They sent me btc to my wallet they were available and then they disappeared! - page 2.

NotATether

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Quote from: Woodie on September 19, 2023, 02:34:38 AM

Quote from: NotATether on September 19, 2023, 01:30:43 AM

If the transaction was visible for a full day and then it disappeared, that means the other party used a very low fee, because most normal fees would make the transaction confirmed within a few hours max.

One of the disadvantages of bitcoin >>>"RBF" which is a good and bad feature about having this feature as it makes double spending so easy.

With the current low transaction fees do we still have transactions taking all day to get confirmed thought such a tx should be confirmed within a few hours at the most.

RBF is a two-edged sword, just like most other things in cryptocurrency.

It's primary purpose is to help you confirm a stuck transaction that is caught in a deluge of other higher-paying transactions, but it can also be used for scamming purposes.

Overall I think that pretty much any software or item can be abused for the purpose of scamming others anyway. I mean, even telephone calls.

hosseinimr93

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Quote from: _act_ on September 19, 2023, 04:46:42 AM

You do not have to check the blockchain explorer for your transaction when you are not using a paper wallet or wallet that you do not want to connect to the internet, online wallets have a transaction history and you can be able to know if the transaction is confirmed or not on the wallet transaction history.

You can check your transaction on block explorers, so that you get information about that from different nodes.

It's possible that the node your wallet is connected to is not synced and you want to get information from other nodes.
It's possible that the node your wallets is connected to has dropped your transaction from its mempool for some reason and you want to know whether other nodes have done the same thing or they still have your transaction in their mempool.

If I have received a transaction and it doesn't show in my wallet, the first thing I will do is check the transaction in block explorers (This is assuming I don't care about my privacy).

Yamane_Keto

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Copy the Bitcoin address from which you received that balance in blockchair.com. The balance that appears here is your balance. If the currencies are present, then it is either a synchronization problem or you made a mistake. If they are not present, then either you have been defrauded (the old transaction has become invalid) or Someone gained access to your private key.

Z390

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How come you do such business with a stranger? You manage to confuse them to pay up first before you send them money and they fooled you because they know you don't know too much about Bitcoin transaction.

This is what happens to people that believe they have the money, but not want to venture into having knowledge first, now after you become a victim you find your way to this forum seeking for help.

Unfortunately, it's too late, the scammer use your lack of knowledge to rob you in a broad daylight, next time always put learning first in everything you want to do.

Only release funds after the Bitcoin transaction is confirmed with at least 2 confirmations, you should ignore buying Bitcoin for now and instead spend time to know about Bitcoin itself and it's wallet operational, sorry for your loss.

satscraper

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Quote from: hopenotlate on September 19, 2023, 04:34:52 AM

Always check things on blockchain using an explorer, never rely on third party wallets/apps/sites : judging by the poor info provided most likely we are talking about a double spending case.

OP said that the coins he received have disappeared from the wallet "after a day" . Doable spending in this case could be only possible if the coming transaction that brought those coins to his wallet was not confirmed during that day otherwise doable spending could not be possible. Thus OP should tell us whether that initial transaction with BTC he bought was confirmed and if yes, whether his wallet contains outgoing transaction that steals his btc.

hopenotlate

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Quote from: _act_ on September 19, 2023, 04:46:42 AM

Quote from: hopenotlate on September 19, 2023, 04:34:52 AM

Always check things on blockchain using an explorer, never rely on third party wallets/apps/sites : judging by the poor info provided most likely we are talking about a double spending case.

You do not have to check the blockchain explorer for your transaction when you are not using a paper wallet or wallet that you do not want to connect to the internet, online wallets have a transaction history and you can be able to know if the transaction is confirmed or not on the wallet transaction history. What you can say is that he should check and recheck that the transaction is confirmed already before accepting the transaction.

Sure you are right, but ss as we know basically nothing about what original poster used I was referring to the most general case ( for example he might have used an exchange address or a gambling site deposit address or whatever) so to be 100% on the safe side check the most public and least manipulable infos available out there to check if a transaction actually went trough.

tabas

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If it's not broadcasted on the network then it didn't happened. Unless you did this through offchain like the seller's account from an exchange and your account from the same exchange. That means that if it's just shown to you that the balance was there, that doesn't mean that it was transferred to you. Maybe that guy just shown you his walllet and that's what he has sold to you but if that's the case, that's not in your custody because he still knows the private keys of that wallet. But it's best if you can add more details on how did actually happened. Either hacked, setup by the seller or you're completely have no idea what the heck happened and you can't explain it.

