Questions tagged [block-size-increase]

This tag collects questions discussing the plans and arguments around the Block size limit increase from 1MB.

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21
votes
2answers
4k views

What are the arguments for and against the increase of the block size limit?

Can someone give a quick point by point list, what arguments the proponents and opponents of increased blocksize have for their case?
18
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1answer
972 views

What is “segregated witness” and how can it improve network scalability?

I've just heard about it, and it is claimed to be a "turning point" in the block-size debate. What is "segregated witness?" how does it work? How can it be used for improving network scalability? ...
16
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2answers
405 views

How thoroughly has Segregated Witness been tested?

I've encountered claims that Segregated Witness was "not really tested" and is being "rushed". It is my understanding that SegWit had been running on Elements for more than half a year already, and ...
15
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2answers
2k views

What's the purpose of a maximum block size?

Bitcoin has a maximum of 1 MB of transaction data in each block. Why is this limit present? When was it added? Was it intended to be temporary?
12
votes
1answer
1k views

How many more transactions per second will be possible with SegWit?

On a percentage basis compared to the current theoretical limit how many more transactions per second will be possible after SegWit? Will the answer to number 1 scale linearly with block size ...
10
votes
1answer
787 views

Cryptocurrency with small block size limit or large block time

So there are a lot of cryptocurrencies that tries to improve on Bitcoin's 1 Mb block size limit and 10 minute block time (6MB per hour) by using faster block times or larger block size limits. For ...
9
votes
1answer
2k views

Is SegWit a blocksize increase or more efficient use of blockspace?

This question gets asked frequently on reddit, and I think it would be beneficial to have a canonical answer here: Is SegWit a blocksize increase or more efficient use of blockspace?
9
votes
1answer
582 views

Why would increasing the Bitcoin block size lead to a more centralised system?

Why does Bitcoin Core contributor Peter Todd think that increasing the Bitcoin block size would lead to a more centralised system? “The system doesn’t scale, and you just have to accept that and do ...
8
votes
1answer
465 views

What is the Lightning Network proposal? What problem is it trying to solve?

We already have a few questions about technical details of Lightning network, however, … What is the Lightning network proposal in the first place? What problem is it aiming to solve?
6
votes
1answer
195 views

What is bitcoin core developers solution to the increasing number of transactions?

I was reading that BitcoinXT is created to increase the blocksize to accommodate increasing transaction volume, but bitcoin core developers were against to it as it make the currency more centralized. ...
6
votes
2answers
230 views

If there is a block-size hard fork, will the old chain have an advantage?

On his blog, Mircea Popescu claims the old chain will have an advantage: The situation here is aggravated by the fact that the fork proposed is not simply nondeterministic behaviour, and so the ...
6
votes
1answer
578 views

Reduce bitcoin blockchain size

I have a freebsd server with a bitcoind server. But the blockchain is getting to large for me. So I just bought some new sas drives so I can keep it up. I now have 218GB of total space. 40GB is for ...
5
votes
3answers
459 views

There's talk of increasing the blocksize - if this can be achieved - does this mean that the 21m btc limit can also be changed?

My understanding of the blocksize debate is that it would require 51% consensus to change the algorithm and accept the new blocksize. If the algorithm can be changed like this - would the exact same ...
5
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6answers
1k views

can blocks remain capped to 1MB forever?

this is perhaps more of an economics question than a bitcoin question, but i'm wondering if it would be viable to leave the block size capped at 1MB for all time and simply let a series of rules ...
5
votes
1answer
546 views

Bandwidth required for Bitcoin going global?

Something that I feel might be the obstacle against Bitcoin going global -- but which I've never seen anyone mention -- is this: If Bitcoin goes global, I think it's possible that the number of ...
5
votes
2answers
331 views

What is the impact of Bitcoin XT fork on current Bitcoin holders?

I was reading that there was disagreement on the block size limit and Bitcoin has been forked to Bitcoin XT? With two different flavors of the software running, which might result in two different ...
5
votes
1answer
252 views

Why do people say that bitcoin scales according to O(n^2)?

