Thanks for considering it! Yes, a very simple solution would be to use the HBD to Hive conversion operation that the Hive blockchain itself has. The blockchain allows for converting HBD to Hive (also the other way around, but then there is a 5% fee). So you can use the decentralized blockchain to convert 1 HBD to Hive. The conversion operation takes 3.5 days, after which you get Hive. However much Hive you got, then this is how much Hive is equivalent to 1 HBD, as defined by the blockchain itself. The conversion operation could be started on Jan 6th, so on Jan 9th you will have the Hive and the answer of how much Hive 1 HBD is equivalent to. :)