Help learn more about this blade and its origins

[Reefishere]

There is no signature to my knowledge but a name is Etched on the tsuba

[Rivkin]

Unfortunately the tsuba has nothing to do with the blade and its a difficult case since the blade has been cut down significantly. If possible please take a good picture of the boshi and a photo of the activities, in both cases placing light way on a side rather than a bit from above, though the picture you took is not bad. There might be some potential here, though the chip is unfortunate.