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Showing 20 of 235 results by VentMine
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Topic
Board Pools
Re: Eligius pool is back under the new name Ocean
by
VentMine
on 22/12/2023, 19:33:56 UTC
what happens if his pool mine an OFAC banned transaction ? Can he say that it's not his decision which transactions can be added to a block ? If mined , as a US citizen , can he face jail time ?

This is where user-generated block templates can be useful, the the pool operator proves that they have no say on what goes into the block templates, and they would have a better legal position, although not perfectly protected but at least something valuable you can use to defend yourself.

I really think someone with the skill set that Luke has would have served BTC better if they built something decentralized that actually works, an enhanced version of P2pool where miners bear the entire responsibility of the transactions they mine, this would be a lot harder for the state to stop or impose any sort restrictions on, think of it as torrent, do we really think that governments don't want to ban it altogether? they probably want -- they just can't.

Compare that to a centralized server that hosts "illegal" content and sits on U.S soil, as I said before, a 2 line letter and the law enforcement will shut it down.

More pools aren't the solution to censorship resistance, even worse is when those pools are centralized and owned by a known figure like Luke, it makes taking it down a piece of cake.

A regulator isn't going to let the pool operator off the hook just because they let their clients create block templates. The operator still disburses payments to the clients creating the block templates. Regulators do not care if you didn't generate illicit content, they care that you are serving it to your clients. A pool operator who serves the public will be regulated, as all public service providers are. They would probably be better off going private, and approving all client connections, if they are worried about getting regulated.
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Topic
Board Pools
Topic OP
Attacking a FPPS pool?
by
VentMine
on 08/12/2022, 05:07:55 UTC
Can another pool attack a FPPS pool by simulating high fees by paying themselves high fee txs? Or does the FPPS pool software algo know that those attacking fees are not to be counted?

My understanding is a FPPS pool uses last 24 hour timeframe of total network fees to calculate their fee payouts, why can't a large pool fake their fees to trick the FPPS pool into overpaying what they are actually expected to receive themselves for block rewards.
Post
Topic
Board Mining support
Re: Running power supplies of high frequency power, 80 hz and above
by
VentMine
on 04/12/2019, 18:35:46 UTC
Thanks for all the insight guys, I'll definitely report back once I do some experimentation.
Post
Topic
Board Mining support
Re: Running power supplies of high frequency power, 80 hz and above
by
VentMine
on 29/11/2019, 23:30:52 UTC
That's what I like to hear.

Yeah, not sure but I think the voltage regulator can adjust down the voltage at higher RPM.
Post
Topic
Board Mining support
Re: Running power supplies of high frequency power, 80 hz and above
by
VentMine
on 29/11/2019, 20:43:33 UTC
I am planning to just do it and see if it catches fire actually, but certainly hoping someone can shed technical light whether these switching power supplies can manage a higher frequency.
Post
Topic
Board Mining support
Topic OP
Running power supplies of high frequency power, 80 hz and above
by
VentMine
on 29/11/2019, 15:34:15 UTC
Sup y'all.

Wondering if I can run my antminers off of higher input frequency, I have a genset and am thinking of overspeeding it to get more HP. E.g. instead of running it at 1800 rpm, how about 2400 rpm and boost it to 80 hz?

Can the AP3W++ handle that? Will I blow anything up?
Post
Topic
Board Pools
Re: ckpool.org ZERO FEE SPLNS no registration mining pool US/DE/CN
by
VentMine
on 04/07/2019, 21:18:25 UTC
Dumb question but does this pool support overt ASICBOOST?
Post
Topic
Board Pools
Merits 3 from 2 users
Re: ckpool.org ZERO FEE SPLNS no registration mining pool US/DE/CN
by
VentMine
on 17/06/2019, 05:03:16 UTC
⭐ Merited by frodocooper (2) ,philipma1957 (1)
Hullo fam,

Im finally back on this pool, I found the second block ever so hopefully my 425 TH will help kill this dry spell once again!

Smiley
Post
Topic
Board Mining speculation
Merits 2 from 1 user
Re: My Plan
by
VentMine
on 22/11/2018, 18:57:36 UTC
⭐ Merited by dbshck (2)
Mining on natural gas is nothing new, just look at Upstream Data they do it on oil wells. www.upstreamdata.ca
Post
Topic
Board Mining support
Mining off 480/277V 3 Phase power
by
VentMine
on 21/06/2018, 15:23:20 UTC
Hey guys,

I understand the 277V L-N voltage is too high for most (all?) PSU's, what is the best way to use this power source for mining? Must I go with a step-down transformer?

