Bitcoin Stack Exchange
Bitcoin Stack Exchange

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.

Contrary to popular belief, Bitcoin transactions are not completely anonymous or private. All transaction information is publicly available and each spend can be traced. Bitcoin offers privacy in that a 3rd party observer does not necessarily know who the participants in a transaction are and who received how much in each transaction. However privacy can be leaked through other sources such as exchanges, forum posts, and address reuse.

This tag should be used for questions related to privacy and information that can be used to identify the source and destination of Bitcoin.

414 questions
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5 answers

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
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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. Example user case: I buy bitcoins from Mt.Gox I…
c0de
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9
votes
2 answers

Bitcoin privacy metrics?

I'm looking for a numerical privacy scoring system that estimate the degree of linkage between the members of a key pool (or even just individual key pairs). Ideally, the method should be easy to understand and apply. I'm aware of "taint analysis"…
Rich Apodaca
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8
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3 answers

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 capable of providing the anonymous transactions…
jordAn
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8
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3 answers

Does sending from a green address improve my anonymity?

If I am interested in improving my anonymity when dealing with a merchant, does sending from a Green Address help? My proposed steps for buying from a merchant as anonymously as possible would be: 1) Send coins to InstaWallet (connecting to…
AlrightOK
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6
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5 answers

Is there any way to store personal data in a blockchain?

Generally everyone can see all data stored in a blockchain. Is there any way to handle private personal data like personal medical records which only right person can see?
Satoshi Nakanishi
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5
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2 answers

Anonymizing bitcoins?

Is there any way to anonymize bitcoins? It doesn't need to be AML-proof, or even completely anonymize their source, I'd just like to obfuscate the source of the bitcoins more effectively than sending them through a chain of addresses that would be…
Dale Rijn
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4
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1 answer

How can I protect my privacy?

Let's say I want to send BTC to a friend. This friend can now explore the blockchain and find how much money I have or what other purchase I've done or will do. What can I do in order to prevent him from being able to do that or see all of that…
Arik Malachi
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3
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1 answer

What is considered to be sufficient anonymity set?

We know that 2 is insufficient and 10,000 is more than enough. We also know JoinMarket can achieve about 2-6, Monero 2-3, but there all transactions are mixed, so they add up, CoinJoin can do 400-ish, but 50-100-ish is more realistic. What…
nopara73
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3
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1 answer

Fingerprinting Bitcoin client, from public information

Given a handful of transactions from a single individual, are there any techniques to try to infer/deduce what client the individual was using? In other words, do any commonly used clients leave a "fingerprint" that can be used to recognize which…
D.W.
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3
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2 answers

Can an onlooker even learn anything interesting by de-anonymizing a transaction?

If people cannot see what exactly the items purchased are but they only see the transaction of funds in the blockchain, does anonymity therefore even matter? Unless you get associated with criminals later if their address is seized and your…
thatguylowjwj
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1 answer

Is there any tool to visualize the bitcoin transaction graphs?

I want to visualize the bitcoin transaction graph linked to addresses that could potentially link my addresses and to better chose which coins I would use for which payment to prevent loosing privacy. Is there any tool that could help me build that…
eloyesp
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2 answers

How can I hide my bitcoin transactions to protect anonymity from others?

Please take a look at this transaction link of bitcoin : https://www.blockchain.com/btc/tx/blablablabla My bitcoin address is : blablablabla You can see all of my transactions by this link : https://www.blockchain.com/btc/address/blablablabla My…
SilverLight
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2
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1 answer

Is Bitcoin anonymous?

Bitcoin transaction's anonymity depends on public-private keys. The digital tie between a public and a private key is stronger than the tie between a person and his DNA. If you committed a crime but the police had your DNA you would hardly consider…
parishy
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3 answers

Is Bitcoin trading anonymous and untraceable?

I know little about bitcoin except they are digital currency. I heard that bitcoin ownership or exchanges/trading is anonymous and untraceable by government. Is that true? If I buy a bitcoin and pay by credit card, the money goes through banking…
Hu Sha
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