Software for correlating trades in marketplaces with transactions in blockchain databases

The software will use the outputs of the metadata collection software as its inputs. By comparing changes in the data on advertised products over time (such as purchase counter, stock level and price), this software will detect the trade (i.e. the purchase of a commodity at the market) and search the relevant time window for cryptocurrency transactions whose value is closest to the calculated trade amount. The addresses discovered in this way in a given cryptocurrency are then marked with a sign identifying them as potential customers or sellers of the given marketplace.