  The production and consumption of information about Bitcoin and other
digital-, or 'crypto'-, currencies have grown together with their market
capitalisation. However, a systematic investigation of the relationship between
online attention and market dynamics, across multiple digital currencies, is
still lacking. Here, we quantify the interplay between the attention towards
digital currencies in Wikipedia and their market performance. We consider the
entire edit history of currency-related pages, and their view history from July
2015. First, we quantify the evolution of the cryptocurrency presence in
Wikipedia by analysing the editorial activity and the network of co-edited
pages. We find that a small community of tightly connected editors is
responsible for most of the production of information about cryptocurrencies in
Wikipedia. Then, we show that a simple trading strategy informed by Wikipedia
views performs better, in terms of returns on investment, than classic baseline
strategies for most of the covered period. Our results contribute to the recent
literature on the interplay between online information and investment markets,
and we anticipate it will be of interest for researchers as well as investors.
