[Mark]

My id would not be known. If I see my results are wrong, that’s not a big deal, but 50,000 voters also complaining-—that would be a problem.
If my id is known as soon as I receive the ballot, then that is a problem, but that is the current procedure anyway.

[Repeal The 17th]

But you have to understand human nature...
The union boss would ask members to show proof they voted “right”.
The low information folks would show they voted “right” for a cash payment.
etc.; etc.; etc.
Your thought is just a really bad idea.
How you vote has to remain a secret.

[freeandfreezing]

Your scheme doesn't address the reality of the kind of voting system attacks that matter, and creates some new possible attacks and essentially defeats the anonymity and privacy of the voting system. If you are able to take with you a copy of your ballot, which is what you are suggesting, and that copy is linked to your actual ballot, then in theory you can check to see if the ballot shown to you is the same as your receipt.

But of course then voters can be subjected to extortion, or coercion to vote a particular way. When your boss says "bring in your ballot receipt" what are you going to say? How about when it gets requested in a subpoena?

Also, how do you know that the ballot you see, say on some govt. server, matches the ballot that was actually counted? Any fraudulent voting system would simply show you a ballot that matched your receipt, but how would you know it was actually even counted, or if it was counted correctly?

Actual election integrity and security depends on the people involved, and procedures that the public can observe and ensure result in a fair and accurately tabulated election.