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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1answer
240 views

As of 2017-09, Has there been talks or test implementations of making Litecoin anonymous / untracable like Monero or Zcash?

Being that Litecoin is more likely to implement experimental features before Bitcoin. As of today 2017-09, has there been discussions or test implementations of making Litecoin anonymous like Monero's ...
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1answer
193 views

Is there an alternative to Bloom filters?

There have been a few papers, online publications and discussion about the negative effects of bloom filters on privacy. What are the alternative to using bloom filters? (bonus question: Are there ...
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3answers
181 views

Can my internet provider see I'm using bitcoin core (Russia)

I live in Russia and bitcoin is prohibited here. Can my internet provider see I'm using bitcoin so I will have problems? UPD: Right now I'm still syncing bitcoin core. Is syncing as dangerous as ...
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What is the maximum anonimity set of a CoinJoin transaction?

I found the only limiting factor is the maximum standard transaction size which is 100k bytes. The most common transactions we are concerned with are 1 input, 2 outputs and the second most common are ...
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2answers
401 views

How do I pay Utility Bills anonymously with Bitcoin?

I can get my salary with Bitcoin: https://bitwage.com/ I can get loans with Bitcoin: https://bitbond.com/ Can I pay my utility bills with Bitcoin? If the naming pattern follows, there's a https://...
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1answer
85 views

Blochchains that support data privacy and/or strengthen parties pseudonymity

Question 1: Is there any blockchain that allows users to store their private data in the chain? For instance, the transactions and amount of Bitcoin one has is hidden from others. Question 2: Is ...
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1answer
160 views

If the sender address is known is it possible to find the recipient address?

Let's say I give someone an address to send me some bitcoins, when I eventually use these bitcoins to send to someone else can the person that has my address somehow know the address of the person I ...
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1answer
29 views

How to estimate the amount of transactions that belong to exchanges?

Can we estimate how many transactions (both incoming and out) belong to exchanges? This can either transactions per time unit (block, day, month ...) or transactions/total
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35 views

Why participants transact bitcoins use pseudonyms rather than persistent real-world identitie?

I recently read an article that tries to make reveal the identity of participants which transact bitcoins. my question is why participants use pseudonym instead of real-world identities and cause ...
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3answers
215 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 ...
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201 views

What is the main difference between “ enterprise” blockchain and regular blockchain?

We have some blockchain-based cryptocurrencies such as Bitcoin or Ethereum. On the other hand, we have some blockchain-based frameworks such as hyperledger and R3 that are designed for businesses. ...
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1answer
64 views

Anonymity of the spender with bitcoin

I know an important feature for digital cash (in contrast to credit cards transaction) is anonymity of the users: when I spend a digital coin in exchange of goods or services, I would like not to ...
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2answers
78 views

Find who all donated/transacted to/with a particular website/person

I wanted to know is there a way to find if a person donated to a particular site or made a transaction with a known address. I mean I know it could be looked up on blockchain easily, but what I am ...
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1answer
231 views

Bitpay Without Credit Card

I am having trouble finding this information so I would like to ask those who use BitPay: Can you create a BitPay account and spend coins without having a Credit/Debit Card associated with your ...
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1answer
297 views

What is learned from listening for inventory messages?

I am reading the paper Deanonymisation of clients in Bitcoin P2P network [PDF] and have some questions about the fourth step in 'chapter 5: Deanonymization' I don't understand the emphasized part: ...
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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 ...
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65 views

Zerocash: how to verify that a mint transaction is correct

I'm reading the whitepaper of zerocash and I don't understand how a mint transaction works. Here are my following questions: How do you prove that you have enough bitcoins to form a certain amount of ...
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483 views

Received Random Unconfirming BTC

I've been using BTC for years now. This is the first time this has happened. Woke up yesterday to an unconfirmed transaction of around $30. Completely confused, I wondered where this came from. ...
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1answer
363 views

Can hackers behind the ransomware WannaCry be traced through bitcoin transactions?

Can hackers behind the ransomware WannaCry be traced through bitcoin transactions? Is there is central server of Bitcoin where all transactions can be looked up from? And is it possible to identify ...
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1answer
76 views

Which is more anonymous?

About bitcoin, Which is more anonymous? 1.using mixing service(I heard there are many fraud) 2.buying with amazon gift card in Paxful
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1answer
402 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 ...
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0answers
113 views

Method to measure “distance” between 2 transaction id's

Is there a blockchain tool/code that takes two BTC transaction ID's and determines a distance between them. It's 2017 and Bitcoin Privacy (aka trying to walk around in the public without a sign over ...
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1answer
1k views

Do I need to secure my Master Public Key generated from an Electrum wallet?

I have an electrum wallet and have exported the Master Public Key. What level of security should I use for the MPK? Should I keep it offline? Can I keep it in plaintext in an online computer? Back ...
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2answers
412 views

Stealth addresses how does recipient use the bitcoins?

