Bitcoin has recently seen some sharp spikes amid renewed interest in cryptocurrencies, but investors often remember why market legend Warren Buffett disliked it, going so far as to call it "rat poison".
Bitcoin has gained more than 7% in a month, with fresh investor optimism briefly pushing the digital currency over $88,000 last week. The first decentralised cryptocurrency has now seen some consolidation and trades near the $84,000 mark.
