The day has come. It is happening.
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The Bitcoin scaling proposal UASF (BIP 148) was successfully activated on Tuesday, August 1, at block 478484. At the same time, the price of Bitcoin exceeds $2900.
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Distributed database that is used to maintain a continuously growing list of records, called blocks
There was a possibility that with the UASF activation there would appear a separation of the Bitcoin blockchain. Fortunately, this scenario was avoided due to the fact that BIP91 was activated on July 23rd.
Luke Dash Jr., Bitcoin Core developer, shared the news on Twitter:
— Luke Dashjr (@LukeDashjr) August 1, 2017
Initially, UASF (BIP 148) was to serve as the beginning of the activation of Segregated Witness (SegWit) protocol. One of its features is that all user nodes signaling in support of UASF will start rejecting blocks that do not contain the same support at 00:00 UTC on August 1st.
As already mentioned, thanks to the activation of BIP91, this was avoided, and on August 8, the SegWit protocol is expected to be fixed.