Maximum number of inputs per transaction Planned maintenance scheduled April 23, 2019 at 23:30 UTC (7:30pm US/Eastern) Announcing the arrival of Valued Associate #679: Cesar Manara Unicorn Meta Zoo #1: Why another podcast?Can we interpret a rolling average transaction count per block as the 'adoption curve' for Bitcoin?Recommended Transaction SizeOptimising the inputs for a transactionWhat is the maximum number of output addresses I can send to with one bitcoin transaction?Get transaction fees per transaction via gettransactionWhat would be the implications of limiting Bitcoin transactions to fifty inputs?Determine inputs/outputs of a transaction before sendingIs there a maximum fee per byte in satoshis?Why does Bitcoin need transaction fees prior to hitting its maximum coin limit?What happens if “transaction size” is larger than “maximum block size”?
NERDTreeMenu Remapping
White walkers, cemeteries and wights
Central Vacuuming: Is it worth it, and how does it compare to normal vacuuming?
One-one communication
Is there hard evidence that the grant peer review system performs significantly better than random?
Printing attributes of selection in ArcPy?
What does 丫 mean? 丫是什么意思？
Tannaka duality for semisimple groups
Moving a wrapfig vertically to encroach partially on a subsection title
What does Turing mean by this statement?
Is multiple magic items in one inherently imbalanced?
Does silver oxide react with hydrogen sulfide?
Is openssl rand command cryptographically secure?
What are the main differences between Stargate SG-1 cuts?
Should a wizard buy fine inks every time he want to copy spells into his spellbook?
Is there public access to the Meteor Crater in Arizona?
GDP with Intermediate Production
Delete free apps from library
How to change the tick of the color bar legend to black
What is the chair depicted in Cesare Maccari's 1889 painting "Cicerone denuncia Catilina"?
Asymptotics question
Resize vertical bars (absolute-value symbols)
A term for a woman complaining about things/begging in a cute/childish way
How to write capital alpha?
Maximum number of inputs per transaction
Planned maintenance scheduled April 23, 2019 at 23:30 UTC (7:30pm US/Eastern)
Announcing the arrival of Valued Associate #679: Cesar Manara
Unicorn Meta Zoo #1: Why another podcast?Can we interpret a rolling average transaction count per block as the 'adoption curve' for Bitcoin?Recommended Transaction SizeOptimising the inputs for a transactionWhat is the maximum number of output addresses I can send to with one bitcoin transaction?Get transaction fees per transaction via gettransactionWhat would be the implications of limiting Bitcoin transactions to fifty inputs?Determine inputs/outputs of a transaction before sendingIs there a maximum fee per byte in satoshis?Why does Bitcoin need transaction fees prior to hitting its maximum coin limit?What happens if “transaction size” is larger than “maximum block size”?
In theory, what is the maximum number of inputs per transaction? Is it defined primarily by the maximum number we can store on the 9 byte varint?
How big of a number can be stored on 9 bytes?
Would such a transaction even fit in a block if it had just 1 output?
transactions transaction-input input
asked Apr 2 at 4:19
Pedro GonçalvesPedro Gonçalves
646
add a comment |
In theory, what is the maximum number of inputs per transaction? Is it defined primarily by the maximum number we can store on the 9 byte varint?
How big of a number can be stored on 9 bytes?
Would such a transaction even fit in a block if it had just 1 output?
transactions transaction-input input
asked Apr 2 at 4:19
Pedro GonçalvesPedro Gonçalves
646
add a comment |
In theory, what is the maximum number of inputs per transaction? Is it defined primarily by the maximum number we can store on the 9 byte varint?
How big of a number can be stored on 9 bytes?
Would such a transaction even fit in a block if it had just 1 output?
transactions transaction-input input
asked Apr 2 at 4:19
Pedro GonçalvesPedro Gonçalves
646
In theory, what is the maximum number of inputs per transaction? Is it defined primarily by the maximum number we can store on the 9 byte varint?
How big of a number can be stored on 9 bytes?
Would such a transaction even fit in a block if it had just 1 output?
transactions transaction-input input
transactions transaction-input input
asked Apr 2 at 4:19
Pedro GonçalvesPedro Gonçalves
646
asked Apr 2 at 4:19
Pedro GonçalvesPedro Gonçalves
646
asked Apr 2 at 4:19
Pedro GonçalvesPedro Gonçalves
646
asked Apr 2 at 4:19
Pedro GonçalvesPedro Gonçalves
646
asked Apr 2 at 4:19
Pedro GonçalvesPedro Gonçalves
646
646
add a comment |
add a comment |
1 Answer
1
active
oldest
votes
No, the number that can be represented by the varint has no effect on the maximum number of inputs. That number is far too large. Rather the maximum number of inputs is constrained by the block size.
If it really matters to you what the maximum number that a varint can represent is, it's just the maximum value for a 64-bit integer. That's 0xffffffffffffffff. There's really no constraints on what a varint can represent. A transaction with such a number of inputs would not fit in a block, nor would it fit on any existing single storage medium as that transaction would be at least 664.1 Exabytes in size.
The maximum number of inputs that can fit in a valid transaction is 27022.
Such a transaction would not use segwit, so we use the maximum block size without segwit of 1000000 bytes. Subtract the 146 for the header and coinbase transaction to get 999854 bytes for the transaction. Subtract 4 bytes for the version, 4 bytes for the locktime, 1 byte for output count, 8 bytes for output value, 1 byte for output script, and 2 bytes for input count. This leaves us with 999833 bytes. With 37 bytes per input (32 previous txid, 4 output index, and 1 for script length), there can by 27022 inputs.
answered Apr 2 at 5:19
Andrew Chow♦Andrew Chow
33.7k42462
2
To note, that includes zero security or signatures.
