The most recent results achieved via the continuous comparison BIPM.RI(II)-K1.Ce-139  have been published including new results obtained by  LNE-LNHB (France) and NMISA (South Africa). Ce-139 is notably used as a source for spectrometer calibrations. This report represents the first key comparison report embedding machine-readable (XML and JSON) versions of the document. Use of the PDF/A-3 standard in this way was originally suggested by METAS (Switzerland) in the context of Digital Calibration Certificates. The recent update of the BIPM.RI(II)-K1.Ce-139 comparison – using the BIPM's International Reference System (SIR) for radionuclide metrology – provided an opportunity to introduce this approach for the first time in reporting a key comparison. (see also https://www.bipm.org/en/-/2022-09-30)