M
What is Miner Activated Soft Fork (MASF)?
Crypto Glossary Definition
A soft fork activated because miners signaled (voted) for it.
Why Miner Activated Soft Fork (MASF) Matters
A MASF relies on miners signaling support (usually via a threshold like 95% of mined blocks) before the new rules formally activate, which puts miners in a de facto gatekeeping role over protocol upgrades. This is part of why the alternative UASF model — where node operators rather than miners drive activation — became an important precedent during Bitcoin's SegWit rollout.
Still have questions about Miner Activated Soft Fork (MASF)?
Ask ARIA, our free AI crypto intelligence agent, for a deeper explanation.
Ask ARIA →