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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2
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2answers
69 views

How about force the use of unbalanced Merkle tree in Taproot?

I noticed this sentence in Taproot about the MAST build. The remaining scripts should be organized into the leaves of a binary tree. This can be a balanced tree if each of the conditions these ...
2
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2answers
72 views

Why don't add salt to the tapscript in Taproot?

The corresponding Merkle proof needs to be given when unlocking UTXO using MAST, where the hash of an unused script will be included. For the observation, it seems possible to guess the unused script ...
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2answers
175 views

How to accept donation correctly?

Imagine a web page that wants to accept Bitcoin donations. A naive approach is to provide a single address on the page and that's it. The problem here is that the address is known to everyone and if ...
1
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1answer
21 views

Where does a single script go in the Taproot tree of a script path spend?

If I only have a single script for the script path does the hash of the script get placed at the top of the Merkle tree (instead of the effective Merkle root) or does it get placed in level 1 of the ...
5
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2answers
500 views

What exactly is “privatekeys.pw”?

Today, I stumbled upon this bizarre website: https://privatekeys.pw/ Bitcoin Private Keys Directory The FAQ makes no sense at all and doesn't explain what it is about whatsoever. What could they be ...
4
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1answer
118 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, ...
0
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1answer
41 views

Can someone recognize any two addresses (generated by hardware wallet) come from the same hardware wallet/mnemonic seed?

Can someone recognize any two addresses (generated by hardware wallet) come from the same hardware wallet/mnemonic seed?If I generate multiple cryptocurrency accounts/addresses in ledger live,is it ...
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0answers
46 views

What is it that frees Bisq from all these KYC/AML laws and regulations?

I feel as if I should probably not ask about this, and instead just quietly go on using it in my little corner, not bringing any attention to its existence, but I still must ask: What is it that ...
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1answer
93 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 ...
2
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1answer
62 views

Can lightning transaction participants link the transaction to on-chain funding transaction UTXOs?

I'm curious about whether participants in a lightning transaction gain information about the funding UTXOs of other participants. Let's say Alice pays Bob using Lightning, and Alice's payment is ...
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0answers
49 views

How many hops does Coinbase and other exchanges track your movement of BTC when it leaves their exchanges?

I've read reports of Coinbase users getting an email stating that they detected their Bitcoins being moved to an unapproved exchange or site after removing their bitcoins off of the exchange. What is ...
3
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1answer
142 views

bitcoin-core automatic coin selection

for business reason i need to use the bitcoin-core (v0.20.1) automatic coin selection feature and few days ago i saw a transaction come out that left me puzzled, it was like that: input 0.00017[...]...
2
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1answer
64 views

Coinjoin implementations

What are the different coinjoin implementations being used right now? What are the trade-offs involved in using one of them?
3
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2answers
138 views

Why do people apparently “look up Bitcoin addresses on websites”?

I often hear things such as: Remember, if you look up an address on Blockchain.info or something, they will have a record of your IP address being interested in that address and thus associate it ...
1
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1answer
47 views

Does the concept of a blockchain introduce a violation of privacy?

Per my understanding, in a blockchain system, all transactions are recorded on an immutable ledger. Given this, if you know your friend's public address, wouldn't it be possible to figure out the ...
0
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1answer
59 views

How can I get the transaction history of a bitcoin address?

Lets say that I have a bitcoin address that is not owned by me. Is it possible to get that address's full transaction history (send/receive addresses and amount), and if the owner bought bit coins ...
0
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1answer
46 views

Bitcoins Anonymity - Do Exchanges Break It?

If I used to pay for bitcoin for something illegal (as defined by my country), and the public key of the wallet I used to spend the bitcoin became known, could authorities subpoena bitcoin exchanges ...
6
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1answer
245 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 ...
1
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1answer
71 views

Privacy and Anonymity in Bitcoin

I hope this is not a duplicate. I have seen lot of people confused between terms "PRIVACY" and "ANONYMITY". Context is Bitcoin transactions and protocol. What does privacy and ...
1
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1answer
118 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? ...
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1answer
28 views

What would stop some major company from blacklisting specific Bitcoins based on the “inputs” used and their “origins”?

I remember news about some exchange actually banning users based on some kind of "reputation score" on the inputs/coin parts they controlled/used, or got Bitcoin sent to them from. So even ...
4
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1answer
93 views

Are “coin mixers” actually a real thing? Can they be trusted?

Ever since I started hearing about Bitcoin, people have been mentioning "coin mixers" to me, and told me to use them. However, even early on, when they were practically throwing away ...
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1answer
34 views

Are there any privacy benefits in using a separate wallet in Bitcoin Core to separate myself from my service?

I currently run Bitcoin Core with the following wallets loaded in: hot.dat. Contains the smallest possible sum of Bitcoin. Unencrypted and used by myself for various personal Bitcoin purchases, and I ...
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0answers
34 views

Are there any privacy benefits in using a separate wallet in Bitcoin Core to “separate” myself from my service?

I currently run Bitcoin Core with the following wallets loaded in: hot.dat. Contains the smallest possible sum of Bitcoin. Unencrypted and used by myself for various personal Bitcoin purchases, and I ...
2
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3answers
521 views

Why isn't Bitcoin private by default? [duplicate]

Bitcoin is not fungible...so why haven't the Bitcoin core devs upgraded the protocol to make it private by default?
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1answer
1k views

How to cash out a Bitcoin wallet into fiat anonymously? [closed]

If bitcoin is converted to fiat money on an exchange, the exchange has irrefutable knowledge of your identity because they require the account name and bank account name to match. The only way to ...
0
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1answer
39 views

Customer pays in EUR and I receive bitcoin anonymously [closed]

I run a small business, and up to now I have always demanded to be paid in cash for my services. I want to allow my customers to pay electronically through wire transfer, while remaining anonymous ...
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2answers
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 ...
1
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2answers
89 views

Can somebody explain this privacy concern with Bitcoin once and for all?

