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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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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 ...
3 votes
1 answer
56 views

What are the Trade-offs for Cross-Input Script Aggregation?

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:...
5 votes
2 answers
193 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, ...
2 votes
2 answers
144 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?
1 vote
1 answer
523 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 ...
1 vote
1 answer
234 views

Can multiple different addresses in a wallet be linked easily?

Is it easy to link multiple transactions each with a different receive address to the same wallet? What if after going to this wallet the Bitcoin was converted to Monero?
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 ...
4 votes
1 answer
129 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 ...
2 votes
1 answer
78 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 ...
0 votes
1 answer
75 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 ...
9 votes
3 answers
4k views

Can a wallet allow you to receive Bitcoins from the same wallet you send them from?

Can a wallet allow you to receive Bitcoins from the same wallet you send them from, and if so, why would there be some reason why this shouldn't be done.
1 vote
2 answers
299 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 ...
3 votes
1 answer
118 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?
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,...
2 votes
1 answer
139 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 ...
9 votes
3 answers
757 views

How can I control which coins to spend in a transaction?

When creating a bitcoin transaction, you have to choose which coins to use in them. The standard client does this in a way to avoid unconfirmed inputs and minimize the number of inputs and amount of ...
3 votes
2 answers
375 views

What's partial spending? What does avoidpartialspend do?

Group outputs by address, selecting all or none, instead of selecting on a per-output basis. Privacy is improved as an address is only used once (unless someone sends to it after spending from it), ...
6 votes
1 answer
864 views

Was the first full node IP address Satoshi's and how did shim hide it?

It is not surprising that people assume Satoshi used ToR when scouring the internets however if my understanding is correct in order for someone to run a full node they need to provide their IP ...
2 votes
2 answers
323 views

How did Silk Road work when it came to delivering product anonymously?

A lot of times, people say Bitcoin is anonymous, but I know most transactions can be easily traced using IPs that used ewallets and by making connection with other bitcoin addresses. So with that in ...
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 ...
34 votes
4 answers
7k views

Are there any truly anonymous cryptocurrencies?

I've been looking into Bitcoin recently and stumbled upon numerous notes how Bitcoin is not anonymous at all, or how it's only partially anonymous and you can easily trace your funds. So, this ...
8 votes
1 answer
381 views

Is there a transaction propagation delay built in?

When a node receives a transaction it verifies it and then sends it to its neighbors. My question is: does the node broadcast the transaction right away or is there a delay built in (privacy concerns) ...
0 votes
0 answers
317 views

Can I anonymously self-publish books on Amazon and get paid in Bitcoin?

I want to publish the book under a pseudonym, or better yet, anonymously! I had been looking into Amazon Kindle Direct Publishing. I’d also like to use an anonymous e-mail address. Would it be ...
1 vote
1 answer
170 views

Beginning the process of buying bitcoins

I am interested in the process of buying bitcoins, but I have many questions. First and foremost, how do I begin this process? I am looking to make my bitcoin wallet as secure as possible, so how ...
2 votes
2 answers
138 views

How Crypto Payment Processors Handle Wallet Balance Privacy?

If an online store accepts crypto payments directly into its wallet there is a problem: "Anyone can make a small transfer to any BTC address derived from the MPK so they can watch the store's and its ...
2 votes
1 answer
105 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 ...
2 votes
1 answer
78 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 ...
4 votes
1 answer
92 views

What hierarchical deterministic derivation path is used for FIDO authentication on a Ledger Nano S?

What hierarchical deterministic derivation path is used for FIDO authentication on a Ledger Nano S? Does it ask for a different key each time or is it always the same key? If I connect to Google for ...
1 vote
2 answers
567 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 ...
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 ...
3 votes
1 answer
273 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 ...
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? ...
0 votes
1 answer
34 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...", "...
1 vote
1 answer
61 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 ...
0 votes
2 answers
835 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. ...
6 votes
2 answers
3k views

Deanonymizing dust attack

What is the counter measure against dust attack, in case somebody tries to deanonymize me? Is there a possibility how to prevent somebody to send you intentional small dust, so that he can track your ...
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 ...
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 ...
2 votes
1 answer
95 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 ...
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 ...
1 vote
1 answer
309 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 ...
3 votes
1 answer
1k views

Linking a transaction to a Bitcoin user

Has anyone tried and perhaps succeeded at linking a transaction to a possibly controversial site (such as Wikileaks) to a Bitcoin forum user by their forum signatures? I know a lot of people disclose ...
0 votes
1 answer
101 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 ...
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 (...
4 votes
3 answers
186 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.
1 vote
1 answer
96 views

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 ...
4 votes
1 answer
225 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 ...
0 votes
1 answer
51 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,...
1 vote
1 answer
67 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 ...
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 ...

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