This is just a short-term solution, if the internet is unreliable for short periods or if someone wants to be off-chain for another reason.
Topic: SENDING BITCOIN WITHOUT THE INTERNET - page 2. (Read 757 times)
Another weird way to do this is to create loads of paper wallets and to fund them with small amounts. You then physically pay someone with these paper wallets, like you would have done when you used cash. The receiver can use these paper wallets in the same way or he can sweep those wallets, when he/she gets access to the internet again.
This is just a short-term solution, if the internet is unreliable for short periods or if someone wants to be off-chain for another reason.
This is just a short-term solution, if the internet is unreliable for short periods or if someone wants to be off-chain for another reason.
You have to know, that today the Samourai wallet has a new platform that can create BTC transactions without the internet, and always keep privacy. so, the transaction of BTC delivery can be created only by SMS. and it's very simple and easy.
Samourai wallet has a goTenna partner, goTenna is a company that produces communication devices without internet. maybe you can try this application.
Samourai wallet has a goTenna partner, goTenna is a company that produces communication devices without internet. maybe you can try this application.
It's worth trying, but I'm worried that if the number of users continues to increase, they won't be able to receive text messages, maybe they are working on them and this is more risky than we are connected to the internet.
Bitcoin is very dependent on the internet, without bitcoin internet it cannot be used because bitcoin works with inter-block verification and needs an internet network, this is what makes bitcoin development very slow in third countries.
When offline transactions are done and asynchronous on its platform, the errors and vulnerabilities will be insecurity. Therefore, I believe that this will be one of the weaknesses that Bitcoin cannot make offline transactions. Because blocks verify transactions, this is not true for offline transactions.
It is impossible not to use the internet in bitcoin transactions or anything. We can send bitcoin by using a bitcoin atm. But this cannot be used throughout the world.
You have to know, that today the Samourai wallet has a new platform that can create BTC transactions without the internet, and always keep privacy. so, the transaction of BTC delivery can be created only by SMS. and it's very simple and easy.
Samourai wallet has a goTenna partner, goTenna is a company that produces communication devices without internet. maybe you can try this application.
Samourai wallet has a goTenna partner, goTenna is a company that produces communication devices without internet. maybe you can try this application.
I think the OP is mainly interested in a way to manage exchanges and other services. So yes, mocacinno's setup - online watching-only client and offline "signing computer" with the private key - is the way to go.
The problem that emerges is, obviously, the connection between the online and the offline machine. If you want both to communicate in an automated way (and not by human intervention), you must basically ensure that the offline machine can send only signed transactions via this communication, and that the offline machine would only "react" to transaction data coming from the online machine (and not to malware).
So what you can do: Write a custom standard for the communication between both computers that only handles the sending of unsigned and signed transactions. The only computer that could be manipulated (online) to accept or send other kinds of data is the online computer, but if you configure the offline computer the right way, he won't react to anything which is not transaction data, so it's impossible to make him send his private key (without "mechanical" intervention, e.g. compromised humans or USB sticks).
The problem that emerges is, obviously, the connection between the online and the offline machine. If you want both to communicate in an automated way (and not by human intervention), you must basically ensure that the offline machine can send only signed transactions via this communication, and that the offline machine would only "react" to transaction data coming from the online machine (and not to malware).
So what you can do: Write a custom standard for the communication between both computers that only handles the sending of unsigned and signed transactions. The only computer that could be manipulated (online) to accept or send other kinds of data is the online computer, but if you configure the offline computer the right way, he won't react to anything which is not transaction data, so it's impossible to make him send his private key (without "mechanical" intervention, e.g. compromised humans or USB sticks).
?sending bitcoin without internet? i think you can do that, with a note that your transaction will not created at that time, it will created when you connected into the internet, so if you want to send immediately you need the internet conenction
As mocacinno pointed out, an internet connection is required to broadcast a signed transaction to the network, even if you can sign the transaction offline.
One option is to use a bearer instrument like Opendime. People can pass it around like cash without any movement on the blockchain. Of course, you need an internet connection to verify its balance.
It's a tough problem to solve. Eventually we'll be using P2P mesh networks and won't be fully dependent on the centralized internet infrastructure, but the technology isn't quite here yet.
One option is to use a bearer instrument like Opendime. People can pass it around like cash without any movement on the blockchain. Of course, you need an internet connection to verify its balance.
It's a tough problem to solve. Eventually we'll be using P2P mesh networks and won't be fully dependent on the centralized internet infrastructure, but the technology isn't quite here yet.
If a signed transaction is not broadcasted to the network, it won't end up in the mempool of a mining node, so it has 0 chance of getting into a block (getting confirmed)
Does this mean that it is possible to do offline transaction but still need internet for the transaction to be confirmed?
I think you can actually avoid using the internet if you can send the signed Bitcoin transaction over to a miner to confirm the transaction for you. It would be a big hassle though, inputting the TX from paper.
Hello guys, So I got involved in some argument yesterday, that it was possible to carry out a bitcoin transaction without the internet, some of my friends argued that it was impossible that the internet wasn't built that way, that there must be internet before this can ever happen.
