Quote from: jehst on June 09, 2015, 11:49:33 AM

Gregory Maxwell is working on something called "Confidential Transactions" which will add privacy to bitcoin using "Pederson commitments" (proposed by Adam Back in 2013).

https://people.xiph.org/~greg/confidential_values.txt

Everyone should keep an eye on this.

And comment on this:

Quote from: iCEBREAKER on June 09, 2015, 01:46:36 PM

Quote from: Mixles on June 09, 2015, 11:51:26 AM

Quote from: TPTB_need_war on June 09, 2015, 09:39:53 AM

Quote from: iCEBREAKER on June 09, 2015, 09:32:12 AM

https://people.xiph.org/~greg/confidential_values.txt

I remember watching Adam Back's talk about this concept when he was in Israel at a meeting I think sponsored by Meni Rosenfeld.

Request for comments

http://voxelsoft.com/dev/sumcoin.pdf

Quote

Abstract
Sumcoin is peer-to-peer electronic cash where transaction amounts are
only visible to the sender and receiver. In each transaction, the output
amounts are encrypted with the public keys of the respective receivers.
Only the transaction fee is publicly revealed, to allow miners to prioritise
transactions. A homomorphic commitment for each transaction proves
that the sum of the transaction inputs matches the sum of its outputs.
A short Non-Interactive Zero-Knowledge Proof (NIZKP) for each out-
put also convinces all veriers that the sum does not over ow. Address
construction includes an additional public view key to allow senders to
encrypt output values. This approach practically resolves a core privacy
issue in Bitcoin[1], but without overwhelming implementation complexity.
The required commitments are an order of magnitude smaller than those
initially proposed for Condential Transactions[2].

In addition to standing on its own, Sumcoin can be implemented as a sidechain[42]
or integrated into the Monero (or Bitcoin) protocol as a hard fork with a new
transaction version. Unspent transaction pruning[43] is possible in Sumcoin

CT and Anon MiniChain in one coin? Impressive tech and elegant implementation! Do want. Cool

If the Monero folk decide to put Sumcoin under their hood, would you help the core devs with integration?