Geez, I was way off base. Sorry about that. I'm guessing you're not in the US. I am in the US. The receipts I've gotten do not contain serial number of bills. This is my opinion on the matter. Simply stated the information on a receipt is typically needed for proof of withdrawl against the account on the receipt for You. Your bank account report would coincide. Serial numbers of each bill on a receipt I think would be for your records. If the police wanted to trace a bill I would guess they would use the banks as the resource since they would hold the data. If your country holds a central database on serial numbers brought in and out it would be easy for them. If they don't it would be a very tedious job to trace a bill. Looking for who got the $$ bill and when. I still say the receipt is for you for information only. Be Safe.