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481  Economy / Service Discussion / Re: MtGox wires ARE delayed on: June 22, 2013, 03:39:27 PM
WTF ! If the US decides to go after Bitcoin in a big and more overt way then they could disrupt transactions which go nowhere near a US bank.

Whatever makes you think that a US Dollar transfer would go nowhere near a US bank?  For a brief description of how international wire transfers work, see this post on the Bitcoin Foundation's blog:

https://bitcoinfoundation.org/blog/?p=63

It's a fiat currency after all, so it only exists because because the US says it does.  And only US banks (or US branches of foreign banks) have access to the Federal Reserve system.  This isn't unique to the US and the US Dollar, BTW - it's just how fiat currency works.

roy
482  Bitcoin / Hardware / Re: [Work in progess] Burnins Avalon Chip to mining board service on: June 16, 2013, 11:03:40 AM
# 10/20 Avalon chip module - 2.82/5.56 Ghash/s nominal speed

It's been low-level bugging me for a while why the 20 chip board is not spec'd to be exactly twice the speed of the 10 chip board.  It just struck me today - is it a typo?

2.28/5.56 Gh/s would make perfect sense...

roy
483  Bitcoin / Mining software (miners) / Re: CGMINER ASIC FPGA GPU overc monit fanspd RPC linux/win/osx/mip/r-pi 3.2.1 on: June 13, 2013, 09:16:49 PM
I just installed cgminer on a little eeePC netbook

Hey, I run cgminer on an original EEEPC 701 running Ubuntu.  Works just fine...

roy
484  Economy / Speculation / Re: Was there a Serious event causing current drop? on: June 09, 2013, 08:52:41 PM
I was happy keeping money in Gox for awhile, and had a bunch of orders set up. But then I started getting nervous about the U.S. or Japan shutting Gox down (smarter people than me convinced me that was a possibility). If money transfers took hours or less, so I could buy and get the BTC out, I might think it worth the risk. But with it taking often a couple of business days to transfer money, I'm too nervous to put much into Gox now (with 20/20 hindsight, I wish I would have kept a little cash there to buy on this recent dip).

I also can't help but wonder, since Gox now seems to be in the U.S. government's line of fire, are all U.S. Banks still willing to keep wiring funds there?

True... I don't keep any funds in exchanges, which means I can't trade - but then I'm not much of a trader.  I prefer to just buy and hold, so Gox and wire transfers work for me.

roy
485  Economy / Speculation / Re: Was there a Serious event causing current drop? on: June 09, 2013, 08:34:30 PM
most of the channels for buying have been taken out!

Get verified on Gox.  Pay by wire transfer.  Or for smaller amounts, if you're in Europe, and prepared to take the risk of going via Gox's Polish account, pay be SEPA.

Yeah, OK, if you're not in Europe you don't have the SEPA option, but really, I don't see what the problem is.   For people investing in BTC they can probably live with the fees.  Sure, the bank fees aren't much use for people who only want to buy a few dollars worth to spend, and we need better options... but the people buying a few dollars don't have any affect on the price.

roy
486  Bitcoin / Bitcoin Discussion / Re: British pubs accepting bitcoin. on: June 08, 2013, 08:29:22 PM
They display or print out a QR code for you to send funds to.  Doesn't really matter how you do it, as long as the transaction is broadcast immediately.  They say it worked well with the Android Bitcoin Wallet in their tests.

http://www.individualpubs.co.uk/bitcoin.html
487  Bitcoin / Group buys / Re: [Group Buy] Avalon ASIC Chips (SebastianJu) Batch 3: 7489 ASICs gone 27489 sold on: May 22, 2013, 10:24:33 PM
Regarding EMS... i used it judging from the experiences of avalon miner receivers. If its better to use DHL then ill try to change this.

Personally I trust couriers like DHL or Fedex above EMS - but that's not based on any particular rational evidence, I'll admit - just gut feeling.  (And I have *zero* knowledge about shipping to/from countries outside of Western Europe and North America)

EMS is the Express Mail Service - a cooperative owned by national postal services.  The normal process would be that the package will be handled by the sending country's postal service, then handed over to the EMS cooperative for internaional shipment, and finally handed over to the national postal service in the destination country.

With a service like DHL you'd normally expect the package would remain with DHL from collection to delivery (although in China, who knows).

