The way to invalidate digital bills is through digital signatures, that is, revoking the original digital signature and generating a new digital signature.

Digital bills are a new type of bill produced after the rise of e-commerce in recent years. It has brought many conveniences to commercial transactions, such as fast transfers, real-time settlement, etc. However, in actual operations, sometimes digital bills cannot be recognized or have problems, and they need to be invalidated.

First, you need to confirm that there are problems with the bill, including invalid digital signatures, data tampering, etc. At the same time, the original data of the bill needs to be backed up for subsequent processing. Generate a new revocation digital signature according to the revocation rules of the note. These rules are typically defined by the issuer of the note.

Bill status

Send invalidation information to relevant nodes through the bill trading network to notify other participants that the bill has been invalidated. Update the status of the ticket to mark it as voided. Doing so ensures that the note will not be used again in future transactions. Use invalidation information and original bill data as archive backup for subsequent review or inquiry.

The digital bill invalidation process is simpler and more convenient than traditional paper bills, but you also need to pay attention to the risks similar to paper bills. In order to avoid losses caused by invalidation, tampering with bills should be avoided as much as possible during the transaction process. At the same time, establish a sound bill review and monitoring mechanism to detect and deal with problems in a timely manner.