Intuitive Website owner verification

Hello I'm developing a web app where the user needs to verify that they are the "Owner" of the website. I know there is code verification but how would I check if that verification is on their site without over complicat开发者_如何学JAVAing the verification method?

Also, I'm thinking about giving the site owner an hour to verify, how would I automatically detect if the hour is over and be able to delete them from the database?

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The way Google or Yahoo do this is to require the webmaster to create a file with a special cryptic name (the file length can be 0), which is generated by Google/Yahoo. Could be something like "dsaa6fd4sgfdsf324gd.html". So you generate such a unique (name) string for each websit eto be verified, store it in the DB, and then you go and try to GET it from that site. If the GET succeeds you can set "verified=true" in the DB for that site and file name.

To answer the 1hr question we'd have to know what technology you are using. There are many options to run timed background jobs from a web application. Usually you write the job details into the database, and have a background daemon check the DB periodically and execute any pending jobs. You could tell it (that daemon) to execute a job one hour later to see if the file (see above) exists. Well, you have to do it that way in any case, it's no use simultaneously telling the webmaster to create that file and check for it right away :)