|Subject:||Re: [Taler] Monero|
|Date:||Wed, 9 Nov 2016 12:11:12 +0100|
|User-agent:||Mozilla/5.0 (Windows NT 10.0; WOW64; rv:45.0) Gecko/20100101 Thunderbird/45.4.0|
Just to sum this discussion up, I would ad two exchange systems, that are from my perspective relatively close to the approach of Taler. Both don't have a distributed ledger, but notary server instead (crypto proof of corr. op. in taler terms).
Am 07.11.2016 um 18:51 schrieb Jeff Burdges:
On Mon, 2016-11-07 at 16:22 +0100, Klaus Schleisiek wrote:Did anybody ever look at "Monero" (https://getmonero.org/home), a new crypto currency?There are many issues with blockchain based currencies, especially ones based on proof-of-work. It's plausible one could build a blockchain or whatever on a non-proof-of-work based scheme, including notary based schemes, but that's a deep topic that sounds like a distraction. There are several interesting non-blockchain based schemes, like the work by Tomas Sander and Amnon Ta-Shma that inspired Zerocash, and more recently BOLT by roughly the Zerocash academics. Yet, these do not seem competitive with Taler's for simplicity, correctness, or performance. All require pairing-based crypto that remains unstable. In particular, the zerocash curves BN just went from 128 bits of security to 96 bits of security, so conceivably some mathematicians could break it a bit more, break the system parameters, and mint all the zerocash they wanted. BOLT requires transferring hundreds of kilobytes, greatly reducing anonymity when using Tor. I suppose one could transform this into minutes of computation time per transaction like Zerocash does, but that sounds even more painful. Imho, anyone who wishing to run an anonymous bitcoin transaction system should simply deploy Taler with bitcoin as the currency. Jeff
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