Bitcoin Forum

Is ther anyway to send a fake bitcoin or altcoin transaction?

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Yes.  I can help you with that.

Don't bother to do that. It's gonna be rejected by miners,
Also buyer will wait for at least 1 conf before releasing product... (which will not have even 1 conf).

Send me a PM.


it's just for research.

It might get your node banned, be careful its not only rejected to miners, but also by all nodes.

Can be done but to be honest research is why want to do and for this reason alone is kinda stupid to or wanting to do something in the future and be scamish people use to do and still do double spending on some sites that are not protected with this and lands all sorts problems for people doing it well more so the site been in negative figures. If want to know how to do it and repeat methods Google is your friend many wont explain in full detail of how to do due to the nature of it and what steps needed to repeat the process.

While you say it is for research, it still looks like you are researching some kind of scam.  I suggest that you might want to post in a different sub forum with specific details of your project so that it won't look like a scam.  Because right now it does.

i've searched on google but nothing.


it's a secret research, i cannot post it right now but if i find the right helper i will announce my research. and maybe it will be Open-source.

Newbie with 12 posts... sounds legit... s/

EDIT- I got your PM and I see what you are actually trying to suggest. It belongs in the Development & Technical section.

I realize you cant post new threads yet due to your n00by status, but go over there and read, there are other people working on very similar ideas. what you suggest is not a new idea, many others are working on the same thing. There has even been talk of creating BTC address "Blacklists" in the past... you could do a search on that, but it wasn't a very popular idea...

there is a "testnet" which uses "testbits" which function the same as btc but have no value, are only used for test purposes such as you are thinking of.

also.. you might want to think of a less provocative thread title  ;)

good luck.

try it! please.  we need that kind of stuff because otherwise bitcoin would have died several times. people will try to cheat, that is normal. bitcoin will adapt  ;)

If you like you can attempt to send a fake payment to my bitcoin address. It is in my profile :P

Wow, sounds like scammer behavior trying to get something for free. The only way you could do this would be to double spend but that is difficult to do and you should try it either.


Hehe, nice try.

if i can i will do it for you but miners or nodes will not confirm the transaction however if i can make the 20 transaction rules possible.this mean the transaction will be confirmed. i will send 10 btc. in a fake transaction.
you can easly hack the bitcoin system using 2 methodes:
1- hacking the math (the sha-256 or however), if you can crack a sha-... hash. i don't know. maybe.
2- if you have more 50% or nodes in the network or 50% of the Phashes/s you can send fake transaction and confirm it with your  nodes (fake nodes).
my idea is to verify the transaction without waiting to miners to verify it. so even if fake nodes has confirm it.

You should probably explain what you mean when you say "fake transaction". You probably need to take some time and learn how bitcoin actually works as well. You seem to have made some very incorrect assumptions.

If you are talking about sending bitcoins that don't exist, then it isn't possible.

It doesn't matter if you "hack the math", or if you "have more than 50% of the nodes", or if you have more than 50% of the hashing power, or if you "verify the transaction". It isn't possible to get nodes to accept a transaction that sends bitcoins that don't exist.

what i mean with fake transaction, is to send a transaction that doesn't respect one of the 20 rules of a transaction : https://en.bitcoin.it/wiki/Protocol_rules#.22tx.22_messages
no matter if i send a unexist bitcoins (by the way i can send coins that do not exist but it will be rejected.) or the size of the transaction is over the maximum ....

You can send one, but most nodes that receive it will reject it rather than relaying it, so it won't get very far.

It would be fake and the bitcoin ledger wouldn't allow it.  It's impossible to cheat transactions with bitcoin.

like i already said i don't want to send fake transaction and wait it.
it's for research. i didn't start my project yet cause i didn't find a way to send fake transaction.
but the final code will be  on the Bitcointalk and Open-Source On github.

And, depending on exactly what you mean by "fake transaction", you won't "find a way to send fake transaction".


Good luck with that.  I suggest you start by reading the following document and making sure that you understand it very well:

https://bitcoin.org/bitcoin.pdf

A fake transaction... If it can confirmed one day then the price of bitcoin that time should be $0. Bitcoin is valuable because it cannot be faked like fiat currency (fake banknotes).
So that's why almost all clients don't allow us to send a double spend transaction.

