I have been programming since high school in the seventies when computers were still very small and expensive. Since internet and version control systems I have been contributing to open source projects which I am interested in.
I have been involved in ARPA2 for serveral years no.
Thanks to DNSSEC and DANE, it is possible to automatically verify email@example.com identities by checking with domain.name servers. The real problem however, is integration with existing protocols, instead of inventing something completely new and perhaps web-only. The purpose of our work on Realm Crossover mechanisms has been to design generic solutions that extend many different application protocols, without changing their protocol specs.