours des deux dernières années grâce aux nombreux développements réalisés sur la blockchain Ethereum. Des entrepreneurs du monde entier créent un nouveau système financier, en s’appuyant sur les possibilités offertes par les blockchains. Transparence, ouverture, traçabilité et fiabilité sont les principes de base de cette nouvelle finance. Aujourd’hui, des individus du monde entier s’échangent des tokens, se prêtent de l’argent sans avoir besoin d’intermédiaires ou encore s’échangent des actifs représentant des biens tangibles (monnaie fiduciaire, or, propriétés, parts dans une société, etc.). ORGANISATION COLLECTIVE SUR BLOCKCHAIN : QUE FAIRE AVEC UNE DAO EN

2020 ? - TALK

Philippe Honigman, Jenna Zenk, Alex Masmejean, Louis Giraux, Kris

Decoodt

__

Tour d’horizon des actifs uniques ou tokens non-fongibles (NFT). A la différence d’un bitcoin où d’un ether, qui sont interchangeables, les NFT sont des actifs uniques. Seront exposés les tenants et les aboutissants de ce type de tokens dont les qualités permettent de créer une forme d’unicité digitale et par conséquent, une forme de rareté. Au programme: un état des lieux des cas d’usages potentiels et concrets à travers des secteurs tels que le Gaming, le Luxe, la Mode et la Supply Chain et enfin des potentielles limitations et développements futurs. LE POTENTIEL DES ACTIFS UNIQUES OU TOKENS NON-FONGIBLES (NFT) - TALK Nathan Sexer, Nicolas Julia, Pierre-Nicolas Hurstel, Nicolas Pouard

__

blockchain (DAOs).

Au travers, d’une part, une exploration synthétique de ces cas d’usage et, d’autre part, d’une introduction et mise en perspective, nous explorerons l’avenir de cette industrie naissante et notamment de sa place et de son rôle en France et en Europe. Cette série d’interventions s’adresse à un large public (utilisateur, investisseur, politique, développeur ou simple curieux) et elle pourra utilement servir d'introduction aux nombreuses interventions de la conférence EthCC. CONCLUSION : CONCLUSION : LA FRANCE ET LA BLOCKCHAIN - TALK Simon Polrot, Alexandre Statchenko, William O’Rorke

__

Sharing and transmitting knowledge At Ethereum France, we believe that sharing and transmitting knowledge is the most efficient way to develop a positive and fertile ecosystem. For this reason, EthCC covers many different subjects and addresses different levels of comprehension of the blockchain technology, through conferences and workshops. by the community, for the community EthCC is first and foremost an event by the community, for the community. Being non-profit, we keep the prices as low as possible. We are transparent on our budget and any extra profit will be redistributed in the ecosystem. Volunteering and Students We wish to welcome for free as many students as possible! If you are a student in France, you can have a free access to EthCC by becoming a volunteer!.Sorry guys! We have already all volunteers registered and can't accept anymore. If you are an international student, you can apply to get free tickets through this form!

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