– Anonymous
Apr 2 at 6:11
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
);
);
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%2f85752%2fmaximum-number-of-inputs-per-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
No, the number that can be represented by the varint has no effect on the maximum number of inputs. That number is far too large. Rather the maximum number of inputs is constrained by the block size.
If it really matters to you what the maximum number that a varint can represent is, it's just the maximum value for a 64-bit integer. That's 0xffffffffffffffff. There's really no constraints on what a varint can represent. A transaction with such a number of inputs would not fit in a block, nor would it fit on any existing single storage medium as that transaction would be at least 664.1 Exabytes in size.
The maximum number of inputs that can fit in a valid transaction is 27022.
Such a transaction would not use segwit, so we use the maximum block size without segwit of 1000000 bytes. Subtract the 146 for the header and coinbase transaction to get 999854 bytes for the transaction. Subtract 4 bytes for the version, 4 bytes for the locktime, 1 byte for output count, 8 bytes for output value, 1 byte for output script, and 2 bytes for input count. This leaves us with 999833 bytes. With 37 bytes per input (32 previous txid, 4 output index, and 1 for script length), there can by 27022 inputs.
answered Apr 2 at 5:19
Andrew Chow♦Andrew Chow
33.7k42462
2
To note, that includes zero security or signatures.
– Anonymous
Apr 2 at 6:11
add a comment |
No, the number that can be represented by the varint has no effect on the maximum number of inputs. That number is far too large. Rather the maximum number of inputs is constrained by the block size.
If it really matters to you what the maximum number that a varint can represent is, it's just the maximum value for a 64-bit integer. That's 0xffffffffffffffff. There's really no constraints on what a varint can represent. A transaction with such a number of inputs would not fit in a block, nor would it fit on any existing single storage medium as that transaction would be at least 664.1 Exabytes in size.
The maximum number of inputs that can fit in a valid transaction is 27022.
Such a transaction would not use segwit, so we use the maximum block size without segwit of 1000000 bytes. Subtract the 146 for the header and coinbase transaction to get 999854 bytes for the transaction. Subtract 4 bytes for the version, 4 bytes for the locktime, 1 byte for output count, 8 bytes for output value, 1 byte for output script, and 2 bytes for input count. This leaves us with 999833 bytes. With 37 bytes per input (32 previous txid, 4 output index, and 1 for script length), there can by 27022 inputs.
answered Apr 2 at 5:19
Andrew Chow♦Andrew Chow
33.7k42462
2
To note, that includes zero security or signatures.
– Anonymous
Apr 2 at 6:11
add a comment |
No, the number that can be represented by the varint has no effect on the maximum number of inputs. That number is far too large. Rather the maximum number of inputs is constrained by the block size.
If it really matters to you what the maximum number that a varint can represent is, it's just the maximum value for a 64-bit integer. That's 0xffffffffffffffff. There's really no constraints on what a varint can represent. A transaction with such a number of inputs would not fit in a block, nor would it fit on any existing single storage medium as that transaction would be at least 664.1 Exabytes in size.
The maximum number of inputs that can fit in a valid transaction is 27022.
Such a transaction would not use segwit, so we use the maximum block size without segwit of 1000000 bytes. Subtract the 146 for the header and coinbase transaction to get 999854 bytes for the transaction. Subtract 4 bytes for the version, 4 bytes for the locktime, 1 byte for output count, 8 bytes for output value, 1 byte for output script, and 2 bytes for input count. This leaves us with 999833 bytes. With 37 bytes per input (32 previous txid, 4 output index, and 1 for script length), there can by 27022 inputs.
answered Apr 2 at 5:19
Andrew Chow♦Andrew Chow
33.7k42462
No, the number that can be represented by the varint has no effect on the maximum number of inputs. That number is far too large. Rather the maximum number of inputs is constrained by the block size.
If it really matters to you what the maximum number that a varint can represent is, it's just the maximum value for a 64-bit integer. That's 0xffffffffffffffff. There's really no constraints on what a varint can represent. A transaction with such a number of inputs would not fit in a block, nor would it fit on any existing single storage medium as that transaction would be at least 664.1 Exabytes in size.
The maximum number of inputs that can fit in a valid transaction is 27022.
Such a transaction would not use segwit, so we use the maximum block size without segwit of 1000000 bytes. Subtract the 146 for the header and coinbase transaction to get 999854 bytes for the transaction. Subtract 4 bytes for the version, 4 bytes for the locktime, 1 byte for output count, 8 bytes for output value, 1 byte for output script, and 2 bytes for input count. This leaves us with 999833 bytes. With 37 bytes per input (32 previous txid, 4 output index, and 1 for script length), there can by 27022 inputs.
answered Apr 2 at 5:19
Andrew Chow♦Andrew Chow
33.7k42462
edited Apr 2 at 5:24
answered Apr 2 at 5:19
Andrew Chow♦Andrew Chow
33.7k42462
answered Apr 2 at 5:19
Andrew Chow♦Andrew Chow
33.7k42462
answered Apr 2 at 5:19
Andrew Chow♦Andrew Chow
33.7k42462
33.7k42462
2
To note, that includes zero security or signatures.
– Anonymous
Apr 2 at 6:11
add a comment |
2
To note, that includes zero security or signatures.
– Anonymous
Apr 2 at 6:11
2
2
To note, that includes zero security or signatures.
– Anonymous
Apr 2 at 6:11
To note, that includes zero security or signatures.
– Anonymous
Apr 2 at 6:11
add a comment |
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%2f85752%2fmaximum-number-of-inputs-per-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
