For Ethereum rollups, dealing with data remains a bottleneck

When it comes to scaling Ethereum, rollups are the name of the game. But as rollups increase transaction throughput, they face a challenge in where to store their data.

The obvious option is on Ethereum itself. Some argue that doing so is even core to the claim that rollups “inherit” Ethereum security. Ethereum’s execution layer nodes store a complete copy of the blockchains ledger and history, allowing clients to independently verify the accuracy of its transaction history.

While great for security and resilience, this comes at the cost of scalability. This is one of the main reasons why the Ethereum mainnet maxes out at around 15 transactions per second (TPS), and can be…

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