Bitcoin Forum
August 21, 2018, 06:39:11 PM *
News: Latest stable version of Bitcoin Core: 0.16.2  [Torrent].
 
   Home   Help Search Donate Login Register  
Pages: « 1 ... 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 [171] 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 ... 614 »
  Print  
Author Topic: [SDC] ShadowCash | Welcome to the UMBRA  (Read 1285746 times)
This is a self-moderated topic. If you do not want to be moderated by the person who started this topic, create a new topic.
RiverBoatBTC
Full Member
***
Offline Offline

Activity: 224
Merit: 100


View Profile WWW
December 22, 2014, 08:30:42 AM
 #3401

wow this coin is all cool and shit even has a room on anonymous' IRC server

1534876751
Hero Member
*
Offline Offline

Posts: 1534876751

View Profile Personal Message (Offline)

Ignore
1534876751
Reply with quote  #2

1534876751
Report to moderator
1534876751
Hero Member
*
Offline Offline

Posts: 1534876751

View Profile Personal Message (Offline)

Ignore
1534876751
Reply with quote  #2

1534876751
Report to moderator
Advertised sites are not endorsed by the Bitcoin Forum. They may be unsafe, untrustworthy, or illegal in your jurisdiction. Advertise here.
ffmad
Legendary
*
Offline Offline

Activity: 868
Merit: 1000



View Profile
December 22, 2014, 09:44:41 AM
 #3402

We are anonymous  Cool

ozkraut
Sr. Member
****
Offline Offline

Activity: 508
Merit: 256


View Profile
December 22, 2014, 10:07:31 AM
 #3403

We are anonymous  Cool

Oooooh yeah baby -> unknown.....not even a shadow

Monero - Wir sind die Leute vor denen uns unsere Eltern gewarnt haben!
traumschiff
Legendary
*
Online Online

Activity: 1428
Merit: 1001


180 BPM


View Profile
December 22, 2014, 10:42:15 AM
 #3404

This seems epic.  I wonder why ShadowCash is not getting much attention yet.  Seems like the price is way undervalued.

By my opinion,  we are trading at 1/10th our proper value with this tech in this space.  Perhaps even more than that.  I think its only a matter of time.    But the sooner the better.

+1

Technological advancements like these should result in a slow and steady rise fow days / weeks. Problem is the altmarket is drained out of volume, but if this coin doesn't succeed nothing will on the long run.

Ryno should post in r/darkmarkets imho and tell them about the tech and how it is useful (+ it's on the mainnet). Outside investments are important and that could be SDCs main source for it.

deliveryman
Sr. Member
****
Offline Offline

Activity: 309
Merit: 250


View Profile
December 22, 2014, 11:28:47 AM
 #3405

This seems epic.  I wonder why ShadowCash is not getting much attention yet.  Seems like the price is way undervalued.

By my opinion,  we are trading at 1/10th our proper value with this tech in this space.  Perhaps even more than that.  I think its only a matter of time.    But the sooner the better.

+1

Technological advancements like these should result in a slow and steady rise fow days / weeks. Problem is the altmarket is drained out of volume, but if this coin doesn't succeed nothing will on the long run.

Ryno should post in r/darkmarkets imho and tell them about the tech and how it is useful (+ it's on the mainnet). Outside investments are important and that could be SDCs main source for it.

Thats a really good idea actually. Lots of openminded people over there
Schild_
Sr. Member
****
Offline Offline

Activity: 406
Merit: 250


View Profile
December 22, 2014, 02:07:03 PM
 #3406

This seems epic.  I wonder why ShadowCash is not getting much attention yet.  Seems like the price is way undervalued.

By my opinion,  we are trading at 1/10th our proper value with this tech in this space.  Perhaps even more than that.  I think its only a matter of time.    But the sooner the better.

Incredible... People still don't get how game changing shadow is...
drAGon925
Hero Member
*****
Offline Offline

Activity: 527
Merit: 500



View Profile
December 22, 2014, 02:30:22 PM
 #3407

@Schild_   Do not expect a quick understanding Smiley

@Skaia     Holders are Hodling, be patient, Rome was not built overnight

Well done and congratulations to the devs and team!!!

