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Author Topic: [2019-10-24] Lightning Network User Reportedly Loses 4 Bitcoin: What Happened  (Read 346 times)
NibiruHybrid (OP)
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October 24, 2019, 07:11:18 PM
 #1


Lightning Network User Reportedly Loses 4 Bitcoin: What Happened


Dr. Darren Tapp Research Assistant Professor at Arizona State University Blockchain Research Lab explains what happened to the users reported loss of 4 Bitcoin when using the Lightning Network.

A Lightning Network user reportedly lost 4 Bitcoin, but don’t call it weird.

The original design of Bitcoin had a user submit a transaction to any node. That node would share the transaction around the whole network, and the transaction would almost always be included in a block that is secured with proof of work. Subsequent blocks would be found, each one increasing the amount of work needed to reverse the payment. This setup created an abstractly beautiful game theoretic solution where a bad actor would have incentive to support the network instead of attack the network. In the literature we have called information that is included in a block as part of a growing blockchain to be under a Nakamoto Consensus.

The Lightning Network supports metadata associated to the blockchain, though this metadata is not secured by a Nakamoto Consensus. In theory, this metadata could be secured and updated on chain from time to time. In practice, this can be costly/difficult due to on chain restrictions of Bitcoin.

How the Lightning Network works


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October 24, 2019, 08:30:18 PM
 #2

It's from Dash. And at the top it clearly says "Opinion". (Nothing wrong with Dash, but maybe the news would look better if it came from somewhere else.)

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October 24, 2019, 08:31:10 PM
Merited by Foxpup (3), ABCbits (2), d5000 (1), TheBeardedBaby (1)
 #3

tl;dr

  • user wanted to close a channel
  • user sent the wrong tx, an old one (always use the newest to close any channel)
  • the other side of user's channel automatically assumed this was a cheating attempt
  • it's in the smart contract that you lose everything if you close using an old tx

moral of the story: don't sign a smart contract if you're, uh, not smart Grin

seriously though, even one of the Lightning devs did this accidentally one time, although I don't think 4 BTC was lost (really, 4BTC? this person was taking the whole reckless thing too far)

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October 24, 2019, 08:37:59 PM
 #4

Thank you for the TLDR, I wonder if they'll publish a story every time someone does something stupid.

e.g.  Person using the euro fiat network loses 40,000 euros after they burn the money while trying to start a campfire.
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October 24, 2019, 08:48:01 PM
 #5

Thank you for the TLDR, I wonder if they'll publish a story every time someone does something stupid.

e.g.  Person using the euro fiat network loses 40,000 euros after they burn the money while trying to start a campfire.

It doesn't even make any sense to use LN with that big amount. You should only use LN for coffee purchases (by coffee I mean all the crap which sells for ~$5-10.)

Max. you should put on LN is $500 and that's if you are a risk taker. Normally $200 would do great. If you are putting 40k on that thing you are insane or dumb or both.

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October 24, 2019, 09:27:15 PM
Merited by Kakmakr (1)
 #6

Max. you should put on LN is $500 and that's if you are a risk taker. Normally $200 would do great. If you are putting 40k on that thing you are insane or dumb or both.

You could use these analogies:

How much cash do you take with you in your wallet? $500 max really, anything can happen, and everyone can see the giant stacks of high value bills every time you open it if you do

How big a credit card limit do you agree to when it's 1968 when credit cards are brand new? Not so big, it's new tech, and you're responsible for the tab if anything goes wrong


So when it's one new form of tech (Bitcoin) with another riding on top (payment channels), AND everyone tells you it's inherently risky too, well, I'm not sympathetic to this person, let's put it that way

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October 24, 2019, 10:07:28 PM
 #7

That's a huge money to risk. He shouldn't have done that because Bitcoin network right now is not that congested. Besides few people are using Lightning Network because they know the risk or even the normal transactions. They're irreversible. I don't know that Bitcoin is using Lightning Network now. Thestakes on the user's end. Not the network itself. Maybe he send to a wrong address and didn't even check if it's the correct address.
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October 24, 2019, 11:51:42 PM
 #8

tl;dr

  • user wanted to close a channel
  • user sent the wrong tx, an old one (always use the newest to close any channel)
  • the other side of user's channel automatically assumed this was a cheating attempt
  • it's in the smart contract that you lose everything if you close using an old tx

moral of the story: don't sign a smart contract if you're, uh, not smart Grin

seriously though, even one of the Lightning devs did this accidentally one time, although I don't think 4 BTC was lost (really, 4BTC? this person was taking the whole reckless thing too far)

I've read this story on reddit yesterday, apparently the guy was running a lightning casino and closed a lot of channels simultaneously, which together resulted in 4 BTC.

