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Questions tagged [address-reuse]

Collects questions about using the same address on more than one occasion to receive payments, and the resulting issues such as multiple inputs in the blockchain referencing utxos associated with one address.

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3 votes
1 answer
65 views

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:...
0 votes
1 answer
88 views

Privacy concerns for a publicly displayed Bitcoin address

If I publicize a "request address" with the intention of allowing people to support my online efforts, am I risking my privacy? i.e. if many people send me Bitcoin via that address, ostensibly that ...
0 votes
1 answer
51 views

Electrum Addresses for Customer Rewards Program

We are a tour company, I want to create a simple BTC rewards program for our travellers. Buy a tour from us and receive $20 BTC. Customer unlikely to have a wallet to begin with thus we need to hold ...
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 ...
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 ...
0 votes
1 answer
48 views

Create account and transfer usdt into the wallet adress. Used block chain to search address. Why was the adress used before i created my account?

There is an app i was led to called kzzy. You can fund your account with btc, eth, and usdt. All crypto converts to usdt once transferred to account. I am given two wallet addresses to send crypto to. ...
6 votes
2 answers
8k views

Why do wallets use multiple private keys instead of one each?

I am learning about Bitcoin and when I was about to export my private key from a single electrum wallet, I found that there were in fact a lot more than one. Why is that so, don't you only need 1 ...
0 votes
1 answer
231 views

Address Reuse and ECDSA Concern

I have a question about address reuse. Admittedly, I'm a little confused on the matter, so please bear with me if the framing of my question doesn't make much sense. Recently I started using Sparrow ...
-1 votes
1 answer
42 views

List unused multi-sig wallet addresses

Is there a way to list all bitcoin wallet addresses (or at least the count) which are receivers in a multi-sig transaction such that those addresses have never been used as senders in any other ...
2 votes
1 answer
67 views

why not change bitcoin consensus code to reject transactions sent to previously used addresses?

Bitcoin has a growing issue of UTXO dust. Usually this dust occurs from companies trying to track bitcoin use, by sending dust or small transactions to previously used addresses. There is almost no ...
0 votes
1 answer
127 views

Does key derivation make (or help to make) Bitcoin "quantum safe"?

We have these two other questions that touch on the same subject of how safe is Bitcoin from quantum computing attacks, but I believe mine is specific enough to be a separate question: What effects ...
1 vote
2 answers
141 views

In practice, are redeemScripts commonly reused?

In regards to P2SH-P2WSH transactions, are Txout-script values identical between transactions? Is it reasonable to expect a business or vendor that accepts bitcoin to be using the same redeemScript ...
24 votes
3 answers
17k views

Is it safe to reuse a Bitcoin address?

Besides the obvious privacy implications, and (according to a bitcointalk.org forum post) the fact that once an address is used your coins that rest on it safety depend entirely on the ECDSA safety (...
1 vote
1 answer
240 views

Meaning of BTC "wallet address" and any difference with transaction address?

This is a newbie question but I couldn't find the answer after reading Reddit's r/Bitcoin Sticky FAQ and also searching r/Bitcoin on "wallet address". I opened a Coinbase account a while ...
0 votes
1 answer
77 views

What are the downsides of address reuse in coinjoin?

What are the downsides of using an address multiple times in a coinjoin tx on the input side? Is address reuse associated with blockspace savings/wastage in any way? Peter Todd agrees with a tweet by ...
15 votes
4 answers
5k views

Can a Bitcoin transaction have the same address for input and output?

Can a Bitcoin transaction have the same address for input and output, i.e. spend some of the coins that are linked to an address and send the rest back to that same address? Is there some reason why ...
3 votes
0 answers
1k views

How to directly query leveldb database to get get a record by transaction hash or by sender's address?

I learned that the blocks and transactions are stored locally in .bitcoin/blocks/index and .bitcoin/chainstate databases, respectively. I want to make a direct query to those databases to measure the ...
1 vote
3 answers
2k views

Static Wallet Address

How do I make my account static so the address stays the same. The bitcoin wallet address keeps changing and I need to figure out how to make it stay the same
1 vote
1 answer
177 views

Taproot: Multisig Keypath - different bech32 addresses for same keys

I have a keypath (which is a 2-of-2 multisig) and a tweak attached to it, this tweak is responsible for the scriptpath. The scriptpath only has a backup public key (used rarely). Alice + Bob's public ...
3 votes
2 answers
673 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 ...
0 votes
1 answer
120 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 ...
1 vote
1 answer
2k views

If the bitcoin address changes every time, why there is more than one transaction for an address in the ledger?

I was checking a random address in blockchain.com, there are alot of transactions that is done over this address. While in the website it is mentioned that the address is changing everytime! So it ...
2 votes
2 answers
268 views

Can a Bitcoin address send Bitcoin to itself?

I saw some transactions where an input address also appears as an output address. For example, this transaction has one input and three outputs. Input Address/Amount Output Address/Amount ...
1 vote
2 answers
686 views

Privacy: How should I handle UTXO's?

We know that, for security and anonymity, we shouldn't reuse addresses. Also, there is the idea of change avoidance to protect ourselves from any number of change detection heuristics. But I find ...
1 vote
1 answer
390 views

Ledger Nano S - Do you use the same key to send & receive Bitcoin?

I have a just bought a Ledger Nano S and have put my Bitcoin onto it using one of the keys it generated. It actually generated 19 of them so I used the first one. My question is, if I want to load ...
6 votes
3 answers
3k views

Can I receive Bitcoin on any of my wallet addresses?

Can I receive Bitcoin to any addresses from my wallet? I have more than one address on Coinbase, and it seems to change every day. Can I turn off the changing of addresses?
3 votes
1 answer
85 views

Why is it a privacy problem to always pay to the same address?

