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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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 ...
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1 answer
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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 ...
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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 ...
1 vote
1 answer
120 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 ...
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3 votes
2 answers
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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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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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2 votes
2 answers
116 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
1 answer
586 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 ...
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3 answers
1k 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
2 answers
96 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 ...
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3 votes
2 answers
182 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 ...
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2 votes
1 answer
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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 ...
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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 ...
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1 vote
1 answer
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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 ...
2 votes
1 answer
75 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 ...
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1 answer
61 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 ...
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2 votes
1 answer
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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 ...
2 votes
1 answer
134 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 ...
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1 vote
1 answer
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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 ...
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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 ...
4 votes
1 answer
72 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 ...
1 vote
1 answer
47 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 ...
2 votes
1 answer
918 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 ...
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1 answer
131 views

Why do self-loops exist in the bitcoin transaction graph?

I have obtained bitcoin data from block explorer and created the transaction graph. The graph consists of millions of nodes and edges. i wrote a query that creates a relationship from source address ...
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1 answer
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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 "...
1 vote
2 answers
127 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 ...
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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 ...
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3 votes
1 answer
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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 ...
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Can I continue to use an old Bitcoin address? [duplicate]

I have a wallet on Blockchain.info and they generated a Bitcoin address for me. Now, I have another Bitcoin address. Can I still use my old Bitcoin address?
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1 answer
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How many non-web wallets discard private-keys? or How common are non-deterministic wallets?

I'm concerned about non-web wallets that discard private keys after use. Web wallets - share addresses between users, so the user can consider all private keys to be immediately discarded. ...
0 votes
1 answer
113 views

Why is there sometimes no output that sends funds back to the sender's address?

'A' has one bitcoin. 'A' tries to send a 0.5 bit coin to 'B'. Two utxo are created. First, "utxo" sends "B" 0.5 bitcoin. Second, "utxo" where "A" remits remaining bitcoins to "A" except for 0.5 ...
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1 answer
107 views

How many wallets don't support address reuse? (for refunds)

I have implemented an automated bitcoin refund function that sends funds back to the address that was used to sign the incoming transaction. How many wallets fail to support address reuse/refunds? ...
5 votes
1 answer
398 views

Are all UTXOs locked by an address spent in a transaction?

Imagine I have 2 UTXOs locked by my address, each of which allows me to spend 5 bitcoins. If I subsequently want to send just 2 bitcoins to someone else, will both UTXOs be used as inputs in the ...
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2 answers
118 views

Single "Multiple Inputs Tx" vs Multiple "Single Input Tx"

Alice owns three addresses A1, A2, A3. She decides to collect the coins held by these addresses into a single coin so she generates a fresh new address A4 for that. She has the following two options: ...
2 votes
1 answer
144 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 ...
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1 answer
163 views

Send and Receive BTC with Same Address from 1 Person

Is it possible to : I sent BTC to A from Address1 and I asked him to send me BTC (different amount as I send him) to Address1 (same address with I sent him before)..?
4 votes
2 answers
897 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
2 answers
546 views

If I reuse the same address can a previously used transaction be reused?

I was wondering, if I used an address adr0 to spend some coins in a transaction tx0 that give the coins to a different address adr1, and eventually, after some time, I receive some (completely ...
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1 answer
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XAPO's flow from wallet to vault - a different wallet address used for the transfer

I have a XAPO account and I moved a bitcoin from Bittrex from XAPO. Now, XAPO has provided me with a wallet address a1. Now when I have moved my bitcoin from my bitcoin wallet to vault and checked ...
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1 answer
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I read that Bitcoin addresses are single-use tokens. Is it my responsibility to generate new ones in Electrum?

I am quite new to this, and started using Electrum today. I read on the Bitcoin Wiki that "unlike e-mail addresses, people have many different Bitcoin addresses and a unique address should be used for ...
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1 vote
1 answer
2k views

Is there a way to generate new addresses for someone else's wallet?

I thought I saw this feature existed somewhere but I can't find the reference. Use Case: Alice needs to keep sending multiple bitcoin transactions to Bob, and wants to use a different payment address ...
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1 vote
1 answer
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Is it secure to put a wallet address on one's business cards as a QR code?

As a company, we're making business cards, and would like to put our bitcoin addresses on our business cards as QR codes. Yet, I know that it is a best practice for wallets to cycle addresses - I mean,...
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1 vote
1 answer
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How Bitcoin wallets avoid address re-usability?

As we know, address reusability compromises both privacy and security. My question is how Bitcoin wallets avoid address reusability? Is wallet generates an address from index 1 and scan blockchain ...
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2 votes
1 answer
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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?
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1 answer
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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 ...
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2 answers
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Sell bitcoin to account

So let's say I have multiple bitcoin addresses (some of them already received bitcoins), created a new bitcoin address, received bitcoins on it and would like to use the very same address to send them ...
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1 answer
110 views

Bitcoin's change back

I'm starting a new project that uses bitcoin. I'm afraid some feature can't be done, or aren't safe. I'd like to validate some ideas: I'll create a wallet/address and publish it on the project's ...
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4 votes
2 answers
398 views

Security implications of regular saving into cold storage

I am thinking about following this plan: Regularly buy bitcoins in an online exchange, 100€/month at market prices. Once the balance in the exchange exceeds a certain limit (500€), move those ...
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1 answer
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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 ...
1 vote
1 answer
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How can we know our "from" address in advance?

This website ask me to enter the address FROM where I would be sending BTCs. But every time a send some BTC it seems to be sent out from a different address... Should I use the one I always see when I ...