Topic: Is it possible to fake the BTC blockchain? (Read 528 times)
In the world of internet hackers can easily fake everything they can easily create blogs of different sites although different organizations try to create blogs like their official sites there are many differences between these blogs. If you follow the sites in the right way you can consider them if you see the logo of the fake site BTC blockchain can be forged but not completely.
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Blog articles can be published anywhere on the internet and publicly accessible. Articles can be written in any language, but please check with us to make sure your language will qualify for a bounty.
Examples of recommended publications on reputable outlets, such as Bitcoinist, or in any other media relevant to Cryptocurrency. Your blog or Medium site works, too, however you must also follow that post up by distributing it on Reddit.
Writers should familiarize themselves with the official white papers to ensure an accurate depiction of MyIdentityCoin.
There is no way that this example will happened because there's no person in the world that will transact BTC without internet connection and will rely on the seller internet connection. This is an absurd example...
False...this topic must be closed since it's already received too many replies.
True, this topic has been already answered. The answer is that it would be technically possible, but it would not worth it as the cost would be too high.
Please before posting read the first 2 pages of discussion, there are all answers there.
No it is nt possible to fake any btc or blockchain transaction all the transactions are listed in blockchain website we can access all transactions
Based on the scenario given it might not possible, its either it will not be sent or retain in that account or simply be late in transaction since there is no way to have a fake blockchain unless the host will give his address to be sent to him. Beside crypto users are aware of scammers now that's why they do face to face transactions maybe as well they know they will have transaction why not load his self a data Internet on their place. 
That is quite technical but for general point of view, I think we cannot fake blockchain only if transaction are done according to its usual process.
What you site in your example is some kind of negligence on the person transacting and we know that if we are transacting a big amount of BTC , we will have to make sure that we will not fall for any kind of trick to steal our money.
What you site in your example is some kind of negligence on the person transacting and we know that if we are transacting a big amount of BTC , we will have to make sure that we will not fall for any kind of trick to steal our money.
Agreed. He is trying to point out if the scammer try to show the blockchain of a fork BTC. There is no way faking blockchain since it's transparent ledger and it's design to solve this kind of situation.
There is no way that this example will happened because there's no person in the world that will transact BTC without internet connection and will rely on the seller internet connection.
This is an absurd example and this topic must be closed since it's already received too many replies.
That is quite technical but for general point of view, I think we cannot fake blockchain only if transaction are done according to its usual process.
What you site in your example is some kind of negligence on the person transacting and we know that if we are transacting a big amount of BTC , we will have to make sure that we will not fall for any kind of trick to steal our money.
What you site in your example is some kind of negligence on the person transacting and we know that if we are transacting a big amount of BTC , we will have to make sure that we will not fall for any kind of trick to steal our money.
No it is nt possible to fake any btc or blockchain transaction all the transactions are listed in blockchain website we can access all transactions
He doesn't have mobile internet connection, so he asks his host to connect to his host's wi-fi.
His host, that we assume for the sake of our inquiry wants to scam his guest, connects him to a fake internet in which the real BTC blockchain was forked in order to fake a transaction that in really will never happen.
I'm not sure how this would work. Is he going to connect the guest to an internet network that he is able to manipulate data from it? I mean, this could be possible, similar to how countries block certain sites, I am sure smart hackers are going to be able to also manipulate things on someone's phone when they try and access the internet (eg, making things show up, after they use the internet).His host, that we assume for the sake of our inquiry wants to scam his guest, connects him to a fake internet in which the real BTC blockchain was forked in order to fake a transaction that in really will never happen.
So once the first guy will go back home he'll see that his payment has disappeared.
Is this situation technically possible?
You could be able to another address show up in place of an actual address possibly, but this hacker would need to be incredibly skilled. Is this situation technically possible?
This is an interesting one.
It looks like it can be done but I don't know exactly how.
I guess traders should be careful of "fake internet" then or even avoid exchanging Bitcoin via public Wi-Fi or other people's internet.
Imagine if this is done on a large scale by a powerful entity.
TBH from this discussion it seems like it can't be done or at least the cost of doing it would be much higher than just buying the BTCs
It's a bit of time I'm asking myself this question.
Let's imagine the following situation:
A guy visits another guy to receive a payment in BTC.
He doesn't have mobile internet connection, so he asks his host to connect to his host's wi-fi.
His host, that we assume for the sake of our inquiry wants to scam his guest, connects him to a fake internet in which the real BTC blockchain was forked in order to fake a transaction that in really will never happen.
So once the first guy will go back home he'll see that his payment has disappeared.
Is this situation technically possible?
Let's imagine the following situation:
A guy visits another guy to receive a payment in BTC.
