Zerocoin: Anonymous Distributed E-Cash from Bitcoin

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Sukrim:
Quote from: ByteCoin on April 12, 2013, 11:33:30 PM

This is the first thing written about Bitcoin that's been worth reading in quite a while.

ByteCoin

http://jheusser.github.io/2013/02/03/satcoin.html is also an interesting read, even though it might not help much with actual Bitcoin development.

I also lover this paper here though, great that people start thinking of new ways to make Bitcoin useful for some special purposes!

marcus_of_augustus:
Important work. Also if bitcoin does not adopt a robust privacy strategy it risks another alt-coin will gain a competitive first mover advantage for what I consider to be an extremely desirable (marketable) property for monetary instruments.

grondilu:
Seems complicated, but also looks like serious work. I will need some time to understand it.

It seems to me they overestimate the need for full anonymity, though.

Luckybit:
Quote from: runeks on April 12, 2013, 10:41:23 PM

Let's discuss this paper: http://spar.isi.jhu.edu/~mgreen/ZerocoinOakland.pdf

What are your thoughts on this? I don't understand a lot of the technical stuff in the paper, so I'm interested in hearing your opinions.

Quote

Abstract—Bitcoin is the ﬁrst e-cash system to see widespread
adoption. While Bitcoin offers the potential for new types of
ﬁnancial interaction, it has signiﬁcant limitations regarding
privacy. Speciﬁcally, because the Bitcoin transaction log is
completely public, users’ privacy is protected only through the
use of pseudonyms. In this paper we propose Zerocoin, a
cryptographic extension to Bitcoin that augments the protocol
to allow for fully anonymous currency transactions. Our system
uses standard cryptographic assumptions and does not introduce
new trusted parties or otherwise change the security model of
Bitcoin. We detail Zerocoin’s cryptographic construction, its
integration into Bitcoin, and examine its performance both in
terms of computation and impact on the Bitcoin protocol.

This already exists, it's reinventing the wheel.

zakoliverz:
Not sure how cryptocurrency is any less legitimate than actual cash, the only real difference is that it's not centralized and inflatable like a government made currency.

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