I've been reading on what stealth addresses does: Sender generates unique address using the recipient's stealth address for every transaction If multiple senders send bitcoin to recipient, then ...
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1answer
674 views

Do I need to mix my coins to stay anonymous?

I think my Bitcoins are anonymous if: I receive bitcoins from "Person A" on address 1. then I transfer them to address 2. and then to address 3. Because: Nobody knows that I own address 2. Is this ...
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1answer
106 views

Privacy approach for a light-weight wallet

I am looking for an approach to build a privacy centric lighter weight wallet. By privacy centric I only mean: network observers should be unable to guess the addresses belongs to the same wallet. So ...
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1answer
68 views

Anonymity of Bitcoin ownership a fakery?

If John needs to send 0.1 BTC to you as payment to your product, and he wants to retain his BTC ownership confidential, and the transaction goes something like this... 1fdfsefesf..... ---> send 0....
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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?
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1answer
328 views

Privacy issues with storing entire information in blockchain

I have been learning about how blockchain can be implemented in IoT, or health where entire information of patient is stored in blockchain, or in case of governments having info about citizens. ...
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1answer
684 views

Is it possible to identify what online wallet service a Bitcoin address belongs to?

Given a Bitcoin address or a record of a transaction between two Bitcoin addresses and a website like blockr.io to explore it, is it possible to identify what online wallet service a Bitcoin address ...
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1answer
228 views

Can a desktop wallet be tracked using IP address?

I'm wondering if I use a vanilla desktop wallet like MultiBit or Bitcoin Core to send and receive bitcoins, who can track my IP address and how?
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2answers
381 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 ...
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1answer
83 views

Would it be visible that someone moved bitcoins to or from tumblebit?

If I want to make a transaction with someone via Tumblebit, would it be visible on the blockchain? If a have a known public bitcoin address and I will move bitcoins from there to pay someone via ...
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1answer
88 views

Can a merchant find my other bitcoin addresses in the same wallet if it sends me money to one?

I would like to do business with a merchant (deposits and withdrawals) but do not want the merchant to know that I am one person making multiple transactions. If I have multiple addresses in a wallet ...
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58 views

What does the Payment Hub learn about its users in TumbleBit?

When a user participates in transactions on a TumbleBit payment hub, what does the payment hub learn about the user's transactions?
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3answers
292 views

Can I get Bitcoins anonymously by having a friend perchase them from an exchange and tranferring them to me?

Be kind to me as I'm a little bit fresh off the block with regards to bitcoin... Basically I'm looking for a practical way to get bitcoins anonymously. I know I can find people to meet up with to ...
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2answers
81 views

Can we design the protocol, so that an address can only be used once as an output in a transaction?

Most users reuse their addresses for deposits (ie. they receive money more than once on a given address). Can the protocol be designed in such a way that an address can be used only once as an output ...
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1answer
2k views

Sending Bitcoin from LocalBitcoin to another wallet to secure my funds, does it work?

I have an account with LocalBitcoin, that I use to ONLY fund my backpage account. However, this account is on the clearnet, is linked to my email address and bank account, and has been used without ...
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109 views

Zcash proposal to use checkpoints to verify monetary supply [closed]

Based on concerns about the trusted setup not being able to conclusively disprove the ability to create hidden inflation, Zooko recently described an idea to institute checkpoints to verify the total ...
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1answer
185 views

Is it possible to create private multi-signature transactions?

Since ZCash is based on the bitcoin core it is also enabled to create multi-signature transactions by default. ZCash now adds the possibility to create also private transactions. But how to create ...
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1answer
746 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 ...
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1answer
251 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 ...
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1answer
113 views

What value stores can be exchanged for bitcoin purely pseudonymously?

What can I trade with bitcoin without having to give out private details like name and address? (Imagine I don't even have a name or address.) I'm looking for stores of value like gold or stocks. ...
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2answers
16k 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 ...
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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 ...
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1k views

Why is the ledger public?

To me, banking is not a public thing. I don't want people to know what's in my bank account at what time, or who I sent money to. I know that I can make a new address for each transaction, as ...
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1answer
383 views

Tainting with HD wallets

I'm having trouble understanding HD wallet privacy... for one thing, what if I want to send more money than I have in any of my individual derived addresses? Then I would have to use more than one, ...
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2answers
4k views

Are Monero Transaction Anonymous?

Lets say i have a monero address and want to send my coins to another address. Will that transaction be private? Can somebody find out that i sent those coins? Are there any altcoins that i can use to ...
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3answers
195 views

Privacy friendly payment processor

What is the most reputable Bitcoin payment processor that has privacy friendly terms and conditions? BitPay and Coinbase are known to have used chain analysis to spy on customers. What are the ...
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102 views

Why do most alt coin developers choose to remain anonymous?

Is having a known public identity not helpful in building reputation for a project? Are the privacy and security concessions associated with revealing your identity not worth the perceived benefit?