Since EMS shipments actually involve three organisations (EMS plus two national postal services) it will depend to a large part on how good (or bad) the national postal services are in sending and receiving countries; so Avalon EMS experiences may well vary widely depending on the country of the recipient.

roy
488  Bitcoin / Development & Technical Discussion / Re: How do I have multiple wallets, with one computer? on: May 04, 2013, 06:03:09 PM
Armory supports multiple wallets (indeed, this is a pretty common use case - one online wallet, and one watching-only wallet for cold storage).

roy
489  Economy / Economics / Re: To put things in some kind of perspective... on: April 20, 2013, 09:35:32 AM
See I said said BTC was stable at $120 :-)  It's just that it's stable in a trading range of $50-$140 LOL

roy
490  Economy / Economics / Re: To put things in some kind of perspective... on: April 14, 2013, 04:38:36 PM
True, and I'll avoid getting into speculating about price, beyond saying that I accept I may well be being over optimistic about the short term price.

Bitcoin itself is still experimental.  The supporting infrastructure is still nascent.  So yes, it's ultimately all speculation.  Most of Bitcoin's current value (if it has value - and I believe it has) comes not from the current utility of Bitcoin, but from the possibility/probability that Bitcoin will become a significant component of the global payments infrastructure years from now.

It's a speculative bet that Bitcoin will succeed.  I happen to think that there is a reasonable chance that it will, but you're right, it's speculation.  We probably won't get true price stability until Bitcoin has truly succeeded.

roy
491  Economy / Economics / Re: To put things in some kind of perspective... on: April 13, 2013, 10:26:03 PM
Ok, you were right.  I clearly spoke too soon Smiley

Ok, looks like we're still broadly in the $100-$120 trading range, with brief excursions outside it.  I was perhaps a bit premature in seeing $115 as a new stable price though.
492  Economy / Economics / Re: To put things in some kind of perspective... on: April 13, 2013, 09:51:59 PM
Ok, you were right.  I clearly spoke too soon Smiley

roy
493  Economy / Economics / Re: To put things in some kind of perspective... on: April 13, 2013, 02:54:10 PM
The Bitcoin price seems to have stabilized

Stalibized?  Stabilized???  Are you fcking insane?

Well, it's all relative, but it's been trading in the range $100-120 for the last 14 hours or so, and tending towards the top end of that range ($115-120) in recent hours; and volume has settled down to more manageable levels, too.  That's certainly relatively stable compared to the wild swings we've seen over the last few days.  Market depth also looks much healthier.

Of course, none of us know what the future will bring, but things seem to be settling down, IMO.

roy

[EDIT: I'm basing my analysis on Mt.Gox prices, as displayed by bitcoincharts.com]
494  Economy / Economics / To put things in some kind of perspective... on: April 13, 2013, 12:44:10 PM
The Bitcoin price seems to have stabilized around $115-120.  Assuming this price holds, then this 4-day correction has only given back the previous 7 days' gains. Think about this - Bitcoin is currently still up on the month of April.

If you consider the 7 day mini-bubble that lasted from 3rd-9th April to be an aberration, then we are pretty much where we should be if you just extend the late-March trendline.  Sure, people who managed to call the top will be sitting on a nice profit (and people who bought into the mini-bubble will be nursing heavy losses) but otherwise I suggest you just erase the last 11 days from your mind.

Imagine we're back at 2nd April, and Bitcoin has just notched up another new high just shy of $120.  What's changed since then?  Nothing much, as far as I can see...  I imagine we'll get back to $260 one day.  But this time we'll have to go the long way round.

I think this is really a very positive sign, that even after this manic price action we are still just back on the trendline.  This was a correction, not a crash; people still have faith in Bitcoin's long term value, it would appear...

