Are all UTXOs locked by an address spent in a transaction?UTXO all sent to change address?Signing...
How can I be pwned if I'm not registered on the compromised site?
Caulking a corner instead of taping with joint compound?
What is a term for a function that when called repeatedly, has the same effect as calling once?
How does insurance birth control work?
School performs periodic password audits. Is my password compromised?
Practical reasons to have both a large police force and bounty hunting network?
Why would the IRS ask for birth certificates or even audit a small tax return?
Is every open circuit a capacitor?
Make me a metasequence
How can I highlight parts in a screenshot
Is there a limit on the maximum number of future jobs queued in an org?
GPL code private and stolen
Did Amazon pay $0 in taxes last year?
PTIJ: Why can't I sing about soda on certain days?
Are there other characters in the Star Wars universe who had damaged bodies and needed to wear an outfit like Darth Vader?
Why won't the strings command stop?
Why do phishing e-mails use faked e-mail addresses instead of the real one?
PTIJ: Aharon, King of Egypt
Lock enemy's y-axis when using Vector3.MoveTowards to follow the player
How to kill a localhost:8080
Draw bounding region by list of points
How can neutral atoms have exactly zero electric field when there is a difference in the positions of the charges?
Are all UTXOs locked by an address spent in a transaction?
3.5% Interest Student Loan or use all of my savings on Tuition?
Are all UTXOs locked by an address spent in a transaction?
UTXO all sent to change address?Signing transactions with un/compressed keyStatic receive address instead of dynamic?Processing multiple transactions very fastWhere to find UTXO Metadata APIHow can you consolidate your personal UTXO set? (different wallet answers welcomed)what happens to UTXOs when a transaction output script is satisfied?How many change outputs are there in a Bitcoin transactionI seem to have too many unspent outputs for my given balance. What am I missing?Use UTXOs before transaction is signed/broadcasted
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 transaction, where I now receive 8 BTC change as a single UTXO locked to my address, or as the value I want to spend can be covered by a single UTXO, is only one of the 5 BTC UTXOs spent by the transaction and I receive change in a new UTXO worth 3 BTC locked by my address. So now my address locks two UTXOs, one for 5 BTC which was not needed in this transaction, plus the change I just received for 3 BTC. Or something else?
utxo transaction-input address-reuse coin-selection
edited 1 hour ago
Murch♦
35.3k27115330
asked 2 hours ago
Simon O'HanlonSimon O'Hanlon
1184
New contributor
Simon O'Hanlon is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
add a comment |
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 transaction, where I now receive 8 BTC change as a single UTXO locked to my address, or as the value I want to spend can be covered by a single UTXO, is only one of the 5 BTC UTXOs spent by the transaction and I receive change in a new UTXO worth 3 BTC locked by my address. So now my address locks two UTXOs, one for 5 BTC which was not needed in this transaction, plus the change I just received for 3 BTC. Or something else?
utxo transaction-input address-reuse coin-selection
edited 1 hour ago
Murch♦
35.3k27115330
asked 2 hours ago
Simon O'HanlonSimon O'Hanlon
1184
New contributor
Simon O'Hanlon is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
As an aside, this question helps exemplify why address reuse is very bad for privacy: the person you pay 2 BTC to will be able to see that you control an address that holds many UTXOs, rather than just seeing the single UTXO that you spent to pay them. So with address reuse, you grant anyone you transact with the ability to see a much larger portion of your financial history.
– chytrik
55 mins ago
add a comment |
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 transaction, where I now receive 8 BTC change as a single UTXO locked to my address, or as the value I want to spend can be covered by a single UTXO, is only one of the 5 BTC UTXOs spent by the transaction and I receive change in a new UTXO worth 3 BTC locked by my address. So now my address locks two UTXOs, one for 5 BTC which was not needed in this transaction, plus the change I just received for 3 BTC. Or something else?
utxo transaction-input address-reuse coin-selection
edited 1 hour ago
Murch♦
35.3k27115330
asked 2 hours ago
Simon O'HanlonSimon O'Hanlon
1184
New contributor
Simon O'Hanlon is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
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 transaction, where I now receive 8 BTC change as a single UTXO locked to my address, or as the value I want to spend can be covered by a single UTXO, is only one of the 5 BTC UTXOs spent by the transaction and I receive change in a new UTXO worth 3 BTC locked by my address. So now my address locks two UTXOs, one for 5 BTC which was not needed in this transaction, plus the change I just received for 3 BTC. Or something else?
