Open in a hex editor search for name, might say team doge or some other thing that will be simple and if you are not on linux getting python and a few plugins working just to figure out what coin is the wallet.dat is a pain. Although if you need to extract a key or try to fix it you will want python and some other tools.
There is a hex editor plugin for ...
From the point of view of an application developer, it is for now much easier to use layer 1 features.
This is due to being able to externalize your burden on the network.
1. Hey nodes, will you do my job?
Blocks are expensive to produce
You don't need to have much DOS concerns in your application if you are only reacting to onchain payments. But what ...