https://cityofhats.com/changelog/ A dated record of changes to City of Hats research, trust material, decision tools, navigation, and public website content. This is not the mobile or web application release log. en https://cityofhats.com/research/messaging-identity-requirements-2026 coh-website-2026-08-10-1 Mon, 10 Aug 2026 00:00:00 +0000 Research Published a nine-service documentation audit with methodology, uncertainty labels, source links, and downloadable CSV and JSON data. https://cityofhats.com/playbooks coh-website-2026-08-10-2 Mon, 10 Aug 2026 00:00:00 +0000 Guidance Published practical baselines for journalist-source intake, legal deals, executive travel, incident response, clinic intake, and anonymous reporting. https://cityofhats.com/procurement coh-website-2026-08-10-3 Mon, 10 Aug 2026 00:00:00 +0000 Trust Published buyer questions, evidence-status disclosures, and downloadable due-diligence files without inventing customer proof or certification claims. https://cityofhats.com/threat-model-advisor coh-website-2026-08-10-4 Mon, 10 Aug 2026 00:00:00 +0000 Decision tool Added a five-question, browser-only advisor with tailored controls, operational priorities, and explicit limitations in seven languages. https://cityofhats.com/ coh-website-2026-08-10-5 Mon, 10 Aug 2026 00:00:00 +0000 Navigation Replaced the secondary hero CTA with a localized link to the Threat Model Advisor while retaining the security proof section. https://cityofhats.com/security-evidence coh-website-2026-08-09-6 Sun, 09 Aug 2026 00:00:00 +0000 Trust Published the claims registry, architecture and data boundaries, threat limits, audit maturity, responsible disclosure guidance, and security.txt endpoint. https://cityofhats.com/knowledge coh-website-2026-08-09-7 Sun, 09 Aug 2026 00:00:00 +0000 Education Published the Knowledge Center and a sourced guide explaining what end-to-end encryption protects and what remains outside its boundary. https://cityofhats.com/ coh-website-2026-08-08-8 Sat, 08 Aug 2026 00:00:00 +0000 Navigation Reorganized Platform, Solutions, Resources, and Compare navigation with grouped desktop and mobile layouts, keyboard behavior, and seven-language routing. https://cityofhats.com/ coh-website-2026-08-08-9 Sat, 08 Aug 2026 00:00:00 +0000 Design Applied a shared black-and-white design foundation across canonical website pages while preserving meaningful product and status colors.