Blocky saysThe halving cuts Bitcoin’s block reward in half every ~4 years, enforcing its fixed supply.
New bitcoin enters circulation as the block reward paid to miners. Every 210,000 blocks (~4 years) that reward halves — 50 → 25 → 12.5 → 6.25 → 3.125 BTC — asymptotically approaching the 21M cap around 2140. This programmed, predictable disinflation is central to Bitcoin's "digital gold" narrative and historically precedes major price cycles.
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Block reward halves every ~210k blocks (~4 yrs)
50 → 25 → 12.5 → 6.25 → 3.125 …
Approaches the 21M cap (~2140)
Programmed, predictable disinflation
Double-Spend Dan attacks — common mistakes
Thinking supply is arbitrary/inflatable
Assuming halvings guarantee price moves
Confusing the cap with current circulating supply
Boss battleCompute the reward after four halvings starting from 50 BTC.
Example code
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<body style="background:#06040d;color:#e6e0ff;font-family:monospace;padding:20px"><pre>50 → 25 → 12.5 → 6.25 → 3.125 BTC
every ~4 years, toward 21M cap (~2140)</pre></body></html>