Topic: SENDING BITCOIN WITHOUT THE INTERNET (Read 757 times)

That part of  Andrea's book sounds very interesting and confusing at thesame time. I remember wondering if something like that was possible
 I bet I have used similar  thing to store some coins but wasn't aware of how it works

I think if sending bitcoin without internet there will be no shipping transaction, because bitcoin runs on the internet, there must be an internet connection for each transaction.

I read about the same ethereum-based tokens cold storages and there was told about the possibility to transfer funds without being connected to the Internet but I just do not understand how. How can this process work out without the information being transmitted?

I agree with what you say, while currently bitcoin still needs an internet network to access it. but I hope that bitcoin companies can make access without internet networks in the future. Do you agree?

Lol. it can't happen friend. honestly I have never heard of sending bitcoin without an internet network. Even though there are bitcoin ATMs in your country, you still have to use the internet network and you cannot ofline.

Well, there's a distinction between being able to create unsigned transactions, creating (or signing) signed transactions, broadcasting transactions and making sure those transactions are confirmed.

Once can easily create a cold storage setup, walktroughs are available for core, electrum and samurai (apparently... I haven't checked out the links in this topic). With a cold storage setup, one creates an unsigned transaction on an ONLINE machine, uses a medium to transfer said transaction to the cold storage device and sign it.
At this point, one can THEORETICALLY move the signed transaction back on a storage device and send the device to a big miner in an offline fashion... Theoretically, a miner *could* run his mining farm offline, but he'd have to have an online machine that builds a mempool and receives the latest blocks, each time a new valid block was received, the mining pool operator would have to download the block and the top 1Mb (without witness data) of his mempool onto a stick and transfer it to his offline mining pool... If he would succesfully find a header whose sha256d hash is under the current target, the operator would have to transfer the result back to the online machine to broadcast the new, valid block... So this whole setup is completely theoretically and not usable in reality. And even with this setup, the transaction would eventually have to end up in a block that's broadcasted to the network, or it would remain unconfirmed (even unknown) forever.

If you would pay somebody by creating a transaction spending unspent outputs funding your address with an airgapped setup and give this transaction to the receiver but asking him to never broadcast the transaction, the receiver would never be sure he got payed correctly, since you can always create multiple transactions spending the same unspent outputs. It's only when a transaction is included in a valid block, and this block becomes part of the blockchain, the transaction becomes immutable and the receiver is sure you cannot "steal" his funds anymore... So just sending signed transactions between hardware devices without broadcasting might be theoretically possible, but completely worthless (in bitcoin terms)

Still trying to figure out how that will work since blockchain itself and mining is internet based. But i'm also intetrested why there are people who really believes it's possible. How? Probably a transfer from one hardware wallet to another through a link cable between two devices?

OP you went into wrong point and mocacinno explained everything well, I won't touch this task.
Btw currently not but possibly in future it will be available to send bitcoin without internet, there were a lot of ideas.
1. You have online wallet provider which you trust, send it message to send btc from your wallet to another wallet.
2. There was an idea of radio signals used specially for bitcoin which you would access with some small equipment attached to your smartphone, similar of GPS.

Bitcoin also will be having transaction without internet, yes, that is possible there's a wallet that can transact bitcoin without internet but I think that is temporary, it still needs internet to have an update on blockchain transaction. As I read the article "Samourai wallet" can do that thing. Please refer to this link to read more regarding offline wallet. https://usethebitcoin.com/sending-bitcoin-without-internet-or-satellite-is-now-a-reality/

I never do it sending bitcoin without use internet, maybe team and bitcoin development have new way how to sent bitcoin without use internet like have wallet could access every where.

I do not see it from that point of view, you may have confused some concepts, because until now to make transactions with Bitcoin you need to have Internet service, and this turns out to be a limitation for sites where it fails or simply does not exist. For now we will continue to depend on the Internet service to operate with cryptocurrency.

Internet is very important nowadays, in order to make transactions we barely needed or it is necessary to have an internet to communicate from one to another. People are now commonly used internet connection not only because it is reliable but also it is an efficient way.

What about the text message , the one that we use on our mobile phones  . there is also a huge number of users that are using text message but a network company can still handle them . same goes to samorai wallet and its provider     .   its also my first time to hear such strategy of using bitcoin offline  . they are genius and they are doing a great job .  i hope this idea can grow on other wallet providers   .

I think is impossible to happen to send bitcoin through offline or no internet connection because sending bitcoin is really need to connect to internet so the information will be updated . Maybe if you are sender of the bitcoin you really needed first the internet before you send but if you are the reciever even your offline is okay because once you reciever online using the internet the data will be update but all the time when you are using bitcoin internet is necessary.

Indeed mate, for my own knowledge about bitcoin it's really impossible doing transactions for sending without an internet. You're right using atm for online transaction would be the fastest option to have with. Personally I haven't yet experience doing such thing without the web network connection, that's why I supported that idea regarding btc cannot be sent without internet. However, I am not certain with other types of wallet like those hardware wallets if there's a probability of sending using an offline features

I was rather thinking of this to finally take its space, soon but other words I also know that private key was only used to protect the finds we have in our wallets according to the statement, we definitely will need the internet to sign in and out of it.

Very informative reply if not until your clarification I have always believed that bitcoin transactions can be done offline as most ops have always said bit just waiting to how that is being done without the use of the internet. But now I know how send bitcoin is done in an offline mod.

Isn't it the BlockStream you are referring to mate? If that is real then we can now access or transact even without an internet connection. Internet connection is one of the most problem most especially to areas with slow or no network connections. It will surely be a good news to each and everyone of us that truly supports Bitcoin. Sending Bitcoin even without internet connection could be a big impact to the community and adoption will surely be going up.

This is true, but what would be stopping me from printing the same paper wallet multiple times? I can continue to hand out the same paper wallet and the same bitcoin to as many people as I want until someone transfers the bitcoin out of that address. Or I could quite easily keep a copy of the private key for myself, pay someone using a paper wallet (or even multiple people using the same wallet), and then transfer the funds back to myself.

yes, anyway you need Intenet.. only in case you have a physical btc coin. but that's a rare thing nowadays.