Hashbot is a forensic web tool to acquire and validate, over time, the status of an individual web page or web document.
Acquire: Insert the URL to acquire, select your favorite user agent (default is Firefox) and click on submit. Wait for creating process finish and download the zip archive.
Validate: Unzip the archive downloaded by the creation service, open the <code>-code.txt file and use the "Validate Info" section to fill in the validation form. Click on submit and wait for the server response.