Pline
Full Member
***
Offline Offline

Activity: 308
Merit: 100



View Profile
December 22, 2014, 03:04:23 PM
 #3408

A lot of the other so-called anonymous coins never felt right to me.  My gut tells me SDC is where its at, especially after this implementation. I was never impressed with coinjoin. Zero-knowledge is where its at. These devs are doing big things and have the right vision for the future.  Ryno seems like a super cool dude also.  I just hope the market will not be so stupid.  Paycoin seems like a scam, and has 80 million market cap right now, yet SDC only 500K, its insane.

KAMAGAMES
TelegramTwitterFacebook ●●●●●●BUY KAMAGAMES TOKENS●●●●●● Linked-InRedditMedium
▀▄▀▄▀▄▀▄▀▄▀Join the growing community of players from around the world ▀▄▀▄▀▄▀▄▀▄▀
zuyfg888
Sr. Member
****
Offline Offline

Activity: 490
Merit: 250



View Profile
December 22, 2014, 03:10:54 PM
 #3409

Maybe people want dump sdc,Buy Xpy.

BitPlay██  ██  █
██  ██  █
██  ██  █
██  ██  █
██  ██  █
██  ██  █
██  ██  █
██  ██  █
██  ██  █
██  ██  █
██  ██  █
██  ██  █
██  ██  █
██  ██  █
██  ██  █
██  ██  █
██  ██  █
██  ██  █
██  ██  █
██  ██  █
██  ██  █
██  ██  █
██  ██  █
██  ██  █
██  ██  █
██  ██  █
|██  ██  █
██  ██  █
██  ██  █
██  ██  █
██  ██  █
██  ██  █
██  ██  █
██  ██  █
██  ██  █
██  ██  █
██  ██  █
██  ██  █
██  ██  █
Alty
Hero Member
*****
Offline Offline

Activity: 714
Merit: 500


RISE Project Manager


View Profile
December 22, 2014, 03:22:16 PM
 #3410

Hats off to the devs of ShadowSend v2

Testing has proved that conversion from SDC > Shadow, Shadow > Shadow and Shadow > SDC works flawlessly on mainnet. Transactions happen very quick and they are completely unlinkable on the blockchain.

Finally a way to transact privately and securely.

Ryno and Technovert working on SDC = Masters of The Coin 2015
ffmad
Legendary
*
Offline Offline

Activity: 868
Merit: 1000



View Profile
December 22, 2014, 04:35:28 PM
 #3411

Hats off to the devs of ShadowSend v2

Testing has proved that conversion from SDC > Shadow, Shadow > Shadow and Shadow > SDC works flawlessly on mainnet. Transactions happen very quick and they are completely unlinkable on the blockchain.

Finally a way to transact privately and securely.

Ryno and Technovert working on SDC = Masters of The Coin 2015

Now we should just spread the word everywhere !  Smiley

LiteBit
Legendary
*
Offline Offline

Activity: 1121
Merit: 1000



View Profile
December 22, 2014, 04:49:36 PM
 #3412

Fork has happened and went seamlessly.

Remember to update to at least 1.3.0.5 or you're on the wrong blockchain!

http://shadowtalk.org/topic/296/shadowcash-zero-knowledge-anonymous-distributed-e-cash-via-traceable-ring-signatures/2
Automatic Monkey
Hero Member
*****
Offline Offline

Activity: 505
Merit: 500


View Profile
December 22, 2014, 05:00:15 PM
 #3413

Maybe people want dump sdc,Buy Xpy.


Sure, I can't wait to get some XPY. It's just like using a credit card, but without that all that buyer's protection.

