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21
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Bitcoin / Bitcoin Discussion / Re: Careless wallet?
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on: April 10, 2013, 03:42:10 AM
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Thanks for the info bg002h. The transaction received its 6 confirmation and it did appear in my MtGox account. I transferred it back to my wallet using a different address this time...
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22
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Bitcoin / Bitcoin Discussion / Re: Careless wallet
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on: April 10, 2013, 12:13:34 AM
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It is an old address that I used to use for mining. My current wallet file is encrypted with a number of other addresses that I use without issue. I also generally try to keep my computer clean behind a firewall.
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24
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Bitcoin / Bitcoin Discussion / Careless wallet?
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on: April 09, 2013, 10:52:33 PM
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I guess I'll chalk it up to experience at this point. It seems that there might be someone else that had a handle on one of the private keys in an old wallet address of mine. I had transferred 2.29 BTC from an online fund to a wallet address (137XxRSiYRTB8PyGvEjjz5vZsd7oSNbdbE). After it received a confirmation, I end up seeing another transaction I didn't approve of sending those 2.29 BTC over to 1J8KsZqj8qWWUSqH2bmQHTTEm1xdNLY7AZ. Not sure how this managed to happen, though I'm not too happy about it at this point. I've marked the wallet never to be used now. Not really looking for a solution unless anyone knows who or how it may have happened, but it sucks to see bitcoins disappear like that especially at the current valuation...
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26
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Economy / Digital goods / [WTS] 1600 Point XBox Live Code (US Only)
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on: March 23, 2013, 01:05:09 AM
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Hey guys, I just bought a 1600 point XBox live code that I can't use. I'm in Canada and it was US only so I can't redeem. I'm looking to either trade for a valid Canadian code or sell for 0.30 BTC (the amount I paid).
EDIT: Refund was processed by bitcoincodes.com unexpectedly. Good service from those guys.
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28
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Other / Beginners & Help / Re: Need advice on working between exchanges
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on: March 22, 2013, 07:58:26 PM
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Here is a good place to start: http://bitcoinmagazine.com/btc-trader-bitcoin-arbitrage-made-easy/Basically you are wanting to try and arbitrage on the markets. It is easy enough to do it on the BTC end, buy your BTC on bitcoin24 and sell them on MtGox. Question is, do you have the time to get money onto BTC24 before someone else tries to arbitrage a more significant amount? Trying to arbitrage on the fiat currency side of things has always been the more difficult option as the main options tend to be limited to how you are able to get fiat currency out of one exchange, let alone directly to another. This means that methods are exchange specific.
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29
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Economy / Service Announcements / Re: 1st Bitcoin Gift card :)
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on: March 22, 2013, 03:49:17 PM
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I notice these have dollar denominations on them. Does this mean that the cards are for gifting fiat currency as opposed to bitcoin, or is this more of a novelty? I would imagine that a gift card would have a private key and/QR code on the back for the amount of bitcoins noted on the front.
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36
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Bitcoin / Bitcoin Technical Support / Importing bitcoins from private key
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on: November 04, 2012, 02:31:40 AM
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I am having a weird issue that has been lingering for a while but I'm just now trying to get a handle on it. I had an old version of the bitcoin software installed on another computer and the bitcoin address in use was on that system. When I upgraded the bitcoin app, the wallet could no longer be read and would crash the app. I've since backed up the wallet.dat file and have now dumped all the keys from it to find the private key associated with one of the addresses. It was an address that Slush had sent bitcoins to because I hadn't changed the sending address yet, so now I have bitcoins lost in the etherverse (or whatever the hell you want to call it.
The wallet address was 1BVj9obg3TDPHLxYYP31nZBZBtgrdTBfkS, so when I used pywallet to dump the wallet contents, I found the wallet address on an "addr" line, but 2 lines down was the private key "5J4K........" on the "sec" line.
First off, is this the private key associated with that bitcoin address? Second, how do I get the coins back from it? I copied the key into the bitcoin debug using 'importprivkey 5J4K.......... OldWallet", and it did import, but when it did, I don't have bitcoins from the address, and there seems to be a new public address associated with it.
Any ideas?
UPDATE: I just took the pywallet output and threw it into a blockchain wallet. I seem to have my coins back now.
UPDATE 2: I seem to not quite have my coins back. Even after importing the pywallet dump and having the blockchain wallet see the available funds, when I try and send them to my new wallet, it is asking for the private address. When I copy what I assume is the private address, it says that it is a watch only address, so I can't send. I guess I'm stuck again.
Final UPDATE: I ran the old wallet through Gavins bitcointools and just output an updated wallet using fixwallet.py. I took the fixed wallet, renamed the current wallet and brought it in. Seems to have worked out, and I was able to send all its contents where I wanted it sent.
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37
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Other / Beginners & Help / Re: My initial Radeon HD 7970 mining benchmarks
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on: January 26, 2012, 06:33:18 AM
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2 x Sapphire Radeon 7970 Corsair 750W PSU
I'm guessing that a slightly higher rated power supply with better efficiency might be called for on this one.
No shit. Corsairs are rated at continuous wattage, and 7970s use 250w each at stock, and you shouldn't exceed 90% of that 750, and you're doing 750-790 at the wall? Holy crap dude. Go buy one of these: http://ur1.ca/7sqrzKeep in mind that the draw from the wall will be about 20% or more greater than the DC load on the PSU. That 750W number is what it is capable of delivering in DC. At 750W at the wall, the PSU may only be delivering around 600W to the hardware (more if the efficiency is better).
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38
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Other / Beginners & Help / Re: My initial Radeon HD 7970 mining benchmarks
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on: January 26, 2012, 04:23:31 AM
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Just wanted to chime in on this. I just picked up a pair of Sapphire Radeon 7970 GPUs. I've overclocked them to 1125MHz. I'm using Diablo Miner for this run. My hash rate ranges between 1335 and 1340 MHash/s. Note that this is with dual GPU.
EDIT: I'll try and get power figures soon. I have a Kill-a-watt, I just gotta find it.
EDIT 2:
System Specifications:
Intel Core I7 960 @ 3.2 GHz 24 GB DDR3-1600 2 x Sapphire Radeon 7970 Corsair 750W PSU WD 2TB Black HDD
Power Consumption in Watts w/ (MHash/s):
Idle: ~130W (0 MHash/s) 2 x 925 MHz: ~670W to ~680W (1104 MHash/s) - Power use increases as temps increase 2 x 1125 MHz: ~750W to ~790W (1345 MHash/s) - Power use increases as temps increase Idle (with OC): ~130W (0 MHash/s)
I'm guessing that a slightly higher rated power supply with better efficiency might be called for on this one.
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