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1261  Bitcoin / Pools / Re: [REQUEST] TO ALL POOL OPS on: September 11, 2012, 08:19:02 AM
  • *SMPPS are not hoppable at all.
  • *SMPPS has zero maturity time
  • *SMPPS has lower instability than PPS (which should be the most unstable)
Why didn't you bother to read the definition of the terms?

"Maturity time" means the time until the reward is received. If an SMPPS pool has a very negative buffer, it will take a long time for miners to get the reward for current mining.

"Hoppable" means that some times are more attractive to mine than others (considering all metrics, not just expected reward). In an SMPPS pool it is more attractive to mine when the buffer is positive due to having no maturity time in this scenario.

"Instability" includes the severity of a collapse. If a PPS pool collapses nothing happens. If an SMPPS pool collapses miners can lose a lot of money.
1262  Bitcoin / Mining / Re: Question about pooled mining and transaction fees on: September 10, 2012, 08:31:26 PM
Some pools forward tx fees, most keep it.

Currently tx fees revolve around 0.05 BTC which is 0.1%, I don't think they're something to worry about now. They definitely will be in the future.
1263  Economy / Service Discussion / Re: is there a n00b guide to GLBSE anywhere? on: September 10, 2012, 07:39:56 PM
do i understand correctly that facebook is a requirement to have a glbse account?
Of course not. But if you issue an asset, if you've verified a facebook account with Nefario the asset page will state so.
1264  Economy / Securities / Re: [GLBSE] POLY - Persistent BTC/USD margin trading emulation on: September 09, 2012, 04:48:20 PM
All POLY bonds have been recalled*. The Mtgox last price at the time was 10.92630 BTC; 428 POLY.10.1 bonds were bought back for 1.2*(10.92630/10) = 1.311156 BTC each for a total of 561.174768 BTC, and there were no outstanding POLY.10.-2 bonds. POLY is discontinued until further notice.

I still believe POLY is a viable model for a much-needed instrument and this was not an easy decision. Some of the contributing factors were:
1. Making POLY successful would require more work than I am currently able to allocate to it. This is exacerbated by the fact that GLBSE is lacking some of the features that could have made it easier.
2. The demand was mostly for the long bonds, which shorten my position; I had a need for this when I started, but I currently do not.
3. Due to various recent events I want to minimize my liabilities.

Thanks to investors and other supporters.


* (except for one account with 28 bonds which had a problem and Nefario says he's working on it.)
1265  Economy / Service Discussion / Re: is there a n00b guide to GLBSE anywhere? on: September 09, 2012, 03:56:38 PM
Well Nefario said he'll be more selective with new IPOs so you may want to familiarize yourself with GLBSE as a user before going there.

I don't think there's a guide but there isn't that much to it. You put bitcoins in, buy assets by placing bids or executing asks, get dividends, and as needed sell assets and/or take bitcoins out. If you have specific questions I guess you could ask here.
1266  Bitcoin / Pools / Re: Double geometric method: Hopping-proof, low-variance reward system on: September 09, 2012, 02:22:12 PM
What changes should be made to the DGM calculation in the presence of miners that are mining at different difficulty levels? For example, a pool that dynamically adjusts difficulty based on the users hashrate, or one that allows the user to select their own target value?
It's more or less the same, but instead of p=1/D you should use throughout p=d/D, where d is the difficulty of the current share submitted.
1267  Bitcoin / Bitcoin Discussion / Re: theft protection by introducing "safe" accounts on: September 09, 2012, 02:20:53 PM
would it be possible to say: from this address ONLY transfers to another address are allowed?

the "other address" could be on a different server which rechecks if its a valid withdraw request.