utxo transaction-input address-reuse coin-selection
utxo transaction-input address-reuse coin-selection
edited 1 hour ago
Murch♦
35.3k27115330
asked 2 hours ago
Simon O'HanlonSimon O'Hanlon
1184
New contributor
Simon O'Hanlon is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
edited 1 hour ago
Murch♦
35.3k27115330
asked 2 hours ago
Simon O'HanlonSimon O'Hanlon
1184
New contributor
Simon O'Hanlon is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
edited 1 hour ago
Murch♦
35.3k27115330
edited 1 hour ago
Murch♦
35.3k27115330
edited 1 hour ago
Murch♦
35.3k27115330
35.3k27115330
asked 2 hours ago
Simon O'HanlonSimon O'Hanlon
1184
New contributor
Simon O'Hanlon is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked 2 hours ago
Simon O'HanlonSimon O'Hanlon
1184
asked 2 hours ago
Simon O'HanlonSimon O'Hanlon
1184
1184
New contributor
Simon O'Hanlon is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
New contributor
Simon O'Hanlon is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
Simon O'Hanlon is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
As an aside, this question helps exemplify why address reuse is very bad for privacy: the person you pay 2 BTC to will be able to see that you control an address that holds many UTXOs, rather than just seeing the single UTXO that you spent to pay them. So with address reuse, you grant anyone you transact with the ability to see a much larger portion of your financial history.
– chytrik
55 mins ago
add a comment |
As an aside, this question helps exemplify why address reuse is very bad for privacy: the person you pay 2 BTC to will be able to see that you control an address that holds many UTXOs, rather than just seeing the single UTXO that you spent to pay them. So with address reuse, you grant anyone you transact with the ability to see a much larger portion of your financial history.
– chytrik
55 mins ago
As an aside, this question helps exemplify why address reuse is very bad for privacy: the person you pay 2 BTC to will be able to see that you control an address that holds many UTXOs, rather than just seeing the single UTXO that you spent to pay them. So with address reuse, you grant anyone you transact with the ability to see a much larger portion of your financial history.
– chytrik
55 mins ago
As an aside, this question helps exemplify why address reuse is very bad for privacy: the person you pay 2 BTC to will be able to see that you control an address that holds many UTXOs, rather than just seeing the single UTXO that you spent to pay them. So with address reuse, you grant anyone you transact with the ability to see a much larger portion of your financial history.
– chytrik
55 mins ago
add a comment |
1 Answer
1
active
oldest
votes
Transactions explicitly refer to which UTXOs they are spending.
You can construct a transaction which only spends one of the two 5-BTC UTXOs, and sends 2 BTC to the destination and 3 BTC to a (possibly new) address of yourself.
You can also construct a transaction which spends both, and sends 8 BTC back to yourself. Or it could have multiple outputs that send funds back to yourself, summing up to 8 BTC.
In short: there is nothing special about the two UTXOs that share an address, apart from the fact that the same key can sign for both - but it doesn't have to.
answered 2 hours ago
Pieter WuillePieter Wuille
47.2k399158
Thank you for this clear explanation of the wonderful flexibility of the UTXO model.
– Simon O'Hanlon
2 hours ago
add a comment |
Your Answer
StackExchange.ready(function() {
var channelOptions = {
tags: "".split(" "),
id: "308"
};
initTagRenderer("".split(" "), "".split(" "), channelOptions);
StackExchange.using("externalEditor", function() {
// Have to fire editor after snippets, if snippets enabled
if (StackExchange.settings.snippets.snippetsEnabled) {
StackExchange.using("snippets", function() {
createEditor();
});
}
else {
createEditor();
}
});
function createEditor() {
StackExchange.prepareEditor({
heartbeatType: 'answer',
autoActivateHeartbeat: false,
convertImagesToLinks: false,
noModals: true,
showLowRepImageUploadWarning: true,
reputationToPostImages: null,
bindNavPrevention: true,
postfix: "",
imageUploader: {
brandingHtml: "Powered by u003ca class="icon-imgur-white" href="https://imgur.com/"u003eu003c/au003e",
contentPolicyHtml: "User contributions licensed under u003ca href="https://creativecommons.org/licenses/by-sa/3.0/"u003ecc by-sa 3.0 with attribution requiredu003c/au003e u003ca href="https://stackoverflow.com/legal/content-policy"u003e(content policy)u003c/au003e",
allowUrls: true
},
noCode: true, onDemand: true,
discardSelector: ".discard-answer"
,immediatelyShowMarkdownHelp:true
});
}
});
Simon O'Hanlon is a new contributor. Be nice, and check out our Code of Conduct.
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
StackExchange.ready(
function () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fbitcoin.stackexchange.com%2fquestions%2f85113%2fare-all-utxos-locked-by-an-address-spent-in-a-transaction%23new-answer', 'question_page');
}
);
Post as a guest
Required, but never shown
1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
Transactions explicitly refer to which UTXOs they are spending.
