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Author Topic: [ANN] Crypto X Change : Pre-Launch Challenge : Bitcoin Prizes  (Read 1089 times)
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Crypto X Change

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October 29, 2011, 12:03:38 PM
Last edit: October 31, 2011, 05:04:09 PM by cryptoxchange

Dear Bitcoin Community,

We invite you to take the Crypto X Change pre-launch challenge featuring 225 Bitcoins in prizes!

About Crypto X Change:
We are the newest Bitcoin exchange, based near Sydney, Australia. Our exchange features deposits and withdrawals to any bank in the world within 24 hours in 25+ currencies. You can learn more about our security features, bullion store, and company information at

The Challenge:

Step 1: Create an account and get free test funds
What could you do with $100,000 in a Bitcoin exchange? Here’s your chance to find out.

We're funding all accounts with fake Bitcoin, Namecoin, LiteCoin, USD, AUD, and INR account balances.

Step 2: Try to break our security! Hack. Smash. Destroy.
We invite you and the rest of our brilliant community to do your best to find security issues.

Step 3: Collect your prize
• 1st Place: 125 Bitcoins
Most serious hack.
• 2nd Place: 75 Bitcoins
Highest net worth balance at November 1st, noon Sydney time.
• 3rd Place: 25 Bitcoins
Given at random for a helpful functionality suggestion.

Note: Prize awards made at sole judgement of Crypto X Change

• Choose a real account name.
When we go live with real funds, all pre-launch balances will be reset but you can keep the account.  Former pre-launch balances have been reset as of this message.

• We’ll fight back!
We encourage all types of hacking attempts. However, our system may fight back. DDOS attacks may be automatically detected and result in banned IP's. If your IP is blocked, contact us.

• Yubikey!
All Yubikey's can be used with the exchange, including MtGox Yubikey's, even during the challenge, so feel free to set yours up in the system.

• Public API coming soon.
It will be available very shortly - get your bots ready Smiley .

Excellent customer service is important to Crypto X Change: we have 24 hour live support available both pre- and post-launch.

Have fun with the TestNet!
Create your account here:

The Crypto X Change Team
+6128 005 0602

Crypto X Change Global Bitcoin Exchange - Deposit & Withdraw to and from Our Exchange now for a $5 Flat fee - No Wire Costs or Bank Fee's - 100% Automated Banking System & Extremely fast transfers. We can send out Withdraws to over 120 Currencies.
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There are several different types of Bitcoin clients. Server-assisted clients like rely on centralized servers to do their network verification for them. Although the server can't steal the client's bitcoins directly, it can easily execute double-spending-style attacks against the client.
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September 27, 2012, 02:48:06 AM

I'm concerned about the NMC->BTC options

Please see my thread I listed the exchange

and correct any errors and tell me why it doesn't show NMC price it just shows "I'll buy X amount of NMC coins for X amount BTC coins" making users do their own math (referring to bid list for BTC/NMC)

Donations: 1JVhKjUKSjBd7fPXQJsBs5P3Yphk38AqPr - TIPS
the hacks, the hacks, secure your bits!
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