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Author Topic: embedded ascii in the blockchain  (Read 4230 times)
koin
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August 01, 2011, 06:53:16 AM
 #1

http://news.ycombinator.com/item?id=2830084

Quote
Dan Kaminsky figured out a way to embed ascii text into the block chain. I did not try to find out how he did it, but he probably created some transactions that include those strings. If you want to find out more about how he did it, he will give a talk at the Chaois Communications Camp related to Bitcoin.

is there already discussion about this here?

fortunately with most mining done on pools and this being something not in the pool owner's best interest, the frequency of it occuring further should be low.   but how will this be solved?
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JoelKatz
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August 01, 2011, 07:23:07 AM
 #2

Does anyone know which block the ASCII is in?

I am an employee of Ripple.
1Joe1Katzci1rFcsr9HH7SLuHVnDy2aihZ BM-NBM3FRExVJSJJamV9ccgyWvQfratUHgN
theymos
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August 01, 2011, 07:24:40 AM
 #3

This has been known forever. It's not a problem: the block chain stores whatever data and charges the same fee per kB.

1NXYoJ5xU91Jp83XfVMHwwTUyZFK64BoAD
Stephen Gornick
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August 05, 2011, 12:48:29 AM
 #4

Dan addresses this himself here:
 - http://bitcointalk.org/index.php?topic=34458.0

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August 05, 2011, 01:03:51 AM
 #5

Does anyone know which block the ASCII is in?
http://blockexplorer.com/tx/930a2114cdaa86e1fac46d15c74e81c09eee1d4150ff9d48e76cb0697d8e1d72

Own address: 19QkqAza7BHFTuoz9N8UQkryP4E9jHo4N3 - Pywallet support: 1AQDfx22pKGgXnUZFL1e4UKos3QqvRzNh5 - Bitcointalk++ script support: 1Pxeccscj1ygseTdSV1qUqQCanp2B2NMM2
Pywallet: instructions. Encrypted wallet support, export/import keys/addresses, backup wallets, export/import CSV data from/into wallet, merge wallets, delete/import addresses and transactions, recover altcoins sent to bitcoin addresses, sign/verify messages and files with Bitcoin addresses, recover deleted wallets, etc.
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August 05, 2011, 01:15:05 AM
 #6

Thanks, jackjack.

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etotheipi
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August 05, 2011, 03:43:57 AM
 #7

So is there actual information in those TxOuts?  Or was he just destroying coins for fun?  It looks like gibberish to me...

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Tasty Champa
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August 05, 2011, 03:52:48 AM
 #8

running this:

Code:
strings -n 20 ~/.bitcoin/blk0001.dat

gets you this:
Code:
EThe Times 03/Jan/2009 Chancellor on brink of second bailout for banks
z+o>z+o>z+o>z+o>z+o>
z+o>z+o>z+o>z+o>z+o>
z+o>z+o>z+o>z+o>z+o>
z+o>z+o>z+o>z+o>z+o>
z+o>z+o>z+o>z+o>z+o>
z+o>z+o>z+o>z+o>z+o>
=ybegin line=128 siz
e=8776 name=bitcoin.
***2*.+D*/***+***h+E
*/***+***p+R*-***+*,
**+[*,***;***x******
0010/211133246>76556
C<=}9>GDIHGDFFJNXQJL
VMFFRaSVZ[^^^IQcgb\f
KFK\\\\\\\\\\\\\\\\\
\\\\\\\\\\\\\\\\\\\\
+/++++++********+,-.
DPQRST_`abcdmnopqrst
*>{o*>{o*>{o*>{o*>{o
---BEGIN TRIBUTE---
#./BitLen          
:::::::::::::::::::
:::::::.::.::.:.:::
:.: :.' ' ' ' ' : :
:.:'' ,,xiW,"4x, ''
:  ,dWWWXXXXi,4WX,  
' dWWWXXX7"     `X,
 lWWWXX7   __   _ X
:WWWXX7 ,xXX7' "^^X
lWWWX7, _.+,, _.+.,
:WWW7,. `^"-" ,^-'  
 WW",X:        X,  
 "7^^Xl.    _(_x7'  
 l ( :X:       __ _
 `. " XX  ,xxWWWWX7
  )X- "" 4X" .___.  
,W X     :Xi  _,,_  
WW X      4XiyXWWXd
"" ,,      4XWWWWXX
, R7X,       "^447^
R, "4RXk,      _, ,
TWk  "4RXXi,   X',x
lTWk,  "4RRR7' 4 XH
:lWWWk,  ^"     `4  
::TTXWWi,_  Xll :..
=-=-=-=-=-=-=-=-=-=
LEN "rabbi" SASSAMA
     1980-2011      
Len was our friend.
A brilliant mind,  
a kind soul, and    
a devious schemer;  
husband to Meredith
brother to Calvin,  
son to Jim and      
Dana Hartshorn,    
coauthor and        
cofounder and      
Shmoo and so much  
more.  We dedicate  
this silly hack to  
Len, who would have
found it absolutely
hilarious.          
--Dan Kaminsky,    
Travis Goodspeed    
P.S.  My apologies,
BitCoin people.  He
also would have    
LOL'd at BitCoin's  
new dependency upon
   ASCII BERNANKE  
:'::.:::::.:::.::.:
: :.: ' ' ' ' : :':
:.:     _.__    '.:
:   _,^"   "^x,   :
'  x7'        `4,  
 XX7            4XX
 XX              XX
 Xl ,xxx,   ,xxx,XX
( ' _,+o, | ,o+,"  
 4   "-^' X "^-'" 7
 l,     ( ))     ,X
 :Xx,_ ,xXXXxx,_,XX
  4XXiX'-___-`XXXX'
   4XXi,_   _iXX7'  
  , `4XXXXXXXXX^ _,
  Xx,  ""^^^XX7,xX  
W,"4WWx,_ _,XxWWX7'
Xwi, "4WW7""4WW7',W
TXXWw, ^7 Xk 47 ,WH
:TXXXWw,_ "), ,wWT:
::TTXXWWW lXl WWT:  
----END TRIBUTE----

you have to have the full blockchain for it to output, completely.
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August 05, 2011, 04:01:10 AM
 #9

I remember reading in a resurrected thread about how someone could also put a file in it.
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