Filament has tickled our fancy this week, with news that combines our fascination with blockchain and LPWAN. It looks like LoRa has found another adopter, with Filament adding the low-power long-range protocol to its Tap sensor hubs and gateway. With 4 pilots live, and up to 50 in the pipeline, Filament is on the up. Blockchain-focused startup Filament has been busy since we last covered them, back in August 2015, following a $5m Series A investment round that attracted the likes of Verizon, Samsung, and Haystack. Filament has added LoRa to its Tap sensor hub, which could replace the TMesh sub-GHz protocol that Filament was previously using to power the Tap. In a recent interview with EE Times, Filament’s CEO…