Nearly a year into Ethereum’s “zero-knowledge” arms race, the founders Scroll_ZKP, a zero-knowledge Ethereum Virtual Machine, tell skesslr it’s a competition they’re more than happy to lose. They have bigger plans. More from ProjectsToWatch2023:
The most recent crypto boom pushed the Ethereum blockchain to its limits – with an unprecedented inflow of new users slowing down the network and pushing its traffic-based transaction fees sky high. This network congestion – and the accompanying fees and speeds – made Ethereum unworkable for some users, spurring a wide field of faster, cheaper blockchains bidding for Ethereum’s throne as the main hub for decentralized finance, non-fungible tokens and blockchain research.
ZkEVMs are a kind of Ethereum rollup network – a layer 2 companion blockchain that records transactions to the base layer 1 Ethereum chain, but offers lower fees and faster speeds to users. In general, rollups work by bundling up big groups of transactions and then writing them to Ethereum in one fell swoop – drastically reducing the fees that would be required to make those transactions on Ethereum one at a time.
ZkEVMs have been a long time coming. Early rollups that used ZK proofs were all application specific, meaning they were restricted to specific crypto use-cases . Newer zkEVMs such as Scroll aim for compatibility with any Ethereum app – meaning NFT marketplaces, decentralized lending platforms, and blockchain-based gaming apps should all be able to port their code over to these cheaper rollup networks.
“People still build only application-specific zk-rollups, like a DEX,” he said, referring to a decentralized exchange. “People think general purpose stuff is just so hard to build. And it’s very, very, very low efficiency.” But two years ago there were some breakthroughs in cryptography and also hardware acceleration, he added, that are now allowing the technology to zip ahead.
“If you are bytecode level equivalent, you can be seamlessly compatible with all those toolings without any modification,” he said, referring to the Ethereum ecosystem’s “robust” developer toolkit landscape. The lengths that Scroll is going to in its quest to replicate the Ethereum experience are borderline severe. Every detail of the tooling stack is reused, Zhang said.To make these matters harder it's all being done in the open. Every Scroll pull request, comment, line of code and so forth is playing out in real time on its Github repository. That means anyone with an internet connection – anywhere in the world – can track the progress of Scroll’s codebase.
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