Bitcoin information website Bitcoin.org is coming with guns blazing against those who have signalled support for SegWit2X, the protocol change embedded in the BTC1 software clients that stemmed from the New York agreement.

On Thursday, the website published a blog post announcing that it will publicly denounce on October 11 supporters of the hard fork scheduled to happen around November 18. In its announcement, Bitcoin.org threatened to place banners on every page of the website “warning the risks of using services that will default” to SegWit2X.

“S2X companies will be called out by name,” the post stated. “To ensure that we only warn users against companies that will actually put user deposits at risk, we urge all companies to publicly clarify their stance before the above date, either by a highly-visible public statement or by commenting on Bitcoin.org issue #1835 (or by doing both).”

Specifically, Bitcoin.org demands that such companies will not list the SegWit2X chain as “BTC” or “Bitcoin” nor will they do anything to “deprive users of their coins.” This may include crediting BTC deposits only as S2X deposits, although providing access to S2X coins is “acceptable.” Lastly, the companies must also continue to provide normal service to non-S2X users.