I know as a merchant it is not a good idea to receive all payments to the same address because then people could track our balance. But I don't understand why it could be a privacy problem if we ...
2 votes
1 answer
121 views

Should I send the remaining balance from a paper wallet to a new paper wallet?

If I withdraw all my money from a paper wallet, but don't end up spending the whole balance, should I create a new paper wallet and send that remaining balance to it as opposed to the old wallet?
3 votes
1 answer
714 views

Would reusing addresses result in a lower fee?

Let's say you withdraw 100 times from an exchange using a different address each time for a total sum of 1 BTC. Now you want to move this entire BTC to a new address. This would result in a ...
4 votes
1 answer
5k views

Static receive address instead of dynamic?

I have 2 BTC QT wallets (and 1 LTC QT wallet), and am looking for a generic receive address for my wallets. In Electrum, Mist/Ethereum and Rippex, I get a single unique address to receive. In the QT ...
1 vote
2 answers
108 views

Why do wallets have more than one key pair?

I was looking into wallets and the information that they contain. I found this post: What information does a wallet contain? I thought that wallets have only one key pair. Why is there more than one ...
3 votes
2 answers
237 views

How to accept Bitcoin payments using Bitpay and Electrum for a business

Our company uses a standard invoicing model where we bill our clients the service charge and require payment within X days. We'd like to be able to add a "Pay with Bitcoin" option on the ...
2 votes
1 answer
89 views

Why Would Someone Not Use a new Change Address

I have previously asked questions and read about the importance of always using a new address every-time you receive a transaction, even for change. Sometimes when I watch the block explorer I see ...
1 vote
2 answers
93 views

Address Reuse vs. Coin Selection

I have read at length that address reuse should be avoided, for instance the bitcoin wiki describes numerous reasons here. I have also read Murch's master thesis on coin selection. These two concepts ...
2 votes
1 answer
86 views

Do miners have an incentive to confirm various transactions from same address?

Mempool is really clogged those days. I tried to make a transaction from one of my address to a friend. As we didn't care about confirmation time, I put a 5 sats/bit fee. 2 weeks later, transaction ...
2 votes
1 answer
172 views

How do non-deterministic wallets violate the principle of address reuse?

In chapter 5 of Mastering Bitcoin, Andreas writes: "The disadvantage of random keys is that if you generate many of them you must keep copies of all of them, meaning that the wallet must be backed up ...
0 votes
1 answer
66 views

Which address should be used to send the money as target?

We operate a market, there are sellers and buyers. Seller has Hierarchical Deterministic Wallets. Seller give us the Xpub. Which address should be used as destination, when buyer wants to send money ...
4 votes
2 answers
1k views

How to edit the label of an existing address exactly like in bitcoin-qt but instead using RPC calls?

I am trying to edit the label of a bitcoin address in my wallet outside of bitcoin-qt. Currently I only know of 'setaccount' but it results in two addresses after editing one, it assigns a new address ...
2 votes
1 answer
116 views

It is said that never reuse an address, but the news is stating biggest bitcoin addresses are buying?

It is said that we should never reuse addresses, so I think one time into the address, and one time out, and that address should be abandoned. So the top holders of bitcoins should know that too, but ...
8 votes
2 answers
1k views

Why is the ledger public?

To me, banking is not a public thing. I don't want people to know what's in my bank account at what time, or who I sent money to. I know that I can make a new address for each transaction, as ...
2 votes
1 answer
153 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 ...
4 votes
1 answer
76 views

What information can an attacker gain from watching the users behavior in block chain?

Given the blockchain is a public ledger, if user chooses not not change their public key (address) every time they make a transaction, what information can an attacker gain from watching the users ...
8 votes
2 answers
2k views

Why is the change address for a transaction the same as the originator address?

I was under the impression that if address abc has 100 BTC assigned to it, and it pays address def 20 BTC, 80 BTC will be transferred from abc to a new address ghi. But in this transaction: https://...
1 vote
1 answer
128 views

Bitcoin's cryptographic protocol allows for leakage of information about one's Private Key, making recalculation of the private key possible?

Is it true that the cryptography which is used in bitcoin allows for leakage of information which could be used to recalculate the private key - IF you are continuously reusing the same public address ...
0 votes
1 answer
123 views

Address Reuse for Multisig Address

It is De facto standard that address should not be reused, and even Bitcoin officially emphasis address should not be reused. Does the same condition apply for Multi-signature address ?, If Yes apart ...
1 vote
1 answer
86 views

Why do some addresses seem to send bitcoin to themselves?

When looking at block 630873, I noticed that some addresses seem to send BTC to themselves: Am I misunderstanding the situation, or does 1A7tWftaGHohhGcJMVkkm4zAYnF53KjRnU send large sums of BTC to ...
1 vote
1 answer
12k views

I accidentally sent bitcoins twice to the same address

Accidentally, I have transfered BTC from my one wallet to another twice on the same address. First transaction was successful, but in the second case the BTC got deducted from one of my wallet but not ...
2 votes
2 answers
916 views

How can this input address have multiple values at the same time?

For the transaction: https://blockchain.info/tx/ee1658bb4d0de80a91d2e0005218d4cfab7c302a352458bd6afb6376b47fbf81 it looks like there are multiple inputs with different values for the same address. I ...
2 votes
1 answer
2k views

Address Reuse issue

I dont understand how security works with multiple address using. I am trying to guess how security works here but need some feedback, so here are a few questions, and my own guesses. If I have total ...
0 votes
1 answer
124 views

Any good reason to prevent duplicated address in send transaction for Pos coin? [closed]

The use of sendmany in a PoS coin is an obvious source for preparing stake inputs, however it historically has been prevented to send to duplicate addresses in one transaction with such an error as "...