Below is what I read from Bitcoin In Practice 1 been handled by Andreas Antonopoulos:
True cold storage” means that the private keys have never been on a networked computer or device, i.e. they have been
generated offline and without intermediaries. The signing of outgoing transactions (signed with those keys) also occurs
offline. This method is more common for long-term storage of large funds that you will not be sending out very frequently,
as it is generally impractical for everyday use. You can still safely use the addresses to send bitcoins to them, as well as to
check their balances.
From the above statement, it shows it's possible to send bitcoin from one's wallet to another wallet while the sender can perform this offline. This doesn't mean is not going to get verified online on the blockchain.
I want to hear your response about this submission.
Thanks
Below is what I read from Bitcoin In Practice 1 been handled by Andreas Antonopoulos:
True cold storage” means that the private keys have never been on a networked computer or device, i.e. they have been
generated offline and without intermediaries. The signing of outgoing transactions (signed with those keys) also occurs
offline. This method is more common for long-term storage of large funds that you will not be sending out very frequently,
as it is generally impractical for everyday use. You can still safely use the addresses to send bitcoins to them, as well as to
check their balances.
From the above statement, it shows it's possible to send bitcoin from one's wallet to another wallet while the sender can perform this offline. This doesn't mean is not going to get verified online on the blockchain.
I want to hear your response about this submission.
Thanks
Ok, so Mocacinno has already answered your doubt so I will not repeat that again! Rather I will give you a whole new perspective of offline bitcoin transaction or no-internet bitcoin transaction. It is certainly possible to send bitcoin transaction without the internet. Please read the below news,
https://www.coindesk.com/bitcoin-coders-send-international-lightning-payment-over-ham-radio
So after reading this article, you know that bitcoin transaction can be sent without internet that looks good for experiments but at the same time it is not practical!
I read this a few weeks ago and was very happy to hear about it as i am a HAM Opp as well.
W2DJO is QRT. If a signed transaction is not broadcasted to the network, it won't end up in the mempool of a mining node, so it has 0 chance of getting into a block (getting confirmed)
Does this mean that it is possible to do offline transaction but still need internet for the transaction to be confirmed?
I think the internet is barely important for sending of transaction to be transmitted and delivered to recipient but it would have been so nice if no internet was needed.
As far as I know, we can't able to send bitcoin at the present time now without using internet. That's not possible anyway, we can only make transaction if we have internet connection.
If a signed transaction is not broadcasted to the network, it won't end up in the mempool of a mining node, so it has 0 chance of getting into a block (getting confirmed)
Does this mean that it is possible to do offline transaction but still need internet for the transaction to be confirmed?
I think you can actually avoid using the internet if you can send the signed Bitcoin transaction over to a miner to confirm the transaction for you. It would be a big hassle though, inputting the TX from paper.
Isn't there a satellite that's been launched to do that very thing?
On this time I think this is impossible. All we know that even that we have an internet connection it is hard to connect and to transact especially in a day time. So what if we will transact offline I think this is impossible to happen. But I think when bitcoin can upgrade to that kind of system this will be a good for all of us.
Well it is impossible. We all know that internet connection is a basic necessity for making wireless transactions. How do you suppose it'll go through? Gps? Bluetooth? We don't have that yet and unless it's a face to face transaction where there's physical exchange, we need the internet.
On this time I think this is impossible. All we know that even that we have an internet connection it is hard to connect and to transact especially in a day time. So what if we will transact offline I think this is impossible to happen. But I think when bitcoin can upgrade to that kind of system this will be a good for all of us.
I also think like you, sometimes using an online internet network to send or a bitcoin transaction is interrupted or is slow to transact even fails.and I also have not found information about how to send bitcoin without internet or offline, but we do not know that over time the development of bitcoin and technology in the future bitcoin shipping without internet can occur.
It is certainly possible to send bitcoin transaction without the internet.
One of the parties must have an internet connection though. You can generate and sign a transaction without internet access, much as you would do on an airgapped machine, and you can send that signed transaction to another party any way you like - via telephone call, radio waves, TxTenna, snail mail, even carrier pigeon if you were so inclined. But until the receiving party broadcasts that transaction to the network via the internet, then that transaction doesn't exist on the blockchain, and so the bitcoin hasn't been sent anywhere. Someone must have internet access at some point to broadcast the transaction. And until the transaction is broadcast, the sender could easily double spend by establishing internet access and broadcasting a different transaction in the meantime. 
Quote
https://www.coindesk.com/bitcoin-coders-send-international-lightning-payment-over-ham-radio
So after reading this article, you know that bitcoin transaction can be sent without internet that looks good for experiments but at the same time it is not practical!
So after reading this article, you know that bitcoin transaction can be sent without internet that looks good for experiments but at the same time it is not practical!
Thanks, but this is a bit different technology as it uses the somewhat radio wave.
At the end, the two developers expressed their frustration in this caption: “It was a fun demo, but obviously unrealistic because we coordinated everything online before sending the radio signals,” Ou acknowledged
True! That's the reason why I said it is not practical! It looks good for theory and even for a well coordinated experiment, but can't be used in real life! In practice, Bitcoin needs internet to function!
On this time I think this is impossible. All we know that even that we have an internet connection it is hard to connect and to transact especially in a day time. So what if we will transact offline I think this is impossible to happen. But I think when bitcoin can upgrade to that kind of system this will be a good for all of us.
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