I have a wallet.dat in Bitcoin Core. I generate a new receive address. I give it to some random person who knows my identity. They send me 1 satoshi to that address. How exactly can they then "...
1
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3answers
172 views

Is it possible to “send” Bitcoin to yourself (new wallet) without announcing it to the network and without paying any fee?

I want to make clear that I've already performed said transactions, so I'm not asking this because I want to do it right now. I'm just curious. Basically, I've spent a number of very sweaty and ...
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2answers
336 views

Should I be using the “encrypt wallet” feature in Bitcoin Core?

All my wallet.dats have no password. However, the internal hard disk where the "live" one is located is encrypted, and so are the offline storage devices where I have my "cold" ...
1
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2answers
187 views

Am I really understanding how the “Trezor Model T”, and hardware wallets in general, work?

Getting increasingly paranoid about losing my coins, I've yet again (for probably the 20th time by now) went looking for hardware wallets. The only semi-reasonable one seems to be the two Trezors. All ...
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2answers
93 views

How would I prove that I own X amount of Bitcoin to somebody without violating my privacy or sending/risking any coins?

Now that people who own a full Bitcoin will be like people who currently own ten million USD or more in "liquid assets", I'm trying to come up with some way that I can safely and reasonably ...
0
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1answer
40 views

is wallet vulnerable when unlocked for transactions?

is wallet vulnerable when unlocked for transactions?.I recovered a wallet some time ago and all is good.passphrase key all looks good.But a question came to my mind about the moment we make a ...
1
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1answer
36 views

Is the Cloudflare proposed ODOH protocol a thing that could improve Bitcoin node privacy?

Recently Cloudflare proposed an improvement to the DNS over HTTPS protocol called ODOH (Oblivious DNS over HTTPS). It allows separating a DNS server into two parts: the resolver and the proxy that ...
3
votes
1answer
544 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 ...
0
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2answers
145 views

How is it possible, that nobody can track anyone on the bitcoin network?

Is it possible that a person on the bitcoin network cannot be tracked?
1
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1answer
35 views

Can somebody really tell how many BTC I have from a receive address? [duplicate]

I bought a small number of BTC in 2013. Although it's not true, let's say for simplicity that I never moved them from my wallet.dat where I first received them. Now, in 2020, I generate a new receive ...
0
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0answers
55 views

Can you think of a safe way to safely keep my “spendable” Bitcoin in my situation?

I have my "cold stash" wallet.dat on multiple fully offline, encrypted hard disks/sticks inside a fireproof safe. I never seriously considered printing them onto paper because that would be ...
1
vote
0answers
98 views

What settings required to privately run bitcoin core on tails?

I am running bitcoin-core on TailsOS which seems to work out of the box. I think TailsOS blocks all unsafe requests but I would like to know what settings I should enable to run it really privately. ...
0
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0answers
8 views

Regarding Stuck Bitcoin [duplicate]

I made a mistake in Set my Fee to low and it has been stuck for 9 days. What can I do someone please help? I just need some help regarding this matter. I'm a first time user and I just want to make ...
2
votes
1answer
93 views

Re-use change address as a receive address

Technically speaking, is it possible to reuse a change address from a previous transaction and make it a receive address? What are the pros and cons of doing so? This does look like a bad privacy ...
8
votes
1answer
160 views

Where can I find research on wallet fingerprinting?

@raw_avocado asks on Twitter: I remember reading at some point something about how you can identify transactions made by specific wallets because they have a specific fingerprint because of how they ...
2
votes
1answer
90 views

is my xPub published when I make a payment? (wallet privacy)

I'm generating new addresses for every payment I receive, but what happen when I transfer the bitcoins from my wallet to another address? is my xPub exposed when doing that (maybe to the bitcoin node?)...
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0answers
85 views

Dandelion++ for Bitcoin

Dandelion BIP: https://github.com/bitcoin/bips/blob/master/bip-0156.mediawiki The article that I read about Dandelion++: https://www.monerooutreach.org/stories/dandelion.html It mentioned that ...
4
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2answers
840 views

in bitcoin core, how to use Tor for broadcasting new transactions only?

I have set up a full node with bitcoin core running on the internet. I have also set up a wallet running on a private machine that communicates to the full node to broadcast new transactions. To ...
0
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1answer
105 views

List of different unknown mining pools

A miner can identify himself when he receive his coinbase transaction, we can view them on website offering block explorer like https://www.blockchain.com/charts/pools Some of these miners are listed ...
2
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1answer
186 views

Securely erase a previously used address from bitcoin-core

I'd like to completely delete an address from bitcoin-core, in such a way that someone who obtains all the data on my computer could not find out I ever used that address. Is it enough to delete ...
2
votes
1answer
143 views

What are “tagged” Bitcoins?

I was reading about the Sheep Marketplace: Victims of the theft have attempted to identify the thief by sending "tagged" bitcoins to his accounts, using the public nature of bitcoin ...
1
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2answers
84 views

Is bitcoin really anonymous?

Let’s suppose i buy some bitcoin on an exchange platform (kraken for example). This platform Ask me some informations (id card). Now, if i transfer all my bitcoins to a physical wallet, then to ...

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