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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Can "Confidential Addresses" preserve user privacy?
Can using "Confidential Addresses" be an alternative to zk-SNARKs to provide an acceptable privacy for a user?
And when we talk about "Confidential Transactions", does it mean we are using "...
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zk-SNARKs vs. Zk-STARKs vs. BulletProofs? (Updated)
zk-SNARKs, Zk-STARKs and BulletProofs are three major zero knowledge proofs to provide privacy for the blockchain technology.
If we can compare them,
(1) Bulletproofs and Zk-STARKs require no ...
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Zerocoin vs. Zerocash ? are they the same ? Or two different protocols?
what is the main difference between Zerocoin vs. Zerocash ? are they the same ? Or two different protocols ? If they are two different protocols, what are similarities ?
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Are there any risks of publicizing a Lightning network invoice?
What are the perils of publicizing a LN invoice either before or after its payment?
From what I understand, after its payment the second payment of the invoice cannot be done. Other than the fact that ...
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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 ...
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What’s the point of wannacry for exchanging Bitcoins to Monero? [closed]
At first glance, exchanging Bitcoin for Monero makes sense. But why use Monero with an exchange, which is likely to help the police? (And which did.)
Monero transactions are private only on the ...
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Is It Possible to Prove Ownership of Public Key Hash without Public Key?
I am building a system where I would like the user to specify a public key hash of a wallet that they have control over in the event of tips, refunds, and/or otherwise needing to send value back to ...
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Is Bitcoin anonymous? [duplicate]
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 ...
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Mobile Android Wallet for Dash that lets you do a private dash send transaction? [closed]
As of today 2018 June, is there an Android wallet that lets you do a dash private send? I know coinomi has Dash, but it doesn't have the privacy send features.
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Can malicious payer deanonymize payee in Zcash?
Looking at both the Zcash original paper and the updated Zcash protocol specification, it seems that after Alice paid Bob, she can reveal to the world that she did so.
Alice can do so by revealing ...
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Understanding "anonymous transaction"
I have read
In the original Satoshi whitepaper, it was recommended that Bitcoin
users use a new address for each transaction to avoid the transactions
being linked to a common owner.
But in ...
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Can the wallet's balance be deduces from the wallet's address and the blockchain's history? Is this concealable?
Since all bitcoin transactions are public, I guess that all transactions could be summed up to get any wallet's balance. Thus sharing a wallet's address means sharing the whole wallet's data. Even ...
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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 ...
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Personal information and bitcoin purchasing
I am in the process of buying bitcoins and am being required to put in a lot of personal details. Once i buy the bitcoins is there any way that the information i had to submit to buy them originally ...
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Why blocks are validated instead of transactions?
In most of the conventional blockchains, blocks are validated instead of transactions. Why cant' transactions validated directly?
The structure of basic blockchains are linked lists, by having DAGs, ...
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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?
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How can I confirm to whom the bitcoin address I sent a payment too?
Where can I find out what company is associated to the address I sent a payment too?
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State of privacy-preserving light clients
Currently, it is trivial to operate a SPV wallet in Bitcoin at the cost of a lot of privacy due to the necessity to connect to full nodes that offer SPV services.
Neutrino, currently being worked on ...
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Is there a way to link a bitcoin user's transaction to entering a lightning network channel?
Since lightning channels are offchain. When you send bitcoins to a lightning network node or wallet. Is there a way for companies like chainalysis to see if your on the lightning network? And then ...
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What is considered to be sufficient anonymity set? [closed]
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-...
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If lightning network transactions are "off chain", can we still see the transaction history then?
If the lightning network is a off chain system. Are the transactions private or public? And does that mean once you send bitcoin to a lightning network address, it can possible get hidden in a payment ...
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Mixing Unequal Inputs
Let's say have 3 inputs (alice, bob, satoshi): 0.3, 1.3, 1.6.
We can mix these inputs for example like this: 0.3, 0.3, 0.3, 0.3, 0.3, 0.3, 0.3, 0.3, 0.3, 0.3, 0.1, 0.1.
Or like this: 1.3, 1.3, 0.3, 0....
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Why does bitcoin not have something like nicknames?
It would be much easier to exchange bitcoins if everyone could have one or more unique nicknames on the blockchain. Of course what should not be possible is that other people can check the balance by ...
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What can be done in order to improve privacy in bitcoin transactions?
Privacy should be default and not an optional property - even when using stealth addresses or confidential transactions, your bitcoin balance and transactions in the wallet are transparent to anyone. ...
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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 ...
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What consensus algorithm is MimbleWimble/Grin using? Does it use Zero Knowledge Proofs as well?
