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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66 votes
9 answers
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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 ...
Michael McGowan's user avatar
35 votes
5 answers
7k 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?
ripper234's user avatar
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33 votes
6 answers
14k 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 ...
btctb's user avatar
  • 331
9 votes
1 answer
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?
Klajdi's user avatar
  • 91
6 votes
2 answers
3k 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 ...
boldi's user avatar
  • 61
45 votes
4 answers
85k 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?
lemonginger's user avatar
  • 5,412
15 votes
7 answers
5k 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 ...
Edward's user avatar
  • 151
2 votes
2 answers
7k 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?
user375868's user avatar
1 vote
1 answer
6k 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 ...
anshul sharma's user avatar
40 votes
3 answers
16k 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?
Emre K.'s user avatar
  • 3,168
16 votes
9 answers
40k 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. ...
c0de's user avatar
  • 263
9 votes
3 answers
746 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 ...
Thilo's user avatar
  • 4,749
9 votes
2 answers
2k views

Is there something about Bitcoin that prevents us from implementing the same privacy protocols of Monero and Zcash?

Certain coins like Monero and Zcash implement privacy protocols that make it nearly impossible to trace origin and destination of transactions - making them completely anonymous. I'm curious as to why ...
S.O.S's user avatar
  • 419
2 votes
1 answer
303 views

Why is it impossible to get a straight answer as to whether Bitcoin is anonymous or not?

Yesterday, I asked a question which got linked to this answer: Is it true that all the bitcoins in existence are on the blockchain (the ledge), but it just depends on who the owner (address) is? ...
Digiammarino's user avatar
13 votes
4 answers
4k 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?
Patoshi パトシ's user avatar
8 votes
3 answers
265 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 ...
jordAn's user avatar
  • 81
8 votes
1 answer
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?
ripper234's user avatar
  • 26.5k
6 votes
3 answers
8k views

Can same private key generate multiple addresses?

Is this possible using some clever bitcoin script? The intention is to get more privacy. I can give different addresses to different people still no one can guess how much I make in total. I can do ...
balki's user avatar
  • 295
5 votes
1 answer
548 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 ...
user avatar
5 votes
1 answer
855 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 ...
tobuslieven's user avatar
3 votes
1 answer
1k views

How do I send bitcoin to multiple recipients at once?

How do I send bitcoin to multiple recipients at once? Like this. Also, I would like to know if the reason I see people do this is for privacy reasons? As when I sell items online they usually send the ...
Several's user avatar
  • 33
3 votes
3 answers
555 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) ...
Paper's user avatar
  • 195
2 votes
2 answers
235 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 ...
jjpcondor's user avatar
  • 143
2 votes
1 answer
9k 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?
Willtech's user avatar
  • 3,231
1 vote
3 answers
259 views

Bitcoin Privacy

In my privacy class I was asked this question related to privacy in Bitcoin: Which is the computational hard problem that is used to guarantee the privacy of users? Can anyone help me? The only two ...
Simus's user avatar
  • 165
1 vote
1 answer
158 views

Why do people claim that governments cannot confiscate Bitcoins?

Let's say that I practice impeccable data security processes using dedicated devices, encryption, and no clear-text backups. Even if they cannot find all of my backups, this doesn't protect me from ...
Marcoa R's user avatar
34 votes
4 answers
7k views

Are there any truly anonymous cryptocurrencies?

I've been looking into Bitcoin recently and stumbled upon numerous notes how Bitcoin is not anonymous at all, or how it's only partially anonymous and you can easily trace your funds. So, this ...
user avatar
17 votes
9 answers
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 ...
Julian Noble's user avatar
14 votes
2 answers
340 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 ...
Thilo's user avatar
  • 4,749
11 votes
2 answers
827 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 ...
Celeritas's user avatar
  • 879
10 votes
2 answers
699 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 ...
nmat's user avatar
  • 11.5k
10 votes
1 answer
139 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 ...
Smart Kid's user avatar
  • 293
9 votes
3 answers
9k views

Is it possible to view others' transactions in bitcoin client?

This seems like a really basic question, but I'm having trouble searching for answers on it. My understanding is that my bitcoin client (Bitcoin v0.7.1-beta) has basically theoretically downloaded the ...
BlueMonkMN's user avatar
9 votes
3 answers
8k 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: ...
RocketNuts's user avatar
  • 1,031
8 votes
1 answer
2k 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) ...
Rich Apodaca's user avatar
  • 2,321
7 votes
4 answers
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....
auino's user avatar
  • 181
6 votes
1 answer
2k 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 ...
dunand's user avatar
  • 71
6 votes
3 answers
371 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 ...
Sai's user avatar
  • 313
6 votes
1 answer
477 views

Why is it recommended to "not send round number amounts when making payments" for increased privacy?

I got this advice today to increase my Bitcoin privacy: Do not send round number amounts when making payments (eg send 0.00104103 BTC, instead of 0.001 BTC) Why do they say this? Why does the amount ...
Quenton's user avatar
  • 61
6 votes
3 answers
290 views

Why does Coinjoin need multiple participants to increase privacy?

Coinjoin is a method that make a transaction with other transaction of other parties to hide the link between txin and txout. In case of this, why we need others transaction? We have many bitcoin ...
Hyunsoo's user avatar
  • 363
5 votes
2 answers
404 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 ...
user1387682's user avatar
5 votes
1 answer
3k views

How do we know which miner or pool mined a block?

There are websites that talk about each mining pool's total % of hashrate. I think they do that by calculating what % of the last X blocks were mined by a particular miner/pool. But how can we know ...
Damian Siniakowicz's user avatar
5 votes
2 answers
353 views

How does not practicing address reuse hurt my privacy?

If I never conduct transactions from an IP address associated with my real life identity and never conduct a transaction with someone who knows me in real life how can using the same address all the ...
Pablo's user avatar
  • 392
5 votes
1 answer
1k 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)
makerofthings7's user avatar
4 votes
2 answers
411 views

Security implications of regular saving into cold storage

I am thinking about following this plan: Regularly buy bitcoins in an online exchange, 100€/month at market prices. Once the balance in the exchange exceeds a certain limit (500€), move those ...
Em Edih's user avatar
  • 41
4 votes
1 answer
163 views

When you make a Bitcoin transaction, can the receiving person (and the world?) really see how much coins you have in the entire wallet?

I really hope that I've got this horribly wrong, but I have to ask... I have this idea, which I base on comments and explanations I've heard over the years, that when you make a Bitcoin transaction, ...
C M's user avatar
  • 41
4 votes
2 answers
18k 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 ...
John Smith's user avatar
4 votes
1 answer
2k 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?
Kugusha's user avatar
  • 41
3 votes
1 answer
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 ...
ripper234's user avatar
  • 26.5k
3 votes
1 answer
172 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)....
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