Questions tagged [transaction-weight]
The transaction-weight tag has no usage guidance.
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How to calculate transaction size before sending (Legacy Non-Segwit - P2PKH/P2SH)
I know that I pay the transaction fee per kB, so how can I calculate how large the transaction will be before I send it via the RPC api. I run a site using bitcoins, and I cannot let the user's ...
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Is there a difference between bytes and virtual bytes (vbytes)?
In an Optech newsletter, size is referred to using vbytes. Is there a difference between vbytes and bytes? If so, what is the difference?
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What is the maximum number of inputs/outputs a transaction can have?
Is there a maximum recommended number of inputs/outputs for each transaction? I was scripting a faucet and wasn't sure whether to payout in one transaction to all addresses or split them into groups ...
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How do virtual size, stripped size and raw size compare between legacy address formats and native segwit?
This answer states that SegWit doesn't reduce transaction size. If this is true, why is it cheaper to send a SegWit transaction?
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How is the size of a bitcoin transaction calculated
From what I understand, the fees set on bitcoin transaction are based on a recommended fee (mostly, from a 3rd party service) per byte of the transaction size. What I am curious about is how do ...
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How does SegWit reduce transaction size, when the signature is simply moved to another part of the transaction?
This video explains that the signature is moved out of the input section and moved to the new one called the witness. From what I can tell, the witness signature is still contained in this transaction ...
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What is the size of different Bitcoin transaction types?
I found this interesting take on Bitcoin transaction type trends from 2015.
As that article is from 2 years ago, I am wondering:
a. Are there any newer transaction types?
b. What is the average ...
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Is there an economic incentive to switch from P2WPKH to P2TR?
I have multiple times seen people argue that there is “no economic incentive” to switch from P2WPKH to P2TR. I know that the sum of input and output weight on P2WPKH and P2TR are very similar, but how ...
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Benefits of Bech32 addresses?
In Bitcoin core, when generating a new address for receiving a payment, you get this dialogue:
There is a tick-box for "Generate Bech32 address".
I understand that this is a relatively new feature ...
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What is signature grinding?
What is signature grinding and why does the answer to What is the size and weight of a wrapped segwit single-sig input? "highly recommend it"?
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How big is the input of a P2PKH transaction?
How many bytes does a P2PKH input have? I'm finding a few different numbers:
Why does the default miner implementation use pay-to-pubkey? states:
push + sig + push + key = 1 + 72 + 1 + 61 = 139
...
- 72.7k
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How much blockspace would it take to spend the complete UTXO set?
I was curious how much blockspace has already been spoken for in the future. Paraphrased:
Assuming all block space were used to consolidate the UTXO set in the most efficient manner (and all key ...
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What are the minimum sizes for transactions and blocks in Bitcoin?
I have gone through many research articles but couldn't find out what the minimum sizes of a transaction and a block are.
Is there any reference where I can find an answer to my question?
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Why does BIP141 define both virtual transaction size and weight?
Why does BIP 141 (segwit) define both virtual transaction size and weight?
Weight seems to be just four times virtual transaction size (or vice versa, depending on what you define first). Why are ...
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What are the sizes of single-sig and 2-of-3 multisig taproot inputs?
There was a Twitter discussion about the sizes of inputs and Taproot came up. What are the input sizes for Taproot inputs?
Please cover both the key path spend (single-sig or default spend) and 2-of-...
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What is the maximum size transaction that will be relayed by bitcoin nodes using the default configuration?
I understand that the actual size limit of a transaction is determined by the block size, as we can see from this absolute unit. But transactions this large must be submitted directly to a mining pool ...
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What is the size and weight of a P2WPKH input?
I'm investigating diverging P2WPKH input size calculations on two Bitcoin projects and some blog posts. I'm looking for a detailed explanation of the exact weight, vsize and serialized length of a ...
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On chain cost of Segwit version 1 versus version 0
How do total blockchain cost for Segwit version 0 compare to version 1 which is being proposed? I'm specifically interested in a single user transactions – both paying to public key (or pk hash) and ...
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What is considered witness data in SegWit?
What fields in a transaction are considered witness data? I need this to calculate the vsize for fee.
My understanding is these are marker, flag and witness (from 1 and 2).
Or is it just witness, ...
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Is it possible for the `size` and `vsize` to be the same for a valid segwit (bech32) transaction?
I'm aware that for non-segwit transactions, vsize is always the same as size. But is it possible for a valid transaction to include size=vsize when involving segwit inputs/outputs?
This particular ...
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What is the maximum number of taproot transactions that can be mined in a single block?
If all transactions in a block were spending one p2tr output using the key-path spend and sending to a p2tr output, how many of these transactions could we fit in a single block?
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How to calculate the size of multisig transaction?
Can you help or suggest the formula for calculation of simple multi-sig transactions?
I have an issue to calculate the size of multi signature 2-2 transaction.
I tried to follow this:
Predict ...
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How much does the weight of 2-of-3 multisignature inputs differ between P2SH and P2SH-P2WSH?
I'm trying to calculate the weight of a 2-of-3 multisignature P2SH-P2WSH input. I found the related question Predict multi signature transaction size, which I've calculated with m=2, n=3 here:
...
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What defines the standard Bitcoin transaction size? [duplicate]
The Lightning Network specifications limit the number of (unsettled) HTLCs in a channel to 483 at each side (maximum 967 total). The rationale behind this is that the penalty transaction must be under ...
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What happens if "transaction size" is larger than "maximum block size"?
Assuming a transaction size is T Bytes, while maximum block size is B Bytes, such that T>B.
What happens for this transaction?
It will be divided into two smaller parts and will be stored in two ...
