CTDA Policies

This page presents CTDA policies in summary view for quick reference. For the full CTDA policies see:  CTDA Policies (Link) 


  • The CTDA is open to all educational, cultural, and memory institutions, as well as informal groups and individuals that have made a commitment to preservation and access of their historical collections. 
  • Members sign an MOU with the CTDA pledging to follow the Policies and the Code of Conduct.
  • Each member receives a minimum amount of preservation storage services at no cost. That minimum amount may change, but will never be lowered. 
  • Members may purchase additional preservation storage services at rates set each January by the CTDA, either by yearly subscription or Pay Once Store Forever. 


  • All digital content deposited within the CTDA remains the property of the depositor.
  • The CTDA and its participants encourage the deposit of digital materials within the CTDA to be openly available to the public whenever possible
  • CTDA membersand contributors are responsible for adhering to the copyright policies of their organizations, which includes adherence to United States federal copyright law.


  • The CTDA works within evolving “best practices” to be responsible stewards and will work to preserve the metadata and supported digital and media objects.
  • The CTDA commits to preservation of source primary content data streams at the bit stream level
  • The CTDA commits to preservation of standards-based core metadata in an interoperable format for all objects
  • CTDA follows the Open Archives Information System (OAIS) framework for digital asset preservation and repository construction.