Electrum provides RPC commands like name_update and name_list, which are similar to the ones in Xaya Core. They are however not exactly the same, e.g. name_update just creates a transaction that needs to be broadcast separately.

To make this transparent to game frontends, we should add a compatibility server: Optionally, run a second RPC server on a second port, and provide the exact same interface as Xaya Core with them.

We should add back in checkpoints for the Xaya chain. This is non-trivial, though, as we need to store more data with them to support Xaya's continuous difficulty update. So probably each checkpoint should store the block hash, the chainwork up to that point, and the algo, timestamp and bits of the last 24 blocks for each algorithm.

Currently, the code to compute Neoscrypt PoW hashes is based on the xaya-hash binary (as we do it in Xaya Core regtests). This works for early tests, but is both not very portable nor efficient. Thus, we should replace it by a proper Neoscrypt module in Python.

There seems to be a module available (https://github.com/ahmedbodi/neoscrypt_python), but that is very outdated. And even when adapted to Python3, it still didn't work for me so far.

We need to rebrand Electrum-CHI from Namecoin to Xaya. So far, only the "necessary" things have been changed (e.g. like the data folder path), but not the "cosmetic" ones.

We should support the burn option for the name_register and name_update compatibility RPCs, matching xaya/xaya#103.