Utility to generate the seeds.txt list that is compiled into the client (see src/chainparamsseeds.h and other utilities in contrib/seeds).
The seeds compiled into the release are created from the current protx list, like this:
raptoreum-cli protx list valid 1 1185193 > protx_list.json
python3 makeseeds.py < protx_list.json > nodes_main.txt
python3 generate-seeds.py . > ../../src/chainparamsseeds.h
Make sure to use a recent block height in the "protx list" call. After updating, create a PR and specify which block height you used so that reviewers can re-run the same commands and verify that the list is as expected.
Ubuntu:
sudo apt-get install python3-pip
pip3 install dnspython