Site Architecture, 24-Year Renewal History & Live Verification
Rather than making unverifiable claims, Open Knowledge Inc. demonstrates its engineering philosophy directly through this website (https://ok.st/). Every architectural layer—from Astro Zero-JS static separation and Rust 2024 compile-time verification to FreeBSD OpenZFS and PostgreSQL 19 (db01.ok.st)—is documented here for open inspection.
1. Six Global Web Engineering Practices Implemented on ok.st
Bilingual Architecture & Cultural Clarity (i18n)
11 dedicated English pages (/en/**) and 220+ Japanese pages with explicit HTML lang attributes, reciprocal hreflang links, and zero untranslated script leakage.
WCAG 2.2 Level AA & JIS X 8341-3:2016 Level AA
12.5:1+ contrast ratios, 44x44px minimum interactive tap targets, Reading Comfort Bar, keyboard focus protection, and full Annex JB testing transparency.
Zero-CMS Attack Surface & RFC 9116 Security
Astro Zero-JS Static Site Generation eliminating server-side PHP/CMS RCE vectors, paired with strict CSP, HSTS Preload, and RFC 9116 /.well-known/security.txt.
Lighthouse 100 & W3C Web Sustainability (Green IT)
Sub-second static delivery using ultra-lightweight semantic SVG diagrams, achieving < 0.02g CO2 per page view in alignment with W3C Web Sustainability Guidelines 1.0.
AI-Native Discovery (/llms.txt & Schema.org @graph)
Machine-readable JSON-LD knowledge graphs on every page plus /llms.txt and /llms-full.txt indexes for accurate citation by generative AI and answer engines.
Cookieless Privacy & Live Verification
Zero third-party tracking cookies, zero ad-network scripts, and 100% browser-local diagnostic tools compliant with GDPR, CCPA, and Japan's APPI.
16th DX Certification™ (Professional Level 2026) — Professional Level Certified (Cert ID: I0132899-260315)
Professional Level Certified across IT Technology & Business Innovation Trends
10th DX Business Certification™ (Professional Level 2026) — Professional Level Certified (Cert ID: B0127369-260615)
Professional Level Certified across DX Strategy, Business Models & Case Studies
17th DX Next Certification™ (Professional Level 2026) — Professional Level Certified (Cert ID: I0134490-260915)
Professional Level Certified — Aligned with METI/IPA Digital Skill Standards (DSS)
2. 24-Year Website Renewal History (2002–2026) & 1-Click Live Verification Deck
Why Our Corporate Site Remained Unchanged for Over a Decade—and How We Rebuilt It in 2026
Between our founding in April 2002, our incorporation in July 2013, and late 2025, our engineering team prioritized client infrastructure, medical security, and regional cultural support above our own corporate PR—leaving our website as a minimal, decade-old static placeholder. In October 2026, we executed a complete 24th-anniversary architectural renewal: compiling 230+ pages through a zero-drift Rust Single-Source-of-Truth (SSoT) compiler, Astro Static Site Generation, subtree incremental search, contextual mini-TOC, hierarchy horizon cards, opt-in diagram lightbox, and 3-second 1-tap secure sign-in on PostgreSQL 19 (db01.ok.st).
Verify Core Web Vitals, Performance, Accessibility, Best Practices, and SEO scores live.
Verify HTTP security headers, Content-Security-Policy, and HSTS configuration.
Inspect live HTTP response security headers for https://ok.st/.
Audit TLS 1.3 cipher suites, certificate chain, and protocol security.
Validate semantic HTML5 markup and ARIA attribute conformance.
Verify sustainable web hosting and environmental footprint metrics.
3. Hardware, Operating System & Database Stack Specifications
| System Layer | Production Specification on ok.st |
|---|---|
| Static Edge Generator | Astro 5 Static Site Generation (Zero-JS default) + Tailwind CSS + inline semantic SVG diagrams |
| Compile-Time Verification & WASM | Rust 2024 Edition (ssot-compiler, link/frontmatter audit, and browser-local diagnostic logic) |
Edge Server (ap01.ok.st) |
FreeBSD 15.1-RELEASE, kernel pf firewall with SYNPROXY, Nginx TLS 1.3 (HTTP/2 & HTTP/3) |
Database Vault (db01.ok.st) |
FreeBSD 15.1 + OpenZFS (8 GB ARC, LZ4 compression, SHA-256 Merkle checksums) + PostgreSQL 19 (private vLAN) |
| Machine-Readable Endpoints | /llms.txt /llms-full.txt /.well-known/security.txt /.well-known/pgp-key.txt |
4. HTTP Security Header Policy & W3C Sustainable Web Carbon Budget Formula
{`# Production Nginx Security Headers on ap01.ok.st (https://ok.st/)
add_header Strict-Transport-Security "max-age=63072000; includeSubDomains; preload" always;
add_header X-Content-Type-Options "nosniff" always;
add_header X-Frame-Options "DENY" always;
add_header Referrer-Policy "strict-origin-when-cross-origin" always;
add_header Permissions-Policy "camera=(), microphone=(), geolocation=(), payment=()" always;
# W3C Web Sustainability Guidelines (WSG 1.0) Sustainable Web Design v4 Carbon Model:
# E_view = (Data_Transfer_GB * 0.055 kWh/GB) -> Carbon_g = E_view * 442 gCO2e/kWh < 0.02g CO2e / page view`}