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1  Alternate cryptocurrencies / Altcoin Discussion / Are altcoins in a bubble? on: March 15, 2017, 04:02:07 PM
Title says all. Personally I vote bubble. Anything that increases 1000x is too good to be true IMO.
2  Bitcoin / Electrum / Windows 10 does not see Trezor in Electrum 2.7.17 on: January 15, 2017, 02:58:30 PM
Using Electrum 2.7.17

Imported a Trezor hardware wallet last month using Electrum 2.7.14 everything tested fine. Electrum recognized the wallet and PIN and imported successfully.

Now as of today, I'm unable to connect to my Trezor through Electrum  but can through the https://wallet.trezor.io website.

Error message is "Connection failed" when trying to load the wallet.

For troubleshooting attempted to set up a new hardware wallet, the error message is: "No hardware device detected. To trigger a rescan, press 'next'.

This is on a fully up to date Windows 10 machine. (ewww)

Known issue or just the computer?

Thanks!
3  Alternate cryptocurrencies / Altcoin Discussion / [DRK] Instant Confirmations Instant X on: November 08, 2014, 08:16:52 PM
Below is a video demonstrating coins propagating on the network instantaneously. Compared to Bitcoin which takes ten minutes for one confirmation this takes seconds. This is a game changer in cryptocurrencies. Just one example would be that you'd be able to instantly send coins between exchanges for arbitrage.

This not only sends the coins instantly but also confirms them making them available in seconds.

Video demonstrating Darkcoin's Instant X: https://www.youtube.com/watch?v=zBjUPj-TmFE&feature=youtu.be

Really very potent stuff; absolutely amazing.
4  Alternate cryptocurrencies / Altcoin Discussion / [DRK] Some good (or bad) publicity for Darkcoin on: November 07, 2014, 05:15:36 AM
Darkcoin seems to now be gathering national attention. Recently there has been two separate news publishers running stories regarding the cryptocurrency.

One being Fox News in Houston. The other being Bloomberg Businessweek.

Link for the Fox news one: https://www.youtube.com/watch?v=9YQnYpc52ks

Link for the Bloomberg Bussiness Week: http://www.businessweek.com/videos/2014-11-06/can-bitcoin-stocks-hold-up-against-the-feds

What do you think; is this the beginning of an adoption period of an emerging crypto similar to Bitcoin's rise?

After the news went live, the price rose by 26%.
5  Alternate cryptocurrencies / Marketplace (Altcoins) / WTT Darkcoin for Bitcoin on: November 02, 2014, 07:31:11 PM
Would like to only trade with trusted positive reputation members. Post below.
6  Alternate cryptocurrencies / Altcoin Discussion / Two valid WIF's for one public address. Why? on: October 27, 2014, 05:09:36 PM
I have a private key that is valid but I don't understand why. This is a long post so bear with me. Note: this address is worthless.
The below is a full key. Version 76.
Code:
3081d30201010420ca7b50f41b2f43e1e913bdb6f6ff3289223d9ec0ebe610f801a1e93cb2564d54a08185308182020101302c06072a8648ce3d0101022100fffffffffffffffffffffffffffffffffffffffffffffffffffffffefffffc2f300604010004010704210279be667ef9dcbbac55a06295ce870b07029bfcdb2dce28d959f2815b16f81798022100fffffffffffffffffffffffffffffffebaaedce6af48a03bbfd25e8cd0364141020101a12403220003c0ef03fc45624122c85791557be9782cc7a2a813125f317aa0136b25ce5cec76