that way the thief has to hack the database too and cannot compromise the the "other addresses"-privkey.
This doesn't do much. If address A can only be spent to address B then coins sent to address A are like coins sent to address B. The only difference is that if B is compromised and A is intact, the original owner can hold the coins ransom when negotiating with the thief.
1268  Bitcoin / Bitcoin Discussion / Re: theft protection by introducing "safe" accounts on: September 08, 2012, 07:52:17 PM
Can You require now that bitcoins in one account require also the signature of another [or 2 signatures] to be sent ?
[this would also help if 2 wallets are needed to send BTC].
Yes, you can have an address that requires signatures from two separate keys. But it's not fully supported in current software.
1269  Bitcoin / Bitcoin Discussion / Re: theft protection by introducing "safe" accounts on: September 08, 2012, 06:18:28 PM
Perfect, this would be sufficient for me. Any plans to introduce this?
... I am sure the community would love this and trust more services that claim to have introduced this mechanism.
I doubt it will be done soon. It's a big change and its usefulness will be limited by the advent of multi-signature transactions, which can be used for much better security than the current standards.

The main reason for most hacks we hear about is either malice or negligence, not lack of technical means.
1270  Bitcoin / Bitcoin Discussion / Re: theft protection by introducing "safe" accounts on: September 08, 2012, 06:07:16 PM
Something like this was discussed, and the bottom line is that in principle this can work, if you replace "aborted" with "redirected to a predetermined address". The predetermined address could be for example where the coins came from, or maybe something with EC math, etc. .

Let's say the safe address A is associated with a fallback address B. A transaction spending from A is only considered confirmed after 144 blocks. If there are not yet 144 blocks, and there is a transaction double-spending this with B (but no other address) as the target, it takes priority over the previous transaction.

So you could keep A in a cold wallet and B in a frozen wallet which is essentially never used. If you need to spend the coins from A you'll have to wait a day; but if someone steals your key and tries to spend the coins, you have a day to notice this and broadcast a transaction that overrides it and redirects the coin to the still secure address B.
1271  Economy / Securities / Re: [GLBSE] BDT - 3% weekly interest bond, backed by Bitdaytrade on: September 08, 2012, 05:59:08 PM
No coupons this Friday. Any news would be much appreciated - thanks Meni!
Alberto says he will pay by Monday or Tuesday.
1272  Economy / Long-term offers / Re: High-interest, low-risk 'investments' are like perpetual motion machines on: September 07, 2012, 08:56:15 AM
The depositors could be wrong and the underlying investment opportunities may not actually be as profitable as they think. But as long as the depositor is honest and responsible, this is the depositor's problem, not the lender's.

You are confusing the terms. When you use the term depositor you are confusing the lender with the borrower. Call it borrower and lender instead, that will make it easier for you.

The term depositor is in fact misleading since these schemes are not banks, the few that are not ponzi schemes are lending "institutions" or middle men. Some of them might want to pretend they are (fractional reserve) banks but they are in fact not. A bank's primary function is to keep the clients' money safe against theft and at the same time have the money immediately avaiable on request. Nobody can say that about any of these businesses, and the bitcoin world has little use for banks.

Quote
de·pos·it [dih-poz-it]
verb (used with object)
1. to place for safekeeping or in trust, especially in a bank account: He deposited his paycheck every Friday.

By using the word deposit you help them convince people that the risk is low when in fact the risk is very high.
I can see how I may have used "depositor" to refer to the wrong person, I've edited to "borrower". Whether the term "deposit" itself is appropriate is arguable.
1273  Economy / Long-term offers / Re: High-interest, low-risk 'investments' are like perpetual motion machines on: September 07, 2012, 05:18:47 AM
Can you point out one example of this ever happening in the real world?
Not sure what you mean by "this", but http://www.paydayninja.net/ and http://shorttermloans.net/ offer short-term loans at 25%/mo (and if they still offer it, someone must be taking it), and successful startups commonly give massive returns to early investors. Before Bitcoin there was no easy way to move money around for investments and deposits, which may have been a catalyst for the current lending marketplace.

