_ Here's how it works: Anybody can ask a question Anybody can answer The best answers are voted up and rise to the top up vote down vote favorite 3 Since you send bitcoin payments through one of the Bitcoin clients, I assume it announces the payment to the network, so each computer it connects to in order to do so would know the IP address from which you announce the payment.So when you make a bitcoin payment, who gets your address IP, and also which of them will know you are the originator of the transaction message and thus the wallet owner, and not just re-broadcasting it?Does the sellers themselves see your IP address, and can they be reasonably sure that they are seeing the IP address of the wallet's owner (and not somebody else)?Edit: Some clarifications - I'm not talking about visiting the seller's own webpage, suppose I'm viewing it through Tor.And I'm not talking about using an online wallet, since you don't really connect to the Bitcoin network yourself then.

ip bitcoin up vote down vote The receiver won't learn your IP, but a somewhat determined adversary could.(Of course, if the seller is an adversary, then they could.)This isn't a part of the protocol (there's no sender_IP field in the transaction), it is accomplished via listening in many places on the mesh network and doing statistics to determine the originating node of a transaction.No one knows you're the originator, unless they're watching many nodes in the network.The transaction, when first sent, is indistinguishable from a forwarded transaction; so the first node to see it will think the true sender is just forwarding from another node.You don't want to run Bitcoin over Tor, because it would allow the exit node to arbitrarily confuse your client as to the real state of the external bitcoin network.It can do this because it is the middle man in the only link b/t the client and the outside world.Bitcoin over Tor attack.To understand how this can work even with bitcoin's POW system, consider that, since there is only one point of connection (the Tor exit node) b/t the bitcoin client and the rest of the network, it is trivial for the exit node segment the network, isolating the client from all legit nodes and all legit POW.

The attacker can then run its own bitcoin node on the segmented network, making the only hashing power on the network that of the user (you) and of the attacker.litecoin price estimateTo execute the well known 51% attack, all the attacker needs is more hashing power than you.ethereum linux miner(Given that most clients don't having hashing enabled at all, any amount of hashing the attacker wants to do would be sufficient, given enough time.)mua tien ao bitcoinTo be clear, you can use Tor to proxy your browser.bitcoin javascript minerBut don't use it to proxy your Bitcoin client.litecoin hashrate droppingIf it's really a problem, and you're willing to sacrifice absolute control of your coins, I would recommend using a web client that doesn't require much info to register and doing so through Tor.1000 bitcoin atm

That way the unmask attack only unmasks the web client's server, which has no way of tracing you since you access it through Tor.If you're not willing to sacrifice a little control, then I don't believe there is a totally anonymous way to transact in Bitcoin.up vote 5 down vote From my basic understanding, since bitcoin network is peer to peer, you do not directly connect to your destination, but broadcast the message to your peers.Because of this, those peers are the ones that see your true IP address (and most likely they are the only ones).Because of this, it might be possible to trace back the transaction to you, but no ordinary vendor would have the computing resources to do so.It would requure having access to peers, which would need to be quite targeted.Feasable, but most likely only governmental agencies would be able to pull it off.If you worry about the anonymity of your bitcoin transactions, I suggest using TOR, or other anonymizing network, and tunneling wallet traffic over it.

Note that all it would take is 1 screw up, so keep that wallet safe and never run it unless you are absolutely sure the connection is properly anonimized.bitcoin wallet supports socks proxies well.Side note, vendors are not often interested in the IP address you paid from, as it is most often irrelevant.I would presume you would look at a web page that is a bitcoin payment request, and they would track the IP addresses visiting that page.up vote 3 down vote When you send a payment through Bitcoin (or similar altcoin) your PC will connect to at least one node in the P2P network.It will then get replicated throughout the network, and eventually wind up in a block.As of this writing, your Bitcoin payment needs to be sent to any of these 6,000 nodes to be included in the network.That means one node will "see" your source IP, and none of the others.Edit: There is controversy about using ToR, some of that has been published in the past 2 months, and I haven't read them.But in theory, sending a transaction over ToR (and not verifying the Tx is in a block) should be sufficient for sending a Bitcoin payment.

Ismael Miguel suggests using a VPS or a proxy which will "know" your IP address.In my mind this seems very similar to using a SPV client, as you're trusting an external node, which then must relay out.I will research this and update and comment on the best solution when I can.up vote 2 down vote Others have already mentioned that it is possible but difficult to track the IP of the transaction broadcaster.However I should note that you don't need to rely solely on web wallets to hide your IP.Several bitcoin wallet clients support raw transactions and therefore allow you to sign a transaction without broadcasting it to the network.You can then use some other node to broadcast it for you, and that includes web-based tools such as this one, which you can easily use via Tor.Your Answer Sign up or log in Sign up using Google Sign up using Email and Password Post as a guest Name Email discard By posting your answer, you agree to the privacy policy and terms of service.