Code:
ehco -n "3081.." | xxd -r -p | openssl asn1parse -i -inform DER -dump

 0:d=0  hl=3 l= 211 cons: SEQUENCE          
    3:d=1  hl=2 l=   1 prim:  INTEGER           :01
    6:d=1  hl=2 l=  32 prim:  OCTET STRING      
      0000 - ca 7b 50 f4 1b 2f 43 e1-e9 13 bd b6 f6 ff 32 89   This is the private key.
      0010 - 22 3d 9e c0 eb e6 10 f8-01 a1 e9 3c b2 56 4d 54   //ca7b50f41b2f43e1e913bdb6f6ff3289223d9ec0ebe610f801a1e93cb2564d54
   40:d=1  hl=3 l= 133 cons:  cont [ 0 ]        
   43:d=2  hl=3 l= 130 cons:   SEQUENCE          
   46:d=3  hl=2 l=   1 prim:    INTEGER           :01
   49:d=3  hl=2 l=  44 cons:    SEQUENCE          
   51:d=4  hl=2 l=   7 prim:     OBJECT            :prime-field
   60:d=4  hl=2 l=  33 prim:     INTEGER           :FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEFFFFFC2F
   95:d=3  hl=2 l=   6 cons:    SEQUENCE          
   97:d=4  hl=2 l=   1 prim:     OCTET STRING      
      0001 - <SPACES/NULS>
  100:d=4  hl=2 l=   1 prim:     OCTET STRING      
      0000 - 07                                                .
  103:d=3  hl=2 l=  33 prim:    OCTET STRING      
      0000 - 02 79 be 66 7e f9 dc bb-ac 55 a0 62 95 ce 87 0b   .y.f~....U.b....
      0010 - 07 02 9b fc db 2d ce 28-d9 59 f2 81 5b 16 f8 17   .....-.(.Y..[...
      0020 - 98                                                .
  138:d=3  hl=2 l=  33 prim:    INTEGER           :FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEBAAEDCE6AF48A03BBFD25E8CD0364141
  173:d=3  hl=2 l=   1 prim:    INTEGER           :01
  176:d=1  hl=2 l=  36 cons:  cont [ 1 ]        
  178:d=2  hl=2 l=  34 prim:   BIT STRING        
      0000 - 00 03 c0 ef 03 fc 45 62-41 22 c8 57 91 55 7b e9   This is the public key. Exclude the first byte.
      0010 - 78 2c c7 a2 a8 13 12 5f-31 7a a0 13 6b 25 ce 5c   //03c0ef03fc45624122c86791557be9782cc7a2a813125f317aa0136b25ce5cec76
      0020 - ec 76  
Above here is an asn1parse of the full key.
Doing such reveals that "ca7b50f41b2f43e1e913bdb6f6ff3289223d9ec0ebe610f801a1e93cb2564d54" is the private key.

Now, I'll convert it to WIF. (wallet import format)
Code:
1.)For 76, add '4c' to the front of it, and '01' to the back. (01 for compressed keys)
2.)SHA256sum it. "echo -n '4cca7b...' | xxd -r -p | sha256sum
3.)SHA256sum the previous result once more.
4.)Take the first 4 bytes from the result (8 characters) This is the checksum.
5.)Put the checksum at the end of step 1. The 4c....01 string[checksum].
6.)Convert it to Base58. This is now your WIF format.

S0.) ca7b50f41b2f43e1e913bdb6f6ff3289223d9ec0ebe610f801a1e93cb2564d54
S1.) 4cca7b50f41b2f43e1e913bdb6f6ff3289223d9ec0ebe610f801a1e93cb2564d5401
S2.) 54f1aa00273e23379fc4a08ad08b918d7e97b6ff1ebfa097350fb93dffdd00e6
S3.) 17f77291600662c7c2d7ae3969172dda3ec1885bdac75c356ba3dee94b4ce305
S4.) 17f77291
S5.) 4cca7b50f41b2f43e1e913bdb6f6ff3289223d9ec0ebe610f801a1e93cb2564d540117f77291
S6.) CMrX8rBGMH9deLwVWU1VTnMxCEKxWW4nwTjVWWGVtwDLVRF6vg4G

The above converted the private key to WIF format of 'CMrX8rBGMH9deLwVWU1VTnMxCEKxWW4nwTjVWWGVtwDLVRF6vg4G'.
Which is valid for the public address of "Xf5QNbxmxtBRK1BXY5yYNYZCJuugX5ro6v".

______________________________________________________________
Now this is the part I don't understand.
______________________________________________________________
The WIF format is valid and returns the correct private key for this address but it's completely different! (yet valid)
The above WIF when ran through pywallet returns 'XJ5EKWJQkxRENadpJAXoN4UJ3r3TN4mqn1UB8ecckBgSXnmFF3FW' as the private key. Which does return the public address I was working with.

Why does 'CMRX8....' translate to 'XJ5EKW...' and why didn't it return 'XJ5EKW....' when I completed the previous steps?

Basically, why are "XJ5EKWJQkxRENadpJAXoN4UJ3r3TN4mqn1UB8ecckBgSXnmFF3FW" and "CMrX8rBGMH9deLwVWU1VTnMxCEKxWW4nwTjVWWGVtwDLVRF6vg4G" both valid and different private keys for the public address of "Xf5QNbxmxtBRK1BXY5yYNYZCJuugX5ro6v"?

