Questions tagged [block-weight]

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1answer
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Concept of Block weight and segwit are still unclear

It seems like duplicated question, but i read many articles and posts to undestand about segwit. Below links are something i read What is block weight and how is it different from block size? After ...
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2answers
105 views

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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2answers
1k views

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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1answer
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Can SegWit block weight be increased without a hard fork?

I know segwit's block weight is 4MB. Can it be increased without a hard fork? If no, was that option even considered, and is it even possible?
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1answer
146 views

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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1answer
393 views

How much will Segwit *actually* increase bitcoin capacity for realistic transactions?

I often see claims that Segwit increases transactions per block by 1.7x to 2x. I'm not sure if this is true, but if I do the math myself, I don't get this number. My understanding is: 1) The “weight”...
5
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1answer
654 views

Why does the Segwit developer guide recommend to estimate fees on basis of vsize instead of weight?

The Segwit Wallet Development Guide has a small section on fee estimation: Transaction Fee Estimation Instead of transaction size, a new metric is defined, called “virtual size” (vsize) ...
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1answer
372 views

How much does the weight of 2-of-3 multisignature inputs change 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 out with m=2, n=3 here: ...
3
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1answer
79 views

Do sigops count towards the block weight in SegWit?

I was just rereading the SegWit benefits page and noticed that the section Moving towards a single combined block limit contains an example in which sigops count towards the blockweight. Did this ...
4
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2answers
1k views

What is block weight and how is it different from block size?

While reading about BIP141, I have encountered the following options: Block creation options: -blockmaxweight=<n> Set maximum BIP141 block weight (default: 3000000) -blockmaxsize=<n> ...
5
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1answer
617 views

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 ...