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1  Other / Meta / How is Defamation / Slander handled on Bitcointalk? on: September 28, 2014, 05:02:57 PM
I was wondering what the policies regarding slander / defamation are forum-wide. Are there any paths to follow to request rectification and/or removal?

I am asking because there are two slanderous topics regarding my nickname on here, one calling me an outright criminal and the other calling me a scammer. I can handle unfounded abuse by other people and they have their right to free speech, but things get more serious when one-liners like "Boxman90 = CRIMINAL" start showing up on Google.
2  Economy / Service Discussion / Bitstamp TX Fee Exploit - Fee 1.16% instead of 0.2% [Bitstamp Fixes on May 15th] on: May 06, 2014, 11:07:34 AM
Edit 09-05-2014: Bitstamp is increasing their trading limit to $5 on May 15th, after which the exploit as described in this post will no longer be possible.

After a response from Bitstamp, this post has been slightly edited. Bitstamp replied to my inquiry and I will discuss Bitstamp's response at the end of this post.

I want to bring this all to your attention, because everyone trading at Bitstamp is affected negatively by a faulty implementation of the Transaction Fee Calculation on Bitstamp's side, which by definition always favors Bitstamp. At the moment this bug appears to be 'by design', but can be easily fixed.

Bitstamp rounds their transaction fee off to the nearest cent decimal upwards. If you have a transaction of $11, the fee (0.002*13) is $0.022, which gets rounded off as $0.03. This is mentioned clearly in ther Terms of Service and I think that's okay.

The bug/faulty implementation:
The essence of this bug lies with the minimum order limit in combination with their fee rounding policy. Bitstamp's minimum order limit is $1. Because it is possible to place an order at 20% above market price, the effective minimum order limit is $0.86. A $0.86 order at 0.2% fee should be charged 0.002*0.86= $0.00172, which, due to their rounding, gets rounded off to $0.01. This is almost 6 times the actual fee. The problem is that this stacks up, leading to an actual exploit that always favors Bitstamp:

The actual exploit:
You place a sell wall at a certain price, agreeing upon 0.2% fee over that entire sell wall. A system/bot repeatedly makes many of the tiny buys into your BTC sell wall. Each of that buys is charged with 6 times the accepted fee. When this continues untill your sell order is completed, you will have effectively paid 6 times the fee over the entire sell order, instead of the 0.2% you thought.

Hypothetical Example:

When I put in a sell order of 20 bitcoins at $432.01, and some bot for some reason makes a LOT of mini tiny buys into it, you get an enormous fee percentage as a result. It is important to note that I as a seller have no control over the way somebody buys into my order! I am powerless then, and moreover I did not consent to having my order bought in increments that are so small that it disadvantages me while it sends 6 times the fee to Bitstamp. This system makes that fee 1.16% instead of 0.2%. This problem affects everyone.

I just had a 20 BTC sell order there. This bot for some reason buys into it with many tiny buys, each buy worth 0.86 USD. Every one of them get's a transaction fee of 0.01 USD because of their rounding. The proof is below. This example is hypothetical because I did not let the bot eat my entire wall that way, I pulled the order before he got that far.

In essence this 'trick' makes me pay a fee of 0.86/0.01*100% = 1.16 PERCENT. While I'm entitled to a transaction fee of 0.2%.

Everyone affected by these tiny buys/sells is charged almost 6 times the money. Let that sink in guys. A transaction fee of 1.16 percent because their system allows too small orders. They force this upon you and essentially, (by intentional design or not, it doesn't matter, you are at heavy disadvantage) take your money illegitimately due to this transaction fee bug/misimplementation.

Hypothetical calculation example:
Say I wanted to sell 20 BTC at $432.01, and it is bought completely by these mini buys:

The fee of this transaction should be 0.002*20*432.01 = $17.28
Due to the trick, actual fee is: 0.0116*20*432.01 = $100.23

Fee I agreed on when putting in sell order: $17.28
Actual fee that would be paid due to the exploit: $100.23

Bitstamp illegitimately takes 83 dollars in this scenario

As I said, I didn't let it come that far, I pulled my order before it could eat through my order that way.

