According to @binance, Bitcoin’s first Halving took place in 2012, marking the inaugural 50% reduction in BTC’s block subsidy and setting a structural supply-tightening backdrop, source: @binance. The event occurred at block 210,000 on Nov 28, 2012, cutting the block reward from 50 BTC to 25 BTC and reducing new issuance from roughly 7,200 BTC/day to about 3,600 BTC/day based on 10-minute block intervals, source: Bitcoin.org; Blockchain.com explorer. For trading, this mechanically halves the flow of newly mined BTC that can reach spot markets, heightening focus on liquidity and miner behavior around issuance regime shifts, source: Bitcoin.org.