Summary

There are two valid Private WIF keys for the same public key. Why?
7  Alternate cryptocurrencies / Altcoin Discussion / The Deathblow to Proof of Stake on: July 14, 2014, 05:06:25 PM
A single point of failure
Mintpal was compromised. The attacker gained 30% of the total supply of Vericoin in the attack. Which in turn, led the Vericoin development team to do something unprecedented in cryptocurrency history. They created a mandatory rollback.

What is a rollback?
A rollback goes back in time from blockheight 100 to blockheight 75. When a rollback is performed, all transactions after a certain point in the blockchain are effectively destroyed. If Bob bought a casacius coin from Sally for 1000 vericoin, Bob would now get the 1000 vericoin back while Sally has nothing. All transactions after blockheight 75 would no longer exist.

The necessity of the rollback
In every single instance of any exchange or service getting hacked, there has never been a rollback implementation. For Vericoin, this was actually very necessary. Vericoin creates it's new blocks by using proof of stake. When the attacker gained 30% of the coins in one go, they effectively gained 30% of the hashing power. You can see how dangerous this is. All it would take is an additional 21% to effectively completely own the network. If Vericoin used a proof of work system, the only danger would be the market price plummeting from the sell off, but the network itself would never be in danger.

The unprecedented solution
A rollback is terrible. Every single cryptocurrency relies on the public blockchain ledger. It is the holy grail of the entire currency. Once something is written to it and not orphaned, it's set in stone. When the team decided to initiate the rollback, they decided to use the nuclear option. They broke the entire foundation of crypto and set a new norm where it will be ok to undo transactions if the are large enough. Instead of the developers only being developers, they've now taken the option to also be the federal reserve and the police.

Proof of Stake's flaws
Vericoin only had the nuclear option available because of proof of stake. When an attacker gains coins in a proof of stake currency, they not only gain money, they gain network control. Vericoin was between a rock and a hard place. They either let the attacker have 30% of the total staking power, or set the precedent of rolling back. The reason they took the rollback option was because they could. (for now)

Impossible to rollback when big
Vericoin is so new that there is not a lot of merchant support. If it was as widely used as Bitcoin with 1000's of transactions a day and tons of merchant support, a rollback would kill the currency. Merchants would of shipped products with no payments and people wouldn't of been payed. Hypothetically, if any proof of stake currency did become as big as Bitcoin and was compromised just like now with 30% of the total coin supply taken, the currency would effectively not be able to rollback and allow a malicious entity to control the network. A large hack would become a death blow creating uncertainty in the integrity of the network.

TLDR

  • None of yesterdays events were Vericoins fault.
  • Proof of Stake is not feasible: in a large attack, the attacker gains crypto and network control.
  • When a single entity fails (an exchange) no currency should ever undo their mistakes by wiping it from the chain.
  • If a proof of stake currency ever becomes huge, it would not be able to rollback and would have to allow a malicious entity to have network control.

8  Alternate cryptocurrencies / Altcoin Discussion / Mandatory Darkcoin Hardfork on the 20th on: June 17, 2014, 09:42:24 PM
Mandatory Update for All Darkcoin Users!

On June 20th the Darkcoin network will hardfork. During this time, old clients will not be able to operate. It is crucial that everyone involved in Darkcoin updates their clients. Below is information on what you need to do.

Regular Users / Non Masternode Operators
You have a choice to use either wallet version v0.9.10.x or v0.10.10.x
Difference between the two is v0.10.10.x allows the use of darksend. (optional)

Masternode Operators
You can only use the v0.10.10x wallet the other version will not work.
Details on how to operate a Masternode are available here.
https://darkcointalk.org/forums/guides.32/
https://darkcointalk.org/forums/master-nodes.47/

Macintosh Users
Wallet v0.9.10 is available
Available from official site or mirror.
Details below.

(Special Note: Mac wallet is compiled by user instacash his Darkcoin address is XtwzEuurDTNeVK5a26AzzZDdVkkPkAQ7Eu)

Exchanges
You are able to run either wallet version at your own discretion.
Source code is available here. Use the master branch. https://github.com/darkcoinproject/darkcoin

Pool Operators
You are able to run either wallet version.
Source code is available here. Use the master branch. https://github.com/darkcoinproject/darkcoin

P2Pool use Dstorm's Repository. https://bitbucket.org/dstorm/p2pool-drk

NOMP Code has been updated. https://github.com/zone117x/node-stratum-pool

Stratum Code has been updated. https://github.com/darkcoinproject/darkcoin-stratum

Binaries ( 9.10.0 stable )
https://www.darkcoin.io/downloads/darkcoin-qt.exe
https://www.darkcoin.io/downloads/darkcoin-qt
https://www.darkcoin.io/downloads/darkcoind

