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1  Bitcoin / Wallet software / Is it possible to extract private key from Trust Wallet on: September 18, 2019, 08:56:46 PM
Hey all. Recently I have started to use Trust Wallet. It is quite convenient. Does anybody know how to extract private key from it?
2  Alternate cryptocurrencies / Service Announcements (Altcoins) / How to cancel pending transaction in Metamask on: September 14, 2019, 11:13:27 PM
Hi all!
Today I just discovered that it is possible to cancel pending ETH transaction (due to low GWEI). You just need to send 0 ETH with high GWEI (you can check it on ethgasstation.info) to your own ETH address. If it will not help you can delete metamask and install again.
3  Alternate cryptocurrencies / Service Discussion (Altcoins) / What solutions are required for crypto users from Iran on: September 13, 2019, 07:14:23 PM
Hello everybody.
Due to sanctions of Iran I would like to ask Iranian crypto people:
What crypto/fiat solutions are you required?
What would help you to live easier?
4  Alternate cryptocurrencies / Marketplace (Altcoins) / Seeking Chinese SMM Expert with ICO experience (WeChat, etc) on: September 07, 2017, 09:03:19 AM
Hi, everybody.
We are looking for Chinese SMM active promotion guru with ICO experience and who knows specific of Chinese market.
If you are interested please PM me with your bios and experience.
5  Alternate cryptocurrencies / Altcoin Discussion / Litecoin wallet.dat corrupt on: August 09, 2017, 09:40:48 AM
Hi, guys! If anybody can help me with my problem?
wallet.dat from Litecoin Core was deleted from HDD in late 2015. This year it was restored with using special soft.
But if to replace new one generated in Litecoin Core wallet with restored wallet.dat and to try launch the wallet this message will appear:
wallet.dat corrupt, salvage failed!

Is it possible to extract the private key from this file?
6  Other / CPU/GPU Bitcoin mining hardware / Equipment Damage Collections on: December 07, 2011, 03:27:50 AM
Hi all,

After mining for about 6months, I've had some equipment failure and have learnt some stuff along the way. So I thought I'll start this thread to share some experience.

Damage to ATX connector (12V lines)


This is on an ASUS board. This rig was getting unstable with random reboots, and it I could not figure out what was wrong with it. The burnt marks are not visible if the PSU ATX plug is in place. I only discovered this when I took apart everything to check.

I suspect the male-female pins contacts are loose thus causing arc-ing between the pins. I ran 4 GPUs all direct from the PCIE slots and this may have been too much on the 12V lines?

I've since replaced the ATX connector on the PSU (cut off the pins + a bit of wire and re-pin it).

This board is definitely still working, and I'll try to salvage it with a new female ATX connector. But I tried de-soldering the female connector on the mobo without success. I'll try it again when I'm free.
7  Other / CPU/GPU Bitcoin mining hardware / Replacing ATI 58xx/5970 Ref cards' fan (not a guide) on: October 03, 2011, 02:38:15 AM
Hi guys,

I had 1 5870 and 1 5970 fans making weird noise (bad), so I decided to search for replacement fans, and also to perform some maintenance on the cards.
Other than replacing the fans, I found that some thermal pads were breaking apart, thus I got replacement thermal pads and thermal glue to glue the thermal pads to the heatsink/cover of the cards.

Things I bought:
1. Replacement fans from (http://item.taobao.com/item.htm?id=10330120683) (cheaper source: http://item.taobao.com/item.htm?id=10794821928)
2. Thermal pads from (http://www.dealextreme.com/p/heat-sink-thermal-silicone-paste-10cm-10cm-0-1cm-35819)
3. Thermal glue from (http://www.dealextreme.com/p/fujik-silicone-thermal-glue-50ml-grease-like-4579)

The main problem was getting the replacement fans. These are from China, and they accept various forms of payment that are only available in China, though I think they ship worldwide.
RMB$50 should work out to be about US$8 (back of envelope calculation).

I tried to use Alipay and other forms of payment with my credit card (I'm in asia, not china), and none of my credit cards worked (ok, I only tried 2, as those are the 2 I expose to internet purchases). So I used a concierge service which bought the items on my behalf, paid for it, got it shipped to their office and then they shipped it to me. In the end, I paid about US$12 each including the service charges of the concierge. It took about 3 weeks.

