Is this a real thing?

[JVAlternate]

I was doing some research on Double Spending and stumbled on this site: glasshunt.co/exploits/bitcoin-double-spend/

They claim they allow for easy double spending?  Is that a thing?

It seems pretty legitimate but I'm not sure if it's safe.  I want to do some looking into how this works before allowing people to use Bitcoin on my blog website and things like this kind of worry me.  How would someone use a site like this?  Do they work? 

Thought I saw some stuff about Ethereum too.  Can you double spend an ethereum too?

Using an Alt also since I think this might be a sensitive subject...

[1713275201]

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[merelcoin]

I was doing some research on Double Spending and stumbled on this site: glasshunt.co/exploits/bitcoin-double-spend/

They claim they allow for easy double spending?  Is that a thing?

It seems pretty legitimate but I'm not sure if it's safe.  I want to do some looking into how this works before allowing people to use Bitcoin on my blog website and things like this kind of worry me.  How would someone use a site like this?  Do they work?  

Thought I saw some stuff about Ethereum too.  Can you double spend an ethereum too?

Using an Alt also since I think this might be a sensitive subject...

Seems fishy to me:

step 1: send bitcoins to our address, wait untill the transaction is confirmed  
step 2: we'll pay for your goods/service, and double spend the inputs with an output to your address...

As soon as the transaction from step 1 is included in a block (confirmed), it's next to impossible to do a double-spend unless there's a fork that didn't include your transaction... At this point, you're at the mercy of the website, since they now have your coin, and there is no way to charge back.
This means the service should do the complete double-spend for you, holding on to your funds as collateral, or using the inputs from step 1... However, there is no guarantee they'll actually do this, so it might be a scam attempt (altough this is not confirmed!!!)

On the other hand, it IS rather simple for anybody with a little bit of technical knowledge to succesfully create a double spend, just not using that website.

[Jeremycoin]

This site is completely a Scam, don't even try to do that. Maybe this site looks appealing, but it doesn't mean that this site can be trusted.

[erickkyut]

If something is too god to be true, then it is not true! That is one of the lessons I learned from my professor in college! If you are not sure of it, then avoid it.

[~Bitcoin~]

I don't think what they offer is real, never heard about them but i know little about double spending. They have also not explain clearly what they actually offer. Even with double spending only one transaction will be confirmed so getting same bitcoin in two addresses is not real. Most of the services wait till transaction get confirmed or check atleast priority of transaction according to transaction fee used before confirming any payment to them.

I think this could be scam attempt.

[Senor.Bla]

you basically give them your money and they might decide to just keep it and you could do nothing about it. but they just might send you some money to "prove" that it works in the hope that you believe it and invest net time more. but this time you never hear from them again. classic scam imho.

[Capradina]

I was doing some research on Double Spending and stumbled on this site: glasshunt.co/exploits/bitcoin-double-spend/

They claim they allow for easy double spending?  Is that a thing?

It seems pretty legitimate but I'm not sure if it's safe.  I want to do some looking into how this works before allowing people to use Bitcoin on my blog website and things like this kind of worry me.  How would someone use a site like this?  Do they work? 

Thought I saw some stuff about Ethereum too.  Can you double spend an ethereum too?

Using an Alt also since I think this might be a sensitive subject...

I don't know for sure what they did with the funds they get and returns with the way which is pretty fun. But for sure I see that it has the possibility that they were using the system a ponzi or hyip, whether it's true or not but I have confidence that the site has only a very short time

[Senor.Bla]

I don't think what they offer is real, never heard about them but i know little about double spending. They have also not explain clearly what they actually offer. Even with double spending only one transaction will be confirmed so getting same bitcoin in two addresses is not real. Most of the services wait till transaction get confirmed or check atleast priority of transaction according to transaction fee used before confirming any payment to them.

I think this could be scam attempt.

to make this more clear. you can double spent your coin, but only the transaction that will be confirmed and and up in the blockchain really happend so to speak.
this might mean that either you get your money back or the person you want to pay gets the money (in that case the result is the same as a normal transaction).
but if the person does not wait until the transaction is in the chain and they send you your goods, then you basically ripped them off, since they do not get the money in the end.

so what this can not do is doubling your money by sending bitcoin to two addresses.

[pearnapple]

I was doing some research on Double Spending and stumbled on this site: glasshunt.co/exploits/bitcoin-double-spend/

They claim they allow for easy double spending?  Is that a thing?