He doesn't have mobile internet connection, so he asks his host to connect to his host's wi-fi.
His host, that we assume for the sake of our inquiry wants to scam his guest, connects him to a fake internet in which the real BTC blockchain was forked in order to fake a transaction that in really will never happen.
So once the first guy will go back home he'll see that his payment has disappeared.
Is this situation technically possible?
This is an interesting one.
It looks like it can be done but I don't know exactly how.
I guess traders should be careful of "fake internet" then or even avoid exchanging Bitcoin via public Wi-Fi or other people's internet.
Imagine if this is done on a large scale by a powerful entity.
Not all innovations are welcome development
Seems like you haven't read what we were speaking about here. It's a bit of time I'm asking myself this question.
Let's imagine the following situation:
A guy visits another guy to receive a payment in BTC.
He doesn't have mobile internet connection, so he asks his host to connect to his host's wi-fi.
His host, that we assume for the sake of our inquiry wants to scam his guest, connects him to a fake internet in which the real BTC blockchain was forked in order to fake a transaction that in really will never happen.
So once the first guy will go back home he'll see that his payment has disappeared.
Is this situation technically possible?
This is an eye opener mate, must persons are just looking for your idea, they have all it takes to make things work. Let's imagine the following situation:
A guy visits another guy to receive a payment in BTC.
He doesn't have mobile internet connection, so he asks his host to connect to his host's wi-fi.
His host, that we assume for the sake of our inquiry wants to scam his guest, connects him to a fake internet in which the real BTC blockchain was forked in order to fake a transaction that in really will never happen.
So once the first guy will go back home he'll see that his payment has disappeared.
Is this situation technically possible?
Just tell them what you think, and they will make it a reality!
I hope something like this will not happen in years to come.
It will really have a negative effects on cryptocurrencies In general.
Not all innovations are welcome development
As far as I know, the receiver cant get tricked assuming:
- The receiver has had his bitcoin address ready(probably pre-copied address to his notes app, or a screenshotted QR code)
Even if the bitcoin address is pre-copied the host can generate fake transaction on "fake blockchain" on which visitor is connected.
- The receiver is viewing his bitcoin address through a reputable and untampered app(Mycelium, Electrum, etc)
Yes, if he is using a reputable app he can't be fooled by a fake transaction as it will not appear on his app.
Technically everything is quite possible , one thing that you learn in cyber security is that you are not supposed to actually let anyone connect you with a wifi or Bluetooth and send something in your mobile , you should understand that everything that we see right now can fall anytime ... Everything does have one or more negative sides therefore we don't know how one can do it but we do know it's possible.
It's a bit of time I'm asking myself this question.
Let's imagine the following situation:
A guy visits another guy to receive a payment in BTC.
He doesn't have mobile internet connection, so he asks his host to connect to his host's wi-fi.
His host, that we assume for the sake of our inquiry wants to scam his guest, connects him to a fake internet in which the real BTC blockchain was forked in order to fake a transaction that in really will never happen.
So once the first guy will go back home he'll see that his payment has disappeared.
Is this situation technically possible?
Let's imagine the following situation:
A guy visits another guy to receive a payment in BTC.
He doesn't have mobile internet connection, so he asks his host to connect to his host's wi-fi.
His host, that we assume for the sake of our inquiry wants to scam his guest, connects him to a fake internet in which the real BTC blockchain was forked in order to fake a transaction that in really will never happen.
So once the first guy will go back home he'll see that his payment has disappeared.
Is this situation technically possible?
I don't think they can fool people like that because the bitcoin blockchain has so many blocks that each transaction requires block verification, it's impossible to manipulate or send fake bitcoin, unless they use third party applications or sites that cannot be reached by the blockchain technology created by the recipient to be sent via a fake application.
anyway. much cheaper attack to achieve if user is just using a lite wallet cellphone app. which would usually be the case for most meet up stuff
From what @pooya87 above has said about Electrum, for instance, seems it's not that easy to fake a blockchain with the lite wallet either:
SPV wallets
in this case it still is impossible to fool the receiver. although it depends on the wallet but a decent one (like Electrum) would download the block headers, verify their proof of work and could also use merkle root to make sure the "server" it is connected to is not lying about transactions and their state. and since everything is protected by an still strong hash algorithm and the proof of work, the design is fraud proof.
in this scenario the only thing that a malicious server can do is to show a confirmed transaction as unconfirmed. the opposite is impossible.
in this case it still is impossible to fool the receiver. although it depends on the wallet but a decent one (like Electrum) would download the block headers, verify their proof of work and could also use merkle root to make sure the "server" it is connected to is not lying about transactions and their state. and since everything is protected by an still strong hash algorithm and the proof of work, the design is fraud proof.