Double-spend transactions can be confirmed.

Fake transactions such as sending a non-existing unspent transaction output(UTXO) and sending unspent transaction outputs(UTXOs) you don't own will be rejected. Sending a big sized transaction, for example, 500KB and getting confirmation is very unlikely unless the miner who finds the next block includes that transaction. The fees you will have to spend will be very high and you will need a lot of inputs to reach that size.

Double-spend for some minutes with 0-confirmation transactions is easy and anyone can do it. I guess you can figure out how by yourself how to do it if you are as smart as your are trying to make us believe.

But all the addresses involved will have a double spend warning in blockchain.info for some time

my isea is to create a software that verify automaticly transactions without waiting for miners or nodes to do (not confirm the transaction), so i need to send a wrong transaction (every valid transaction should respect 20 rules ...) so my software should say "no it's not valid " ....

That's not how bitcoin works.  The system doesn't trust what you say.  EVERY node on the network, and nearly every wallet verifies EVERY transaction before accepting or propagating it.  So even if your software says that the transaction is "verified", the system won't believe you. Every node that you send the transaction to will immediately see that it is fake and will reject the transaction.  If they receive too many fake transactions from you, they will drop their connection to you and refuse to let you reconnect.

So, you trying to scam someone....

it's the 3rd time i say this its for research :

you need to wait about 10min to 1hour for every transaction to be confirmed,so :
my application don't confirm the transaction. just check if it respect the rules of a trasaction. so you don't need to wait 10min to be confirmed.

If you just want to 'validate' the transaction and not 'confirm' it on block chain, do you reallyt need to broadcast it to Bitcoin block chain?
Can't you run a copy of block chain on your local system and try to create a test transaction? I am not an expert on this, I'm just making a wild guess.

He want to confirm the transactions just like miners do but in a different way, I assume. Even though he said he don't want to confirm transactions, it looks like he want confirm transactions.

i think i find  a way to do it in testnet network (just like bitcoin but for research ans testing)
not confirming the transaction cause i should be a miner to do, just checking if it's a valid transaction.you insert the transaction hash(tx hash) and the appli. should say yes it's valid or no it's not valid.

Uh, my friend! You could say this earlier. Why even come with a title and discussion about "fake transaction"? ??? See https://en.bitcoin.it/wiki/Protocol_rules#.22tx.22_messages

LOL is that just curiosity? You can't send a fake one just like that since every single node connected is responsible for verifying each transaction as far as I know.

I think it was a mistake. He asked a different question than what he wanted.

Maybe karma screws you harder than Eminem screwed Kim. Beware, son.
 

So you trying to Learn "How to send a fake bitcoin transaction?" wow~!

Please also advise others to stop providing help on issues like these, the last thing the community needs is helping scams.

I would assume that is the case, but its not really possible to fake one in the first place; the closest thing would be a double spend.

you can't do that, very different Bitcoin and altcoin, you must learn more about bitcoin before you continue ask, google can help you

And this is a good thing!

cant you doublespend? i heard about those when i joined bitcoin in early days though i dont know if its still possible, i know people used to do it

i don't want to send a fake (or false) transaction to send bitcoin that dosn't exist.
i did this in testnet3 (bitcoin network for research). andthe nodes has unconfirmed the transaction.
i don't take care for the nodes or anything. it's my fault to post this in "beginners & help" section. this should be in Technical Support.
my idea is an application writed in C++ language to detect the source of bitcoins (may help to detect scammers) and detect fake transactions.
i

Testnet is for research. Why are you testing on the actual network?

I mean, if you don't tell him others will.
If he really wants to scam, he would already know by now.

testnet is a official cryptocurrency it's not for research now, cause some poeple feel like it's a normal network.
testnet2 is not 100% the same as bitcoin.
testnet3 is not very active.
BITCOIN is the first cryptocurrency it's about 0% vulnerable (not really). Anonymous is working with BITCOIN
i want to send a false transaction. and i want it to be rejected. done