JohannaWeb

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  1. We shipped the first native Java SDK for AT Protocol. No wrappers. No JavaScript dependencies. Hand-rolled ES256K verification using BouncyCastle with multicodec varint decoding and base58btc multibase. The stack: Java…

  2. Hi HN — I've been working on Falcon, a developer collaboration platform built around portable identity instead of server ownership. The core idea: communities shouldn't disappear when a platform, server, or admin does.…

  3. I’m building a chat-first community app that uses Bluesky’s AT Protocol for identity. Current architecture: - Electron client - Spring Boot backend (monolith) - REST for servers/channels - Planning WebSocket-based…