agorise/bsips
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity

References to Elements Project

Browse source
This commit is contained in:
christophersanborn 2018-07-18 11:31:33 -04:00 committed by GitHub
parent 5ab1257b0b
commit 75b47a4748
No known key found for this signature in database
GPG key ID: 4AEE18F83AFDEB23
1 changed files with 4 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

4
bsip-1201.md
View file

@ -11,6 +11,8 @@
Confidential Assets (CA) [[2]](#see-also) extends Confidential Transactions (CT) [[1]](#see-also) to include asset hiding. The BitShares network already understands and validates CT transactions, but is not yet capable of validating CA transactions. The transaction format will need minor to moderate updating and the validation routines will likewise need updating. We propose to either (a) update op-code 39, 49, and 41 to be CA capable, or (b) define new opcodes for CA stealth operations. The latter option probably affords a cleaner upgrade path. The old opcodes should then be disfavored for user wallet use.
Confidential Assets is a new, but not un-tested, technology. The Elements Project [[3]](#see-also) maintains an experimental implementation [[4]](#see-also) of CA as a Bitcoin side chain. The code for that project is MIT-licensed and can help guide the implementation of CA in the BitShares ecosystem.
## Motivation
A user maintains value-blinded balances on the BitShares blockchain as a collection of Pedersen commitments, which are EC curve points that obscure their committed values by adding a secret blinding factor times a generator point. By keeping the blinding factor secret, the user keeps their balance secret. Meanwhile, balances can be transferred, subdivided, or combined, provided the sum of blinding factors for all inputs to a transaction are equal to the sum of blinding factors of all outputs of a transaction. A user wishing to un-blind and "claim" a balance contained in a Pedersen commitment may do so by revealing the blinding factor for that commitment, which then allows the network to verify the committed amount and credit it to a public balance.
@ -93,4 +95,6 @@ This document is placed in the public domain.
[2] Confidential Assets (Poelstra, et. al.) - https://blockstream.com/bitcoin17-final41.pdf
[3] Elements Project - https://elementsproject.org
[4] Elements Project on GitHub - https://github.com/ElementsProject/elements