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1  Alternate cryptocurrencies / Service Discussion (Altcoins) / Cryptsy was hacked - lost 13,000 BTC & 300,000 LTC on: January 15, 2016, 04:08:54 AM
http://blog.cryptsy.com/
2  Bitcoin / Development & Technical Discussion / Perl Private Key -> Public Address on: March 19, 2015, 07:09:45 PM
Does any one have a minimal / basic perl script that can generate a public addresses given a 32 byte private key?

Most of the perl code examples on Github are unmaintained / broken / years old and I am having troubles getting any of them working.

Something similar to this python code:

Code:
import ecdsa

secp256k1curve=ecdsa.ellipticcurve.CurveFp(115792089237316195423570985008687907853269984665640564039457584007908834671663,0,7)
secp256k1point=ecdsa.ellipticcurve.Point(secp256k1curve,0x79BE667EF9DCBBAC55A06295CE870B07029BFCDB2DCE28D959F2815B16F81798,0x483ADA7726A3C4655DA4FBFC0E1108A8FD17B448A68554199C47D08FFB10D4B8,0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEBAAEDCE6AF48A03BBFD25E8CD0364141)
secp256k1=ecdsa.curves.Curve('secp256k1',secp256k1curve,secp256k1point,(1,3,132,0,10))

#--------------------------------------

import binascii, hashlib

def addy(pk):
 pko=ecdsa.SigningKey.from_secret_exponent(pk,secp256k1)
 pubkey=binascii.hexlify(pko.get_verifying_key().to_string())
 pubkey2=hashlib.sha256(binascii.unhexlify('04'+pubkey)).hexdigest()
 pubkey3=hashlib.new('ripemd160',binascii.unhexlify(pubkey2)).hexdigest()
 pubkey4=hashlib.sha256(binascii.unhexlify('00'+pubkey3)).hexdigest()
 pubkey5=hashlib.sha256(binascii.unhexlify(pubkey4)).hexdigest()
 pubkey6=pubkey3+pubkey5[:8]
 pubnum=int(pubkey6,16)
 pubnumlist=[]
 while pubnum!=0: pubnumlist.append(pubnum%58); pubnum/=58
 address=''
 for l in ['123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz'[x] for x in pubnumlist]:
  address=l+address
 return '1'+address
 
print addy(0x18E14A7B6A307F426A94F8114701E7C8E774E7F9A47E2C2035DB29A206321725)
print addy(int(hashlib.sha256('something small and easy to remember but not easy to guess').hexdigest(),16))


ref: https://bitcointalk.org/index.php?topic=84238.0

Would be happy to provide a small bounty.

thanks



3  Alternate cryptocurrencies / Altcoin Discussion / Thoughts about Neucoin? on: February 04, 2015, 01:32:08 PM
Just saw this http://www.neucoin.org/en/

Apparently they have raised $2.25M

Premined 2.5% premine

Thoughts?
4  Alternate cryptocurrencies / Service Announcements (Altcoins) / [ANN] BLOCKTREE.IO - NEW Altcoin Block Explorer on: February 02, 2015, 08:14:10 AM


BLOCKTREE.IO

http://www.blocktree.io

Multi Coin Block Explorer

Custom coded front and back end

Supports POW and POS coins

Coin Market Cap. display (if coin is traded on Cryptsy, Bittrex or Poloniex)

If you are looking for a block explorer for your coin please send me a pm.  Smiley


5  Alternate cryptocurrencies / Altcoin Discussion / createrawtransaction using curl - is it possible? on: October 29, 2014, 06:05:52 PM
Have been trying to write a dust cleaner for altcoins in perl.

After constant 500 server errors using the perl module JSON::RPC::Client I have been trying to use curl directly to see what format the request needs to be in.

However I cannot get createrawtransaction to work with curl either.