The borrowers could be wrong and the underlying investment opportunities may not actually be as profitable as they think. But as long as the borrower is honest and responsible, this is the borrower's problem, not the lender's.
1274  Bitcoin / Development & Technical Discussion / Re: Version 0.7.0 release candidate 2 ready for testing on: September 06, 2012, 09:46:46 PM
Is it possible to update the translations?
1275  Economy / Securities / Re: [GLBSE] PureMining: Infinite-term, deterministic mining bond on: September 06, 2012, 07:20:58 PM
Coupon payment summary for August 2012 (total 0.014924034 BTC per bond):
Code:
Block number	Timestamp        	Timestamp (Unix)	Elapsed time	Difficulty	Block reward	Coupon    	Bonds	Total      	Status
196559    Aug 31 2012 15:32:28  1346427148          193066    2440642.60692 50        0.0009208985 16000 14.7343760 Paid
196223    Aug 29 2012 09:54:42  1346234082          192302    2440642.60692 50        0.0009172543 16000 14.6760688 Paid
195887    Aug 27 2012 04:29:40  1346041780          183114    2440642.60692 50        0.0008734288 16000 13.9748608 Paid
195551    Aug 25 2012 01:37:46  1345858666          184893    2190865.97010 50        0.0009824598 16000 15.7193568 Paid
195215    Aug 22 2012 22:16:13  1345673773          173279    2190865.97010 50        0.0009207469 16000 14.7319504 Paid
194879    Aug 20 2012 22:08:14  1345500494          165382    2190865.97010 50        0.0008787849 16000 14.0605584 Paid
194543    Aug 19 2012 00:11:52  1345335112          198727    2190865.97010 50        0.0010559691 16000 16.8955056 Paid
194207    Aug 16 2012 16:59:45  1345136385          178313    2190865.97010 50        0.0009474959 16000 15.1599344 Paid
193871    Aug 14 2012 15:27:52  1344958072          186026    2190865.97010 50        0.0009884802 16000 15.8156832 Paid
193535    Aug 12 2012 11:47:26  1344772046          175491    2036671.08869 50        0.0010030997 16000 16.0495952 Paid
193199    Aug 10 2012 11:02:35  1344596555          174221    2036671.08869 50        0.0009958404 16000 15.9334464 Paid
192863    Aug 08 2012 10:38:54  1344422334          192530    2036671.08869 50        0.0011004939 16000 17.6079024 Paid
192527    Aug 06 2012 05:10:04  1344229804          196130    2036671.08869 50        0.0011210714 16000 17.9371424 Paid
192191    Aug 03 2012 22:41:14  1344033674          182018    2036671.08869 50        0.0010404078 16000 16.6465248 Paid
191855    Aug 01 2012 20:07:36  1343851656          206020    2036671.08869 50        0.0011776023 20000 23.5520460 Paid
1276  Economy / Long-term offers / Re: High-interest, low-risk 'investments' are like perpetual motion machines on: September 06, 2012, 06:06:35 PM
I agree with the general idea that people shouldn't be automatically assumed to be trustworthy, but there's something very fundamental you seem to be missing, and I'm happy for the opportunity to point it out.

Foolproof schemes to make high interest at low risk are the financial world's perpetual motion machines. They do not exist.

Perpetual motion machines may not be scams; there are misguided people who really do believe that they've violated the laws of physics and will prove all of those pesky scientists wrong. I'm sure there are people who truly believe that they've invented foolproof methods of investing lots of money with no risk, too, but I'm equally sure they're delusional.
If someone is taking deposits and offering high interest with low risk, it does not mean he thinks whatever he is doing with the money is low-risk. It means he is willing to absorb the risk, and commit his personal illiquid assets to pay it back if the risk doesn't pan out.

Let's take a simple example. Someone is very sure that the BTC price is going to increase and wants to buy $10K worth of bitcoins. But he doesn't have $10K and can't borrow it with traditional means. He does have a $20K car which he'd like to keep if possible (and which the bank won't accept as collateral), but he can trade it for a $10K car should the worst happen. He expects to sufficiently profit from buying to be willing to borrow at high interest; and he commits to repay by trading his car if he loses.

