While feeling sorry for myself for having bought an A3, I started poking around at siamining.com looking at the stats on their "top miners" page and came across the #1 miner:
https://siamining.com/addresses/0104ceeee0c1335e6770b9e620baa87615e1780ea1a5e6bca2df2651c92313f9c3aa56865535

This address has 415 workers, each of which is running at 3Th/s to 4Th/s producing overall around 840Th/s, generating 533,993.75 SC in the last 24 hours, which at the current (0632 PDT 4/27/18)  value of approximately $30 per 1K SC is 553 X 30 = $15,900 per day!

How is this possible? An A3 produces 840 Gh/s, so it seems like it would take 1,000 A3s to produce 840Th/s. Could this be Bitmain running their own (unavailable) miners that they have built to a 2 to 4 Th/s spec? Who else could do this?

Of course, even Bitmain has to pay for electricity, but I would tend to think they would locate their miners close to one of the massive hydroelectricity dams in China or have a monster solar farm to the west of Beijing in the Gobi desert or something equally wild.

Here is a discussion that I don't pretend to understand on stack exchange of how memory "hardness" may block ASICs by not allowing their faster processing time to be effective:
https://crypto.stackexchange.com/questions/29890/memory-hard-proof-of-work-are-they-asic-resistant/39784
This would seem to indicate that changing the algorithm is not the only factor. To my limited understanding, it might mean the chip architecture itself might have to be changed. Bitmain is not going to send you replacement chips when the X3 doesn't work for Monero.
Off topic, but I was very surprised that the Sia developers did not try to block the A3.
I can't help but see Bitmain as an obstacle to the viability of crypto-currencies.
Some of the developers of Monero are advocating making the currency completely not able to be mined. Interesting idea. You can mine gold, you can mine diamonds and other traditional tokens of value, but you can't mine dollars or any other fiat currency.

As I understand it, the Monero developers are planning a "network upgrade" (hard fork) for April 6, for the specific purpose of blocking the Antminer X3, and other ASICs, so no, I would not recommend buying one. Keeping ASICs from ruining the currency by over-mining it has been part of the developer team's goal from the beginning. Bitmain don't care at all, apparently, that the D3 can't even pay its own power bill, now, so they are certainly not going to care if the X3 is immediately useless. You might note that orders can not be cancelled, even before the miner is shipped. It may be that other Cryptonight coins will be mineable, though. Still, it is a real gamble to buy something that will not be shipped until June. Good luck!

Unless I'm missing something, it seems to me that it is already more useless than the D3. I entered its specs in whattomine as though it was a GPU and the result was around $2.00 per day gross and a little more than $1.00 net per day.

Thanks to you both! Both solutions worked. I was able to use WinSCP to verify the changes.

I'm posting this in the Bitcoin hardware forum since it seems to apply to nearly all recently released antminers. I have tried a few times to connect to an Antminer with cute ftp in order to edit out the antbleed lines in the hosts file, but cute ftp hangs without connecting.

I was able to use PuTTY to connect and was able to cd to the etc folder, but the command "sudo nano /etc/hosts returns "sudo not found" so I guess the version of linux the antminers run doesn't include the program sudo.

Is there anyone who knows more than the scraps of linux that I know who is willing to help?

Thanks,

edwardBe

edwardBe, actually. Thank you.

I am getting a message when trying to have an ongoing PM conversation that I can only send one PM per hour unless I upgrade to a Copper membership whatever that is.

I'm in the process of an escrow arrangement, so this is a serious obstacle.

Is there a way around this arbitrary-seeming software "feature"?

Kind of reminiscent of the gold mining days in California in the 19th century. The people who made the most money were the ones selling mining equipment, mules and horses and wagons, clothing, food, liquor, housing and sex.

On a different note, a newb question: I don't understand why more miners means more difficulty. Do they compete with each other somehow? I thought the difficulty would be just how hard it is to find a block and verify it.

This guy, CryptoCrane is very helpful on Amazon as well he should be since he sells antminers for a steep profit compared to buying them yourself from Bitmain, but that's how arbitrage capitalism works.

In this video he demonstrates that the APW3++ PSUs from Bitmain are dual voltage. You just need the right cord to go from the PSU to the wall. If your usual appliance voltage in Canada is 110 like it is in the US, you need only get the right cord to connect to a standard C13 power socket. https://www.youtube.com/watch?v=e07eW6-rBPI.

It is a very standard power cord for many appliances like item #B00005113L on Amazon.

So, no don't pay for an EVGA PSU, just be sure to buy the APW3++ from Bitmain. Note that the PSU will draw more amps on 110V than it will on 220V, so you will need to use a circuit that supplies at least 15 amps to supply 1600 Watts, better yet 20 amps.

I'm trying to get my CXC coins out of Bittrex and into a wallet on my computer. I installed the wallet from links on the CXC website and tried to send a test amount of CXCs from Bitterex to the wallet's address. Bittrex shows the withdrawals as completed, but nothing is showing up in the wallet which says it is not synced and not connected to the network. Any help would be much appreciated. Thanks!