Questions tagged [privacy]

Questions regarding the information that is leaked through cryptocurrency transactions or related processes, when subject to analysis and attempts of identification of sources and other properties.

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62
votes
9answers
27k views

How anonymous are Bitcoin transactions?

I read some sources that say Bitcoin transactions are anonymous, some that say they are semi-anonymous, and some that say they are not anonymous at all. In what ways are the transactions anonymous ...
37
votes
5answers
6k views

How can one remain relatively anonymous while using Bitcoin?

Bitcoin transactions are pseudo-anonymous. What can an individual that uses Bitcoin do in order to remain as anonymous as possible?
9
votes
1answer
3k views

Should I use a different address for every transaction?

Should I use a different address for every transaction? If yes, why? For safety? What happens I use the same address to get bitcoins from 2 different people, what happens?
26
votes
4answers
8k views

What are tainted coins exactly?

I've come across the term of a tainted coin several times now. I understand that coins, or better, the origin of a coin can be traced throughout the blockchain. I've read that bitcoins can be ...
41
votes
4answers
47k views

How do I see the IP address of a bitcoin transaction?

How do I see the IP address that someone used to send or receive bitcoins with? Is it stored in the blockchain?
14
votes
7answers
4k views

Are bitcoins INHERENTLY fungible?

Does each bitcoin has a unique identifier, like currency notes have serial numbers? If so, could you trace a particular bitcoin's ownership chain (ie find the current owner of a particular bitcoin by ...
38
votes
3answers
14k views

What is a stealth address?

Stealth addresses are mentioned in the context of privacy of bitcoin transactions. What are they and how would they work? Can they provide 100% anonymity?
15
votes
9answers
32k views

How can I hide my bitcoin transactions to protect anonymity?

I read many related questions about the pseudo-anonymity and bitcoin transaction tracking. So if I understand correctly, bitcoins, or better, transactions can be tracked for their entire lifetime. ...
9
votes
3answers
608 views

How can I control which coins to spend in a transaction?

When creating a bitcoin transaction, you have to choose which coins to use in them. The standard client does this in a way to avoid unconfirmed inputs and minimize the number of inputs and amount of ...
5
votes
2answers
824 views

Deanonymizing dust attack

What is the counter measure against dust attack, in case somebody tries to deanonymize me? Is there a possibility how to prevent somebody to send you intentional small dust, so that he can track your ...
8
votes
3answers
235 views

What is the most advanced technology for anonymous transactions?

What is the most advanced technology for anonymous transactions feature? I’ve heard about zerocash and coinjoin but which one of them has a technological edge? Are any of these technologies really ...
8
votes
1answer
1k views

What is BlitCoin?

I saw BlitCoin mentioned on this forum thread, but didn't understand what it was. Can someone explain what does it do?
5
votes
1answer
745 views

Can I send bitcoin to other address in my wallet to provide anonymity?

I want to buy service Z. I have 2 addresses in my bitcoin wallet: aaa and bbb. I buy 1 bitcoin from coinbase and tell coinbase to send them to aaa. Now I send them from aaa to bbb. No one else ...
1
vote
1answer
2k views

How can I use Bitcoin privately with the Electrum wallet and Tor?

I do not want to run a full node like Bitcoin Core but still want privacy running an SPV node like Electrum wallet to use Bitcoin. How can I setup to run Electrum privately with Tor?
3
votes
3answers
477 views

Bitcoin Exchanges and Anonymity

I'm new to Bitcoin and I have a few questions about Bitcoin Exchange and how the transactions work. To be more specific, the question is related about the level of anonymity of these transactions. 1) ...
2
votes
2answers
156 views

What are main advantages of Bitcoin over Monero? [closed]

In the world of full spectrum surveillance, since some time it has become more than evident that Bitcoin isn’t that anonymous at all. All transactions can be traced on the blockchain. There is a ...
1
vote
1answer
4k views

Is it possible to identify a wallet from an address?

I want to know is there anyway to identify a particular wallet (its username or email address) on the basis of a Bitcoin receiving address which is generated from that wallet. I am posting that ...
17
votes
9answers
1k views

Is there any way the Bitcoin network could resist a viral tainted-coin tagging system implemented by regulators?

Already it's possible for MtGox etc. to detect spends of coins that have certain well-known thefts in their history. If regulators forced audits on exchanges and key popular merchants, as well as ...
10
votes
4answers
3k views

Explain how CoinJoin enhances anonymity, in plain English?

I just learned about CoinJoin, but I don't really understand all the jargon being thrown around. Can someone explain how this works where a 10-year-old can understand?
8
votes
3answers
5k views

Best way to mix bitcoins? mixer, coin join (shared send), dark wallet, stealth addresses?

When you want to anonymize a few hundred BTC, what would be the best (safest) way? I can think of these alternatives: Deposit to and withdraw from exchange (like Kraken, Bitstamp, etc)Pros: ...
13
votes
2answers
294 views

What are the privacy implications of filtered blockchain downloads?

There is now "Bloom filter" support in the network protocol for sending only relevant transactions to lightweight clients. What are the privacy implications of the bloom filter? Does it leak any ...
11
votes
2answers
790 views

Anonymity through paying by bitcoin

I am considering the VPN service Privateinternetaccess. One of it's payment methods is bitcoins. As described on this page paying with bitcoins strengthens anonymity. In contradiction, this page ...
8
votes
1answer
1k views

Procedure for calculating taint?

