[Node] Cryptographically commit to blocks (L2 tx Batches)

[smartprogrammer93]

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[mskrzypkows]

@smartprogrammer93 How do we commit to the blocks? I understand this committed blocks will be broadcasted to all AVS P2P nodes, and the signature is needed only for this part, right? It's because as we forward byte-encoded tx list to the smart contract or the mev-boost we sign whole the L1 tx not a list of L2 txs.

[mskrzypkows]

Using Alloy, I can create a fake transaction with the hash of the L2 txs list, and sign it with the private key.