I have written about the payments part of the standard around a year ago. I think it's a good primer for people who want to understand some fundamentals and got

I have written about the payments part of the standard around a year ago. I think it's a good primer for people who want to understand some fundamentals and gotchas of the format. https://evrim.zone/blog/knowledge/iso_20022_pain_001 https://evrim.zone/blog/knowledge/iso_20022_pain_001 For Americans who've never heard of it, FedNow is seemingly using a 'a bespoke flavor of the ISO 20022 specification' (https://news.ycombinator.com/item?id=36805571 https://news.ycombinator.com/item?id=36805571). I think that it's a pretty handy format to be familiar with, and is quite simple to work with too. If the Fed or participating banks decide to open up the system like European banks have done so, it can be handy to get familiar with it for us financial hackers out there!