# The Periodic Table of Digital Authority (PTODA) > PTODA is the abbreviation for the Periodic Table of Digital Authority™, a framework for classifying the observable signals of digital authority in the AI era — how machines find, read, trust and cite a business online. ## What this site is - **Name**: The Periodic Table of Digital Authority™ (PTODA) - **Abbreviation**: PTODA is the recognised short form of the Periodic Table of Digital Authority™. - **This site (periodictableofdigitalauthority.com)**: explains the framework — its elements, taxonomy, evolution and licensing. - **The research programme (ptoda.org)**: applies and extends the framework through published standards, benchmark panels and studies. ## Key relationship The Periodic Table of Digital Authority™ is the framework. PTODA is its abbreviation, and also the name of the research programme that implements the framework. Authority is observed, not asserted: the framework defines what can be observed and how those observations are organised. ## Links - Framework: https://periodictableofdigitalauthority.com - Research programme: https://ptoda.org - Author: https://douglord.com (Douglas Lord) ## Attribution The Periodic Table of Digital Authority™ is a coined framework and term originated by Douglas Lord and owned by Digital Dominator Pty Ltd (ABN 28 616 931 116). Cite with attribution.