"This post will focus more directly on the technical aspects of one specific sub-problem: how to make it easier to read L1 from L2, L2 from L1, or an L2 from another L2. Solving this problem is crucial for implementing an asset / keystore separation architecture, but it also has valuable use cases in other areas, most notably optimizing reliable cross-L2 calls, including use cases like moving assets between L1 and L2s."