Picture below is proof of the behavior.

Proposed fix: Make $5 orders the minimum for both API and Web interface. Preferebly $6 to also avoid exploits through setting orders above 20% of current market price. Then all problems are solved


Bitstamp did reply to my inquiry about their transaction fee calculation.

The rounding up which occurred in your case was in accordance with our notice provided in the Fee schedule section of our website. Fiat currencies, unlike Bitcoin, have two decimal places, therefore the smallest fee Bitstamp can charge for its services can never be below $0.01.

Bitstamp does not sell or buy bitcoins nor does it manipulate how orders are executed. If a sell was executed for one client (you in this case) this means that another Bitstamp client had his buy order executed on the opposite side of the trade.

As you are probably aware that "If you try to commit an order with price greater or lower than 20% of the current market price, our system will ask you for additional confirmation." (available in our FAQ: Due to such actions, it is sometimes possible that a user can perform a trade which is lower than $1 in value when placing an order which is higher than the market price at the time when it was executed.

They further explain their rounding policy, which is fine, but did not explain (yet) why the order limit is then not $5 so that the exploit as mentioned in this post cannot happen. The fact remains that an order limit of $1 in combination with the rounding off to $0.01 causes any order of $1 or smaller to be charged five times the fee.

Whether or not the low $1 order limit is intentional in order to harvest these fees or not, I will leave upon you (the community) to decide. The willingness of Bitstamp to change the order limit will show us as a community if it is intentional or not.


Edit 09-05-2014: Bitstamp is increasing their trading limit to $5 on May 15th, after which the exploit as described in this post will no longer be possible.
3  Economy / Currency exchange / [WTB] GoxUSD for real BTC on: February 21, 2014, 10:56:49 PM
I'm buying your GoxUSD at current Bitstamp price.

Once a deal is reached, you can just buy GoxBTC at the market price for the transfer of the funds to my account (so i can immediately sell for GoxUSD).

Make me an offer in PM.
4  Economy / Speculation / Huobi volume dropped like A ROCK on: January 08, 2014, 09:11:49 PM
Anybody else notice this? Huobi volume is suddenly almost nonexistent, after days of multiple thousands BTC per 15 minutes.

I wonder if their volume was fake after all  Cheesy
5  Local / Markt / [WTS] Tot 5 BTC. Betalen met ING bankoverschrijving on: December 27, 2013, 06:54:27 PM
Aanbod vandaag en morgen geldig: tot 5 bitcoin voor de huidige MtGox koers omgezet naar Euro.

Betalen met ING bankoverschrijving voor direct overschrijven.

Afspreken op skype voor directe afhandeling mogelijk. Afhandelen van transactie in kleine batches ook mogelijk.

Stuur me 'n PM.
6  Alternate cryptocurrencies / Altcoin Discussion / [WTS] Kittehcoin [MEOW] on: December 27, 2013, 01:19:29 AM
I've got about 950.000 Kittehcoin available, holding the rest for myself. Will send smaller batches as well.

PM me with your offers.
7  Alternate cryptocurrencies / Altcoin Discussion / [WTS] 150 Catcoins on: December 25, 2013, 10:25:55 AM
Selling 150 Catcoins. Asking 0.15 BTC. PM me.
8  Alternate cryptocurrencies / Altcoin Discussion / [WTS] 250k MEOW - Kittehcoins. PM me with offers on: December 24, 2013, 09:19:38 PM
As the title says. 250k MEOW available.

9  Alternate cryptocurrencies / Altcoin Discussion / [WTS] 1000 Catcoins on: December 24, 2013, 04:09:25 AM
Selling 1000 Catcoins, pm me with offers.
10  Economy / Service Discussion / Bitstamp auto-logout at crucial moments on: December 19, 2013, 11:13:05 AM
I'm a day trader, I make money off the tiniest moves and need to be able to react within seconds. When a big rally comes, I'm especially in the money.