It seems pretty legitimate but I'm not sure if it's safe.  I want to do some looking into how this works before allowing people to use Bitcoin on my blog website and things like this kind of worry me.  How would someone use a site like this?  Do they work? 

Thought I saw some stuff about Ethereum too.  Can you double spend an ethereum too?

Using an Alt also since I think this might be a sensitive subject...

first of all it is going to be a scam most probably, secondly it is illegal to do that and thirdly there are no websites that accept bitcoins without confirmations

[proce55or]

This might be true, but it did not work for me. I sent a small amount 0.011 BTC and the system accepted it. Then I tried to send it to my second wallet and then try to get it back, but at this step there is a warning that "something went wrong". So my funds had reminded in the address they provided, so I decided to get it back. At first there was a wrong Private Key, so I thought, sh*t I had been scammed, but then I reloaded the page at the 1st step and there was a correct private key, so I uploaded it in the blockchain.info wallet and indeed received my funds and sent it to my standalone wallet. This is the transaction: https://blockchain.info/address/1FZs5k3GA8Hn4bAyHX5MeW9rCDxbyKNejz

[zenitzz]

I've experienced double spend but if the transaction not get confirmation would back to the sender's address and not recorded as transactions ever done.

[rphk]

this looks like scam kind of thing , may be you try ones and again trying may not get back your bitcoin , best is to research before sending bitcoin on those and if it is legitimate and trusted then it should be ok.

[pcoin]

http://www.glasshunt.co/exploits/bitcoin-double-spend/#1DEifzQXtshynK though this is a beautifully made website but nothing good can come from them because it is just a money doubler ponzi site.

[BitcoinSupremo]

What a perfect way to get uninformed persons coins so easily. Double spend cannot happen if 1 confirmation is confirmed in the network. Double spend with some tweaks can happen only when the transaction has 0 confirmation and the user knows how to create an exact same transaction with the same amount to spend somewhere else. This is called cheating and it won't get you far.

This is new way of scamming apparently. Stay away.

[proce55or]

This might be true, but it did not work for me. I sent a small amount 0.011 BTC and the system accepted it. Then I tried to send it to my second wallet and then try to get it back, but at this step there is a warning that "something went wrong". So my funds had reminded in the address they provided, so I decided to get it back. At first there was a wrong Private Key, so I thought, sh*t I had been scammed, but then I reloaded the page at the 1st step and there was a correct private key, so I uploaded it in the blockchain.info wallet and indeed received my funds and sent it to my standalone wallet. This is the transaction: https://blockchain.info/address/1FZs5k3GA8Hn4bAyHX5MeW9rCDxbyKNejz

I've contacted the Glass Hunt team regarding the issue (decribed above) and that's their reply:

We have found the cause of most failed attempts. If your transaction has multiple inputs, then double spending does not work. Some people have been sending from exchanges and they bundle transactions together for withdrawals. So, if you try with a plain ol' Blockchain or Coinbase wallet, it should work.
Please let me know if you have any further issues.

[DarkStar_]

Double spend cannot happen if 1 confirmation is confirmed in the network. Double spend with some tweaks can happen only when the transaction has 0 confirmation

Please stop spreading false info with your posts. I know you might be busy getting your 20 posts done today, but you could cause someone to get scammed.

Double spends can happen with 1 confirmation or even more, but more than 1 confirmation double spends are incredibly hard to do and will probably require you owning a decent chunk of the bitcoin network's hashing power. A 1 conf double spend could happen if your tx was picked up by a block, which most nodes got first, but the block is orphaned and the new block doesn't contain your transaction. This will bring it back to unconfirmed, allowing the person to double spend. The chance of this happening is very low, but it is a risk.

[Cast12]

What will you let people use bitcoins on your website for? I think that you can protect yourself from double-spends by accepting transactions that have been confirmed more then one time instead of 0 confirmation deposits.

[altcoinrich]

They asked us to deposit to their addresses. If people deposited bitcoins there, they will be scammed. Double spend is difficult to handle.

[veleten]

https://steemit.com/bitcoin/@bkkshadow/bitcoin-double-spend-is-the-glass-hunt-exploit-a-scam

of course it is a scam,what else could it be?
if the site is able to double spend WHY WOULD THEY WANT your puny 100k+deposits? 10% fee? probably the best way to get paid for other people's curiosity
not even taking into account that it is immoral and illegal to try and doublespend knowingly...
it is equal to an attempt to steal

[ethereumhunter]

there is no ways to get much with easy ways and we should know about this. if you want to get much, then you must doing some work, and increase your capability and your strength to get some bigger work then you can get much reward for this.