Abstract
We identify several blockchain analysis attacks
available to degrade the
untraceability of the CryptoNote 2.0 protocol. We analyze possible solutions,
discuss the relative merits and drawbakcs to those solutions, and recommend
improvements to the Monero protocol that will hopefully provide long-term
resistance of the cryptocurrency against blockchain analysis. Our recommended
improvements to Monero include a protocol-level network-wide minimum mix-in
policy of n = 2 foreign outputs per ring signature, a protocol-level increase of this
value to n = 4 after two years, and a wallet-level default value of n = 4 in the
interim. We also recommend a torrent-style method of sending Monero output.
We also discuss a non-uniform, age-dependent mix-in selection method to
mitigate the other forms of blockchain analysis identified herein, but we make no
formal recommendations on implementation for a variety of reasons. The
ramifications following these improvements are also discussed in some detail.
This research bulletin has not undergone peer review, and reflects only the
results of internal investigation.OUCH ring signature ! CryptoNote Danger - BTC-SDC ShadowCash - ShadowSend (the anonymous payment system) is currently under peer review by a very well-respected German cryptographer. This will satisfy anybody who remains unconvinced about Shadow 's empowering technology.
Danger - BTC-XMR Monero
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. You will be surprised as to the solution found. We should also turn off the market tickers on the wallets . Cryptsy is a non functioning wallet and this is having a detrimental affect overall price which is being wrongly compared across the board.
