Polygon zkEVM prepares for Ethereum’s Dencun upgrade, eyes major fee reductions with EIP-4844

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The upcoming Dencun upgrade on Ethereum, expected to occur in mid-March, is poised to bring about a big improvement in the form of “proto-danksharding” through EIP-4844.Dencun aims to facilitate the inclusion of off-chain ‘data blobs’ in Ethereum transactions, a move that is designed to allow for the incorporation of additional data without compromising block processing times. This upgrade is viewed as a pivotal development for boosting the scalability of Layer 2 solutions on the network by providing them with expanded data capacity.Polygon developers are keenly anticipating the impact of EIP-4844 on gas fees within the Polygon zkEVM ecosystem, suggesting that the upgrade could lead to improved data availability for Layer 2 solutions in a cost-efficient manner.Polygon is a suite of scaling solutions allowing developers to create decentralized applications with low transaction fees. To enhance scalability of Ethereum-based apps, Polygon employs two scaling techniques: a sidechain named Polygon PoS and a zero-knowledge (ZK) rollup network known as Polygon zkEVM. zkEVM is the one that would particularly benefit from Dencun. Its co-founder and technical lead Jordi Baylina shared insights on the current challenges faced by ZK rollups (such as zkEVM), primarily centered on the cost of data availability. “The main challenge for ZK rollups right now is the cost of data availability,” Baylina stated, underscoring the significance of EIP-4844 in potentially reshaping the capacity and gas fees landscape on Polygon zkEVM.He further predicted a “threefold increase in Ethereum’s total data availability capacity” following the implementation of EIP-4844 within the Dencun upgrade that would tremendously help ZK rollups, including Polygon zkEVM and others like Linea, Scroll, and zkSync. Baylina also provided projections on cost reductions, estimating “a potential cost reduction ranging from 10x to 50x when combining EIP-4844 with data compression,” while also noting that “the actual savings will depend on various factors.”Changes made for EIP-4844 integrationAddressing the technical preparations for the upgrade, Baylina highlighted that while the transition to Dencun might be more straightforward for optimistic rollups (such as Optimism and Arbitrum), the integration of EIP-4844 into Polygon zkEVM, which utilizes ZK rollup technology, requires specific technical modificat...

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