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So, I've been running the unit pretty much non-stop for the past 9 days, it's working with no problems.
On turbo it gives 1.5 TH/s, but most of the day I run it on silent giving 1.35 TH/s.
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The difficulty is now so high that paying the coupons regularly is no longer worth the trouble, for me and I suspect also for the bondholders. I will therefore move forward with buying back the bonds.
The original buyback clause stated the price will be 120% of the GLBSE highest recent traded price. GLBSE no longer exists so that's irrelevant. However, I've noticed that during the time the bond was traded, it went for about 40% of the ELE (extrapolated lifetime earnings). Therefore I believe a buyback price of 55% of the current ELE is fair.
The formula for calculating the ELE for a 1 MH/s bond is
RemainingUnmintedBTC * Hashrate * SecondsInDay * DaysInTwoWeeks / (2^32 * 2016 * Difficulty) =
8439175 * 1000000 * 86400 * 14 / (4294967296 * 2016 * 5006860589) = 0.0002355
55% of that is 0.1296 mBTC per bond, a total of 2.0173536 BTC.
I intend to go forward with the payout in the next few days. If anyone has a reason why I should not, speak now or forever hold your peace.
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The correct method is as follows.
1. Choose a parameter X, which represents multiples of D to include in the window when difficulty is static. X=2 is a good choice.
2. When a share is submitted, assign to it a score of 1/D, where D is the difficulty at the time the share is submitted.
3. When a block is found, pay (sB)/X for the last share (the one before the winning share), where s is the share's score and B is the block reward. Continue backwards, paying each share based on its score, until you reach a share which brings the total score of the shares counted above X. Pay that share the amount (sB)/(tX) * min (r,t), where r is the score required to bring the total to exactly X and t is the score of the winning share. Don't pay any older shares.
4. If the pool has just started, and a block is found before there are shares totaling a score of X, there will be leftover rewards and it should be decided what to do with them. It doesn't matter much, but I recommend that the operator keeps them (in a macroscopic view, if the pool ever changes, this is compensation for the funds needed to cash participants out). Other options include donating to charity, or distributing among the miners.
How does this (specifically steps 2 & 3) change when a pool fee is involved? Is B simply reduced by the fee amount (e.g. B is only 99% of what it otherwise was in a 1% fee pool)? This will be applied when the payment is calculated. If the fee is f (e.g., 1% fee is f=0.01), the amount to pay for a share will be (1-f)*(sB)/(tX) * min (r,t). |
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I'll run it on silent, I expect that otherwise the neighbors will complain about the noise.
Today is quite hot in Israel... Will be fixed and pushed via OTA firmware upgrade. The miner will able to select quite mode (including PSU fans) That's true, though "Summer is coming". Looking forward to upgrades that will mitigate the problem. |
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So, Guy (Spondoolies-Tech CEO) has just dropped by to deliver my sample SP10 – Dawson unit.
Here are some photos of it in operation, right here in my living room:
Any way to measure the power consumption? I'll try. So, I measured the power consumption and it's about 1.3 KW. Also, by putting it on silent and placing it in a structure I have outside of my home itself, the noise levels seem bearable. Might not work as well for people with less flexible real estate. Its that noisy? Even you leave it outside of the house can you can still hear it? Pretty much. In said arrangement I don't hear it when in the upper floor of the house, which is where I spend most of my time so it looks like it may work after all. Keep in mind that these kind of things depend also on wall thickness, windows etc. I'll run it on silent, I expect that otherwise the neighbors will complain about the noise. |
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So, Guy (Spondoolies-Tech CEO) has just dropped by to deliver my sample SP10 – Dawson unit.
Here are some photos of it in operation, right here in my living room:
Any way to measure the power consumption? I'll try. So, I measured the power consumption and it's about 1.3 KW. Also, by putting it on silent and placing it in a structure I have outside of my home itself, the noise levels seem bearable. Might not work as well for people with less flexible real estate. |
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So, Guy (Spondoolies-Tech CEO) has just dropped by to deliver my sample SP10 – Dawson unit.
