👨🏾‍💻 Dev corner: what is a rollup?

Ethereum is secure but busy. A rollup does the work off to the side, bundles hundreds of transactions together, then posts a compressed summary back to Ethereum.

Result: cheaper, faster transactions that still lean on Ethereum's security.

The OP Stack is a toolkit for building these. That's why chains like Immutable are moving to it.

$ETH $OP