Historical retrospective · Layer 2
Base opened a new Ethereum L2 built with the OP Stack
Base launched its public mainnet in 2023 as an Ethereum layer-two network built using Optimism’s OP Stack.
The launch brought a large consumer-facing technology company into the rollup ecosystem while using Ethereum for settlement-related functions.
Base illustrated how distribution and familiar applications could drive L2 adoption alongside protocol engineering.
A branded L2 is not the same as Ethereum mainnet; users should verify chain IDs, bridge routes and withdrawal assumptions.
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