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1261  Bitcoin / Bitcoin Discussion / Re: Legitimate Uses of Bitcoins and the Dark Government on: December 30, 2015, 01:05:25 PM
"Equitable Sharing" program ended.  Very good news:

https://bitcointalk.org/index.php?topic=1004863.msg13399046#msg13399046
1262  Bitcoin / Bitcoin Discussion / Re: BurtW arrested (update: charges dropped!) on: December 30, 2015, 01:04:20 PM
GOOD NEWS TODAY!!!

https://bitcointalk.org/index.php?topic=1004863.msg13399046#msg13399046

1263  Other / Politics & Society / Re: Protect yourself against Civil Asset Forfeiture on: December 30, 2015, 01:03:19 PM
EVEN BETTER NEWS!

Quote
The Department of Justice announced this week that it’s suspending a controversial program that allows local police departments to keep a large portion of assets seized from citizens under federal law and funnel it into their own coffers.
 
The “equitable-sharing” program gives police the option of prosecuting asset forfeiture cases under federal instead of state law. Federal forfeiture policies are more permissive than many state policies, allowing police to keep up to 80 percent of assets they seize – even if the people they took from are never charged with a crime.

http://www.msnbc.com/rachel-maddow-show/justice-department-ends-key-civil-forfeiture-program

http://www.redstate.com/2015/12/27/civil-asset-forfeiture-congress/

http://www.dailykos.com/stories/2015/12/28/1464215/-In-big-news-Very-significant-part-of-the-civil-forfeiture-program-is-shutting-down?detail=email
1264  Bitcoin / Bitcoin Discussion / Re: Bitcoin puzzle transaction ~32 BTC prize to who solves it on: December 29, 2015, 07:05:59 PM
I am comfortable in my use of "never" since it is based on the most fundamental laws of thermodynamics.

At any rate if a computer ever does simply count from 1 to 2256 look dig me up so you can tell me "I told you so".
1265  Bitcoin / Bitcoin Discussion / Re: Bitcoin puzzle transaction ~32 BTC prize to who solves it on: December 29, 2015, 06:08:01 PM
So a version 1 bitcoin address has a security level of 2160, but how to make sure you have a security of 2256? From when on was the version 1 bitcoin address abandoned and we are sure to enjoy increased security?

Maybe I'm understanding this wrong and everybody is using version 1 addresses, but I would rather know for sure I'm using the safest keys possible.

Even though the security of Bitcoin is reduced to "only" 2160 by the selected second hashing algorithm it is actually more secure in other ways due to the selection of two different hashing algorithms in the public key to Bitcoin address step since both algorithms need to be broken in order to break that step.

Every step of the way everything possible was done to ensure that Bitcoin was secure.  For example Bitcoin is one of the only systems in existence that uses the secp256k1 curve instead of the secp256r1 curve that is used by almost everyone else.  But this was a very wise decision in light of recent leaks about the NSA and their underhanded practices with respect to the cryptography they produce or help produce.

secp256r1 was designed by the NSA, secp256k1 was not.
1266  Bitcoin / Bitcoin Discussion / Re: Bitcoin puzzle transaction ~32 BTC prize to who solves it on: December 29, 2015, 05:54:34 PM
With regards to the future, we never know what will be possible tomorrow.

Not exactly true.  With respect to brute forcing a private key we know it will never be possible because we can calculate how much energy it would take for a theoretical best possible computer from a thermodynamics point of view to do the task of just counting from 1 to 2160 or 2256.

Since any possible actual computer will be less efficient than the best possible computer we know it will take any possible actual computer more energy than the theoretical machine - which is already too much energy.

Carefully reread the description next to the picture of the sun that is posted every single time this question is posed.

In your previous thread it was posted here:

https://bitcointalk.org/index.php?topic=1305887.msg13377953#msg13377953
1267  Bitcoin / Bitcoin Discussion / Re: Bitcoin puzzle transaction ~32 BTC prize to who solves it on: December 29, 2015, 05:44:04 PM
After some analysis I believe the underlying sequence is probably random.  It may have been a PRNG instead of a RNG but that would not help us much.  It would be great if we had all 50 actual values to work with.