Try ShadowCash, the first coin with instant and decentralized private transactions!
SDC address: SUPERMAN8eDvcPL6RWYMVwtPzUtqWi2zCr
Wallet Private Key: 7S6fJBEzXqJuuGCvEPcgBSbd5wmjVTvDj7591gNKcTmS7X47e98
Cornett
Hero Member
*****
Offline Offline

Activity: 616
Merit: 500

★ IT's Party Time! ★


View Profile
December 22, 2014, 05:43:56 PM
 #3414

Maybe people want dump sdc,Buy Xpy.


Sure, I can't wait to get some XPY. It's just like using a credit card, but without that all that buyer's protection.

Lol  Cheesy you made me laugh
fearcoka
Hero Member
*****
Offline Offline

Activity: 980
Merit: 1000



View Profile
December 22, 2014, 05:52:50 PM
 #3415

Maybe people want dump sdc,Buy Xpy.


Sure, I can't wait to get some XPY. It's just like using a credit card, but without that all that buyer's protection.

Even better, send me your credit card information and Ill buy some XPY for you. Since you don`t know me, we can say this is an anonymous transaction.

Ill send your XPY once purchased. xD

.ARAW.
The Decentralised
Payment
for E-Commerce Ecosystem
███████████████████████████
██████████████▀▀▀▀▀████████
████████████░░░░░░░████████
███████████░░░░▄███████████
███████████░░░░████████████
████████░░░░░░░░░░░████████
████████▄▄▄░░░░▄▄▄█████████
███████████░░░░████████████
███████████░░░░████████████
███████████░░░░████████████
███████████░░░░████████████
███████████▄▄▄▄████████████
███████████████████████████
███████████████████████████
███████████████████████████
███████████████████████████
█████░████████▀░░░░▀▀▄█████
█████░░▀▀████░░░░░░░░▄█████
█████▀░░░░░░░░░░░░░░░██████
█████▄░░░░░░░░░░░░░░███████
███████░░░░░░░░░░░░████████
████████▄░░░░░░░░▄█████████
████▄▀░░░░░░░░▄▄███████████
███████████████████████████
███████████████████████████
███████████████████████████
███████████████████████████
███████████████████████████
████▀░░▀███████████████████
████▄░░▄███████████████████
███████████████████████████
████░░░░██░░░░▀░░░░░░▀█████
████░░░░██░░░░░▄▄▄░░░░▀████
████░░░░██░░░░█████░░░░████
████░░░░██░░░░█████░░░░████
████░░░░██░░░░█████░░░░████
████░░░░██░░░░█████░░░░████
███████████████████████████
███████████████████████████
Longenecker
Full Member
***
Offline Offline

Activity: 226
Merit: 100


View Profile
December 22, 2014, 06:04:32 PM
 #3416

Why wouldn't you just delete the line "when clearly there is no more NIZKP in the source than exists in Monero's keyimage system." instead of striking through since it is obvious fud? Advertising, that's why.

Because anyone that gets email notifications has the full text of what I said anyway. If you'd prefer, I'll gladly remove the strikethrough, since the point is valid. Also, if there's a miraculous advancement in NIZKP implementation in the source please do point it out to me and I will absolutely publicly admit my gross inability to notice it.

Hi Fluffy,

I just spoke with SDCDev regarding the comment above:

"it's in 'generate signature' (https://github.com/SDCDev/shadowcoin/commit/317b9b1f5121ecde162fd8d37fbd587182c45fef), its just the hash commitment from the signature... we don't have snarks or full zero knowledge, just a zero knowledge proof. The keyimage is the tag.. the zkp is the whole construction of tag... the algorithm in the paper pretty much translates directly to the code" - SDCDev


WP: http://shadow.cash/downloads/shadowcash-anon.pdf

Note: SDCDev has stated he will be responding himself with a clearer explanation.


Rynomster or anyone else: Feel free to correct me wherever I'm wrong as this is also a learning process for me.

AFAIK Cryptonote doesn't destroy or mint coin during its process. If I'm correct, then this is the biggest difference between the two schemes.


My understanding of Shadowcash:
Shadowcash is similar to Zerocoin in the sense that it uses anonymous token system to destroy SDC then mint new Shadow (SDC-to-Shadow); However, unlike Zerocoin, it doesn't require a trusted setup to convert Bitcoin into newly minted Zerocoin.

