Quite enteraining and novel world-setting. The "no infodump" approach was initially hard to follow but explanations of what the background was came frequently enough to answer my questions.

Some of these type of books - like the Culture series - suffer from deus ex machina syndrome: one character is so crazily equipped with magical devices that resolution to the story depends on a fantastic escape using far-fetched tech. "Oh look: wings that come out of your body".

Here, though, the author's approach is more one of highly advanced technology that is very unevenly distributed, so one does not know who might possess what. And the mechanics of block-chains and public key encryption were intriguing.