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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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What are the Trade-offs for Input Script Deduplication?

One possible optimization to compress bitcoin transaction size is avoiding repetition of redundant data between inputs. As a consensus change, a new transaction type could allow signing a list of txid:...
Otto Allmendinger's user avatar
2 votes
2 answers
176 views

Is there a way to make a BTC wallet address public but hide how many BTC it contains?

So for example if you want to publicise a BTC wallet address so as to accept donations for a project, is there a way to hide the amount that has been received in donations so far?
tell's user avatar
  • 135
4 votes
1 answer
132 views

Is address reuse always bad?

Talking about the privacy-implications of Bitcoin address reuse. Let's say A has to pay the rent to B. Each month, A sends 1/12 BTC to the same public address of which B has the private key. a) What ...
Birdy's user avatar
  • 41
2 votes
1 answer
79 views

Change output matches payment output type, not previous output type

Using the Bitcoin Core wallet making a transaction which spends a native segwit output and pays to a p2sh-wrapped segwit output will create a p2sh-wrapped change output. It is different from my ...
david's user avatar
  • 21
3 votes
1 answer
129 views

Can coinjoin and payjoin transactions be spotted on the blockchain?

Can coinjoin and payjoin transactions be spotted on the blockchain? Have centralized exchanges declined to accept these types of transactions?
BitcoinFanatic's user avatar
1 vote
2 answers
301 views

Could the Bitcoin network freeze someone's assets?

Strictly as an example, let's say some businessman owns a lot of Bitcoin, and he makes a disparaging comment online about a certain country that happens to have the majority of Bitcoin miners. Could ...
MWB's user avatar
  • 95
1 vote
0 answers
30 views

Given a Bitcoin wallet address, can its other addresses be inferred from it? [duplicate]

A bitcoin wallet doesn't have one single address, but several. All these addresses can be obtained from the master public key, am I wrong? Does knowing one of this addresses (not the master public key,...
Dan's user avatar
  • 191
3 votes
1 answer
106 views

What are the privacy implications of multsig wallets if one half is compromised?

I am trying to work out the privacy implications of the following scenario. Alice and Bob have a multisig wallet together (say Electrum but it doesn't really matter). Alice's computer is somehow ...
user2334659's user avatar
0 votes
1 answer
95 views

How can I send bitcoin to an address without a third party app?

Let's say I've generated a pub-priv key pair using ssh-keygen and loaded cash into it using an ATM. I've avoided using third parties thus far, so how can I continue this with sending bitcoin to a ...
user144264's user avatar
2 votes
1 answer
107 views

How do I verify my privacy on Bitcoin Core

Based on my question, you can tell that I'm not experienced by any stretch of the imagination. However, I'm eager to learn. I spent quite some time setting up a full node on a headless 2011 Mac Mini ...
Justin's user avatar
  • 21
2 votes
1 answer
80 views

I've combined dust with other, valuable UTXO's. Can I de-link them?

Long ago, when Bitcoin was only a geeky novelty with very little fiat value, I mined some BTC in a mining pool. There were several transactions resulting in (fractions of) newly generated coins sent ...
bitsmack's user avatar
  • 141
2 votes
0 answers
55 views

Listening only for local inbound connections over "clearnet", and using Tor for external connections

I want to connect some wallets to my node in my LAN, over regular connection (not Tor), but I don't want my node to use this "clearnet" connection for anything else (for example to connect ...
bl0ck3d's user avatar
  • 81
3 votes
1 answer
277 views

Bitcoind is able to listen both to clearnet and Tor networks but broadcast transaction only over Tor?

I know bitcoin core node can listen to both Tor and clearnet connections, but in this situation is it possible to broadcast transaction only over the Tor network and not clearnet? I'm asking it for ...
bl0ck3d's user avatar
  • 81
0 votes
1 answer
35 views

Which are considered not-for-public fields of the ones returned by getaddressinfo?

Create a new address in a descriptor wallet, then getaddressinfo - a result like the following is output: { "result": { "address": "bc1qf...", "...
Meglio's user avatar
  • 299
0 votes
1 answer
174 views

Does it affect bitcoin's privacy if I create an explorer that works differently?

Does it affect bitcoin's privacy when I create an explorer that works differently and tracks inputs based on LIFO (Last In First Out)? Does it affect bitcoin protocol's fungibility? Context: FIFO is ...
user avatar
1 vote
2 answers
54 views

Why would I prefer a full client over a light client that depends on a centralized server?

There are Bitcoin wallets like "Sparrow" which use a central service for maintaining the Blockchain, so I don't have to download 400GB to start using Bitcoin. Now, why should I use Bitcoin ...
user avatar
2 votes
1 answer
97 views

What is the standard or best practice for bitcoin wallet address labeling, if any?

Transferring wallet address labels from different wallets is non-trivial today, as there is no standard for this metadata it seems. Could address labelling be included in wallet config files at ...
thibm's user avatar
  • 33
0 votes
1 answer
102 views

Why criminals still use bitcoin mixers when there is other blockchains?

I came across the following article Allen Goldmann, A person is trying to hide $5 million in stolen Bitcoins from a Darknet marketplace, Forbes, November 28, 2022 where some criminal tried to ...
AseN's user avatar
  • 101
1 vote
1 answer
317 views

Can I create an entirely new m-of-n multi-sig wallet with the same seed phrases as an existing one by increasing n and discarding the new seed phrase?