I have tried just about every different formatting combination I can think of, for example:

curl --data-binary '{"jsonrpc": "1.0", "id":"curltest", "method": "createrawtransaction", "params": [ "[{\"vout\":1,\"txid\":\"0bfa637d84586fc0acee31409fed3f771c78458bad195eb6f2d16ff5d4eaef07\"},{\"vout\":0,"txid":\"0ec54adfbd8d83f10c5ffb9429431129cf0f6f9ffb096f3c255458032ece5280\"}]","{\"DGV3v6MWakbBzmir9gDNnaU8yV7KGPUTi4\":0.19}" ] }' -H 'content-type: text/plain;' http://user:pass@127.0.0.1:6666/

Other calls (using perl or curl) do not result in errors for example listtransactions, getinfo, validateaddress etc.

I have read quite a few posts on stackexchange and bitcoinexchange asking if this can be done... There are no answers.

So can it be done? If so, where am I going wrong?

6  Alternate cryptocurrencies / Altcoin Discussion / WARNING Pool Operators - SHA256 Stratum Exploit in the Wild on: July 19, 2014, 02:22:42 PM
I noticed recently the top miners on a couple of my SHA256 pools had very large hashrates but were not finding any blocks.

After looking further into the situation I am fairly confident they were cheating the pool. Somehow they are submitting lots of low difficulty shares. I have banned them and earnings are back to estimates. Today one of the cheats created another account which I also just banned.

Using Crypto-Expert's latest version of stratum-mining. Scrypt seems to be unaffected.

Just thought I would put it out there so other pool owners who use this version of stratum-mining are aware there is an issue.

I assume it has something to do with the diff1 setting. If anyone has any ideas what this could be changed to to stop this problems I would be most appreciative!

Have tried both:

diff1 = 0x00000000ffff0000000000000000000000000000000000000000000000000000

and

diff1 = 0x00000000ffffffffffffffffffffffffffffffffffffffffffffffffffffffff
7  Alternate cryptocurrencies / Altcoin Discussion / Safecoin / MaidSafeCoins IPO thoughts? on: April 22, 2014, 05:14:03 AM
Wondering what people are thinking about the upcoming IPO for Safecoin / MaidSafeCoin?

http://www.safecoin.io/

What alarms me it that the IPO is saying 10% of SafeCoins will be available during the IPO which runs until the 10% are sold or 30 days is reached.

That means 429,496,729 are going to be available in the first 30 days.

At a price of 17,000 Safecoins per 1 Bitcoin.

That means they are aiming to potentially raise: 25264.5 BTC or US$12,632,256

Seems excessive to me.

Thoughts?
8  Economy / Service Discussion / NO PROOF MtGox is insolvent - Document possibly a Hoax? - STOP THE FUD! on: February 25, 2014, 12:07:55 PM
It seems like everyone is running round like like lunatics declaring MtGox is insolvent and dead without any solid proof. I am not saying this may not the case but lets at least wait for a solid bit of evidence - either an announcement from MtGox or proof that the document going around claiming MtGox lost 700,000+ BTC is real. Otherwise we are shooting ourselves in the foot. The media is and will have a field day on these claims and if later they prove to be false the short term damage will have already been done.

The document in question does not look at all professional to me and no one really seems to know where it really came from. What if it was just created by someone wanting cheap bitcoin? I would say that they have done an exceptional job of spreading FUD if that was the case.

Its amazing how many forum members come out of the woodwork claiming this is the end of Bitcoin, announcing class action lawsuits against MtGox, sending MK death threats etc. None of this is helping the situation.

STOP the FUD.

In my opinion Bitcoin is here to stay with or without MtGox!! Lets just get on with it.
9  Alternate cryptocurrencies / Altcoin Discussion / [ANN] New DOGECOIN POOL - www.MiningPool.co - 1 LTC Bounty first 5 Block Finders on: December 25, 2013, 04:34:16 PM
Dogecoin has been added to:

https://www.miningpool.co

As a starting bounty the first 5 unique block finders will receive 1 LTC bonus.

Current pool users enable Dogecoin on your settings page.

