There is nothing to be found at the published waypoint of this mystery cache, no need to go there.
I executed a Bitcoin payment of 0.00086425 BTC the day I created this geocache. This resulted in a transaction with 2 outputs, one of them equal to 0.00086425 BTC. This amount was chosen very carefully, although the number itself has no meaning.
Find the Bitcoin transaction and you will find the geocache.
There is no geo-checker for this cache. The presence of a geo-checker might lead you in the wrong direction. When you find the correct solution, it will be so obvious that you won't require a geo-checker. And if you think you need a geo-checker, then you can be sure your method is wrong.
FTF = mnous STF = brumilhaag TTF = Belsken