Historical retrospective · Bitcoin
Bitcoin’s 2012 reward reduction put its issuance schedule into practice
The 2012 block-subsidy reduction was the first live test of Bitcoin’s rule that new issuance declines at fixed block intervals.
Nodes independently enforced the new reward limit, making monetary policy a consensus property rather than a committee announcement.
The event became a reference point for later halvings and public debate about predictable supply.
Predictability is not the same as price certainty; the protocol controls issuance mechanics, not market valuation.
Primary source
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