THX
Post
Topic
Board Mining support
Re: Harmonics in electrical system from mining off genset?
by
VentMine
on 08/03/2018, 18:34:14 UTC
I usually measure .97 PF on APW++ PSUs from Bitmain.

You can avoid almost all harmonics issues by avoiding non-resistive loads that use the neutral.

So, run all your power supplies, pumps and fans on 240V, but the coffee pot is fine on 120V.


The gen outputs 3-phase, so I have it configured to 230V L-L, 133 L-N. The 240/120 is single phase I believe?

Thanks for the responses guys, I didn't think I needed to worry about filtering but a recent conversation with a genset supplier spooked me.
Post
Topic
Board Mining support
Re: Harmonics in electrical system from mining off genset?
by
VentMine
on 07/03/2018, 17:26:04 UTC
Yes harmonics issues are possible if using cheap PSU's. However, most today have PFC - Power Factor Control - that mitigate the problem. Most will advertise if they have PFC and give a Power Factor rating.  A perfect resistive load gives a PF of 1.0 and most PSU's will be around 0.85 to 0.9

Ahh k. Thanks gents. So I take it the Bitmain supplied PSU's have this as I recall their powerfactor is 0.95
Post
Topic
Board Mining support
Topic OP
Harmonics in electrical system from mining off genset?
by
VentMine
on 06/03/2018, 22:40:57 UTC
Hey guys,

Curious I was talking to a genset vendor today and he mentioned running "server-like" equipment (Antminers) off of a genset may potentially have issues with harmonics and require harmonic conditioning to protect the alternator.

Should I be concerned about this?
Post
Topic
Board Mining support
Re: Surge protector required to run Antminers off genset?
by
VentMine
on 01/03/2018, 22:43:37 UTC
Yes there is no utility power at all. Only reason i'm asking is because the surge protector isn't cheap, so I'm looking at different ways of reducing costs.
Post
Topic
Board Mining support
Re: Antminer S9 - Actual CFM at full fan RPM
by
VentMine
on 28/02/2018, 23:01:02 UTC
Good idea, maybe I can finally contribute something useful to the community hehe. Will update with results Grin

+VentMine Any progress on measuring the pressure drop/differential? 

No I never bothered to do it lol. I found out the fan CFM was 220 / S9, made some assumptions and built my farm out on the assumptions :S
Post
Topic
Board Mining support
Re: Surge protector required to run Antminers off genset?
by
VentMine
on 28/02/2018, 22:57:14 UTC
Is it required?  No.  Is it a good idea?  Yes.

Agreed.  How far is your genset from your devices?

Please also confirm your talking about a motor/generator device - which does do a good job of power isolation.

Curious why you are using one though???

Genset is about 3-4 feet away. Yes talking about a natural gas genset Smiley
Post
Topic
Board Mining support
Re: Some PDU Part#'s
by
VentMine
on 28/02/2018, 22:53:33 UTC
Cool these look like good units. I just asked for a quote.

Mind if I ask what you paid for them?

Also - just a general question for PDUs: My power source is three phase but I will be running the PDU's off single phase L-L of 230 V. For a PDU with input voltage requirement of 230V, does it matter if it is L-L voltage or L-N?

Thanks
Post
Topic
Board Mining support
Topic OP
Surge protector required to run Antminers off genset?
by
VentMine
on 23/02/2018, 20:59:21 UTC
I am running Antminers off a genset and I have a surge protector installed on the panelboard to protect the Antminers and PSU's in case of a surge. I am wondering if surge protection is really needed? Maybe the APW3++ PSU's have adequate protection in place in case of a surge?

Being a genset, I'm not sure what kind of scenarios may require a surge protector, lightning? Maybe if half the mining load drops and there's a voltage spike?
Post
Topic
Board Mining speculation
Re: Mining containers static electricity
by
VentMine
on 23/02/2018, 17:11:24 UTC
These guys mine in containers successfully therefore I doubt static electricity has been a problem.

www.upstreamdata.ca
Post
Topic
Board Mining support
Re: Some PDU Part#'s
by
VentMine
on 23/02/2018, 16:49:53 UTC
Thanks for this Raymond, I have been thinking the exact same thing - most PDU's aren't meant for ASICs.

I'm also interested in learning the part # for the above mentioned switched PDU's. Speaking of switched PDU's, have you encountered any really good deals on switched PDU's that are suitible for ASICs?

Cheers

I have not found any "affordable" switched PDUs yet. Most command a premium, I am still looking though. I work with an APC and a Vertiv reseller  I am waiting to hear back on what they can find. I need to ping them again.

Sounds good. If you find good prices on PDU's that are suitable for 30A +, keep me posted, I may be in the market for a significant amount (especially if we can find low-cost switched PDU's).