Many Ubuntu versions like 18.04.1, 18.04.2, 16.04.3, kubuntu, lubuntu, xubuntu, couldn't find it's checksum of .iso file from websites, but the .iso can be downloaded from a torrent file providers like https://linuxtracker.org, does the torrent file provide the checksums for the .iso?

1 Answer 1


The torrent mechanism itself has builtin checksumming of each piece of the torrent contents (each piece is identified by a hash, so to know you got the correct piece, its hash has to be checked). So any decent torrent client should be doing that anyway.

However, for manual verification, the official Ubuntu ISO archives (https://releases.ubuntu.com/ and https://cdimage.ubuntu.com/) have signed checksums of the ISO files. You can also find torrent files there. For example, for 18.04.6:

Obsolete releases like 18.04.1 can be found in https://old-releases.ubuntu.com, for example, with https://old-releases.ubuntu.com/releases/18.04.1/:

Other flavours can be found in https://cdimage.ubuntu.com/, e.g., with Kubuntu:


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