Code:
  BTC   Actual      Range of Values                        Location
Value  Value       Low                    High            in Range
-----  ----------  -------------------------------------  ---------
0.001  1           0                      1               100.0000%
0.002  3           2                      3               100.0000%
0.003  7           4                      7               100.0000%
0.004  8           8                      15                0.0000%
0.005  21          16                     31               33.3333%
0.006  49          32                     63               54.8387%
0.007  76          64                     127              19.0476%
0.008  224         128                    255              75.5906%
0.009  467         256                    511              82.7451%
0.010  514         512                    1,023             0.3914%
0.011  1,155       1,024                  2,047            12.8055%
0.012  2,683       2,048                  4,095            31.0210%
0.013  5,216       4,096                  8,191            27.3504%
0.014  10,544      8,192                  16,383           28.7144%
0.015  26,867      16,384                 32,767           63.9871%
0.016  51,510      32,768                 65,535           57.1978%
0.017  95,823      65,536                 131,071          46.2150%
0.018  198,669     131,072                262,143          51.5728%
0.019  357,535     262,144                524,287          36.3889%
0.020  863,317     524,288                1,048,575        64.6648%
0.021  1,811,764   1,048,576              2,097,151        72.7833%
0.022  3,007,503   2,097,152              4,194,303        43.4089%
0.023  5,598,802   4,194,304              8,388,607        33.4858%
0.024  14,428,676  8,388,608              16,777,215       72.0032%
0.025              16,777,216             33,554,431
0.026              33,554,432             67,108,863
0.027              67,108,864             134,217,727
0.028              134,217,728            268,435,455
0.029              268,435,456            536,870,911
0.030              536,870,912            1,073,741,823
0.031              1,073,741,824          2,147,483,647
0.032              2,147,483,648          4,294,967,295
0.033              4,294,967,296          8,589,934,591
0.034              8,589,934,592          17,179,869,183
0.035              17,179,869,184         34,359,738,367
0.036              34,359,738,368         68,719,476,735
0.037              68,719,476,736         137,438,953,471
0.038              137,438,953,472        274,877,906,943
0.039              274,877,906,944        549,755,813,887
0.040              549,755,813,888        1,099,511,627,775
0.041              1,099,511,627,776      2,199,023,255,551
0.042              2,199,023,255,552      4,398,046,511,103
0.043              4,398,046,511,104      8,796,093,022,207
0.044              8,796,093,022,208      17,592,186,044,415
0.045              17,592,186,044,416     35,184,372,088,831
0.046              35,184,372,088,832     70,368,744,177,663
0.047              70,368,744,177,664     140,737,488,355,327
0.048              140,737,488,355,328    281,474,976,710,655
0.049              281,474,976,710,656    562,949,953,421,311
0.050              562,949,953,421,312    1,125,899,906,842,620
0.051              1,125,899,906,842,620  2,251,799,813,685,250
0.052              2,251,799,813,685,250  4,503,599,627,370,490
1268  Bitcoin / Bitcoin Discussion / Re: Bitcoin puzzle transaction ~32 BTC prize to who solves it on: December 28, 2015, 08:30:48 PM
The interesting thing is that addresses #1 - #46 were cleaned out in January 2015. Then nothing for many months. Then on Sep 1 2015 #47, #48, #49 and #50 were almost simultaneously cleaned out.
so does that mean someone has cracked the puzzle? and claimed all (or most) of the 32 BTC?
Only 50 of the 256 addresses are claimed 31 BTC remain.
1269  Bitcoin / Bitcoin Discussion / Re: Bitcoin puzzle transaction ~32 BTC prize to who solves it on: December 28, 2015, 07:57:55 PM
Assuming my pattern assumption is correct then the underlying sequence was masked off to create the private keys.

Now if the underlying sequence before masking came from a cryptographically secure random number generator there is no hope of predicting the 51st private key and brute force or random chance in 51 bits is the only chance.

However if the underlying sequence was mathematically generated then maybe the keys are predictable.
1270  Bitcoin / Bitcoin Discussion / Re: Bitcoin puzzle transaction ~32 BTC prize to who solves it on: December 28, 2015, 06:53:40 PM
BEFORE you comment on this thread

1) Carefully READ the thread
2) Think

Then please comment.

We don't need any off topic comments unrelated to the puzzle at hand.
1271  Bitcoin / Bitcoin Discussion / Re: Bitcoin puzzle transaction ~32 BTC prize to who solves it on: December 28, 2015, 06:51:17 PM
I see a pattern but I do not think it will help much.

My conjecture is that the sequence number (the BTC amount) simply states the number of random bits in the private key.