In regards to bitcoin, Peter Todd says: "Fundamentally the tech itself does not scale. The whole idea of everyone knowing everything about every transaction, which is inherent to the trust model of ...
4
votes
2answers
77 views

Is the block size limit miners'-only thing, or should users participate?

Lately I see a lot of back and forth between proponents and opponents of block size increase debate. I have made up my mind about this, but neither side provides any directions on how I can indicate ...
4
votes
1answer
110 views

Does any current SegWit or blocksize increase proposal also seek an increase in the OP_RETURN byte limit?

Does any current SegWit or blocksize increase proposal also seek an increase in the OP_RETURN byte limit? https://en.bitcoin.it/wiki/OP_RETURN Are there any current pull requests that seek an ...
4
votes
2answers
395 views

If block sizes go up, won't sigop limits have to change too?

Gavin Andresen, one of the core developers, has discussed increasing the block size to 16.7 MB (and doubling that every two years). The maximum number of signature operations per block is currently ...
4
votes
1answer
411 views

What is the status of the “Hong Kong Agreement”

Are the bullet points below still valid? We understand that SegWit continues to be developed actively as a soft-fork and is likely to proceed towards release over the next two months, as originally ...
4
votes
1answer
228 views

Why do bigger blocks make it more expensive to run a full node?

Does it cost more storage? For the transaction verification, to which extent bigger blocks make it more computational intensive? In terms of computational complexity, is the verification process a O(n)...
4
votes
1answer
63 views

Does the node count reflect the mining power support of different Bitcoin versions?

In the current Bitcoin blocksize debate, xtnodes.com shows a pie chart of nodes running different implementations of Bitcoin; Classic, XT and Unlimited, etc. Does this node count in any way reflect ...
4
votes
1answer
474 views

Why increasing block size increases centralisation?

I understand this is a contentious question. Help me understand Why increasing block size increases the risk of centralization? I don't understand what Antonopoulos meant when he said few people can ...
3
votes
1answer
1k views

What is “Emergent Consensus” as a Mining Pool Support proposal?

I would regularly check coin.dance/blocks for updates on Segregated Witness and Bitcoin Unlimited popularity among miners. Another proposal called "Emergent Consensus" has appeared. Could someone ...
3
votes
2answers
620 views

Why is it dangerous to hard fork the Bitcoin network?

In the blocksize debate it is often stated that hard forks are dangerous. This is sometimes supported by the claim that "people may lose money and must be protected". And that it's impossible to ...
3
votes
2answers
353 views

Are blocks sent only after finding nonce?

One of the concerns with increasing the block size is that it may get orphaned more often due to network latency in sending the big block. Why can't miners send the block without the nonce as soon as ...
3
votes
2answers
2k views

What is the difference between on-chain scaling and off-chain scaling?

What is on-chain scaling and off-chain scaling? What is the core difference between on-chain scaling and off-chain scaling?
3
votes
2answers
211 views

What are some essential features of Bitcoin classic?

I already know about the 2MB block size increase. I would like to know more about who controls the code base, what the other proposed changes are, and those kinds of things.
3
votes
2answers
419 views

How relevant is the Chinese Great Firewall in the blocksize debate?

Mike Hearn said the following: The reason the true limit seems to be 700 kilobytes instead of the theoretical 1000 is that sometimes miners produce blocks smaller than allowed and even empty blocks,...
3
votes
2answers
317 views

Do larger blocks make it harder for smaller miners to compete? Why?

During the discussion of Bitcoin’s scalability, I’ve read the statement that "Large miners benefit from larger block sizes, because it makes it more difficult for small miners to compete." [1] In ...
3
votes
1answer
919 views

BIP 100: What votes are possible?

