Building a Transparent KeyserverToday, we are going to build a keyserver to lookup age public keys. That part is boring. What’s interesting is that we’ll apply the same transparency log technology as the Go Checksum Database to keep the keyserver operator honest and unable to surre...Dec 19, 2025·21 min read
Transparency.dev Summit 2025 CFP is now open!We are excited to announce that the Call for Papers/Proposals/Presentations for the Transparency.dev Summit 2025 is now open! Earlier this year we announced the second annual Transparency.dev Summit, to be hosted by Glasklar Teknik on 20th-22nd Octob...Jun 2, 2025·1 min read
Hardening Witnesses with Confidential ComputingWitnesses verify that the verifiable logs they are observing maintain their append-only property and countersign verified checkpoints. Clients can use these countersigned checkpoints to protect themselves against split-views, an attack where a log pr...Apr 30, 2025·4 min read
Merklemap: Scaling Certificate Transparency with 100B+ Rows of DataA Case Study in Scaling for High Volume CT DataApr 23, 2025·7 min read
Announcing Transparency.dev Summit 2025We’re excited to announce the 2nd annual Transparency.dev Summit - a 2.5 day gathering of implementers, operators, and clients of real-world transparency systems. 🗓 Save the Date: October 20–22, 2025 📍 Gothenburg, Sweden 🏠 Hosted by Glasklar Tekni...Apr 10, 2025·3 min read
Certificate Transparency in Firefox: A Big Step for Web SecurityCertificate Transparency (CT) has been one of the biggest advancements in web security, keeping users safe from threats such as certificate fraud and man-in-the-middle attacks. While CT has been around for over 11 years, enforcement has varied across...Feb 24, 2025·3 min read
I Built a New Certificate Transparency Log in 2024 - Here’s What I LearnedCertificate transparency (CT) is such a useful research tool and I’d been wanting to learn more about it for a while. After Sunlight was announced last year, I decided the best way to learn was to write a CT log, and set off on quite the adventure. T...Jan 23, 2025·4 min read
