Your article states:<p>"Popular blockchains manning Bitcoin and Ethereum, two of the most frequently used cryptocurrencies boast a 100% downtime"<p>I don't think that is what you meant to say.<p>I also don't think you really want to include Ethereum in any discussion related to stability vis-à-vis the hardfork and all PoW blockchains are susceptible to 51% attacks.<p><a href="https://thenextweb.com/hardfork/2018/05/30/heres-how-much-it-costs-to-launch-a-51-attack-on-pow-cryptocurrencies/" rel="nofollow">https://thenextweb.com/hardfork/2018/05/30/heres-how-much-it...</a>