The 3 weeks wait was fine, as the items from Dealextreme took about the same time.

I'm not writing a step-by-step guide here, just to share some information on what I found out.

So here goes the pics:

Ordered 4 replacements




Old (left), New(Right)




Thermal paste/glue




Thermal Pads




Thermal Pads (Parts to replace)



Thermal Pads (longer piece is done)




Remember to glue down the wire here



That's all.
8  Bitcoin / Mining / Silverstone concept TJ12 on: June 02, 2011, 08:16:44 AM

Youtube video....mentioned at 1:36. Check out his smirk...

http://www.youtube.com/watch?v=ygokobAfAe4&feature=player_embedded

What is that?







9  Bitcoin / Mining / *BTC Poolwatch* - no new dev for now on: May 29, 2011, 11:07:56 PM

Hi all,

I will be stopping all development and changes for a while (8 months at least).

I've been diagnosed with Acute Myeloid Leukemia, and have just gone through 1st round of chemo therapy.

I'll be going for another round of chemo therapy, and than bone marrow transplant (thank god my sis is a match), and i'll take at least 6 months to recover from the transplant.

At this point, btc-poolwatch.com will have to take a backseat. I'll keep the service running.

I'll be back.

Regards,
Koo

Hi guys,

This is something that I've been working on to solve the pain of having to check multiple pools. (Currently supports 18 different pools)

www.btc-poolwatch.com

Sample:
1. If you only entered 2 API tokens, you will see only 2 pools information.
2. Green means the miner is alive. Red means it's not responding.



One step process to get this working. Enter your API key from the pool website.



What does it do?
This will be an aggregator for information from all the mining pools you have signed up. If you want to check on the statuses, you only have to hit one webpage, instead of visiting all the different websites.

How is the info gathered?
The mining pools would have json information which the pool will provide you with a "API Key" or "API Token". API stands for Application Programming Interface. Basically you will enter this key once and subsequent requests to the server will use this key to pull the information.

Is this safe? Should I pass other people this key?
This API key can only be used to pull data. It cannot be used to login to your account, or change information on your account.

Why is there no login/password?
The API keys are stored as cookies on your browser. This simplifies the login/forgot password process. Thus if you clear cookies on your browser, you will have to fill up the API tokens again.


Features
1. Currently supports the following pools
  • ArsBitcoin
  • BitClockers
  • Bitcoin Pool
  • Bitpit
  • BTC Guild
  • BTC Mine
  • Deepbit
  • Eclipse Mining Consortium
  • Eligius
  • Mainframe Mining Cooperative
  • Mineco.in
  • Mt. Red
  • NoFeeMining
  • Ozco.in
  • PolMine
  • rfcpool
  • Slush Pool
  • TripleMining

2. Allows multiple tokens for 1 pool.
Just separate each with a comma.

3. Shows pool stats where available.

4. Shows your rewards where available.

5. Auto detects mobile device and display nicely. Sample view on ipod touch



6. A Pools' Stats page displays stats of 14 different pools.



7. Auto refresh the main monitoring page every 5 minutes.

No Registration/Login required! No email and password to lose/get hacked!

To-do
1. Add more pools

Please let me know what you guys think.

Regards,
koo


ps: please be gentle. Tongue
10  Bitcoin / Mining / Checking hashrate on: May 25, 2011, 08:50:49 AM
Hi all,

Just starting mining and this is my first post here. There's a lot of valuable information here that I've used while setting up my rig.

One thing is that most people will say "my 8570 is giving me XXX mHash/s".
Can I know how do you determine this other than staring at the poclbm/guiminer screen? The hash rate will keep changing. Even the information at the mine pool website.

So can I understand that the hashrate is just via eyeballing an estimate? Or am I missing out some log files to get this information?

Secondly, is there a way to see my hashrate across multiple pools other than refreshing the mine pool's website on multiple browser tabs?
(I've registered with a 2 mine pools, just in case one pool goes down)

Thanks in advance!

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