Cardano Founder Charles Hoskinson characterizes XRP and ADA as safe blue chip cryptocurrencies while referring to Solana as mid.Hoskinson highlighted the possible criteria behind the selection of the assets that will feature in the U.S. crypto reserve.ADA and XRP received high ratings and were included in the U.S. crypto reserve based on their longevity and resilience.Hoskinson described Solana as 'kinda mid' and acknowledged its resilience, especially after the FTX incident in 2022.