Understand that MimbleWimble/Grin is privacy centric. Does it use Zero Knowledge Proofs to achieve the privacy goals?
In addition, what consensus algorithm is MimbleWimble/Grin using?
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Share private data and prevent data forwarding
Let's say A has some private medical records of patients and B is a pharmaceutical company who wants to view medical records from A to find out the effect of a particular drug on the patients (run a ...
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How Bitcoin wallets avoid address re-usability?
As we know, address reusability compromises both privacy and security.
My question is how Bitcoin wallets avoid address reusability?
Is wallet generates an address from index 1 and scan blockchain ...
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Create a non-changeable bitcoin address?
How to get a non-changeable bitcoin address. I tried to register on few bitcoin wallets websites but on each website btc address is changed after one payment is received and I didn't find the option ...
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Bitcoin Core Wallet - Really Anonymous?
how does one remain truly anonymous on bitcoin network? Say, for example, if one use the bitcoin core as its wallet, while sending one's first transaction, will his/her IP be somehow revealed at that ...
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How does an anonymous cryptocurrency encode coin values
I'm pretty sure I understand how cryptographic accumulators work to anonymize a coin's history, for example as described here: https://anoncoin.net/Cryptographic_accumulator/ but I have read that ...
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What impact on privacy does it have when a service like Coinbase starts using batching?
In the recent discussion of Coinbase's sending outage, the question was brought up how the privacy of Coinbase's customers would be affected if Coinbase started to use payment batching instead of ...
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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 ...
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Can one trace a criminal with his Pubkey?
Say FBI arrested a guy who bought some drugs using bitcoin. Then, is it possible for FBI to trace a drug dealer using the arrested guy’s PrivateKey and his transaction histories?
If my understanding ...
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What information is available from the blockchains of privacy currencies? [closed]
Some currencies such as Monero and Zcash focus on protecting user privacy as much as possible. What information is available from the blockchains of these currencies?
Number of wallets? Transaction ...
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Bitcoin Mixing? Is it even real?
I have been trying to find a "bitcoin mixing" service but it seems that ALL the "bitcoin mixing" sites I have looked at are scam. Does anybody know of any that are actually real and do what they say ...
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I have read many times that bitcoin is a public blockchain. Why is that?
Is there some special reason that Satoshi made bitcoin like this. Wouldn't in a private blockchain, transfer of currency would be more secure?
Also, is it possible to create a separate blockchain to ...
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Is my account balance publicly visible?
If I'm sending someone my wallet address, am I making my account balance visible to him?
As far as I understand, all transactions are public, which means that if I know an address, I can reconstruct ...
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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?
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Does 'Mixing' in bitcoins really add up protection to my bitcoins?
I was researching on simple ways to protect bitcoins without using unknown/untrusted software or solutions. It took my attention to 'Mixing' in the bitcoins with a friend's bitcoins and transfer back ...
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Can a Bitcoin wallet be identified as belonging to an exchange?
Ethereum wallets can be associated with Exchanges (e.g. Etherscan.io will tell you if an address is a Poloniex one).
Is this possible for Bitcoin addresses?
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If the public key characterize the wallet, is it possible to track all transactions of that wallet?
To explain better my question, consider this example:
Individual A is an investigator
Individual B is been investigated
Faking to be interested B's service, individual A gets B's public key to pay ...
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Eliminating all private keys records from pc
Suppose I buy a new wifi router and a new pc. I set up both the wifi network (of course, with a password) and the pc.
Now I access the internet for a few seconds in order to download bitaddress.org ...
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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 ...
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Safely generating Bitcoin paper wallets [closed]
I'm new to Bitcoin and I have recently purchased a few fractions of Bitcoin. My BTC are stored on what I understand is an online wallet (a website where I log in using two-factor authentication and ...
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Tracking the wallet owner of stolen bitcoins [duplicate]
Hello Recently my bitcoin wallet was hacked and the money was transferred out into another bitcoin wallet. Is it possible to track and find out the owner of this wallet
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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 ...
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How to distribute UTXOs in hard fork while preserving privacy?
Let us say I have a UTXO set S = {U1,U2, U3 ..., Uk} on a pre-fork bitcoin blockchain.
How do I spend the previous UTXO S so that the new UTXO sets on both the chains are not linkable/tracable? Are ...
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Is it possible to determine BIP39 keys are related
Is it possible to determine if public or private keys generated with a single same BIP39 phrase are related to one another?
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What is taint analysis?
I just came across the term "taint analysis" in a crypto-related conversation.
This came up while discussing "tracking bitcoin transactions" so it's somehow related to that. That's all I know.
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