This form of gradually gaining trust to learn ones real identity feels like a part of real life that is missing online. So many more of my interactions in real life are some form of anonymous or vague idea of who someone is. Those interactions don't come with a dossier of their interactions with others for me to browse or judge them on. This feels closer to that.
It will be very interesting to see how people take to this.
Market data ingest, analysis and resulting order execution is chewing through way more data way faster than any banking transaction system. I have worked on both of them.
If you want more in the weeds but still high level I gave a talk on the main concepts and systems you need to know to code low latency for markets. https://docs.google.com/presentation/d/1HIPJb0XX3JDHEYSrZC8v...