Halving

Bitcoin's monetary policy is hard-coded: new BTC is issued as a reward to miners who successfully add a block to the blockchain. Initially set at 50 BTC per block, this reward halves every 210,000 blocks (approximately four years). The halvings so far occurred in 2012 (50→25 BTC), 2016 (25→12.5 BTC), 2020 (12.5→6.25 BTC), and April 2024 (6.25→3.125 BTC). The total supply is capped at 21 million BTC, with the last fraction expected to be mined around 2140.

The market impact of halvings is a debated but closely watched phenomenon. The supply-side logic is direct: if demand holds constant and new supply halves, price should rise. Historically, Bitcoin has appreciated significantly in the 12–18 months following each halving. However, crypto markets are now much more influenced by macroeconomic conditions, institutional flows (ETF products), and regulatory developments - making a simple halving-driven price model an oversimplification.

For miners, halvings create a structural profitability shock: revenue halves at the same operational costs. Miners who cannot cover electricity costs at the new reward level must sell BTC reserves or shut down rigs, creating temporary sell pressure. Inefficient miners exit, and hash rate may dip before recovering as more efficient operations dominate.

Halvings also affect crypto market sentiment broadly: anticipation builds months in advance, driving speculative buying. The post-halving period becomes a focal point for fund managers and retail traders alike, sometimes creating self-fulfilling momentum.