Some moments ago the price shot up about 20 USD. I had been trading all morning, had my finger on the buy trigger into a sell wall where it would shoot up through. My cue came, and I clicked buy - next thing i see is the god damn login screen.

Needless to say I hugely missed my window due to having to login and get my 2fa again. This cost me a few hundred dollars.

Has anyone else experienced this? I'm just warning you guys, these are sketchy occurrences. One should not be auto logged out if he's showing activity all morning.
11  Economy / Speculation / GoxLoop™ discussion / speculation on: December 06, 2013, 07:20:30 PM
So, a massive GoxLoop is going on.

What is GoxLoop?
Gox rewinds the orderbook periodically (6 times as of now) during a massive sell event, and replays the trades that happened in the duration of one loop. Any orders placed during the GoxLoop cannot be cancelled. Any orders placed during the GoxLoop will most likely go through after Gox decides to end the GoxLoop.

ITT: Theories, speculations, as to motivations for GoxLoop.

My theories:

- Massive market sell triggered GoxLoop so Gox can sell elsewhere while the price is still high
- Gox lets the loop run for as long as it takes them to move BTC elsewhere (be it another exchange, or w/e) for their profit.

Legal complications?

Please also discuss whether or not this is legal, and if Gox operators could suffer legal consequences, even though this market is unregulated. Would it be legal in the EU/US to do this?

12  Economy / Speculation / Hypothesis: BTCChina is completely fake (with evidence) on: November 19, 2013, 04:18:19 AM
More and more am I starting to believe that BTCChina is (for a large part) fake.

- Their volume reports are ridiculous. On the 3 minute chart they have almost exclusively 300 btc per candlestick.
- The whole rise-up at BTC-China seems orchestrated. Every sharp rise is nicely crafted into a short dip which then recovers in order to make others believe that it's safe to buy

And most compellingly

- During the crash the volume stays _THE SAME_ throughout. There is a sharp drop, but no panic selling at all! The volume is constant. This does not make any sense to me.
- Notice how every downward candle towards is also attempted to be caugt immediately - many many intermittent recoveries during a crash. It just doesn't make sense.
- I think we all agree that the price movements at BTCChina have been absolutely ridiculous.

It's almost as if the whole exchange is scripted to make fake orders to amplify any movements seen on Gox. Zero trading fees would allow this.

What would they benefit from this?

Manipulation. This whole rally is based upon "China is going crazy, we must buy asap!". Knowing that the bitcoin world classifies exchanges by price and volume, you can manipulate the entire market by gaining the highest price and the highest volume. This does not mean the trades have to be legitimate as well, as long as the data you're outputting is somewhat believable. The rally on china seemed so ridiculous, that I'd be inclined to think that BTCChina's CEO has some big money at the other exchanges, trading it for high prices as he indirectly has control over the market.

Added facts:

- Nobody seems to be able to access, yet trades are still being executed (do reply if you can reach and deposit BTC)
- During the 7-8 hour Gox trading engine lag, BTCChina ground to a halt as well while BTC-e and Bitstamp continued to have organic trades (though lower average volume).
- Look at this recent crash graph from BTCChina (linked from another topic). It does not look organic, yet highly artificial.

Please discuss Cheesy Also, === I'm merely speculating ==
13  Economy / Service Discussion / [BUG]ClarkMoody - user-side possible bug occurence. on: November 14, 2013, 12:27:40 PM
ClarkMoody is manipulating (by accident or on purpose, doesn't matter) the volume figures by a factor of SIX.

It seems to be a user-side bug. I'm not sure how many people are hit by it. If you're seeing multiple orders passing by in the orderbook, know that something is amiss and any volume figures you're seeing are not real.

I compared the figures reported by Clarkmoody to bitcoinwisdom after smelling bullshit, and well there we go:

Large version:

As I know, Clarkmoody is a highly popular live MtGox Price monitor used by many many people. BTC-e seems to go absolutely crazy for MtGox still, while their volume is actually really really low. MtGox traders may be easily influenced as well. Bitstamp seems to react with 100's to 1000's of BTC to any move on clarkmoody.

