You have a hashref, whose value is an anonymous array. The elements within the anonymous array are anonymous hashrefs.... Man Perl is cool.

while (my ($key, $value) = each %{$thedata}) {
    # $value is anon arrayref
    for my $hashref (@{$value}) {
        print $hashref->{name}, "\n";
        print $hashref->{reference}, "\n";
    }
}
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