The scalability trilemma states that a blockchain can only have two out the following three properties: decentralization, scalability, and security.

Layer 2 protocols aim to make Ethereum more scalable by not always interacting with the root chain. What are the potential drawbacks of layer 2 solutions? It seems to me that by not creating transactions on the root chain you sacrifice auditability, which might be critical for some applications.


most epic drawback is : data unavailability on layer 1(main chain on ethereum) which leads to another epic drawback which is being unsecure of funds located on child chain

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