I don't mind giving 1 BTC out of more than free 6 BTC.

Sure, bla bla bla...
Unfortunately we won't have the pleasure to hold you accountable for your blabber.
Marathon Digital Holdings
announced their Slipstream service around February 22
nd, 2024. In their investor relations post they don't talk about a non-public mempool explicitly. Lots of yadda yadda about how "special" they are and offering an unique service no one else offers, yadda yadda.
It was talked about on whatnot crypto coin news sites as Bram24732 indicated. Maybe not immediately with the property of a non-public mempool for transactions submitted to slipstream.mara.com. From very crude search I've done, initial focus was more on the topic of non-standard transactions. I'm not sure if MARA actually needed their service to have a non-public mempool. Anyway, I think their main motivation is to provide an unique service where they can charge at least double or more Tx fee rates than by normal block space competition.
First mention of Slipstream to my knowledge in this forum was here,
https://bt.irlbtc.com/view/5487786.msg63775224#msg63775224 by FinneysTrueVision. About two months later again by ABCbits here,
https://bt.irlbtc.com/view/5495707.msg64052681#msg64052681 in the context of being able to submit non-standard transaction that won't otherwise be transmitted by other nodes and subsequently mined by miners.
Search hits via ninjastic.space and search for "slipstream.mara.com" in post body. I might've missed other posts.It's true that WanderingPhilospher was first to elaborate about Slipstream service as a means to counter transaction sniping bots. Kudos to him for actually using his brain cells to post something valuable in this thread, in contrast to the bs we have to endure here for quite some time.
I wonder what puny contributions the pay-WP-gratitude camp and other near-zero-value posters here have given so far? How about compensation for the nonsense, conspiracies, magic voodoo or other non-sensical crap you've spouted here?
You can chill now, my sporadic rant is over. I'll populate my ignore list in the hopes that I don't catch brain cancer by following here.