[Edited slightly]

roy

495  Economy / Economics / POLL: Cyprus: Cause of Bitcoin price rise or just coincidence? on: April 07, 2013, 09:26:24 PM
With mainstream media coverage of Bitcoin pretty universally crediting the rise in value of Bitcoin to the crisis in Cyprus, I'm interested to know what Bitcoiners think?   Is it a primary factor in the recent appreciation of the value of BTC, or just a random coincidence that has been picked up by the media and assumed the status of fact?

roy
496  Bitcoin / Development & Technical Discussion / Re: [ANN] M-of-N "Fragmented Backups" now in Armory (command-line only) on: April 04, 2013, 08:08:39 PM
For simplicity, users can use the alternate Ubuntu install CD, which has an option for encrypted LVM, and includes encrypting swap.  It encrypts everything but the /boot partition.
Exactly what I used to install my offline machine :-)

Quote
As for NTFS journaling, I actually have no idea.  I don't want to gamble on it. But I do know that FAT32 will have the desired behavior.
As does ext3/ext4 with data=ordered, of course, but I assume we were talking about Windows - at least, I assume you're not advocating the use of FAT32 on Linux systems :-P

roy
497  Bitcoin / Development & Technical Discussion / Re: [ANN] M-of-N "Fragmented Backups" now in Armory (command-line only) on: April 03, 2013, 11:38:37 PM
No, the best I've got is a tutorial for after the system is setup.  I'm actually working on a kind of "Best Practices" guide.  FDE is part of it.  If you don't have FDE, the thing to do is use FAT32 partitions so that you can effectively shred files. 

Interesting comment.  I was always under the impression that NTFS did data journalling, which of course makes secure deletion problematic (particularly given a very large default journal size).  But all the references I can find now suggest NTFS only does metadata journalling, at least by default.  Did this change at some point, do you know?  Or is there some other reason why secure deletion isn't possible under NTFS that I'm missing?

Also, if you have the RAM for it, you might want to consider not having a swap partition/pagefile.

roy
498  Bitcoin / Development & Technical Discussion / Re: [ANN] M-of-N "Fragmented Backups" now in Armory (command-line only) on: April 03, 2013, 11:26:15 PM

It's a good observation.  I made the same observation myself, when I actually applied it.  The problem is, there's only so much I can do with a command line script.  This was intended to be a stop-gap measure until I get the new wallets integrated.  I will come up with a way to avoid writing them to disk.

What I will probably do in the future, with all backup types, is have them print/save encrypted, and you are given a 15-character encryption key to write down and keep with it.  It could be disabled, but it would offer a way to print/save the data without worrying about the device onto which the backup goes.

Thanks for the feedback.

Actually, what I'll probably do - on further thought - is simply run the script with the current directory being in a ramfs filesystem :-)

But I don't know if things are quite as straightforward for Windows users - and it would be good to make it hard for people to shoot themselves in the foot.  ETA: although I fully realise this is a stop-gap - and a very welcome one too!  Thank you again!

Incidentally, do you document any guidelines for setting up an offline system?  If you don't already I'd suggest you should recommend FDE as a mitigation for private keys getting written to swap - particularly on Windows which AIUI doesn't have a fully reliable mechanism for locking pages in RAM.

roy
499  Bitcoin / Development & Technical Discussion / Re: [ANN] M-of-N "Fragmented Backups" now in Armory (command-line only) on: April 03, 2013, 11:11:41 PM
Excellent work.  I've just started using Armory and I will certainly be setting up n-of-m soon.

My one criticism is that frag_wallet.py seems to insist on saving all the fragments in the current directory, immediately and without explicit prompting - which is the moral equivalent of writing the private keys to disk.  Yes, with appropriate care (full disk encryption, secure erase, etc) this can be mitigated - but it's providing a gun for people to shoot themselves in the foot.

If I'm going to go to all this trouble in the first place then I'd much rather save each fragment directly onto its own individual USB stick (which I'd store alongside the corresponding hand-transcribed paper copy of its contents).  My FDE is there to protect me from mistakes, such as unencrypted keys getting written to swap, etc.  But my aim is never to deliberately write keys to hard disk in the first place.

If the unfrag_wallet.py script was similarly modified, then I could still do a test unfrag from my stack of USB sticks, with the unencrypted keys unlikely to ever hit disk.

I'm sure I can easily modify the python scripts to do that when I get round to setting up n-of-m backups, but just my 2 bitcents.

roy
500  Economy / Service Discussion / Re: Mt Gox DDOS? on: April 03, 2013, 10:05:40 PM
Haven't seen this posted elsewhere, but Mt.Gox have confirmed they're under DDos

https://twitter.com/MtGox/status/319563995759652864



Haven't seen this posted elsewhere, but Mt.Gox have confirmed they're under DDos

https://twitter.com/MtGox/status/319563995759652864

Ah, OK, Zooey beat me to it in another thread Smiley

roy
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