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UTXO Model and Trans Fee / Kb Clarification
I have been working on understanding the inputs/outputs and transaction details as according to the UTXO model which is discussed in this question and also thinking about how it relates to transaction ...
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How to accurately calculate the vsize of a transaction?
there's a transaction txid is fa3467452918627ebd63a3e8570e70d38b0eefef683347510b204ba6962ebe44,
using bitcoin-cli we can see it's size,vsize and weight
we can get it's hex and it's accurately 225.
...
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What is the weight of a P2TR input?
I'm looking for a detailed explanation of the weight, vsize and serialized length of a P2TR input, in the same vein as How big is the input of a P2PKH transaction?.
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Upper bound on the Bitcoin transaction size [duplicate]
Assume that I want to store some arbitrary data on the Bitcoin blockchain via a single transaction.
Question: Is there any upper bound on the size of data I want to send via a single transaction?
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Does total size of the transaction affect confirmation time?
Suppose one pays 1 satoshi/byte for their transactions.
Will the confirmation of the two transaction below be different?
A) a transaction of 1 inputs and 1 output (~192 bytes)
B) a transaction of ...
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Would exchanges save block space by defaulting deposit addresses to P2TR? [duplicate]
If inputs weigh less in P2TR than other address types, and exchanges conduct big batch transactions for withdrawals, is there a significant efficiency gain in block space they consume if most of their ...
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Is there a limit on the number and size of script inputs when spending a script path in a P2TR transaction?
From BIP 341,
Spending using one of the scripts: A Taproot output can be spent by satisfying any of the scripts used in its construction. To do so, a witness stack consisting of the script's inputs, ...
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What's cheaper, musig or multisig?
Taproot transactions aren't always cheaper onchain compared to their segwit native counterparts. How does the current MuSig spec fare compared to multisig onchain? Is one always cheaper than the other ...
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Understand how transaction size and fees calculation works in caravan
Looks like there is no activity in caravan github repository so maybe someone here can help me with this issue. Already mentioned everything in the below link however my three basic questions are:
...
user103136
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Will Segwit embedded inside P2SH save fee compared to P2PKH?
How much transaction fee will Segwit embedded inside P2SH save fee compared to P2PKH?
Update 1
I found a similar question.
or they can be nested in a legacy P2SH 3... address which are backwards-...
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What size does a transaction have?
Transaction size should be the same right? I get that there were updates to the btc network that changes the size of transactions. But if you just look at transactions since the last updates, how big ...
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What is the difference between the txsize in mempool and mempool dynamic usage?
There is a table for the txsize in mempool and dynamic memory usage of mempool on statoshi.info's mempool overview?
The default size of mempool defined in Bitcoin is 300MB, so is this default size the ...
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What is the absolute smallest size of the data (bytes) that a blockchain transaction could possibly be?
I am looking into completing blockchain transactions over an extremely limited data transport channel. Think even more limited than a satellite connection. The maximum payload I can send at any one ...
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What is the maximum size for SegWit transactions?
Before SegWit was activated, transactions were limited to 100,000 bytes or 100 kB. Bigger transactions were non-standard.
What is the limit for transaction size after the activation of SegWit?
Is ...
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What is the exact size and weight of a 2-of-2 P2WSH input?
I'm proofreading an article mentioning the cost reduction of P2TR for Lightning channels in comparison to P2WSH. To that end, I'm looking for the precise weight, vsize and serialized length of a 2-of-...
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Why is the discount on segWit data exactly a factor of 4 and not 5, 6 or something higher?
According to BIP141, the formula for calculating block/transaction weight is:
BASE SIZE * 3 + TOTAL SIZE
According to Bitcoin wiki (and also based on the above formula):
Each byte of the segwit ...
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How to get transaction size as byte before send with Python's bit library?
I am using bit library to make a Bitcoin transaction.
I can use methods like this:
key.create_transaction([('1Archive1n2C579dMsAu3iC6tWzuQJz8dN', 190, 'jpy')])
or
key.send([('...
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How is this 1 input 2 output tx larger than this 2 input 2 output tx?
I saw the following liquid transaction with one input and two outputs is byte-wise bigger than another liquid transaction with two inputs and two outputs. How is this possible?
One input transaction (...
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Can larger transactions have a lesser fee per byte than smaller ones and still get equally treated?
Is the term "volume discounting" applicable in bitcoin transactions, meaning can a user pay less satoshi/Byte if a few transactions are bundled into one?
In other words, would a fee for a ...
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Trying to calculate the average fee per tx, but can't get the right value
We are creating a cryptocurrency analytics website and I was wondering how one can calculate the average transaction fee for Bitcoin. For example, like on these three sources.
https://www.blockchain....
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What is the size and weight of a wrapped segwit single-sig input?
I'm looking for a detailed explanation of the exact weight, vsize and serialized length of a P2SH-P2WPKH (wrapped-segwit single-sig) input, in the same vein as How big is the input of a P2PKH ...
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Most transactions in a block
Block 689074 had 4,463 transactions.
Is this the highest number of transactions in a block until now?
What are the things that affect the number of transactions possible in a block?
Few observations ...
user103136
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regarding transaction size in a block
In What are the minimum sizes for transactions and blocks in Bitcoin?
The first transaction is set to be 65 bytes long, due to coinbase requirements. What about the second one ? That can be 61 bytes ...
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Coinbase transaction smaller than .001 btc? & Blockchain says my Bitcoincore wallet is invalid
I'm trying to figure out how to send tiny transactions, like 10 cents. Coinbase says the minimum is .001btc. That seems rather large. Is that just a coinbase requirement?
Also, my blockchain wallet ...
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re : minimum sizes of transactions and blocks
I see there's a similar question provided here:
What are the minimum sizes for transactions and blocks in Bitcoin?
But the answer provided might be not correct in the light that "A valid transaction ...
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