Topic: What are CT and CA? (Read 616 times)

CT is much better since it is a solution to improve privacy and specifically designed for BTC. It hides the amount of BTC that are being transacted, only the sender and the receiver of the transaction were known by the public verifier. On the other hand, CA brings a similar level of privacy but these are limited to any type of blockchain asset, like ownership paper, stocks or fiat currency.

Just a follow up question, which one is better? CT or CA?

Confidential transaction is one of the most powerful new features being explored in Elements. It keeps the amounts transferred visible only to participants in the transaction (and those they designate), while still guaranteeing that no more coins can be spent than are available in a cryptographic way. This goes a step beyond the usual privacy offered by Bitcoin’s blockchain, which relies purely on pseudonymous (but public) identities. This matters, because insufficient financial privacy can have serious security and privacy implications for both commercial and personal transactions. Without adequate protection, thieves and scammers can focus their efforts on known high-value targets, competitors can learn business details, and negotiating positions can be undermined.

Confidential Assets is a technology to support multiple asset types with blinding of asset tags, which builds on the privacy benefits of CT and extends the power and expressibility of blockchain transactions. It allows anybody to cryptographically verify that a transaction is secure: the transaction is authorized by all required parties and no asset is unexpectedly created, destroyed, or transmuted. However, only the participants in the transaction are able to see the identity of asset types involved and in what amounts.

For more information visit:
https://elementsproject.org/elements/confidential-transactions/
https://blockstream.com/2017/04/03/blockstream-releases-elements-confidential-assets.html

https://blockstream.com/bitcoin17-final41.pdf
https://blockstream.com/press/2017-04-03-blockstream-releases-elements-confidential-assets.html

Confidential Transactions: I think this was invented by Greg Maxwell. The idea and to sum up all the technical details, is to hide the amount of BTC that are being transacted.

So if for example you make a transaction of 1BTC, if you check on the blockchain, it wouldn't show up what amount of BTC that tx contains. I don't know how it would look like actually. "X BTC"? I don't know how it would show up.

This will require segwit which luckily we are getting soon. Im not sure if it also requires sidechain or this Mimblewimble.

CA, that i have never heard off.

What are Confidential Transactions and Confidential Assets?
Especially the latter is interesting.

Thanks