 Smiley
10  Alternate cryptocurrencies / Altcoin Discussion / Cryptsy Deposit Problems on: December 01, 2013, 07:12:37 AM
Anyone else having Cryptsy deposit problems again  Roll Eyes
11  Alternate cryptocurrencies / Altcoin Discussion / [ANN] Litecoin Online Wallet - https://CoinWallet.co on: November 15, 2013, 09:28:33 AM
Hi All -

Have launched our Litecoin online wallet service:

https://www.coinwallet.co

Low Fees
Secure
Easy to Use

Come and check it out.

Questions & comments welcome  Smiley
12  Alternate cryptocurrencies / Altcoin Discussion / [BOUNTY] - Megacoin Banner / Pamphlet Designs Wanted on: November 05, 2013, 02:08:21 PM
Calling on graphic designers. The Megacoin community is looking for banner and pamphlet designs that can be used by members to further promote Megacoin.

Bounties available.

More info here: https://forum.megacoin.co.nz/index.php?topic=15.0
13  Alternate cryptocurrencies / Altcoin Discussion / [ANN] OFFICIAL MEGACOIN FORUM - https://forum.megacoin.co.nz on: November 04, 2013, 12:15:37 PM
The Megacoin community is happy to announce the release of the Megacoin forum  Cheesy

https://forum.megacoin.co.nz

 Come and join in the discussion. Everyone is welcome!
14  Alternate cryptocurrencies / Service Discussion (Altcoins) / Cryptsy Two-Factor Auth Code Email Problem on: September 23, 2013, 04:47:10 PM
Anyone else not receiving the Two-Factor Auth Code via email from Cryptsy?

Have tried several times with no luck.. Worked before.
15  Alternate cryptocurrencies / Pools (Altcoins) / [ANN] www.MiningPool.co - Multi Coin Pool - Announcement / Update Thread on: September 06, 2013, 12:54:07 AM
Introducing MiningPool.co

https://www.miningpool.co

Pool features:

  • Custom made pool
  • Proportional payments - no pplns warmup
  • Multiple Currencies
  • Vardiff Stratum Servers
  • Multiple / Redundant Stratum servers
  • Comprehensive mining stats
  • Payouts every 5 minutes
  • API

If you would like a currency added that is not currently on the pool - please PM me.

This thread will be used to announce upgrades / changes and service status updates.

Happy mining!
16  Bitcoin / Hardware / @INABA / BFL_JOSH - When is my order going to ship? on: August 26, 2013, 08:35:41 PM
Hi Josh -

I ordered a 5GH/s Miner on the 6th of May.

When I ordered I was assured it would be delivered by July.

On August the 8th I asked for a refund and on August the 15th I was told this would not be possible.

So can you please tell me, simply, when my order will finally ship and what possible reason there could be for orders taking so long?

I am tired of reading through pages and pages of abuse and conspiracy theories - can you simply answer my question?

Thank you.
17  Alternate cryptocurrencies / Service Discussion (Altcoins) / Cryptsy down again? on: July 20, 2013, 03:03:35 PM
Getting an error page trying to connect to Cryptsy..

Anyone else seeing this?

18  Alternate cryptocurrencies / Altcoin Discussion / [ANN][MEC] MegaDice.co.nz - MegaCoin Dice Game on: July 07, 2013, 12:22:33 PM
Announcing the MegaCoin dice game:

http://www.megadice.co.nz

Quick payouts
No Account needed
2% house edge

Why not give it a try today!
19  Alternate cryptocurrencies / Altcoin Discussion / What new services would you like to see for MegaCoin / MEC? on: July 06, 2013, 02:23:21 AM
Given the way MegaCoin has been taking off on Cryptsy lately, thought it might be good to start a thread about what services people would like to see developed for this highly undervalued coin?

I reckon an Android and iPhone wallet would be good?

What else?
20  Alternate cryptocurrencies / Altcoin Discussion / [ANN] FTCDice.com - Satoshi Dice Game For Feathercoin on: June 30, 2013, 02:37:58 PM
Introducing FTCDice.

http://www.ftcdice.com

Come and give it a try today!

Note: Please make sure your wallet is compatible (see details in 'How to Play' tab)
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