lundi 5 avril 2021

Certify origin of downloaded file

Assume I visit the following link somerandomwebsite.com/a.pdf and download the file a.pdf. Now assume that the host replaces a.pdf with a new version of the same file under the same name so now the previous link would lead me to download a different file.

Is there a way for me to prove that the file I downloaded was indeed downloaded from that link at a given time?




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