So, daily earnings based on three hour hashing rate is only true if the average block solving time is 3 hours?  I see.  Right now the average block solving time is 5.58 hours.  So,  the daily rate at 3 hours is 54% high? (3)(100)/5.58=53.76%

Then to get a true estimate of our daily earnings we should take the daily earnings based on 3 hours and multiply by .5367 to get an accurate estimate?  (Statistics aren't my strong suit so I'm asking.)

So if there's a 24 hour block and at 20 hours the user moves to another pool, on hour 23 his shares are dropped?  At hour 24 all users only have shares from the last 3 hours?

So, same controller as the C1 but not using the micro-SD card?

Me too.

I had been an loyal user of another pool.  The slim profit margin now has me here at Eligius. 

I record my estimated total BTC daily and have listed my daily estimated mined.  This seems to be at a variance from the Eligius shown estimated earnings. 

With the recent long blocks the estimated earnings dropped by .001 or more as one would expect, lower earnings with long blocks.  But I see that my estimated earnings, down the last couple of days to 25% lower than the daily estimated earnings figure derived from today's minus yesterday's, tho low from the long blocks, has been consistently lower all along albeit by less a margin than recently. 

This would seem to indicate that the 3 hour hashrate estimate of daily earnings is inaccurately high even with shorter blocks.

Is this due to rejects perhaps?  I've been experimenting with increased efficiency and have to wonder if the effect is worse than I understand.

I got this one on Ebay (12v DC Liquid Water Cooled Brushless Pump Tank For CPU CO2 Laser Water Cooling) for $16.81 free shipping.  Ordered March 3rd, delivered March 13th.  Seems equal to the stock with a caveat.  The stock coolant return is directed toward a vertical piece of plastic that allows one to know water is actually flowing by sight.  This has unmarked identical in flow and out flow ports that happen to orientated the same as the stock.  In flow and out flow that is.  The in flow tho is below the tank while the stock returns into the tank.  One can't absolutely know water is flowing by sight.  My two C1's are in series.  One pump fails the other will continue to pump to both.

And a US legal system founded on verdicts by a jury of our peers.  What percentage of jailed inmates never saw a jury?  Very high percentage, almost all. 

So, the decentralization model might be the ideal but will profit and pragmatism allow it to be so in the future?

The network needs grease to work.  Okay.  Nobody with sense will mine at a loss.  But explain how the network won't work with only a few large mega farms and a few ASIC manufacturers.  I don't quite see how it can't.

Then you're back to equipment availability.  If manufacturing runs are pre-sold to large farms at a discount avoiding the overhead of dealing with the public, that's what's going to happen.  Look at US industry - how many products are produced to be sold to industry and NOT to the public.  That's not because the public will do harm with the product but that the public is expensive to deal with.

Well if you want to get onto the banks wanting bitcoin dead so their expensive bank transfers are again the way to transfer money....  Banks want bitcoin dead or at least as unpopular as media can make it without seeming obvious.

Was the rise in large Bitcoin mining farms expected?  Those farms were/are expensive.  That they dump their minings to pay off costs would be expected.  That it looks like that action over time drove the value of Bitcoins down might have been unexpected.  Certainly unexpected for those who paid cash for Bitcoins and held on hoping that their scarcity would drive up the price who now own Bitcoins worth only a small fraction of their original cost.

The one positive aspect of Bitcoin value down to mining operating costs and loan payoff is that the value fall has leveled off.  Will this kill a hoped for spring rise into summer?  Don't know.

The large farms realize that the halving early next year means that paying off a new miner this year, after electric, means one must get it up and running ASAP.  A spring rise in Bitcoin value into summer would temp home enthusiasts to buy one last time.  So, maybe that would provoke low Bitcoin value thru to summer.

So, where are we.  Home mining is only marginally profitable.  Small business owners running miners at work are only robbing Peter to pay Paul and it will probably become noticeable eventually.  But the large farms must pay rent and wages that the home miner doesn't - even if the large farms get their mining gear cheaper.  And that Novec ain't cheap.

Payout halves next year.  We've seen that as GH/s/$ decrease, the value of Bitcoin correspondingly decrease.  An optimist might project that when payout halves the value of Bitcoin will double. 

But the large farms dump inefficient mining gear and buy huge lots of the most efficient.  Meanwhile for the home miner, getting the most efficient miners at a reasonable price is now met with delays or unavailability.

