Will Confidential Transactions allow us to reuse addresses safely?

4

It is often said that, due to the natural transparency of the blockchain, one should have a multi-address wallet and try to not reuse addresses, so that the user's transactions are not so easily revealed.

Now, it seems at some point we will have the Confidential Transactions feature implemented in Core. So, when this moment arrives, will we be able to reuse addresses? Will it be safe to use a mono-address wallet?

knocte

Posted 2016-01-14T06:55:13.027

Reputation: 1 531

Answers

6

My understanding of confidential transactions is that it only hides the amounts, not the addresses involved (someone please let me know if this is not the case).

Since only the amount is hidden, reusing the same address would still connect your various transactions together, linking them as likely involving the same user.

morsecoder

Posted 2016-01-14T06:55:13.027

Reputation: 12 624

you mean because they would know who are you transacting with? or because you can always know the total balance of an address regardless of CT usage?knocte 2016-01-14T23:28:14.233

You can't know the balance of an address if CT is being used, but you can still know if it's being used or not.morsecoder 2016-01-14T23:29:31.597

ok, that's good enough for me, thanks for the answerknocte 2016-01-14T23:31:39.667

No problem. Don't forget that ole green check mark if this answered your Q ;)morsecoder 2016-01-14T23:33:08.827

1

I wouldn't advice that. That still leaves a huge amount of meta data visible to everyone.

Also, why would you. HD wallets are very well supported these days.

Jannes

Posted 2016-01-14T06:55:13.027

Reputation: 5 823

what does HD stand for?knocte 2016-01-14T15:33:24.727

2Hierarchical deterministic wallet.morsecoder 2016-01-14T16:33:44.070