You can construct a transaction which only spends one of the two 5-BTC UTXOs, and sends 2 BTC to the destination and 3 BTC to a (possibly new) address of yourself.
You can also construct a transaction which spends both, and sends 8 BTC back to yourself. Or it could have multiple outputs that send funds back to yourself, summing up to 8 BTC.
In short: there is nothing special about the two UTXOs that share an address, apart from the fact that the same key can sign for both - but it doesn't have to.
answered 2 hours ago
Pieter WuillePieter Wuille
47.2k399158
Thank you for this clear explanation of the wonderful flexibility of the UTXO model.
– Simon O'Hanlon
2 hours ago
add a comment |
Transactions explicitly refer to which UTXOs they are spending.
You can construct a transaction which only spends one of the two 5-BTC UTXOs, and sends 2 BTC to the destination and 3 BTC to a (possibly new) address of yourself.
You can also construct a transaction which spends both, and sends 8 BTC back to yourself. Or it could have multiple outputs that send funds back to yourself, summing up to 8 BTC.
In short: there is nothing special about the two UTXOs that share an address, apart from the fact that the same key can sign for both - but it doesn't have to.
answered 2 hours ago
Pieter WuillePieter Wuille
47.2k399158
Thank you for this clear explanation of the wonderful flexibility of the UTXO model.
– Simon O'Hanlon
2 hours ago
add a comment |
Transactions explicitly refer to which UTXOs they are spending.
You can construct a transaction which only spends one of the two 5-BTC UTXOs, and sends 2 BTC to the destination and 3 BTC to a (possibly new) address of yourself.
You can also construct a transaction which spends both, and sends 8 BTC back to yourself. Or it could have multiple outputs that send funds back to yourself, summing up to 8 BTC.
In short: there is nothing special about the two UTXOs that share an address, apart from the fact that the same key can sign for both - but it doesn't have to.
answered 2 hours ago
Pieter WuillePieter Wuille
47.2k399158
Transactions explicitly refer to which UTXOs they are spending.
You can construct a transaction which only spends one of the two 5-BTC UTXOs, and sends 2 BTC to the destination and 3 BTC to a (possibly new) address of yourself.
You can also construct a transaction which spends both, and sends 8 BTC back to yourself. Or it could have multiple outputs that send funds back to yourself, summing up to 8 BTC.
In short: there is nothing special about the two UTXOs that share an address, apart from the fact that the same key can sign for both - but it doesn't have to.
answered 2 hours ago
Pieter WuillePieter Wuille
47.2k399158
answered 2 hours ago
Pieter WuillePieter Wuille
47.2k399158
answered 2 hours ago
Pieter WuillePieter Wuille
47.2k399158
answered 2 hours ago
Pieter WuillePieter Wuille
47.2k399158
47.2k399158
Thank you for this clear explanation of the wonderful flexibility of the UTXO model.
– Simon O'Hanlon
2 hours ago
add a comment |
Thank you for this clear explanation of the wonderful flexibility of the UTXO model.
– Simon O'Hanlon
2 hours ago
Thank you for this clear explanation of the wonderful flexibility of the UTXO model.
– Simon O'Hanlon
2 hours ago
Thank you for this clear explanation of the wonderful flexibility of the UTXO model.
– Simon O'Hanlon
2 hours ago
add a comment |
Simon O'Hanlon is a new contributor. Be nice, and check out our Code of Conduct.
Simon O'Hanlon is a new contributor. Be nice, and check out our Code of Conduct.
Simon O'Hanlon is a new contributor. Be nice, and check out our Code of Conduct.
Simon O'Hanlon is a new contributor. Be nice, and check out our Code of Conduct.
Thanks for contributing an answer to Bitcoin Stack Exchange!
- Please be sure to answer the question. Provide details and share your research!
But avoid …
- Asking for help, clarification, or responding to other answers.
- Making statements based on opinion; back them up with references or personal experience.
To learn more, see our tips on writing great answers.
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
StackExchange.ready(
function () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fbitcoin.stackexchange.com%2fquestions%2f85113%2fare-all-utxos-locked-by-an-address-spent-in-a-transaction%23new-answer', 'question_page');
}
);
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
As an aside, this question helps exemplify why address reuse is very bad for privacy: the person you pay 2 BTC to will be able to see that you control an address that holds many UTXOs, rather than just seeing the single UTXO that you spent to pay them. So with address reuse, you grant anyone you transact with the ability to see a much larger portion of your financial history.
– chytrik
55 mins ago