Irony is that if every miner stopped investing in more miners, then every miner would make a profit.
Tragedy of the commons ...
I think that it's the new miners that's causing the problem. If only we could keep them out of the club ... |
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Payback time would be when min share difficulty on every pool is greater than a UINT32. That's when they can take their crap hardware and shove it ...
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Has anyone tried undervolting these things just like S1s? Or it would be pointless on these chips?
They are already running at half the frequency of the S1 (196 MHz), probably right at the bottom end of the voltage range for the chips. I doubt that there is much more room for significant undervolting. In the config file, there is a lower setting for 193 Mhz. If I got an S2 with a weak power supply I'd probably try this setting first before upgrading the power supply. 1 TH/s makes so little these days that a good $300+ PSU replacement could blow your ROI right out of the water. |
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Concealed handguns are pretty cool, but concealed Shuriken (ninja stars) are WAY cooler.
Can you teach me how to be effective with ninja weapons?
Depending on where you live you may already be able to. For example my Utah permit is a "concealed firearms permit" but my Wisconsin card is a "concealed Carry License". That allows me to carry a variety of weapons including knives, ninja stars, incapacitating chemicals. But I think I'll stick to firearms. Utah is still cool. They were kind enough to issue me a non-resident concealed firearms permit which is valid in something like 30 states. Unfortunately in my own home (New York City  ) I can't even touch a handgun or shuriken. |
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I don't think the user owes anyone anything or is liable if it was an honest mistake. The only way they would be liable financially is if they knowingly stole from or sabotaged the pool, which is unlikely considering the fact that they were also hurt financially.
The corollary to what you said is that they still got paid for performing shoddy work which was worth exactly nothing. That doesn't sound right to me, even if it was an honest mistake. |
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EDIT/CLARIFICATION: The hardware itself has no reason to actually know the result of its hashing outside of diff>=1 (or >=1024 in some newer hardware I believe). It's probably not in the software since *most* ASICs do not use custom software, they use cgminer or bfgminer. So the point in the middle that handles communication between the hardware and the software is the most likely culprit.
Could it be a somebody's botched implementation of a custom stratum proxy? |
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A reasonable encryption strategy is to be able to decrypt with a password of at least 12 (more like 15 - 20) characters for access that lasts a few minutes, or a much longer password (40 characters or more) for access that lasts an hour or two. If we assume that the hacker grabbed a copy of enough information to be able to start an exhaustive search for the password, LBC knows how long we can expect his search to go on before he finds it.
If his search is ever successful, what data will be compromised?
Is there a list of BTC addresses that LBC can provide to miners, asking them to filter out transactions from them until further notice?
A protocol for that kind of lock would be nice. I would honor it if I were mining. Just a simple request "please lock this BTC addy until further notice," signed with the address would do. It could be broadcast in any transaction and thereby get to all miners.
Ahh, of course if it could be unlocked with a signature from the same address, it would be kind of useless. But suppose it had to be unlocked with a signature from the same address that locked it? So the attacker would need that external address' private key too.
Hopefully they used a tiered architecture and kept most of their important data on different servers than the web server. They did say they kept their wallets on a different server, so I would hope that they kept their transactional systems and databases on a separate non-internet facing server as well. The web server is usually the first point of that is attacked, so you shouldn't be keeping anything there except the web programs to render and display the web pages and maybe some transient data. |
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Anyway, these guys are vigilant and have enough security measures to prevent such hacking  Well, they responded quickly enough so that is indeed a good thing. However the social engineering attack against the hosting provider should not have succeeded in the first place. The data may be safe and recoverable, but the 24-hour downtime is still bad for business. |
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One of my customers and I are both now unable to reach the localbitcoins website. There is no info about this on their blog either. Yes, down for me too. Right in the middle of a transaction too. |
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so deliveries are ok from bitmain then, id like to order but if its rising that rubbish...im sure bitmain compensated the buyer though?