If I were to create a 2-of-4 multi-sig wallet using the 3 seed phrases of an existing 2-of-3 wallet, plus a new seed phrase that I instantly destroy, would I then effectively have a new completely ...
evo_race's user avatar
3 votes
0 answers
51 views

What are the privacy implications of sharing or publishing the .onion address of a bitcoin node?

Some tutorials redact the .onion address of their nodes for privacy reasons: https://coldcard.com/docs/img/econoalch/Sparrow47.png What are the attack vectors that they are defending themselves from? ...
nMQz4QF4MVoTsIkkO5vH's user avatar
1 vote
1 answer
136 views

Descriptors of potentially fraudulent bitcoin transactions

I'm looking into suspicious bitcoin transactional patterns and I was wondering whether there is someone with experience in that area. If we consider transactions as iid data, then what descriptors (...
Andreas's user avatar
  • 89
4 votes
3 answers
188 views

What is the risk involved in fedimint?

I want to know the risks involved in fedimint? Fedimint is something that was shared as improving privacy for bitcoiners.
user avatar
0 votes
1 answer
52 views

What actually did Alexander Vinnik / BTC-e do?

As far as I undesrstood, Vinnki / BTC-e just allowed anonymous operations, nothing more. They didn't steal money, Vinnik didn't launder it himself. Other criminals just used BTC-e for their activities,...
Dims's user avatar
  • 139
1 vote
1 answer
73 views

Is it possible to determine what node a transaction originated from?

Let's say node-A is propagating a transaction to it's peers on the network: node-B, node-C, etc. Is there any way for the other nodes to know that node-A is the originator of that transaction, as ...
ABTC's user avatar
  • 31
3 votes
2 answers
340 views

Is it possible to identify UTXOs signed by HD wallets?

I was wondering if the fact that a transaction was created by an HD wallet can be somehow read off from the UTXO, or any other data available in the blockchain. Theoretically, it is not required in ...
Shai Deshe's user avatar
0 votes
2 answers
125 views

Determining change address

hoping to gain a bit more clarity on how change addresses work here. In the attached example, can the change address be identified with 100% certainty? Is there a potential scenerio where it could be ...
doug's user avatar
  • 1
1 vote
1 answer
533 views

Using online exchange like ChangeNOW or FixedFloat to create anonymity?

Online exchanges like ChangeNOW, SimpleSwap and FixedFloat, unless they keep records for a long period, which theoretically might be later accessed by authorities, might offer considerable privacy. I ...
Frungi's user avatar
  • 11
3 votes
2 answers
94 views

Why anonymity is important in blockchain, what are the core reasons?

I have searched a lot about this topic, but couldn't get a perfect answer. Why is anonymity is important in blockchain if the transactions are legit, What are the core reasons for importance of ...
Arjun Reddy's user avatar
1 vote
2 answers
108 views

Broadcasting fake Lightning channels

As I understand it, right now every public Lightning Network channel must be tied to a UTXO. This is required in order to prevent nodes from spamming the gossip network with nonexistent channels, but ...
Vojtěch Strnad's user avatar
1 vote
1 answer
45 views

Is there any privacy issue in doing this hard-to-summarize thing with Bitcoin Core?

I have a "hot" wallet.dat with no password, with a small amount of satoshis. Recently, I transferred them all over to my Bisq wallet temporarily to make trades. So the hot wallet.dat has 0 ...
Binyamin's user avatar
1 vote
1 answer
66 views

What's the difference between anonymous and pseudonymous electronic money?

You often hear people say that Bitcoin is a pseudonymous system, and that it's not anonymous. What is the actual difference in the context of electronic money? Pseudonymity means that you can see the ...
Kalle Rosenbaum's user avatar
2 votes
1 answer
458 views

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 ...
iamkd's user avatar
  • 23
0 votes
0 answers
204 views

In what ways does BGP hijacking affect Bitcoin?

Based on this answer from 2014, bitcoin nodes are vulnerable to BGP hijacking although I am looking for more details about how BGP hijacking attack could affect Bitcoin p2p network. What could be ...
user avatar
3 votes
2 answers
678 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 ...
xn--gif's user avatar
  • 31
2 votes
1 answer
124 views

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 ...
Curl's user avatar
  • 21
3 votes
2 answers
213 views

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 ...
Steve's user avatar
  • 171
1 vote
1 answer
130 views

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?
Michael Folkson's user avatar
0 votes
1 answer
202 views

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 ...
sunknudsen's user avatar
1 vote
1 answer
200 views

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 ...
sunknudsen's user avatar
1 vote
1 answer
98 views

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 ...
eloyesp's user avatar
  • 202
0 votes
1 answer
121 views

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 ...
HGW339's user avatar
  • 3
0 votes
1 answer
128 views

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 ...
Maniaak's user avatar
0 votes
1 answer
77 views

Do hierarchical deterministic wallets require higher fees as a trade-off for privacy gains?

This is my first post here, so be kind :-|. My understanding of deterministic wallets is that they use an initial seed to create a master key from which you derive multiple receive addresses thus ...
TheSway1968's user avatar
2 votes
2 answers
109 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 ...
BitBit's user avatar
  • 21
1 vote
1 answer
44 views

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 ...
user77340's user avatar
  • 131
1 vote
0 answers
46 views

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 ...
Q. Bresnahan's user avatar
0 votes
1 answer
693 views

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, ...
digitrader21's user avatar
1 vote
2 answers
569 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 ...
anonymous's user avatar
3 votes
1 answer
53 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 ...
Driver33221's user avatar
1 vote
1 answer
69 views

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 ...
evilmandarine's user avatar

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