A record (i.e. who voted, when and with which credential in the
context of the web server) is a notion that does not exist in the
cryptographic protocol and does not really make sense in the context
of the command-line tool.

By the way, we add the notion of receipt which, in the context of the
web server, is the ballot hash computed by the server.

Bonus: when a ballot is accepted, we compute its hash only once.