Bitcoin halving occurs approximately every 210,000 blocks, which translates to roughly every four years. This fixed schedule is hardcoded into Bitcoin’s protocol by its creator, Satoshi Nakamoto, to ensure a controlled and predictable supply of new BTC entering circulation.

Why Every 210,000 Blocks?
Controlled Inflation – Bitcoin’s supply is capped at 21 million coins. Halving slows down the issuance rate, mimicking the scarcity of precious metals like gold.

Gradual Reduction – By cutting the block reward in half at regular intervals, Bitcoin transitions from high inflation (early mining rewards) to eventual zero new supply by around 2140.

Economic Incentives – The four-year cycle balances miner rewards with security, ensuring miners remain profitable long enough to secure the network before rewards diminish.

Impact of the Four-Year Cycle
Historically, halvings have triggered bull markets due to reduced selling pressure from miners.

The predictability builds trust in Bitcoin’s monetary policy, contrasting with unpredictable fiat inflation.

Ultimately, Bitcoin’s halving cycle is a core feature of its deflationary design, ensuring scarcity and value appreciation over time.