Below is an image of the Zerocoin minting process:


(continued)

The Shadowcash network destroys the SDC and mints Shadow in it's place (SDC-to-Shadow) via smaller denominations of Shadow Tokens (Shadow) equal to that of the destroyed SDC. These Shadow Tokens (SDT) make up the members of the ring signature. The newly minted Shadow tokens have no link to the destroyed Shadowcoin, because it is sent to dual-key stealth address. Non-interactive zero knowledge proofs (NIZKPs) are used when sending Shadow-to-Shadow between Stealth Addresses; Furthermore removing linkability between parties. The only way to redeem Shadow is to provide ownership of the tokens through ownership of the address via a traceable ring signature. Thus, if you don't own the address containing the Shadow then the network won't allow you to mint (redeem) new Shadowcoin (Shadow-to-SDC).

How can anyone be sure that there are no "phantom tokens"? Who is going to control the creation of these tokens? Is it all based on trust, are you serious? wtf

they can only be created by sending SDC -> Shadow, there are api:

>shadowcoind help anon
anoninfo [recalculate]
anonoutputs [systemTotals] [show_immature_outputs]
estimateanonfee <amount> <ring_size> [narration]
reloadanondata
sendanontoanon <stealth_address> <amount> <ring_size> [narration] [comment] [comment-to]
sendanontosdc <stealth_address> <amount> <ring_size> [narration] [comment] [comment-to]
sendsdctoanon <stealth_address> <amount> [narration] [comment] [comment-to]

and in the wallet there is a chain data page, which shows all the anonymous outputs in the system.



Shadowcash doesn't seem similar to cryptonote other than the use of ring signatures. IMO, ShadowCash seems more advanced in it's implementation vs Cryptonote because Shadowcash destroys the inputs (SDC) and creates anonymous outputs (Shadow).


From the Monero thread regarding I/Os:
So miner(or anybody) knows sum of all spent inputs and outputs ?

The ins and outs each have amounts, so you can add that up.

Quote
Am I right ?

Transaction
input(a1=5 XMR, random=6 XMR) output( g1=3 XMR, a3=1 XMR, keyImage_a1 )
ringSing(pub a1, pub random and private a1)

using VER and LNK everybody can verify that a1 holds 5 XMR, so I'm able to spend 4 XMR and miner can take 1 XMR fee ?

implies a1 was used (because I can't spend random)
implies a1_priv * H_p(A1_pub) = keyImage_a1

Am I missing something ?

I'm not sure of your notation here Is 'random' a foreign output used for a ring sig? In that case, that's not how it works. Each input uses a separate ring sig, with other outputs of the same same.

And what does g1 (or a3 for that matter) denote on your output?

yes I want use "foreign output used for a ring sig" to obscure transaction. I'll pull it from block chain.
g1(I pay for god) and a3(my new address)  does not matter.

Okay well like I said, each input will have it own set of foreign outputs used for mixing. Such outputs will all be of the same size, so this doesn't change the amount of the transaction, just its possible funding sources. Perhaps you want to revise your example?

Please can you make example:
1) I have unspent output  5 XMR, I want to pay 3 XMR for goods and 1 XMR transaction fee.
2) I want obscure my payment with 1 foreign input what holds 6 XMR.

You can't do #2 with the the protocol works today. There is a modification from gmaxwell that allows using foreign outputs of different sizes but it isn't implemented anywhere AFAIK.

Your foreign ouputs need to be of the same size.

So we would have (borrowing some of your notation)

tx(input(ring(a1(5 XMR),f1(5 XMR),f2(5 XMR),f3(5 XMR)) -> output(r1(3 XMR),c1(1 XMR)))

a1 = our own upspent output
f1..f3 = foreign outputs of size equal to a1
r1 = output owned by recipient
c1 = change output owned by us

We could also include additional inputs (and generate more change) if we wanted to further obscure the amount of the transaction.

