The falsifier of the BTL was the existence of Neptune, once discovered.
Yet, the (unrecognized) existence of Neptune was a truthmaking condition for the validity of the BTL.
Therefore, the existence of Neptune was both a truthmaker for and falsifier of the BTL.
(I'm not the only one who hears "B.L.T." whenever I read "BTL", am I?)
Images I have: Johann Elert Bode, with full confidence in its truth, successfully using the BTL to explain astronomical phenomena at the cutting edge of the science in his day. The planet Neptune, unknown, orbiting the sun in space, influencing the very motions of the planets being described by the BTL. Passage of time. The discovery of Neptune. The planet Neptune, now recognized, orbiting the sun in space, still influencing the motions of other planets in ways yet to be described by a later law.
If at some point humanity lost awareness of Neptune but somehow managed to salvage the BTL, would the BTL be true again? Was it ever true? Is any scientific equation ever true? Should we even speak of the Bode-Titius Law as a natural phenomenon if it could so easily be "repealed" by human cognition? If a scientific law can apply to the system called "the Milky Way", can another law not just as plausibly apply to a system called "the Milky Way without reference to this and that planet"? If laws can apply when restricted to a certain range of material objects, can they not also apply when restricted to a range of temporal units (e.g. could we not construct a "law of nature" which explains why I ordered a bacon waffle sandwich at 15:30 this afternoon but makes no mention of why anyone else ordered something nor of what I did before or after that time)?
I am, once more, a very diffident scientific realist.