User Activated Soft Fork
UASF is an acronym which stands for User Activated Soft Fork in the context of Bitcoin.
A UASF is the coordinated activation of a Bitcoin soft fork on a specified date and enforced by a of full nodes rather than relying on miners alone. In order to succeed, participating nodes must represent the so-called “economic majority” – users, exchanges and businesses with significant influence over the Bitcoin economy. A UASF requires developer, industry and user coordination. In the past, a UASF was successfully carried out to activate the P2SH soft fork (aka BIP16). On Feb 25, 2017, a contributor named Shaolin Fry proposed that UASF be used to activate Segregated Witness and later published details in BIP148.
UASF is commonly misspelled as USAF . USAF is not a common acronym for anything in the context of Bitcoin or blockchain technologies.
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