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Polygon Emerges as Suitor for Celo’s New Layer-2 Blockchain, Competing With OP Stack

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Celo, which is ditching its standalone blockchain in favor of a new “layer-2” network atop Ethereum, had originally signaled plans to rely on Optimism’s OP Stack, a similar customizable kit to Polygon’s but using Optimism’s “optimistic” technology.

Ethereum Blockchain Launches ‘Holesky’ Test Network, on First Anniversary of Historic ‘Merge’

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The debut of the testing system – designed to be twice as big as the main network so developers can simulate massive scaling, comes a year after Ethereum completed its historic “Merge” shift to a “proof-of-stake” model from the original “proof-of-work” setup that Bitcoin uses.