_act_

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Quote from: hopenotlate on September 19, 2023, 04:34:52 AM

Always check things on blockchain using an explorer, never rely on third party wallets/apps/sites : judging by the poor info provided most likely we are talking about a double spending case.

You do not have to check the blockchain explorer for your transaction when you are not using a paper wallet or wallet that you do not want to connect to the internet, online wallets have a transaction history and you can be able to know if the transaction is confirmed or not on the wallet transaction history. What you can say is that he should check and recheck that the transaction is confirmed already before accepting the transaction.

hopenotlate

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Always check things on blockchain using an explorer, never rely on third party wallets/apps/sites : judging by the poor info provided most likely we are talking about a double spending case.

_act_

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Lightning network is good with small amount of BTC

Quote from: Sim_card on September 19, 2023, 03:32:18 AM

You have been scammed mate, never deal with strangers because even people that you know can scam you talk more of a stranger that you don't know where to get him. Next time buy bitcoin from an exchange and use p2p method. There is nothing one can do to help your situation, this is a hard lesson for you. Always make sure that the transaction is confirmed before send the funds.

You can do a business with a stranger in some cases. People on this forum can be strangers to themselves, but that does not mean they can not trade bitcoin. If you have a reputable escrow, you can proceed in a bitcoin and fiat exchange with the stranger. Another reason I can do a business with a stranger is if the stranger prefer to send first and agreed for the transaction to have at least one confirmation before I should send money.

traderethereum

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Quote from: AlejndroBtc18 on September 18, 2023, 09:45:31 PM

I bought an amount of BTC from a stranger and made my payment in cash! I checked to see if the BTC was available and if they were, after a day they just disappeared. Does somebody know anything about this? What happened? What is this situation called or something like that?

Without any informations further, we can not know what exactly is happening.
You need to tell us where you buy btc and how much satoshi you bought and if necessary, you can paste your wallets here so we can check it for you to see what is happening.
But if you do not want to explain more, we can conclude that they scammed you and there is nothing you can do because they already disappeared and you do not know where they are going and who they are.
We can advise you to be more careful next time and make sure you get a seller with a good rating if you buy bitcoin at a third-party service.

Sim_card

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Quote from: AlejndroBtc18 on September 18, 2023, 09:45:31 PM

I bought an amount of BTC from a stranger and made my payment in cash! I checked to see if the BTC was available and if they were, after a day they just disappeared. Does somebody know anything about this? What happened? What is this situation called or something like that?

You have been scammed mate, never deal with strangers because even people that you know can scam you talk more of a stranger that you don't know where to get him. Next time buy bitcoin from an exchange and use p2p method. There is nothing one can do to help your situation, this is a hard lesson for you. Always make sure that the transaction is confirmed before send the funds.

BALIK

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Quote from: AlejndroBtc18 on September 18, 2023, 09:45:31 PM

What happened? What is this situation called or something like that?

No one can tell you what is happening to you with your short sentences. At the very least, you need to provide us with some evidence such as the wallet you used and the wallet address you used to receive the bitcoins...Furthermore, why don't you use an exchange to buy bitcoin and instead buy it from a stranger? You are just a newbie and are becoming the target of many scammers, you should be more careful when talking and dealing with those strangers.
I don't know if it's a big amount of money or not but my condolences for your loss.

Woodie

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When you say they coins disappeared, do you mean you can't see your coin from your wallet dashboard or coins can not be seen on address even after using an explorer??

If coins disappeared from wallet dashboard try resyncing it as this is something normal if wallet isn't oftenly used...but if coins don't even show up on an explorer unfortunately your contact might have pulled a fast one on you.

Quote from: NotATether on September 19, 2023, 01:30:43 AM

If the transaction was visible for a full day and then it disappeared, that means the other party used a very low fee, because most normal fees would make the transaction confirmed within a few hours max.