Here are some photos of it in operation, right here in my living room:
Any way to measure the power consumption? I'll try. |
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חובה לדווח על כל עסקה מעל 1000 ש"ח.
לא 50,000? |
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So, Guy (Spondoolies-Tech CEO) has just dropped by to deliver my sample SP10 – Dawson unit. Here are some photos of it in operation, right here in my living room:   The first thing to notice is that it's noisy. I heard it would be noisy (pun intended) but thought I could maybe pull it off - and it really is that bad, I'm probably not going to run it at my home. There's a "slient" mode which sacrifices some performance for quiet, but it too doesn't help very much. Basically, to operate it all you have to do is connect it to power and to the LAN, and access its control panel through the browser in any computer on the network. They've developed the software tools to make operating the device easy, bu there are still software and firmware issues to work out. We had to mess with it a bit until we got it working, but it looks like it will be fixed soon.  What is more interesting is the hardware. I've configured it to connect to my account at Eclipse MC. After running it for a few minutes to let Eclipse sample the hashrate, Eclipse reported a hashrate of 1.4 TH/s (Holy-Fire_3 in the image). It fluctuated a bit, probably due to sampling errors, but it seems inline with the advertised specs.  Update: I measured power consumption at about 1.3 KW (the measurement isn't completely precise though). Update 2: I'm told there's some optimization process going on while the device is running. Indeed, after running it for a while the hashrate seems to now fluctuate around 1.5 TH/s. |
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Ask Meni Rosenfeld to post in this thread using his own account.
I'm Meni Rosenfeld and I approve this message  "This message" being that I consult for Spondoolies-tech and have known some of the people involved for about a year. I haven't seen the hardware yet, but hopefully that will be soon. |
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but I hope we'll be very soon able to donate it to them.
Why not send to JW right now? He said he is forwarding to WM. I think this is the way to go. --- no? Tempting, but Wikimedia needs to officially accept Bitcoin donations. Despite Jimmy's position in Wikimedia, in this offer he is acting as a private individual agreeing to donate sent funds to Wikimedia, not much unlike Bitpay's old drive. |
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That's very cool. The thread's subject pledge is too small to bother them with its existence, but I hope we'll be very soon able to donate it to them. (I never did get around to starting the dialogue with them as originally planned... And of course, by now Bitcoin is popular enough that I'm not really needed for this). |
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It doesn't help if N is chosen to be a given multiple of the difficulty at the time a block is found. If the difficulty is about to increase, it is more profitable to mine a short while before. For example, if N is set equal to the difficulty D, a share submitted D shares before the increase will be paid the full expectation in the D-window, and then when difficulty increased it will once again go inside the window and have more expected reward. I am new to learning bitcoin mining, but I don't get your statement above: If N is set equal to D, then on average the window will just cover the round, so on average there will be no overlap. That statement refers specifically to a change in difficulty at a roughly known future time. After the difficulty increases the retrospective window get larger, since it is a number of shares equal to the current difficulty. |
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המחיר החדש הוא 150 ש"ח לכל מי שמשלם בביטקוין.
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הי בוריס, אני רואה באתר שהאירוע יתקיים בשרתון ת"א ולא באייפורט סיטי כפי שפורסם קודם.
אכן, עדכנתי עכשיו כאן בפוסט ובקרוב נעדכן בכל המקומות. כשאני מנסה לשלם (בביטקוין) הסכום הוא 150 ש"ח למרות שאני לא חבר אירגון ביטקוין. להבנתי הסכום אומר להיות 200 ש"ח? אפשר לתקן זאת בבקשה?
יש כרגע בעיות במערכת הגביה, נשתדל למצוא לזה פיתרון בהקדם. ועוד דבר אחד - האם ההרצאות יצולמו בווידאו?
אנו מתכננים שכן. |
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