RC3 Binaries ( 10.10.0 masternodes/darksend )
https://www.darkcoin.io/downloads/rc/darkcoin-qt.exe
https://www.darkcoin.io/downloads/rc/darkcoin-qt
https://www.darkcoin.io/downloads/rc/darkcoind

Macintosh Binaries (9.10.0 stable)
Official Site: https://www.darkcoin.io/downloads/DarkCoin-Qt-MacOSX-v0.9.10.zip
mirror: https://www.dropbox.com/s/abanwlp72yz7zur/DarkCoin-Qt-MacOSX-v0.9.10.zip
zip shasum: 7df7f3e4964ee897fdf6bda81d455f80eccd69c0

Sources of Information
IRC #Darkcoin
IRC #Darkcoin-Test
Official Twitter account https://twitter.com/DarkcoinCrypto
9  Alternate cryptocurrencies / Altcoin Discussion / Darkcoin is now on Bitfinex! on: June 02, 2014, 06:44:57 PM
DRKUSD and DRKBTC pairs added on Bitfinex
Posted: 43 minutes ago

Dear customers,

We are pleased to announce that Darkcoin will be available to trade on the Bitfinex platform starting at 6PM CET. It is rare for us to add new trading products, but we believe that the advent of privacy-centric cryptocurrencies warrants out attention. Specifically, we believe that Darkcoin and the team behind it represent the most credible foray into this important frontier, and now that Darkcoin's market capitalization has reached non-trivial levels, we have decided to offer it as a trading option to our customers. As one might expect, will support trading in DRK/BTC, but, in addition, we will the first exchange to support trading in DRK/USD.

While we have no crystal balls at Bitfinex, we do nonetheless believe that the new features that Darkcoin aims to implement represents a substantial development in the cryptocurrency space, and we believe that any innovation that enhances privacy deserves our attention. Naturally, we do not condone the use of Darkcoin for illicit purposes, but we do believe in the right to privacy.

Initially, we will only offer cash exchange transactions. In time, as our order book deepens and Darkcoin successfully navigates certain milestones, we will also possibly allow swap leverage and shorting, should Darkcoin's risk profile and volatility merit it.

Darkcoins can't also be used as collateral for margin transactions.

We hope that you that you find these new trading products to be of value to you and we, of course, always welcome your feedback.

Best regards,
The Bitfinex team

https://www.bitfinex.com/pages/announcements
10  Alternate cryptocurrencies / Mining (Altcoins) / [ANN][POOL] Mining.DarkcoinTalk.org 25% extra block rewards on: May 20, 2014, 02:23:54 AM

Mining.DarkcoinTalk.org is now rewarding miners with 25% more income for the next 100 blocks found by the pool.

Active Now.

If a block is found worth 10 the reward for all of you mining will be 12.5 Darkcoin.

The reason we are doing this, is because DarkcoinTalk is involved for the long haul. We believe that Darkcoin will be just as important as Bitcoin. (maybe even more) The pool helps pay for the server costs of
the forums. We do need support to keep adding new features and to constantly improve this site as well as others under the same name.

We are hoping that after the reward, you will stay mining at our pool
and make it your primary. Mine with a pool that is giving back and helping Darkcoin, not a pool only made to make the operator money.

We encourage you to register immediately to set up your workers and get everything set up. Thank you for mining with us. We'll make this currency global and as well known as Bitcoin.

-DarkcoinTalk.org
11  Alternate cryptocurrencies / Announcements (Altcoins) / Darkcoin Pool 25% More Darkcoin on: May 20, 2014, 02:16:12 AM

Mining.DarkcoinTalk.org is now rewarding miners with 25% more income for the next 100 blocks found by the pool.

Starting at 8PM EDT (New York) on May 20th 2014. Or May 21st 2014 1AM BST (London)

If a block is found worth 10 the reward for all of you mining will be 12.5 Darkcoin.

The reason we are doing this, is because DarkcoinTalk is involved for the
long haul. We believe that Darkcoin will be just as important as Bitcoin. (maybe even more) The pool helps pay for the server costs of the forums. We do need support to keep adding new features and to constantly improve this site as well as others under the same name.

We are hoping that after the reward, you will stay mining at our pool and make it your primary. Mine with a pool that is giving back and helping Darkcoin, not a pool only made to make the operator money.

We encourage you to register immediately to set up your workers and get everything set up. Thank you for mining with us. We'll make this currency global and as well known as Bitcoin.

-DarkcoinTalk.org
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