I'd like to understand taint analysis quantitatively. Blockchain.info offers a service that will calculate taint, but I've found no good explanation for how taint is calculated. The best (and only) ...
6
votes
4answers
12k views

How to buy bitcoins anonymously

I'm studying the Bitcoin system and I'm wondering if there's a way to anonymously buy Bitcoin. Is it possible to charge a wallet (e.g. with a credit card, PayPal account, by person, by snail mail, etc....
5
votes
2answers
250 views

Do the channel balances get publicly announced in real-time on Lightning Network?

In Lightning Network, is the balance publicly announced in real-time? On the one hand, it should be public as it is crucial to the routing mechanism. But, in case that the balance might reveal some ...
4
votes
1answer
1k views

Zcash t-addr + z-addr transactions

Is it possible to "break" the traceability of the blockchain by sending ZEC between z-addr and t-addr?
3
votes
1answer
248 views

Can you detect that the addresses generated by an HD wallet came from a single wallet?

Can someone who is looking at the blockchain detect that 2 or more addresses generated by a single HD wallet are actually generated by that single seed/HD wallet ? Can someone who does know that 2 or ...
3
votes
1answer
2k views

How can one remain relatively anonymous while using Ripple?

Inspired by this and that. What can an individual that uses Ripple do in order to remain as anonymous as possible? How do Ripple's "anonymity profile" compare to Bitcoin? One specific difference is ...
2
votes
1answer
194 views

colored coin possible with ring signatures and stealth addresses?

It is understood that colored coin is possible with stealth addresses, but what about ring signatures such as how they are used in the cryptonote protocol (Monero, Bytecoin)? I feel like coloring the ...
1
vote
1answer
131 views

bitcoind and bitcoin-cli and bitcoin-qt

following the hackernoon for full node btc, https://hackernoon.com/a-complete-beginners-guide-to-installing-a-bitcoin-full-node-on-linux-2018-edition-cb8e384479ea i have some small questions, is there'...
0
votes
1answer
157 views

What is the cheapest fee based bitcoin / altcoin mixing service to keep myself anonymous and from being tracked?

I purchased some bitcoins from Coinbase and I want to give them away to friends for their birthday this year, but what I'm afraid of is if they end up buying stuff on the dark web with it. Last thing ...
10
votes
2answers
648 views

Can I hide my IP address by blocking incoming connections in the client?

I know that it is possible to find out the IP address of a transaction by connecting the client to every node in the network. Dan Kaminsky wrote: When you are connected to every node, the first ...
9
votes
1answer
111 views

Bitcoin node Decentralization

Is the number of independently owned and operated full Bitcoin nodes more important than the total number of full Bitcoin nodes with regards to Decentralization? Assuming the answer to the above ...
6
votes
3answers
323 views

How can I tell whether transactions were (not) made via BitPay / Coinbase?

Background Recently, Rep. Steve Stockman posed for a photo op with his Bitcoin address on a big QR code, which got shared. He has a Bitcoin donation page which asks for identifying info and goes ...
6
votes
1answer
1k views

How to broadcast a transaction anonymously

Is it possible to broadcast a transaction to the network without revealing my personal IP address? My first guess is to connect bitcoind over Tor with proxy=127.0.0.1:9050. Is it the good way to do it ...
5
votes
1answer
856 views

Can a Bitcoin server have a .onion ToR address?

Is it possible for a Bitcoin server to have a .onion ToR address? If so, are there any in existence today? (Note: this is an alternative to hiding addresses via the Azure Service Bus)
4
votes
2answers
15k views

Since the blockchain is public, how can we see it?

The blockchain is a shared public ledger for Bitcoin. What does that mean exactly? Is it possible to see, publicly, all transactions? For every bitcoin a person owns, is he able to see all the ...
3
votes
1answer
398 views

Does Segwit mean easier government monitoring?

I have noticed a steady stream of PR articles talking ad nauseum of the dangers of a contentious hard fork and how miners refusing to signal segwit are screwing us all. Many are quite well written and ...
3
votes
1answer
155 views

Anonymous transactions technology for a cryptocoin? [duplicate]

I’m thinking of investing in a cryptocoin with anonymous transactions feature. So far there are 3 well-known technologies for that: coinjoin (Bitcoin), masternodes (Darkcoin) and CryptoNote (Bytecoin)....
3
votes
1answer
1k views

Linking a transaction to a Bitcoin user

Has anyone tried and perhaps succeeded at linking a transaction to a possibly controversial site (such as Wikileaks) to a Bitcoin forum user by their forum signatures? I know a lot of people disclose ...
2
votes
2answers
3k views

Finding IP addresses of all bitcoin miners

I understand that the transactions don't have any IP info in them but I am curious to know if it is possible to enumerate over list of all the IP addresses involved in mining?
0
votes
2answers
117 views

Is it logical to use “Proof-of-Authority” for a “public” blockchain?

According parity.io website: Proof-of-Authority is a replacement for Proof-of-Work, which can be used for private chain setups. And also: The chain has to be signed off by the majority of ...
0
votes
2answers
374 views

Is there any chance to check the name by bitcoin hash?

Someone recently wants to sell me an iPhone, but the seller does not want to show me anything about it. It's a second-hand phone, and I'm worried about it a little bit. Is there any chance to see the ...
-1
votes
1answer
2k views

Running Multibit on Tails - connecting error [closed]

I'm trying to get Multibit wallet set up on my new Tails USB. It's up and running, but isn't able to connect to the internet. It just says "Connecting" in red. The message log says this - http://www....