Can't find much info on M-DISC, but https://www.verbatim.com/subcat/optical-media/m-disc/ https://www.verbatim.com/subcat/optical-media/m-disc/ has it as hundre

Can't find much info on M-DISC, but https://www.verbatim.com/subcat/optical-media/m-disc/ https://www.verbatim.com/subcat/optical-media/m-disc/ has it as hundreds of years. Silca is claiming a thousand years.