Similar to this market, but for the period from Jan 1 2023 to Jan 1 2026, rather than just one year. Will resolve based on whether the ETH-BTC ratio reported by Google Finance goes up over that period.

Oct 15, 2:37pm: With Ethereum outperform Bitcoin over three years from 2023? → Will Ethereum outperform Bitcoin over three years from 2023?

Google Finance gives ETH/BTC of 0.072 at the start of 2023, so this is what it will have to beat.