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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Is it safer to send bitcoin to multiple addresses when moving to another wallet?

If I decide to move all of my bitcoins from one wallet to another, are there any theoretical benefits to generate multiple addresses in a new wallet and split the bitcoins between them? It will still ...
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Research article about impact of BGP hijacking on bitcoin p2p network

Based on this answer from 2014, bitcoin nodes are vulnerable to BGP hijacking. There was an incident today in which twitter prefix was hijacked and details are shared in 2 blog posts: https://isc.sans....
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3 votes
2 answers
178 views

What are the advantages/disadvantages to using the same Wallet Address?

I'm very curious about the reasons people keep their wallet addresses private. I don't understand, some people just post them publicly and nothing bad ever seems to happen. I am involved with a ...
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1 vote
0 answers
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Does coinjoin provide better privacy than coinswap?

In July 2020 one Twitter user shared a zcash transaction id which had shielded addresses however another user was able to get the transparent address from it. This was possible because t-z conversion ...
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3 votes
2 answers
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What are the best practices for managing empty, unwanted wallets?

If I have a deterministic wallet which previously held bitcoin but is now empty and is no longer needed, what information should I keep? I think there are three options: keep nothing keep the master ...
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How to create a new account in Electrum multisig setup?

I have a cold storage multisig created with Electrum. When I initially set that up I unknowingly let the Electrum app connect to a number of public Electrum servers, losing privacy as it shared a lot ...
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1 vote
1 answer
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With MuSig2 can we now avoid any privacy leak of a Lightning channel's onchain UTXO?

Now we have access to Schnorr and MuSig(2) onchain can we avoid any privacy leak of a Lightning channel's associated onchain UTXO?
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0 votes
1 answer
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What are the privacy implications of using Electrum public nodes?

My (perhaps naive) understanding is that Electrum sends first n addresses to a single randomly-chosen public server to check balances. If all addresses have balances, Electrum then sends next n ...
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0 votes
1 answer
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Does pruning reveal anything private such as one’s UTXOs?

I am writing a hardened Bitcoin node guide and I don’t fully understand the implications of pruning. My understanding is that when one has a full copy of the blockchain, the node itself doesn’t reveal ...
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1 vote
1 answer
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What knows a LN intermediate node about a transaction?

Following with How much privacy does Lightning actually have? there is some extra questions I would like to ask. Suppose that Alice send a LN payment to Bob and the transaction founds a route with ...
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1 answer
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Is it safe to use the same BTC address for an ongoing exchange DCA?

I'd like to ask a question about re-using an address for a DCA. I've searched the forum and found some similar answers but nothing exactly which describes my situation. I have an auto DCA set up from ...
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1 answer
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do Bitcoin full node onions also relay non-bitcoin traffic?

During the past week or so I am setting up a Bitcoin core full node on Raspberry Pi and making it as secure as possible. In the public mind, the onion sites and Darknet are associated with many things ...
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2 votes
2 answers
89 views

If you wanted to privately receive bitcoin from someone, how would you do that?

I do not like to be tracked when receiving or sending bitcoins. How do you make a secure wallet? If you wanted to privately get bitcoin from someone, how do you get it? How do you get the address to ...
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1 vote
1 answer
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How to do experiments on bitcoin blockchain?

I come up with a protocol that can enhance the privacy of bitcoin. I want to do some simple experiments on the bitcoin blockchain. However, doing experiments on the real bitcoin blockchain seems ...
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1 vote
0 answers
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What do people mean when they say that Bitcoin are "unconfiscateable"? [duplicate]

So all my Bitcoin are on an encrypted wallet.dat inside a VeraCrypted USB memstick inside a fireproof safe. While this might stop random a burglar, how does it stop the government from confiscating ...
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0 votes
1 answer
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How to edit bitcoin.conf for bitcoin.cli scripting

I want to install Kristaps Kaupe’s scripts on my bitcoin.conf but I am afraid I don't have the technical expertise necessary to make it run. I am simply cutting and pasting it on my bitcoin.conf file, ...
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0 votes
2 answers
137 views

Are transactions from two separate bitcoin accounts on Ledger Nano S independent of each other?

John Doe creates two separate bitcoin accounts on a ledger nano s and funds the accounts from two separate sources. The first funding source is a known terrorist organization and the second funding ...
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3 votes
1 answer
42 views

Can everyone see "message signatures" I create & verify?

I need to sign and verify messages on a couple of addresses, and I need to write my full name and address as message. Is there any concern that anyone can read the message(name and address) other than ...
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1 vote
1 answer
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How do people know who sent them bitcoin, ex. in case of a ransomware targetting multiple locations?

I have a rough understanding about how bitcoin works and have read about how anonymous it is, or rather how not anonymous it can be in certain situations. But I still do not get how is it possible to ...
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3 votes
1 answer
167 views

How will censorship affect the lightning network?

If the Bitcoin lightning network were to become widely used, what will prevent regulators from cutting people off? The lightning network provides participants with the topography for the purpose of ...
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1 vote
2 answers
145 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 ...
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2 votes
2 answers
118 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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7 votes
2 answers
257 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 ...
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1 vote
1 answer
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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 ...
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5 votes
2 answers
1k 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 ...
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3 votes
1 answer
159 views

Does the future SIGHASH_ANYPREVOUT capability hurt the privacy of Taproot lightning channels?

One of the advantages I've heard about Taproot is that all transactions will appear identical to a blockchain observer. This would of course also be true for lightning channel open/close transactions ...
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4 votes
1 answer
143 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, ...
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1 answer
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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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0 votes
0 answers
92 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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1 vote
1 answer
144 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 ...
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2 votes
1 answer
73 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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3 votes
1 answer
236 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[...]...
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3 votes
1 answer
161 views

Coinjoin implementations

What are the different coinjoin implementations being used right now? What are the trade-offs involved in using one of them?
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3 votes
2 answers
183 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 ...
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1 vote
2 answers
71 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 ...
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0 votes
1 answer
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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 ...
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0 votes
1 answer
54 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 ...
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6 votes
1 answer
300 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 ...
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1 vote
1 answer
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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 ...
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1 vote
1 answer
152 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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1 vote
1 answer
36 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 ...
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4 votes
1 answer
122 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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1 vote
1 answer
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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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2 votes
3 answers
547 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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0 votes
1 answer
3k 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 ...
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0 votes
1 answer
41 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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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 ...
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1 vote
2 answers
113 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 "...
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1 vote
3 answers
329 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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1 vote
2 answers
696 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" ...
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