Bitcoin has led the crypto market for most of this cycle, but something interesting is starting to happen.

Ethereum is showing signs of gaining strength against Bitcoin, while Bitcoin dominance has recently slipped below 59%. That combination is exactly why traders are talking about altseason again.

But a few altcoins pumping doesn’t automatically mean altseason has arrived.

One of the most important charts to watch is ETH/BTC. It shows whether Ethereum is gaining or losing value compared with Bitcoin.

When ETH/BTC rises consistently, it can signal that traders are becoming more comfortable moving capital away from Bitcoin and into higher-risk crypto assets.

Ethereum has already shown improvement here. ETH significantly outperformed Bitcoin over the past quarter, and the ETH/BTC pair has recently challenged a long-term declining trend.

That’s encouraging, but the market needs more than one breakout.

Another major signal is Bitcoin dominance. BTC still represents roughly 58%–59% of the total crypto market. For broader altcoin strength, traders would typically want to see Bitcoin dominance continue falling while ETH and other large-cap altcoins gain market share.

There is also the question of liquidity.

A real altseason needs more than traders rotating the same money between a few coins. Fresh capital and stronger overall market participation can help rallies spread from Bitcoin to Ethereum, then into large-cap altcoins and eventually smaller projects.

We are already seeing hints of this rotation. Some altcoins have delivered huge moves while Bitcoin has consolidated, but the strength remains selective rather than universal.

That distinction is important.

If ETH starts consistently outperforming BTC, Bitcoin dominance continues weakening, and more altcoins begin participating together, the argument for a broader altseason becomes much stronger.

If ETH/BTC loses momentum and Bitcoin dominance starts climbing again, capital could simply rotate back toward Bitcoin.

Bitcoin opened the door. Ethereum may determine whether the rest of the altcoin market gets through it.