Notes on backend, systems, and protocol work. Some other things too.https://prkpandey.xyz/https://prkpandey.xyz/writes/solana-mental-model/https://prkpandey.xyz/writes/solana-mental-model/The mental model that made Solana click for me: accounts as files, one owner per file, and everything else follows.Fri, 25 Sep 2026 00:00:00 GMThttps://prkpandey.xyz/writes/tor-part-3-building-hop6/https://prkpandey.xyz/writes/tor-part-3-building-hop6/Part 3 of 3: the architecture of a serverless Tor messenger in Rust, from the control port to the wire protocol.Tue, 02 Jun 2026 00:00:00 GMThttps://prkpandey.xyz/writes/tor-part-2-onion-services-rendezvous/https://prkpandey.xyz/writes/tor-part-2-onion-services-rendezvous/Part 2 of 3: how two hidden parties meet without either learning the other's location, and why a .onion address is its own certificate.Mon, 01 Jun 2026 00:00:00 GMThttps://prkpandey.xyz/writes/tor-part-1-onion-routing/https://prkpandey.xyz/writes/tor-part-1-onion-routing/Part 1 of 3: onion routing from first principles, and how it differs from ordinary IP routing.Sun, 31 May 2026 00:00:00 GMT