This whole arrangement is very risky for the borrower (whether he realizes it or not); but if the borrower is trustworthy, it is not risky for the lender.

In practice there are multiple ways to generate high ROI with various risk levels, such as currency speculation, arbitrage, mining, starting new businesses in the emerging Bitcoin economy, short-term loans, or investing with other people who are better equipped to generate ROI than you. By diversifying among various channels the overall risk can be lowered even if every single investment is risky; and by having valuable traditional illiquid assets there is a way to honor one's obligations even if the risk assessments went horribly wrong. In this case a smart investor can profit by accepting high-interest loans with no risk for the lender.

I'd like to especially point out short-term loans as one of the primary revenue streams of some of the big borrowers; many people are willing to pay high interest for such loans. I don't know why they are, but the fact of the matter is that they are. Once again it is the borrower's role to assess and absorb the (relatively high) default risk of these individual loans. This isn't new with Bitcoin, also; p2p loans with 1% daily interest have existed for a while in the traditional economy.

To summarize, I'm not saying any particular borrower is or is not a scammer. I'm saying that given the diversity of investment opportunities, there is nothing fundamentally impossible about high-interest loans with no risk for the lender. The only catch is finding a borrower who can be trusted to be both honest and responsible with his liabilities; and of course, by the time it becomes easy to find one, the supply of time-money will be high enough that his offered rates will not be as high.
1277  Other / Beginners & Help / Re: What Happens To Lost Bitcoins? on: September 06, 2012, 02:39:03 PM
Isn't it theoretically possible to crack the hash of existing bitcoins to "recover" (or rather forge) them?
The odds of that happening are less than the odds that you will die from being struck by lightning after being hit by a meteor which occurred just after you had been bitten by a shark while you stood underneath the curl of an approaching Tsunami -- and all that happening 1,000 times in a row on the same day.
Easy there. There are only 160 bits in an address. I don't know what are the probabilities for these events but let's say lightning is 20 bits, meteor 30, shark 15 and tsunami 20, and that they're all independent - you've already used up 85 bits. Having that happen 1000 times puts you at 85000 bits which is way too much.
Isn't it only 10 more bits to multiply by 1000?

2^10 = 1024

So if the rest of your bit estimates are correct, then it only puts you at 96 bits which isn't nearly enough.
No.

To conjunct with another event with probability 1/1000, that is multiply the odds against by 1000, is to add 10 bits.

To take the given event and to have it happen 1000 times, you take the odds to the 1000th power, meaning multiplying the number of bits by 1000.
1278  Other / Beginners & Help / Re: What Happens To Lost Bitcoins? on: September 06, 2012, 11:58:41 AM
Isn't it theoretically possible to crack the hash of existing bitcoins to "recover" (or rather forge) them?
The odds of that happening are less than the odds that you will die from being struck by lightning after being hit by a meteor which occurred just after you had been bitten by a shark while you stood underneath the curl of an approaching Tsunami -- and all that happening 1,000 times in a row on the same day.
Easy there. There are only 160 bits in an address. I don't know what are the probabilities for these events but let's say lightning is 20 bits, meteor 30, shark 15 and tsunami 20, and that they're all independent - you've already used up 85 bits. Having that happen 1000 times puts you at 85000 bits which is way too much.
1279  Economy / Securities / Re: What's with the buyback clauses in these securities? on: September 05, 2012, 03:53:02 PM
Edit: I understand the reference, not what the OP is trying to say with it.
It was a good analysis. Also, I read your paper regarding the effectiveness of various mining pool payment schemes (also good).
Thanks.
1280  Other / Off-topic / Re: Which is the BEST military rifle? on: September 05, 2012, 11:23:46 AM
Galil. (Chose the related Kalash from the list.)

Not that I understand much about rifles, but spend enough time with one and you develop loyalty.
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