Welcome to John Turner's Blog¶

Professional headshot of John Turner, a cybersecurity professional with 15+ years of experience

I build security tools and open source infrastructure. Right now I'm working on trust registries for AI agents, Bitcoin/Nostr tooling, and browser extensions for real-time analysis. By day I lead product security at Bose — by night I write Rust and ship side projects.

This is where I share what I'm building, document lessons learned, and explore the intersection of security, privacy, and practical software engineering.

Featured Project¶

3goodsources — Trust Registry for AI Agents (Rust/MCP): A cryptographically-signed trust registry that helps AI agents identify reliable information sources. Built with Rust and the Model Context Protocol (MCP), it provides provenance tracking and supports multiple registry backends (GitHub, Git, filesystem). When an AI agent needs to know which sources to trust, 3goodsources delivers ranked, verifiable recommendations. Trust infrastructure for the AI agent ecosystem.

Recent Work¶

A quick look at what I'm building and have built — newest first:

3goodsources — Trust registry for AI agents (Rust/MCP)
arbstr — Bitcoin/Nostr LLM arbitrage (Rust)
chat-signal-radar — Live stream chat analysis (Rust+WASM Chrome extension)
dash-decoder — AI-powered dashboard warning light decoder
TrustEdge — Trustable Edge AI (Rust)
... and more projects

Recent Blog Post¶

TrustEdge Goes Professional - GitHub Organization, Live Audio Capture, and Universal Backend System TrustEdge moves to TrustEdge-Labs GitHub organization with live audio capture, Universal Backend system, mutual authentication, format-aware processing, and 93-test comprehensive suite. Published September 5, 2025

Explore my projects, read about my experience, or get in touch.