The upcoming Bitcoin halving in April 2024 differs from previous ones due to the emergence of Bitcoin ETFs in the US, which introduces a new variable that could impact the post-halving market structure. Historic halvings have often been followed by significant price increases for Bitcoin within a year, such as 30x after the 2016 halving, while broader macroeconomic factors also influenced price rises. The approval of spot Bitcoin ETFs in the US provides a gateway for broader investor participation, potentially increasing mainstream adoption.