http://siberiantimes.com/science/casestudy/news/n0711-worlds...
The only academic paper about the bracelet I could find is from 2008 and was submitted to the journal "Archaeology, Ethnology and Anthropology of Eurasia", whose editor-in-chief, Anatoly Derevyanko, is also the paper's primary author.
Your "fresh finding" was found nine years ago - this is even explicitly stated in the 2015 Siberian Times article.
All of the citations for the paper describing the "bracelet" [1] are for uncontroversial findings (that Denisovans existed, that they interbred with Neanderthals, etc.) - none of them make any reference to the supposed "bracelet".
[1]: http://www.sciencedirect.com/science/article/pii/S1563011008...
I find no peer-reviewed followup about the Denisovan bracelet. However, I do find an article in Current Biology about Denisovan and Neanderthal ancestry in modern humans.[1] The date estimate is about right: "[W]e estimate 44,000–54,000 years ago for Denisovan admixture."
0) http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.695...
1) http://www.cell.com/current-biology/fulltext/S0960-9822%2816...