Did you forgot to add  keyImage for a1 ? Or how can be this transaction verified ?

Like I said before, understanding this scheme has been a learning process for me. If I'm incorrect in any of information, Ryno or anyone else please feel free to correct me.

I spent the better part of the day preparing a guide/explanation slide presentation (draft) that goes over the flow from start to finish. The information in the presentation comes from the WP and IRC, so I'm sure it's 100%. Ryno still needs to verify everything though.

I think the visualization of the process will help people understand the groundbreaking innovation made here and more importantly - how to use it. It's truly a unique system.

(1st Draft and will edit accordingly)
https://docs.google.com/presentation/d/1yX2jN618Rnzs4g2ri_utdKdHbny6-xnRcPhOuhLNGB0/edit#slide=id.g577a31a2a_086

I'm working with crz to create a proper technical infographic that shows the process similar to the zerocoin and cryptonote images above. Not sure when those will be released but feel free to donate to crz!  http://shadowtalk.org/topic/74/new-branding-wallet-logo-icons-visuals-infographics-media/12

Thanks!

Excellent post CST.  Worth restating is the fact that cryptonote simply obfuscates the outputs, whereas Shadow destroys them... a huge difference.
Automatic Monkey
Hero Member
*****
Offline Offline

Activity: 505
Merit: 500


View Profile
December 22, 2014, 06:05:05 PM
 #3417

Fork has happened and went seamlessly.

Remember to update to at least 1.3.0.5 or you're on the wrong blockchain!

http://shadowtalk.org/topic/296/shadowcash-zero-knowledge-anonymous-distributed-e-cash-via-traceable-ring-signatures/2

Finally got it! The bootstrap does it's thing, turns out I had dropped it in a directory for an old user that no longer has a wallet.

So far, looks great! Transmissions take just a couple of seconds whether they are SDC or Shadow. Now I'm going to try it on Android on my phone.

The mined amounts are considerably larger, and I assume that is due to the large Shadow transfer fee being processed in the blocks and distributed to the stakers. Nice touch, that will help distribute the coin a bit.

One thing that isn't clear to me- the wallet doesn't seem to be telling me how much of my wallet balance is Shadow and how much is SDC.

Try ShadowCash, the first coin with instant and decentralized private transactions!
SDC address: SUPERMAN8eDvcPL6RWYMVwtPzUtqWi2zCr
Wallet Private Key: 7S6fJBEzXqJuuGCvEPcgBSbd5wmjVTvDj7591gNKcTmS7X47e98
lolikop
Hero Member
*****
Offline Offline

Activity: 644
Merit: 500



View Profile
December 22, 2014, 06:07:26 PM
 #3418

Shadowcash is an amazing anon coin soon to be more worth then DRK
Schild_
Sr. Member
****
Offline Offline

Activity: 406
Merit: 250


View Profile
December 22, 2014, 06:08:01 PM
 #3419

Maybe people want dump sdc,Buy Xpy.


Sure, I can't wait to get some XPY. It's just like using a credit card, but without that all that buyer's protection.

Even better, send me your credit card information and Ill buy some XPY for you. Since you don`t know me, we can say this is an anonymous transaction.

Ill send your XPY once purchased. xD

Has XPY any relation to paypal except typo and look alike name?
coinzcoinzcoinz
Hero Member
*****
Offline Offline

Activity: 530
Merit: 500


View Profile
December 22, 2014, 06:09:21 PM
 #3420

Question: The "Transactions" tab in the wallet does not update if a transaction has happened during your wallet session. You need to restart the wallet for the transaction to show. Is this getting improved? I mean, this is a pretty basic requirement. Stuff like this should work as expected.

Please note that everything else about this coin is awesome.
Pages: « 1 ... 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 [171] 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 ... 614 »
  Print  
 
Jump to:  

Sponsored by , a Bitcoin-accepting VPN.
Powered by MySQL Powered by PHP Powered by SMF 1.1.19 | SMF © 2006-2009, Simple Machines Valid XHTML 1.0! Valid CSS!