One of the disadvantages of bitcoin >>>"RBF" which is a good and bad feature about having this feature as it makes double spending so easy.

With the current low transaction fees do we still have transactions taking all day to get confirmed thought such a tx should be confirmed within a few hours at the most.

Blitzboy

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It's hard to identify what went wrong without more facts. Your issue sounds familiar. It reminds me of "double spend."

An attempt to spend the same Bitcoin twice is called a "double spend." After checking your balance, did you observe how many confirmations? A deal isn't really "final" until it's been confirmed more than once. If zero, it might be reversed around.

If you ever trade peer-to-peer, especially with a stranger, wait multiple confirmations (my standard is 6) before considering a transaction complete. Be careful and check again and again

AHOYBRAUSE

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Quote from: Charles-Tim on September 19, 2023, 02:14:02 AM

According to OP question, the attacker likely double spent the coin using RBF is what that likely happened.

Quote from: NotATether on September 19, 2023, 01:30:43 AM

If the transaction was visible for a full day and then it disappeared, that means the other party used a very low fee, because most normal fees would make the transaction confirmed within a few hours max.

You are correct, but I just want to point out that it does not mean that the transaction can be seen by the victim the whole day, the bad actor can immediately use RBF to cancel or invalidate the transaction anytime that he knows the victim has paid already.

Seems like that scenario.

Maybe, since the mempool is super low and OP looks like he doesn't know anything about bitcoin and so on, the seller chose a super low fee, let it sit for some hours cause he knows it won't confirm anyway, then double spent it and the money was gone.

As a newbie it is really important to educate yourself better how bitcoin and crypto currency works. If you don't then you open yourself up to the possibility of getting scammer. There are a lot of black sheep out there.

Where ever you found the scammer, try to get him to sell you something again, make a trap with a new account or something like that. If he bites you can get him and possibly get your money back. And don't go alone, bring some backup with you.

reagansimms

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The case you are facing is very complicated, there is not much that forum members can do to help you without being equipped with valid information about the transaction process that occurred. Why buy it from strangers, isn't there a centralized exchange that you can use to buy Bitcoin.?
Next time, never trust anyone you just met through social media, they are scammers who always target their victims in any way. That's how they work, after getting what they want, they will just disappear without a trace.

Outhue

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It looks like you approved an unconfirmed BTC transaction and released your money to the stranger.

By the way, why are you doing business with a stranger? If you can confirm that this person is a Stranger, why do business with them? As a crypto newbie, you can't tell me that you don't know about crypto exchanges where you can safely buy your Bitcoin with Fiat.

I think there is more to this story than you are telling us, I think this stranger promised to sell the BTC for a cheaper rate to you, probably a 50% off, because what can make you buy Bitcoin from a stranger?

Can you provide screenshot of you and this stranger's conversation?

Your wallet address? Or transaction harsh? What is the name of the wallet you use? A Double spending attack happens because of an attractive offer, coming from a stranger, in your case this is the only thing that makes sense to me.

Sorry to say, no one on this forum can help you get your money back, it's gone, at least learn from your mistake and avoid strangers in the future.

Charles-Tim

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According to OP question, the attacker likely double spent the coin using RBF is what that likely happened.

Quote from: NotATether on September 19, 2023, 01:30:43 AM

If the transaction was visible for a full day and then it disappeared, that means the other party used a very low fee, because most normal fees would make the transaction confirmed within a few hours max.

You are correct, but I just want to point out that it does not mean that the transaction can be seen by the victim the whole day, the bad actor can immediately use RBF to cancel or invalidate the transaction anytime that he knows the victim has paid already.

NotATether

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Quote from: mk4 on September 18, 2023, 10:18:30 PM

3. Was the transaction confirmed with at least 2 confirmations?

You mean one confirmation. Block reorgs are extremely rare and if they happen the transaction probably just goes back to the mempool and gets confirmed immediately in the next block instead.

If the transaction was visible for a full day and then it disappeared, that means the other party used a very low fee, because most normal fees would make the transaction confirmed within a few hours max.

Never send cash payment before the transaction is confirmed during P2P exchange, it is a common scam.

Topic: They sent me btc to my wallet they were available and then they disappeared! - page 2. (Read 411 times)