There could very well be bitrot in your xz archive without xz detecting it: https://www.nongnu.org/lzip/xz_inadequate.html#checking https://www.nongnu.org/lzip/

There could very well be bitrot in your xz archive without xz detecting it: https://www.nongnu.org/lzip/xz_inadequate.html#checking https://www.nongnu.org/lzip/xz_inadequate.html#checking