Die Deterioration, extremely common on the 5 cent, 10 cent and 25 cent coins minted for 2001, its almost impossible finding one without showing this extent of Die Deterioration. Some have also called them "deterioration lines" because they typically go from the device right to the rim in random spurts of lines around the whole obverse and reverse.
Aggressively searching Canadian Small Cents on a daily basis since 2018.
Nope. Die Trails are something completely different. Note that most Die Deterioration is radial in fashion, directly towards the rim. You can see these same features going back to the late 1930s, before they started chrome plating the dies (this is a 1940 cent).
"Discovery follows discovery, each both raising and answering questions, each ending a long search, and each providing the new instruments for a new search." -- J. Robert Oppenheimer