Imo it's kinda sad when a software can lead to such catastrophic events just by doing regular user actions. I haven't used any LN client wallet in a while, but I think they all should have a warning with big red letters saying that you'll lose your funds if you try to close a channel and it happen to be stale.

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Carlton Banks
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October 25, 2019, 12:27:32 AM
 #9

Imo it's kinda sad when a software can lead to such catastrophic events just by doing regular user actions. I haven't used any LN client wallet in a while, but I think they all should have a warning with big red letters saying that you'll lose your funds if you try to close a channel and it happen to be stale.

they're almost all CLI programs, we can safely assume this particular casino operator was not running their wallet using Zap desktop.

and when you're running CLI programs, the warning is implicit: you are using potentially dangerous tools that are powerful enough to let you do something calamitous, and so you must assume full responsibility for every action you choose. If you don't understand everything you're doing, that's fine, many people do not, but you're still responsible for everything good bad or indifferent that happens once you press the enter key.

this person could've accidentally dd wiped their server disk (not an uncommon mistake) containing the whole website. Should dd come with warnings to back everything up and check which device/partition is being written to? Certainly not.

Vires in numeris
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October 25, 2019, 03:30:14 AM
 #10

Thank you for the TLDR, I wonder if they'll publish a story every time someone does something stupid.

e.g.  Person using the euro fiat network loses 40,000 euros after they burn the money while trying to start a campfire.

It doesn't even make any sense to use LN with that big amount. You should only use LN for coffee purchases (by coffee I mean all the crap which sells for ~$5-10.)

Max. you should put on LN is $500 and that's if you are a risk taker. Normally $200 would do great. If you are putting 40k on that thing you are insane or dumb or both.

One thing is sure no media will ever cover the story of "fiat network loses 40,000 euros after they burn the money while trying to start a campfire" because that would not be interesting at all but they can be all ready to publish a similar story that took place using Bitcoin or maybe any cryptocurrency for that matter. Media crypto-related or not are always vying for eyeballs so they need to use attention-getting headline and story as much as possible. But I guess we already know this.

Well, the story above is a clear indication that some people are not really attuned with their free and always available common sense. Why would you risk using 4 Bitcoin for a transaction like that using LN when you can use a small amount (as what LN is designed to do). Some people can really be a little stupid and we can all celebrate that stupidity in the media and even in this forum (so we can learn the big lessons).


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October 25, 2019, 07:18:20 AM
 #11

Max. you should put on LN is $500 and that's if you are a risk taker. Normally $200 would do great. If you are putting 40k on that thing you are insane or dumb or both.

You could use these analogies:

How much cash do you take with you in your wallet? $500 max really, anything can happen, and everyone can see the giant stacks of high value bills every time you open it if you do

How big a credit card limit do you agree to when it's 1968 when credit cards are brand new? Not so big, it's new tech, and you're responsible for the tab if anything goes wrong


So when it's one new form of tech (Bitcoin) with another riding on top (payment channels), AND everyone tells you it's inherently risky too, well, I'm not sympathetic to this person, let's put it that way

Damn, I just had to give you 1 merit for that answer, because it was 100% spot on.  Wink

As a previous victim of credit card fraud, I can tell you that credit cards and debit cards are more prone to losses, because they only need to get a 3 or 4 numbers at the back of your card to empty it.

I recently also had a friend who got his debit card stolen and someone just used the "tap to pay" function and tapped it 9 times without the need for the pin and withdrawn a large amount of money. <They have a limit of $20 on tap payments, but you can tap it a lot of times within 24 hours, before the card are flagged.>  Roll Eyes  --> He only realized that the card was gone after a few days has past.

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October 25, 2019, 06:28:33 PM
 #12

There is no case to try out buggy new experiments when good old proven BitCoin works fine.

