At any time you may check whether your ballot is still in the Ballot Table and is unaltered. You may view your votes on a web page, or you may download them in CSV format so you can compare them with the copy of your ballot that you saved when you voted. This will have just the ballot, not the certificates and signature.
You can find your Ballot Ticket number in the saved copy of your
ballot (typically named ballot.sig) at the end of each vote line,
or in the Ballot Ticket script (typically named vote.sh) after
emailAddress
.