| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a lottery ticket to be scarcely illegally used by means of forgery or falsification at a reduced operation cost of a collating and verifying system. SOLUTION: In the lottery ticket 20 having a lottery symbol 12 indicating a winning rank, a winning prize and the like and printed thereon, the symbol 12 and a confirmation symbol 17 encrypted by calculating from winning data such as the winning rank, the winning prize money and the like using an encryption key are printed. In this case, the symbol 12 and/or the symbol 17 may be concealed. As the concealing, a scratch ink or a blindfold seal difficult to be recoated may be used.</p> |
