Bitcoin dominance reached a multi-year high of 58% on September 16, the highest since April 2021.Ethereum dominance has declined by 30% over the past year, falling below 14% for the first time in three and a half years.Analysts have differing opinions on Bitcoin dominance, with some suggesting a potential retreat and the start of an altseason.Crypto markets have declined by 1.4% with Bitcoin reclaiming the $58,000 level.