Topic: [SDC] ShadowCash | Welcome to the UMBRA - page 433. (Read 1289714 times)

Can someone explain what happens if we remove convert button and use shadow to shadow only. Isnt that alot simpler?

^FOLLOW-UP question:

1. if the user has a pool of shadow (which are invisible on the blockchain, yes?)
2. some of the pooled shadow are sent to a newly generated recipient stealth address, 
3. when/if they are converted back to SDC by the recipient stealth address they would be completely anonymous?

Thank you smooth. Most gracious of you to come in here and discuss the tech.

I'd like to focus on this part of your reply. It seems like an obvious weakness which the devs must have considered. Certainly even my non-tec brain could savvy ways to obfuscate the the coin state change. The user could determine the time/amount of conversion or this could occur ina randomised way or perhaps it never need happen at all?!

Hopefully a Team member or Ryno could address this more technical aspect of SSv2?

Thanks again smooth! Most good of you to rejoin the convo.  

As far as I can tell that is true. The SDC implementation was apparently built from scratch (I haven't personally reviewed it) and from the whitepaper is effectively cryptonote with some relatively minor tweaks.

The XMR cryptonote implementation was apparently built (presumably also from scratch) by cryptonote itself, a shadowy (no pun intended) group that has no direct participation in the cryptocurrency community as far as anyone knows. They also created something called cryptonotecoin, but only as a proof-of-concept that is designed to have no value (the blockchain resets itself after a month or something).


Essentially the same, if widely used, but see below. The reduced number of denominations provides a small improvement in anonymity, but also an increase in transaction size, so it isn't really clear this ends up being a net gain in anonymity (compared to say an increase in mix factor with comparable increase in size).


I haven't seen the SDC wallet but from the screen shots in the OP it certainly looks nice. I'd give it high marks based on that alone.


At that point you are effectively using a traceable coin with a short trip through an untraceable coin, which makes the untraceable coin something of mixer, and that in turn only helps if there is a high level of activity, but still reduces anonymity given time-based attacks.

Consider that you take 53,17 SDC, convert it to shadow, send it to someone (for example to pay for a private purchase), and soon thereafter he converts it back to 53.17 SDC. During which time there hasn't been a whole lot of activity (certainly no other transactions in that same amount or close to it). Is this really fooling anyone?

(I have pointed out similar issues with the suggestion that Bitcoin add anonymity using a cryptonote-based sidechain.)


The advantages would be easier integration with services (exchanges, etc.) that expect everything to operate just like a Bitcoin clone, not and deal with stealth addresses, mix factors, etc.

Also lower cost for the non-anon transactions, since they are smaller and less resource intensive, but the trade off is moving activity to the (lower cost) non-anonymous coin reduces activity in the anonymous coin, which in turn reduces effective anonymity.


XMR stores the bloockchain in memory, which means you currently need at least 4 GB to run a node with reasonable performance, and this is growing, albeit slowly. DB development is progressing, also slowly. By contrast, SDC I understand uses the Bitcoin DB code so probably leveldb for storage? That isn't blazingly fast, but generally fast enough (especially for a coin with much less activity than BTC), and eliminates the issue of high memory requirement.


That is a tradeoff you will have to make. See above.

Hope this helps.

OK. Apologies smooth.

I have re-read some of the thread . I agree your comments about shadowsend were largely positive. See:


I would like to invite smooth, fluffypony and anybody else to study this last para most closely and open it up for discussion.

Assertions:

1. Is it true to say both SDC and XMR have built their own cryptonote systems from scratch?
2. Is it true to say Shadow>Shadow transactions offer the same security as Monero? Perhaps better?
3. Is it true to say providing a working GUI wallet for cryptonote transactions that SDC made great strides forward for user-adoption of a working cryptonote implementation?

Questions:

1. smooth said: "If you mint and redeem frequently, you will have issues that reduce your anonymity". Is this a problem? Is so solutions? Discuss

2. smooth mentioned advantages ("This is indeed something new, and there are some advantages to it…"). However these were not mentioned. Any suggestions?

3. My understanding is that XMR does not use a blockchain db. Working out your db structure I bleieve is why you're still developing the gui wallet. In any case what are the implications (pros/cons) re the differing db structures

4. Do we still need SDC>SDC? Useful for non-anon transactions? Does it compromise our anon to keep SDC>SDC an option?

Deposits and withdrawals at crypts are now fixed. We had an issue with an extremely slow daemon due to a misconfiguration which is now resolved. We apologize for the extended downtime

Amen to that. Pathetic. I bet no sex either.....

Anybody who spends Christmas trolling is really sad lets just give thanks that we have lives and family who love us unlike these sad people sniff sniff i just wish i could hug them all better.

+1 keep the votes coming people!

If Rynomster wins this it's going to bring alot of attention to SDC alot of people have voted.

Anyone know what the average amount of orphaned blocks should be when staking?  It seems I have been getting a lot of blocks generated/mined, but they aren't accepted.

Some trolls are worth saving. 

Merry Xmas

Lets calm down guys. Atmosphere is icy here!

Stop feeding the retards coming here by quoting or answering them. Someone will just black list them if they keep going.

Lol - who asked you?

haha I don't want your SDC
Thanx

You want me to pee in a cup too afterwards?

SebSebastian.    

I like this habit some people have of signing their names after they write something, like their username isn't already visible. 

SebSebastian

Nice try to crap here

Please be advised. We are being trolled by TheJackal. Simply IGNORE.