[Viennacon]

what is the ‘verification’ part at the bottom about

[Stentor]

File verification hash. Maybe for BitTorrent.

[JamesP81]

what is the ‘verification’ part at the bottom about

Without going into too much of the details of symmetric and asymmetric encryption, those appear to be hashes, assuming they're legit. Such a hash would be used to either decrypt encrypted data or verify the source of a set of data.

[UnbelievingScumOnTheOtherSide]

MD5 hashes. There are programs to verify the identity, validity and non-tampering of files using it.