in this scenario the only thing that a malicious server can do is to show a confirmed transaction as unconfirmed. the opposite is impossible.
anyway. much cheaper attack to achieve if user is just using a lite wallet cellphone app. which would usually be the case for most meet up stuff
Is it possible for a 99% consensus 'SCAM' to possibly be the real "BTC" blockchain?
if victims node was downloaded to be a vrsion that the attacker hintd at, thus victims nod had ruls accepting attackers funky non btc rules.. then yesbut if victims node was recent proper btc node it would just regect the blocks from attacker
alt of people think a mining pool can just create a block that magics new coins or is 100mb and if 99% of people receive the block then it becomes accepts.. no
first the ndoes have to have a rule to not check balances to allow magic coins to be accepted. and then a rule to allow a 100mb block
and then majority of nodes if they pass the funky rules then need to follow a chain of blockhashes that the pool has produced by out pacing other pools..(tripl hard as it involves not only hash power but users havng the re-codd clinets to accept )
in most cases in just a current form '51% attack' a pool cant make mega blocks or make new coins appear from nothing.. al they can do is choose which valid rule following transactions to include or exclude
EG a transaction that follows ral btc rules. but where the attacker has only broadcast the tx to his attacker pool on the privat network thus only shows as confirmed in the forked private chain. but not even registered on the real btc chain.
thus when user gets home and syncs to the true btc chain. he ends up seeing his transaction is not confirmed as it was not broadcast and included on the real public btc chain
in short. people worry too much that pools can change the rules without needing consensus of chaning the code client run.. but all a pool can do is change th transaction lists in blocks
Is it possible for a 99% consensus 'SCAM' to possibly be the real "BTC" blockchain?
running scenarios through my head.
if your running a full node that has not been synced you are more at risk than one that synced.
but take that with a grain of salt
lets simplify it without the techni detail
imagine your node was synced recent enough to knows it needs blocks of ~50exa hashes performed to get a block
the attacker only has 50petahash(1000 asics($200k equipment))
what would take the public ntwork 2 weks to make 2016 blocks
and would take attacker 38 years to produce 2016 blocks to even gt to a point to start reducing the difficulty
imagine your node was last synced in 2014 enough to knows it needs blocks of ~a few petahashs performed to get a block
the attacker only has 50petahash(1000 asics($200k equipment))
the attacker could easily convince your node his privat fork has good reliable chainwork to make your node build upon blocks after the blockheight your node requests that you dont have.
so in short if an attacker wants to do something your full node needs to be very outdated in sync to b a cheap attack.
or the attacker needs to invest more to be able to do a for attack the more rcent the re-sync is required
so again not possible. but just low chance for more experienced users that sync regular
noobs that are fresh and totally unsynced(never used a full node before thus have no sync to fork/orphan) an attack can be cheap, very cheap as the only data the noob would b getting is the private forks version
if your running a full node that has not been synced you are more at risk than one that synced.
but take that with a grain of salt
lets simplify it without the techni detail
imagine your node was synced recent enough to knows it needs blocks of ~50exa hashes performed to get a block
the attacker only has 50petahash(1000 asics($200k equipment))
what would take the public ntwork 2 weks to make 2016 blocks
and would take attacker 38 years to produce 2016 blocks to even gt to a point to start reducing the difficulty
imagine your node was last synced in 2014 enough to knows it needs blocks of ~a few petahashs performed to get a block
the attacker only has 50petahash(1000 asics($200k equipment))
the attacker could easily convince your node his privat fork has good reliable chainwork to make your node build upon blocks after the blockheight your node requests that you dont have.
so in short if an attacker wants to do something your full node needs to be very outdated in sync to b a cheap attack.
or the attacker needs to invest more to be able to do a for attack the more rcent the re-sync is required
so again not possible. but just low chance for more experienced users that sync regular
noobs that are fresh and totally unsynced(never used a full node before thus have no sync to fork/orphan) an attack can be cheap, very cheap as the only data the noob would b getting is the private forks version
I'm thinking about the real world use scenario. That's why when someone has said here that the naive user could be scammed and there is nothing to do I don't feel quite satisfied with it.
But still I'm considering that if someone takes his laptop to go to someone to get paid he'd sync his blockchain before especially if he lives in a place where the internet is not that quick. So he'd sync before just to avoid waiting both him and the payer during the transaction (which by itself may take up to one hour).
So my receiver is not a complete noob as he accepts BTC as payment, but he lives in a very remote, poor place somewhere in the world, where the scammers are very active and technology doesn't work always as it should be.
In any case he has his a recent blockchain downloaded, so as per your explanation the attack can't be performed.
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