Check it out:

The 0.001 BTC output used a 1 bit key (already claimed obviously)

The 0.002 BTC output used a 2 bit key

The 0.003 BTC output used a 3 bit key

etc...

The 0.019 BTC output used a 19 bit key

So I would claim the next unclaimed output uses a 51 bit key.
1272  Bitcoin / Bitcoin Discussion / Re: brute force on Bitcoin Addresses - Video of the action on: December 28, 2015, 04:04:40 PM
Looks like you have lots of free time, don't you?

But, rather than doing that without any leads, i think you better try to brute-force bitcoin address which created using brain wallet.
In past some people collected some dust at brainwallet.org, they just use common words to did it.

Would be great to see someone can steal someone bitcoin in this way Roll Eyes
Since most people, especially those with paid signatures, don't read entire or even part of a thread before they blurt out a comment or opinion maybe we move the puzzle to a new thread?
1273  Bitcoin / Bitcoin Discussion / Re: brute force on Bitcoin Addresses - Video of the action on: December 28, 2015, 03:59:08 PM
Lets start by what we know:

The BTC values of the outputs (0.001 through 0.256) are obviously the sequence numbers and the private keys are the sequence values.

How many of the sequence values do we already know (have been found by brute force)?  

Is the list in this thread the entire list of known values from the sequence?
1274  Bitcoin / Bitcoin Discussion / Re: brute force on Bitcoin Addresses - Video of the action on: December 28, 2015, 03:52:39 PM
You could have started with.

https://blockchain.info/tx/08389f34c98c606322740c0be6a7125d9860bb8d5cb182c02f98461e5fa6cd15

Does look like someone placed an interesting puzzle in the blockchain for us.

It appears to me to be a game of some sort:  if you crack the sequence you can get the BTC.

instead of.

So just for the fun I created this bot that brute forces Bitcoin addresses.
-snip-


I think the bot found the puzzle.
1275  Bitcoin / Bitcoin Discussion / Re: brute force on Bitcoin Addresses - Video of the action on: December 28, 2015, 03:44:29 PM
https://blockchain.info/tx/08389f34c98c606322740c0be6a7125d9860bb8d5cb182c02f98461e5fa6cd15

Does look like someone placed an interesting puzzle in the blockchain for us.

It appears to me to be a game of some sort:  if you crack the sequence you can get the BTC.

Exactly.

Finally someone that listened to my words.

So, how to crack it?
Easy, figure out the sequence, follow it, take the BTC off the generated addresses as you go along.

OK, so figuring out the sequence may actually be hard, but then if it wasn't hard it would not be worth doing, right?
1276  Bitcoin / Bitcoin Discussion / Re: brute force on Bitcoin Addresses - Video of the action on: December 28, 2015, 03:28:19 PM
https://blockchain.info/tx/08389f34c98c606322740c0be6a7125d9860bb8d5cb182c02f98461e5fa6cd15

Does look like someone placed an interesting puzzle in the blockchain for us.

It appears to me to be a game of some sort:  if you crack the sequence you can get the BTC.
1277  Economy / Service Discussion / Re: Honest BitCoin mixing service on: December 23, 2015, 04:23:31 PM
bitmixer.io is great.

Or, if you are cheap, then just deposit, wait a few days and then withdraw from any number of places:  bitfinex.com, any other exchange, etc.
1278  Bitcoin / Electrum / Re: As soon as I sent money to my Electrum wallet it double spened them? on: December 22, 2015, 08:47:09 PM
I usually take a picture of it with my iphone you think that's how it was stolen?
Starting to smell fishy.
1279  Bitcoin / Electrum / Re: As soon as I sent money to my Electrum wallet it double spened them? on: December 21, 2015, 10:04:00 PM
Where did you get this address:  14qA78ZDPdCt311H7TWgQEppxwHANx2mxd

Or, in other words, how was this address created?

Strange that the thief donated some of the BTC to this organization:

https://rnli.org/howtosupportus/donatenow/Pages/bitcoin.aspx

I also find it strange/interesting that in all the transactions except the last one the thief sent the change back to the original account.
1280  Bitcoin / Bitcoin Technical Support / Re: 0 Confirmations after 3 days - please help on: December 21, 2015, 01:56:24 PM
Support can't give any help rather than "google for how to double spend ..."
I think what they meant by this was to go ahead and send out a transaction identical to the first one but with the proper fees this time.  Once the second transaction, the one with proper fees, is accepted the first transaction will get dropped as the double spend.
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