I'm expecting that next year when the payout halves, the competition between the large farms for a bigger share of the pie will intensify.  They will have no real incentive to see an effective doubling of Bitcoin value to match the halved payout.  Instead the best will work to drive the Bitcoin value down expecting large marginally profitable farms to quit.

So, home mining will continue until home heating isn't needed in the spring and remain off until it gets cold.  That or lose money.

I could be wrong.

Yes but I made sure I didn't use any restrictive couplings like the air hose quick disconnects.  If all your ports and interconnections have the cross sectional area of the barbs then I don't see why not.  When my second pump arrived I simply put it in series with the two series'd C1's rather than splitting the systems.  Now with each pump after a radiator, each pumping into a C1, I had the pumps mounted on the wall near and above the window mounted radiators.  Interestingly, one can add distilled water while the pumps are on but having made the mistake of one pump a bit lower than the other, with pumps off when the plug is removed from the lower, water flows out.  

Actually I don't have two radiators in the system but rather a radiator and a condenser because of the delay in the radiator arriving from China.  I got a tracking message the radiator arrived this morning at my post office, the order date March 3rd.  Not sure how to use the radiator that arrived today.  Can't put it in series in any balanced way so maybe two PVC manifolds with the two radiators and the condenser between the manifolds.

But yes, if no restrictions in the tubing.

Working with a new C1, I wanted it on another subnet to start so I set up a router, it not having an uplink, so that the C1 wouldn't hash figuring that without hashing it wouldn't get hot.  No water in its heatsinks yet.  I did connect via a laptop and started making the setup changes and it pretty quickly froze.  When I touched one of the coolant ports and found it quite hot I realized even unconnected to the internet those ASICs put out heat enough to trigger shutdown.  The C1 runs fine, no damage.

Got the 'ya got an hour' message from Bitmain.  Sent the BTC from Coinbase 2 minutes later.  Never got a reply, btc is paid, got automated replies to my request for the expired to be updated.

Same here.

How many watt power supply are you using?

For my second C1, I have the pump and radiator fans going to a separate 12vdc supply divorced from the miner's supplies.  You could easily say the heck with the 3 pin connector, cut down a two wire extension cord, splice pump and fans reds to the extension cord lead with the raised ribs and the blacks to the smooth lead then put crimp terminals on the other end and attach to an inexpensive 12 v supply.

When the C1 gets interrupted water cooling it gets hot, current and wattage go way up.  Separate supply at least you're sure.

And when you use the inexpensive extension cords from Walmart, e.g. 6', 16 gauge, about a buck forty each, cut off both ends, pick white over brown extension cord so you can easily mark the ribbed side ends with red magic marker and the smooth lead ends with black.  Hate connectors with a single color for both pos and neg.

And you've tried swapping cooling systems?  Just throwing it out there but I know the disappointment of an iffy miner.  The S3 I got from Florida has not only two sub par hashing boards but last change I tried was the controller board with a good s3 and now that runs 440 rather than its usual 441.  Not a big deal, haven't even put it back, it's just that the miner seemed to be packed with lower quality stuff.  Like one of the inside heatsinks had a stripped screw to start with and the S3 was suppose to be new (but arrived in an opened box from Pines Computer in Florida).  Like some farm gathered iffy components.  And the first S3 which was good had the factory double strip of heatsink compound on each inside heatsink while the open box 'new' S3 had inside heatsinks fully slathered with heatsink compound.

Anything seem improved that would warrant violating if it ain't broke don't fix it?

Okay, it must just be things running slow at Bitmain.  At 1:55 PM Bitmain sent this:

BITMAIN Order Detail
Order ID: 00120150318175510183hkOnq6SO06CD
Date: 2015-03-18 17:55:10
Total: 1.564 BTC
Payment method: Bitcoin Payment
You must make a payment within 1 hour, or your order will be cancelled


So, since my Coinbase payment is timestamped 13:57, I should be good.

Interesting.  I went to buy an S5.  Delayed a bit and had to try again.  Price went up in terms of Bitcoins as the value was dropping.  So, I quickly sent the increased BTC amount from Coinbase and it shows completed.  But, on the Bitmain website the purchase shows expired!

The order shows created at 2015-03-18 17:55:10.0 on Bitmain.  Coinbase shows completed at March 18, 2015 13:57 EDT.

I believe I made the purchase within a couple of minutes of observing the increased price.  

And I've already bought the power supplies.

Anyone had any experience getting a btc refund from Bitmain?  These aren't shipping until March 30 and I expect Bitcoin to take a spring rise - on the other hand buying now and knowing the sale when thru would allow timely preparation.