Bitcoin SV does the job like a champ

Don't fuck up the DNA that made it all happen

Scale it

Use it

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October 25, 2019, 07:26:43 PM
 #13

There is no case to try out buggy new experiments when good old proven BitCoin works fine.
I can come up with plenty of cases to try Lightning. It's important to take into consideration that no one is forced to use Lightning. If you use Lightning anyway, then you should bear any losses that may be either your own incompetence that lead to that happening, or due to an actual bug, because you're dealing with beta software at the end of the day.

Bitcoin SV does the job like a champ
What job do they do well? Scaling into oblivion without any real world demand for their block space? The transactions they are currently processing are all automated applications trying to make their network look busy while in reality nobody is using it.
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October 25, 2019, 08:44:42 PM
 #14

It's from Dash. And at the top it clearly says "Opinion". (Nothing wrong with Dash, but maybe the news would look better if it came from somewhere else.)

It's from reddit originally.

seriously though, even one of the Lightning devs did this accidentally one time, although I don't think 4 BTC was lost (really, 4BTC? this person was taking the whole reckless thing too far)

And if that's not the worst, some of the money he lost wasn't even his:

"Sold my apartment and should work few years more to bring those money back... because some of them are not mine."

https://old.reddit.com/r/Bitcoin/comments/dlvokv/how_i_lost_4_btc_on_lightning_network/f4upr7t/?context=3

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October 26, 2019, 12:16:50 PM
 #15

It's like all these cases I read about people accidentally sending 1 BTC or 10 to the wrong address, accidentally paying 1 BTC fees, or all these accidents.

I have not once made a mistake in over 3 years of transacting, and I don't mean to say that I never will, we all are human after all, but if I'm careful sending a few dollars for a tip, I'd be damned sure I know what I'm doing if I'm playing around with 4 BTC!

Anyway, if the other side of the channel closed it, they got it, right? They can send it back nicely I'm sure=p

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October 26, 2019, 08:15:00 PM
 #16

New thread about this story on reddit: https://wr.reddit.com/r/Bitcoin/comments/dn5520/how_4_btc_on_the_lightning_network_is_likely_not/

Seems like there was no 4 BTC loss, as there was no penalty transactions related to this node of lightning casino on blockchain, and seems like the user can even recover his funds (if the OP is correct). If the owner would manage to recover his coins, it would be a good sign that LN technology becomes more safe and robust for users.

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October 27, 2019, 10:31:09 AM
 #17

It's like all these cases I read about people accidentally sending 1 BTC or 10 to the wrong address, accidentally paying 1 BTC fees, or all these accidents.

Sending Bitcoin to the wrong address can happen to anyone, while paying 1BTC in fees is purely the result of people messing around with raw format transactions which they shouldn't. I did it once myself to find out that I sent a low dollar single input transaction with like 0.2BTC in fees due to wrong configuration.

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October 27, 2019, 10:00:53 PM
 #18

There aren't many cases where uses got their Bitcoin back after send it to wrong address or set extremely high fees, so i doubt it.

I don't think it's common nowadays because probably people are more careful and there are often warnings if the fee is set too high, but at least with high fees I remember people even getting a lot of their money back from transactions mined by P2Pool, as unlikely as that sounds.

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October 28, 2019, 01:25:18 AM
 #19

I don't think it's common nowadays because probably people are more careful and there are often warnings if the fee is set too high, but at least with high fees I remember people even getting a lot of their money back from transactions mined by P2Pool, as unlikely as that sounds.

no, I think that was slush's pool that returned the accidental 100 BTC transaction fee (the original thread was here on Bitcointalk, cannot remember when though). P2pool would've been a nightmare to get overpaid fees refunded, there were usually 100-200 payouts per block, where the 50 or 25 BTC reward (don't think p2pool survived past 12.5 BTC) got paid to that many addresses. They'd all have to have been paying attention (and be sympathetic to the mistake too) to refund it all! Slush's pool is still pretty big last I checked.

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October 28, 2019, 04:19:31 AM
 #20

There is no case to try out buggy new experiments when good old proven BitCoin works fine.

Bitcoin SV does the job like a champ

Don't fuck up the DNA that made it all happen

Scale it

Use it

Agreed on cartlon banks that the not smart should be careful, however, I disagree with discouraging experiments in the cryptospace. I reckon that we might not have a cryptospace if all people thought like you.

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