This document discusses the use of persistent identifiers (PIDs) to improve access to museum collection data for digital humanities research. It notes that researchers need trustworthy, machine-readable data from reliable sources. However, museums struggle to keep their online data up-to-date, complete, and published in open formats. Assigning PIDs to artworks, data, representations and related entities allows museums to act as publishers of their collection information. This makes the data more findable, linkable, and reusable over time. The project aims to assign PIDs to the works and entities in 10 museum datasets to demonstrate improved data retrieval and enrichment for researchers.