The medieval registers of the Notre-Dame de Paris cathedral chapter (ca. late 13th - 16th centuries), over 14,000 pages of which have been digitized and automatically transcribed (HTR), are now available on the https://endp.chartes.psl.eu/ application. The sharing of this previously unpublished corpus, which is invaluable for renewing our knowledge of medieval Notre-Dame administration and management, is the result of collaborative work carried out as part of the ANR e-NDP project. This document begins by presenting the corpus. Then, it focuses on the data acquisition workflow (image, text and annotation), and the application architecture. Finally, It explains how the resources produced as part of the project are linked and shared together in the context of academic research.