This paper reviews BIBLINK, an EC funded project that is attempting to create links between national bibliographic agencies and the publishers of electronic resources. The project focuses on the flow of information, primarily in the form of metadata, between publishers and national libraries. The paper argues that in the digital information environment, the role of national bibliographic agencies will become increasingly dependent upon the generation of electronic links between publishers and other agents in the bibliographic information chain. Related work carried out by the Library of Congress with regard to its Electronic CIP Program is described. The core of the paper outlines research studies produced by the BIBLINK project as background to the production of a demonstrator that will attempt to establish some of these links. This research includes studies of metadata formats in use and an investigation of the potential for format conversion, including an outline of the BIBLINK Core metadata elements and comments on their potential conversion into UNIMARC. BIBLINK studies on digital identifiers and authentication are also outlined.