devcon 6 / understanding l2 ordering and execution aka everything youve always wanted to know about sequencers but were afraid to ask
Duration: 00:24:16
Speaker: Daniel Zachary Goldman
Type: Talk
Expertise: Advanced
Event: Devcon
Date: Oct 2022
Categories
Building a Layer-2 NFT Bridge
Cross-chain communication is one of the most complex and interesting parts of multi-chain development. In this workshop we’ll build out an NFT bridge from the ground up between Ethereum and Arbitrum covering all you need to know about bridging design and cross chain messaging. You’ll walk out with a set of smart contracts you can use to bridge your mainnet NFT collection along with way more than you ever wanted to know about bridging.
Scalable Blockchains & Asynchronous Programming
Ethereum's Vitalik Buterin presents on scalability and asynchronous programming.
Less Gas, More Fun: Optimising Smart Contracts through Yul
Due to the relative simplicity of the Ethereum Virtual Machine, it is possible to perform heavy analyses in order to optimize bytecode. The jump operations are a main obstacle for this, because they might require a preservation of all basic blocks in the worst case. To overcome this, Solidity's new optimizer operates on an intermediate language called Yul, which is close to EVM bytecode (and also wasm) but abstracts jump operations through real function calls. Each of the many optimizing operations are simple local equivalence transforms whose effects can be inspected at any time and which in combination should be both more reliable and efficient than the classic optimizer.
Raiden Network: Getting to a production ready payment channel network
The Raiden Network is the payment channel network for Ethereum aiming to help scale Ethereum payment and all Dapps that utilize Ethereum for payments and rely on no on-chain side effects of the payments. There will be a small explanation of what is payment channels and a payment channel network, an explanation of the raiden network protocol and a demo of using Raiden (hopefully by then live on the mainnet). We will close with future plans, expansion of the protocol and showcasing potential applications.
Scalabilty with zKSNARKs
Scalabilty with zKSNARKsThis session will introduce iden3’s zkSNARKs implementation and how it will be used at two scenarios: For the trustless relayer implementation at the identity management environment, allowing the identities to perform claims without cost at big scale.And the rollup project for Ethereum scalability, allowing verifiable computation off-chain to increase transaction throughput
ENS Cross Chain Integration Strategy
In general, most cross chain use cases are “asset transfer” for bridges to cross tokens from one chain to another then each application deploys the exact copy from L1 to other chains. However, ENS (Ethereum Name Service) has a set of unique challenges because ENS functions as a “global address book” to resolve addresses on any chains from any wallets. We have received lots of requests from chains and dapp developers about how to integrate ENS into their chain of choice and I am going to explain
Major Trends in the Layer 2 Ecosystem: Where We Are and Likely Upcoming Themes
The Layer 2 space moves at lightning speed. Just as we start to grasp a particular concept or protocol, changes and new ideas flood the ecosystem. It is exciting and fast-paced, but it can be difficult to maintain an accurate birds' eye view of current developments and upcoming themes. This lightning talk will quickly survey the Layer 2 field and make some predictions around what themes we are likely to see in the coming months.
Scroll Pre-Alpha Testnet Upgrade
Why do we need secure scaling? How is Scroll different from existing zkRollups? What can Scroll bring to users and developers? In this 20-minute session, we will introduce the design, principles, and the whole workflow of zkEVM, demonstrate our bytecode-level compatible zkEVM on testnet, and show you how easy it is for developers to deploy smart contracts on it.
Technical Details of the Opcode Compatible zkEVM
I will explain some technical details on how we, at PolygonHermez, built the opcode compatible zkEVM. This will include some design details of specific pieces like the storage, the arithmetic state machine, the keccak circuit, among others. I will also go thru some snippets of the zkASM code that emulates the Ethereum VM. I will include in the talk some performance measures and I will do a live demo of the testnet.
zkEVM Vs EVM: Full Equivalence?
At Polygon-Hermez we have bet for the zero-knowledge EVM to solve Ethereum scalability. We will talk about what is the ZK-EVM and how are we dealing with it at Polygon. We will explain the differences between zkEVM and EVM, Also the main challenges, tricks, tech decisions and differences we had to apply to achieve EVM compatibility will be explained.