Signal categories
Signals group across 8 categories: AI Authority, Entity & Brand, Trust & E-E-A-T, Content, Schema & Structure, Links & Citations, Architecture Sub-Signals, and Risk & Violations. Each category weights differently across the four Smart Cards.
IP notice
The Periodic Table of Digital Authority is an original framework conceived by Douglas J.T. Lord, AUTHORITY44, 2026. The periodic table format is an established scientific metaphor applied independently across many fields. WIPO application in progress. Trademark filed. All rights reserved. Reproduction without licence prohibited.