Batch 2 packaging was pretty solid, and there is a additional foam liner inside the miner to stop the cards from dislodging and flying around. Still, you can never underestimate the damage that UPS can do. I have been lucky in that I've never received a damaged S2 from Bitmain. |
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We need someone to build a blockchain collider. Then we're in business.
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bitcoin QT can sometimes use upwards of 1 GB of RAM. With some custom settings to limit what gets held in memory, you could get this down to less than 10MB, but it would require a fair bit of work. Whatever work is done must not slow down the speed at which the node works. You would be doing the network a disservice if your node took a long time to validate and relay messages and blocks because of your low memory footprint and under-powered CPU configuration. |
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Mid 50's. I have recently moved it to a different room/circuit and that's when the problem started. But the temps haven't increased.
Interesting, I've never been over 52 o (usually around 50) and my psu is doing fine, perhaps it's the temp that's causing it, I'm not sure what others are running at. With the cutoff at 80 o one would expect it to handle high temps, but maybe the psu is struggling. Also, if you've changed it to a different circuit, I'd expect it to trip at your breaker box, not at the psu if that was the problem. It may be there is a bit more voltage drop on the second circuit. Wouldn't necessarily trip the breaker but might push the PSU -- already being pushed to the limit -- over the edge. If you have a kill-a-watt or multimeter you can measure the voltage at the outlet you are using and see. I'd be a little worried if I saw a voltage drop of more than a few volts. At around 10 Amps if the voltage dropped from 120V to 118V it means that there is 20W of power lost somewhere in the electrical wiring. This 20W goes towards heating up the wires and things can get pretty hot if it is all concentrated one spot (like a bad connection). If you are an electronics hobbyist you'd know how hot a small 20W soldering iron can get. So yeah, if there was a voltage drop that's big enough to affect the PSU I'd stop using that outlet. |
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Hopefully in the near future when mining has become marginally profitable then 20nm hashing chips would be commodity hardware that you can buy in bulk on DigiKey. You can then build your house with electric heaters that hash. You probably won't make a profit but you'd help guaranteed that mining remains decentralized.
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I'm guessing amazon can track how much btc traffic there currently getting through gift cards bought from gyft with btc. When it gets large enough for them to notice they'll take it directly.
Do you think Gyft reports this information to Amazon? I am not so certain about it. Seems like it would be proprietary information to Gyft and they won't gain anything by giving this to Amazon. |
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I think it is fine if some governments were to rule that 51% attacks were illegal. However, I wouldn't want this if we had to give up some freedoms in exchange. For example, if the byproduct of all this legislation was additional regulation requiring me to declare and register all my addresses with the government, then I absolutely don't want it.
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People mostly look at the positives of btc (and there are a lot) but they should keep an open mind to the negatives and realise that btc could be challenged and could be killed, It is possible!
I agree. Absolutely it is possible. And it is foolish to pretend bitcoin is somehow invincible. Those that care about bitcoin should act as a defensive driver would on the highway...looking for potential problems and taking prudent measures to avoid them or solve them before they cause harm. So what would be your suggestions for these prudent measures? |
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What are the current plans for supporting BIP32 hierarchical deterministic wallets? With all the snooping of the blockchain going on this would be a good thing to have (in regards to payout).
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I wonder why your S1s stop hashing. I have 8 S1s myself and I never have that problem with them. They're currently showing 44 days uptime.
I have mine overclocked to 400MHz, running the 20131226 firmware, and receiving their IP address assignments using DHCP.
If you only have one pool configured, I would suggest adding a second pool in case of downtime on the primary.
Same here with my 6 S1's.No down time and I have them mining on GHash pool and use their UK address and then BTC guild for back up. I have one out of a dozen that does this every couple of weeks. When the pool stats reports it dead, I have an external monitoring program that power cycles the S1 through an iBoot switch. This is probably overkill but I had already developed the system for my Batch 1 Avalons and had a bunch of iBoots lying around. |
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Bitcoin is a particle ... a Tachyon to be precise. It travels faster than the speed of light and backwards in time. This is how so many people in this forum are able to predict the future price of Bitcoin.
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