I have never had such experience onchain neither have I had a Bitcoin failed or double charged transaction. Blockchain chain is quite different from the banking system whereby failed transactions or double charged transaction are recorded. I believe you were trying to make I payment via the bank and there was no likely a poor connection when it took place hence the double charged deduction was recorded. It happens so often on the Normal fiat transactions as such is a norm and not new in the system but nevertheless, blockchain is not so. Bitcoin is not so was a transaction is sent, I goes through there by creating transaction harsh onchain which serves as a ledger for such transaction and it is recorded for life. It contains the source, sender and receiver address and also note that once a transaction is sent via a private wallet, it goes through but sending from an exchange, it requires you to verify the wallet address and with your approval before it could be sent to the destination where you want it to go to. In the overall,  I have not Bitcoin double charged as I do not buy or pay through financial organization but rather exchanges where Iit could be very easier for me to transact without any form of  stress just like the financial institution.

You are confusing what you have read. With bitcoin, transactions have always been verified and shared between nodes. This process of transaction verification was present from the start; it was not developed or introduced later. Double spending was less difficult in the earlier days of bitcoin, but this was generally due to things like a less well connected network, increased latency, or the potential for an attacker to have a significant proportion of the hashrate and mine in secret. It was not due to there not being a process for verifying transactions which were broadcast.

These terms are not synonymous. A race attack is a specific type of double spend, but there are others. See here for more info: https://en.bitcoin.it/wiki/Irreversible_Transactions

As far as I know, there is no such thing as a Double charge in Bitcoin terminology or even in real Bitcoin transactions so we won't be reading or hearing any complaints about this double charge in the Bitcoin network. Instead, there is double spending which is pretty popular as one of the weaknesses of the Bitcoin network but can easily solve by waiting for two or three confirmations.

That's not a problem with bitcoin, but a problem with the service you are using not understanding how bitcoin works. I bet if the price went up in the meantime they wouldn't have refunded you the difference.

That's not really accurate. Nodes keep an updated mempool of unconfirmed transactions, which is indeed updated after every transaction they receive. Miners create a candidate block from this mempool, but only once a block is mined is the blockchain itself updated.

I had quite similar experiences with you. Using my DC to pay in a supermarket, at that time, the transaction failed, and then, they tried again using the DC to pay. And it's successful.
After several hours at home, I received a notification spending a similar amount out of my account. I came again to the supermarket and they told me to contact the bank because they didn't have the money after checking. How could?
Then, with some requirements, I needed to wait around 24 hours and I received again the money.

Another experience is that when I withdrew money at the ATM, the transaction was successful, but the money did not come out until the transaction was declared complete, I did not get the money from the ATM. I happened to make a cash withdrawal at a minimarket and it was caught on CCTV, then I was advised by the minimarket keeper to report it to the bank. And finally, I reported to the bank. I was able to get my money back, but after 3 days later. Even though at that time I really needed the money, how troublesome and annoyed if there was a problem like this but we couldn't get a solution quickly, moreover, we also wasted time taking care of it, and the mechanism for taking care of the bank was also quite troublesome.

Thank you, sir, for this information. I guess I didn't understand the article so well.


In order to use Bitcoin, you must understand it well. Like O_e_l_e_o said, the problem is with the service you're using. If you are buying something online from a platform that accepts Bitcoin as a means of payment, they also know that volatility is one characteristic of Bitcoin, so they are not meant to ask you to pay extra due to service delay after paying them the agreed amount for goods.


I mean not to sound rude, but I suggest you go over my thread again. I did not say I have had issues of double-spending with Bitcoin, but rather I said I have a double-charged issue with my bank. I was just using Bitcoin as an example of true decentralization where there is no case of double-charging like banks.


That's exactly what I am saying. Bank transactions have some flaws that Bitcoin transactions supersede.

And why should the commission be charged twice?? If we take into account the huge fees for bitcoin transactions, we can say that the commission is charged twice as much as necessary! A joke of course! But the transaction fee on the blockchain network is very expensive, and it is not particularly profitable to transfer in bitcoins at all! And therefore, in this context, we can say that the commissions are charged as twice as much! a considerable commission is one of the main problems of bitcoin - without any humor!!

I hate the bank for their actions and the issue of double charging. Recently, I had to go to the bank just to upgrade my account and had to stand in line for several hours before I was attended to. That is why I love bitcoin; there are no bank upgrades, no double charging, and unnecessary bank charges; bitcoin is just a digital currency. However, some people are still afraid of investing and selling off their assets due to the market. Am always angered when I experience a botched transaction and am debited.