Because of that ?
https://bitbox.swiss/blog/understanding-silent-payments-part-one/
Discussion
Didn't look at that article. Listened to that episode on a late night ride home from a Meetup.
Interesting, I have to listen to it.
My favorite for bitcoin technically is still nostr:nprofile1qqs8k0mcqd6sw3h524qn5gslszt9am9knmes3uh268dgnnpv3yfwj6qpzamhxue69uhky6t5vdhkjmn9wgh8xmmrd9skctcppemhxue69uhkummn9ekx7mp0qyw8wumn8ghj7mn0wd68yttsw43zuum9d45hxmmv9ejx2a30y7ph8a s https://github.com/jimmysong/programmingbitcoin .
I hope Jimmy will also have soon a part two, which will also include sp1.