Recently Bitcoin proponents who support Segregated Witness (Segwit) have been fervently discussing BIP 148, a User-Activated Soft Fork (UASF). On March 24 the mining operation Bitfury mined a block with a BIP 148 (=UASF-Segwit) tag, signaling the organization’s support for the proposal.
As the block size debate continues, many are moving in different directions to come up with a solution for Bitcoin’s future scaling. A few weeks ago a pseudonym named “Shaolin Fry” introduced the idea of a Segwit UASF, which would attempt to activate Segwit before reaching a 95 percent threshold of consensus between miners. In essence, the proposal is a mandatory activation of Segwit deployment, which would take place between October 1 and November 15, 2017.
The idea has gained some traction with those that would like to see it explored and reviewed by other developers. BIP 148, authored by Shaolin Fry, is currently on Github and is available for community and developer review. The anonymous creator of BIP 148 explains the rationale behind UASF, otherwise known as “Flag Day”, detailing that P2SH was introduced in a similar fashion.
“Historically, the P2SH soft fork (BIP16) was activated using a predetermined flag day where nodes began enforcing the new rules,” explains Fry’s UASF proposal. “P2SH was successfully activated with relatively few issues. By orphaning non-signalling blocks during the last month of the BIP9 bit 1 “Segwit” deployment, this BIP can cause the existing “Segwit” deployment to activate without needing to release a new deployment.”
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