ClarkMoody just reported two buy frenzies of >1000 BTC, while the actual volume was merely 200 BTC.

I would say this is a rather big an issue, and it should be stickied. for that reason. Also maybe delisted from the list of useful sites for speculators.

Sorry for crossposting this across multiple forums, but traders should be aware of this issue.
14  Economy / Speculation / [BUG] Speculators using ClarkMoody on: November 14, 2013, 12:25:15 PM
ClarkMoody is manipulating (by accident or on purpose, doesn't matter) the volume figures by a factor of SIX.

It seems to be a user-side bug. I'm not sure how many people are hit by it. If you're seeing multiple orders passing by in the orderbook, know that something is amiss and any volume figures you're seeing are not real.

I compared the figures reported by Clarkmoody to bitcoinwisdom after smelling bullshit, and well there we go:

Large version:

To me, clarkMoody just reported two buy frenzies of >1000 BTC, while the actual volume was merely 200 BTC.

15  Alternate cryptocurrencies / Altcoin Discussion / Is namecoin really hacked/compromized/dead? on: October 15, 2013, 11:44:51 AM
Check this topic

He stated he can just take over any already registered domain, renting NMC worthless. What do you all think of this?
16  Economy / Service Discussion / BTC-e Volume bars - Bug or manipulation? on: October 14, 2013, 05:27:05 PM
Take a look at this:

Take note of the volume bars, particularly the last 10 or so. They are showing >500 and even >1000 BTC of volume for each half-hour slot the graph depicts.

Now take a look at this:

This pic shows the actual volume as recorded by each hour. Way, way lower.

Every time the volume at BTC-e takes a jump, the orderbook is flooded with hundreds of tiny transactions, like so:

Now, you tell me. Is this a bug? Is it manipulation to make it look like BTC-e has good volume?

Can we trust their volume bars?

17  Economy / Computer hardware / [WTS] Sapphire 7970 Vapor-X OC 11197-03-40G - voltage unlocked - EUROPE BASED on: September 03, 2013, 08:31:46 AM
I'm selling 11 Sapphire 7970 Vapor-X OC videocards.

Mining is no longer profitable with the ridiculous (~0.28$/kwh) where I live.

I'm based in Europe, but will ship worldwide. Shipping costs are for the customer.

The price is 2.9 BTC per card.
18  Economy / Service Discussion / BTC-e "server error" after their 'upgrade' - cannot login - cannot access funds on: August 20, 2013, 11:38:49 PM
After BTC-e's recent botched server update, which took about 4 hours longer than the planned 1 hour, I am unable to login.

I get a dreaded "server error" upon trying.

Did BTC-e lose my account? I had a significant amount of funds over there.

Anyone else experiencing similar problems?

Edit// after trying 10 more times, I finally got through. All funds seem to be accounted for.
19  Economy / Auctions / [AUCTION] 219 Avalon chips - steamboat batch 4, 28 may - BELOW COST - 0.066 each on: August 20, 2013, 05:22:27 PM
Because I no longer have the money to put these on boards, I'm selling my order of 219 chips @ steamboats groupbuy.

I paid 18.834 for the complete order, I'm now selling the entire order for 14.5 BTC.

Once paid, I will ask steamboat to change the shipping address to your details. Note that you still need to pay shipping costs for the chips from steamboats group-buy. This can be arranged through me as well.

You can only buy the complete order at once. Send me a PM for payment details if interested.
20  Economy / Goods / [WTS]219 Avalon chips - AT COST steamboat's groupbuy, Batch #4, ordered May 28- on: August 15, 2013, 01:42:59 PM
I'm looking to sell my 219 chips that I ordered from steamboats group buy. I'm in Batch 4, which was ordered and paid on May 28, so relatively early.

Cost price was 18.834 BTC, so I'm selling for that price. PM me if you're interested. I'll contact steamboat regarding the change of address once we've made a deal.

Escrow services are an option if needed.
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