Every 4 years, BTC mining reward halves. 2024 halving: 6.25→3.125 BTC/block. Historical pattern: +200-400% in 12-18 months after halving. Next halving: 2028.
Year 1 post-halving: bull market (parabolic). Year 2: bear market (-70-85%). Years 3-4: accumulation. Verified 3 times (2012, 2016, 2020, 2024).
Increased from 0.1 (2017) to 0.6 (2022). In global panic → BTC falls like tech stocks. In rallies → outperforms strongly.
International exchanges (Binance, OKX, Bybit with KYC). P2P (Binance P2P, Remitano). Cold wallet (Ledger, Trezor). Avoid margin if beginner.
5-10% portfolio max. Dollar-cost average (DCA) better than lump sum. 80-100% annual volatility — prepare mentally for 50%+ drawdowns.
BTC not legal payment method in Vietnam. Owning is not illegal. Tax: no clear regulation yet — consult lawyer.