Of the 12-digit transaction number, digits 10 & 11 (ie; #########NN#-Chb) change each month. They increase by 10 each month if my pattern is common. It could be that digit 9 also changes in the same way, but I haven’t received enough payments to have got to that incremental increase yet.
If a background check on the transaction number could be done, using only the first 8 or 9 digits (which never change), this may be possible. But I’m not familiar with the inner workings of the app and how it handles deposits which ‘may be very similar’.