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Bitcoin Cryptography Broken in 2016

Bitcoin Cryptography Broken in 2016
Category: 
Bitcoin
By 
NCourtois
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Description

The digital signature scheme of bitcoin with SHA256+secp256k1 ECDSA will be broken before 18 December 2016 by cryptography researchers.
The attack should allow to forge digital signatures for at least a proportion of 1/1 million bitcoin users and steal money from them.
It should be done faster than 2^100 point additions total including the time to examine the data.

Decision Logic

The decision will be based on the best attack known in academic cryptography literature.
The result should be disclosed or publicly demonstrated before or on 18 Dec 2016.
It should confirmed by a majority of at least 3 other independent researchers with a PhD in cryptography.
Attacks in which the message was not signed correctly e.g. repeated identical randoms are NOT valid attacks.

CLOSING IN2016-12-18 23:00:00

11:11AM, Dec 19, 2015 UTC

11:00PM, Dec 18, 2016 UTC

11:55PM, Dec 18, 2016 UTC

RESOLVED AT 8:13PM, Dec 22, 2016 UTC

Total Volume: 3.356

This bet has been resolved!

The outcome was "No"

3.35612167 was split between 34 bettors.
YES
Volume:0.285
12.743525
# of Bets:2
NO
Volume:3.071
108.40930036
# of Bets:34

Discussion

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ahentov 9:43PM, Dec 20, 2015 UTC
If you win this contract, would your bitcoin (or anyone elses bitcoin) still be worth anything?
Avalon 2:36AM, Dec 20, 2015 UTC
Fixed the host's logic. 2016 is the year!
Jamphone 6:39PM, Dec 19, 2015 UTC
Haha, I presume he meant 2016?. Betting in bitcoin about this means the "Yes" side has no "winning" outcome.
protus 6:24PM, Dec 19, 2015 UTC
I guess technically I just won the bet? The text in the post says: "will be broken before 1 September 2015 by cryptography researchers."

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