User activated soft fork

A user activated soft fork (UASF, or user-activated soft fork), in the context of bitcoin,[1][2] was a plan to activate a bitcoin soft fork on a specified date and enforced by a majority of full nodes rather than relying on miners. In order to succeed, participating nodes must have represented a so-called "economic majority" - users, exchanges and businesses with significant influence over the bitcoin economy.[3] A UASF requires developer, industry and user coordination. In the past, a UASF was successfully carried out to activate the P2SH[4] soft fork (aka BIP16[5]). On Feb 25, 2017, a pseudonymous contributor named Shaolin Fry proposed that UASF be used to activate Segregated Witness and later published details in BIP148.[1][6]

UASF is commonly misspelled as USAF.[7] USAF is not a common acronym for anything in the context of bitcoin or blockchain technologies.

See also

References

  1. 1 2 Wirdum, Aaron van (Mar 2, 2017). "The Latest Twist to the Block Size Debate Is Called a "UASF"". Bitcoin Magazine. Retrieved 18 June 2017.
  2. ↑ UASF on bitcoin.org
  3. ↑ Hertig, Alyssa (Apr 11, 2017). "Bitcoin's Latest Scaling Twist: Support is Building for a UASF". Coindesk. Retrieved 18 June 2017.
  4. ↑ "Pay to script hash - Bitcoin Wiki". en.bitcoin.it.
  5. ↑ Gavin Andresen (3 January 2012). "BIP 16 - Pay to Script Hash". Bitcoin Improvement Proposal.
  6. ↑ Shaolin Fry (12 March 2017). "BIP 148 - Mandatory activation of segwit deployment". Bitcoin Improvement Proposal.
  7. ↑ Sample quote. Lutpin (June 7, 2017). "BIP148 – UASF on August 1st". Crypto News. Crypto-News.net. Retrieved 11 July 2017. The BIP (still without any number) recommends an User-Activated Soft Fork or USAF on August 1st
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