I understand that, with BIP 100 as suggested by Jeff Garzik, in the first step the maximum block size can be increased from (then, after the hard fork) 2 MByte to at most double of that, so 4 MByte - ...
3
votes
1answer
183 views

Growth Dependent Block Size Limit

Could the 1MB block size limit be replaced with a growth-dependent limit? From what I have read (here, for example) the 1MB limit is to prevent spamming of the blockchain. And if/when Bitcoin becomes ...
3
votes
1answer
97 views

Why does a larger block size infer a bigger attack vector

I have read this in several articles that larger block sizes makes adversarial attacks easier. What I wonder is why is that so obvious? is it because in a larger block the number of transactions could ...
3
votes
1answer
88 views

Why bigger blocks will bring bigger memory usage for miners?

I see the different proposals for the block size and I keep wondering why bigger blocks means a bigger chain ? If the block limit size will rise to twenty-megabyte, it is just a limit, to fill it it ...
3
votes
3answers
634 views

What happens when more transactions are created than confirmed? [duplicate]

I am surprised that there are 220k unconfirmed transactions in the blockchain. And more transactions are getting queued in every minute. If 6 blocks are mined in every hour then in an hour only 12000 ...
2
votes
1answer
721 views

Why not decrease the difficulty to increase capacity?

There is a persistent debate in Bitcoin about increasing the capacity. The popular idea seems to be to increase the blocksize from its current 1MB to push through more transactions per block. But ...
2
votes
3answers
345 views

Does Blockstream have a revenue model that can only exist in a small block environment?

Anyone reading discussions in the Bitcoin scene these days probably has seen the following argument (or similar): "Blockstream is preventing a blocksize increase because their products can only ...
2
votes
1answer
87 views

Assuming that the block size fork goes through, will the Bitcoin developers use the alert key to tell people to upgrade?

The block size increase proposal currently under discussion would require all clients that process transactions to upgrade. Otherwise, pre 0.11 clients would reject these larger blocks, leading to a ...
2
votes
1answer
196 views

Why can't Bitcoin use a very large blocksize such as 1GB?

In the current blocksize limit debate multiple proposals have been made. Bitcoin XT implements an increase to 8MB right away plus a doubling every two years. A competing approach used 20MB. What ...
2
votes
2answers
100 views

Why is halving the best time for block size increase hard fork?

Gavin Andresen said the best time to launch the block size increase update / hard fork would be the next reward halving (when mining discovery bounty would go from 25btc to 12.5btc). Why has halving ...
2
votes
1answer
221 views

Why not multiply “six confirmations” and divide Time-Between-Blocks and Reward by the same factor?

It seems that choosing a good factor to use to expand Bitcoin's capacity is a good idea. The software would divide some of its calculated values by this factor, such as the target time between blocks ...
2
votes
1answer
79 views

Can a blocksize limit be a sustainable way to introduce scarcity?

Some people feel that it will be important in the future to introduce some scarcity into the mining market by having a block size limit. The idea is that this will force transactors to bid up ...
2
votes
2answers
713 views

Any methods or tech to reduce the size of blockchain?

Are there any techs/methods applied or going to be applied on the bitcoin network to reduce the size of blockchain. It is really a burden for peroson to run a full-node especially on vps. Or what ...
2
votes
1answer
143 views

Blocks, scaling and segwit question

Somewhat new to bitcoin, trying to understand the tech... For my understanding all the transactions go into a block, every 10 minutes the block is mined and all transactions in it are confirmed. With ...
2
votes
2answers
831 views

Block size depending on transaction count

It's widely known that Bitcoin has a limit of 1 MB per block. However, the average block size is currently about 0.6 MB: (original data) According to this thread, Bitcoin transactions has an ...
2
votes
2answers
158 views

What are Forward Blocks?

Mark Friedenbach says "Bitcoin’s Block Size Can Be Increased Without Hard Fork". Can someone ELI5 what are Forward Blocks?
2
votes
0answers
180 views

How much will Segwit increase the number of transactions that can fit in each block?

How much weight would the witness data have on the total block size? What is the culminating effect of this on the number of transactions that can fit into each block? Thanks in advance :)
2
votes
0answers
98 views

In what ways was the “Hong Kong Agreement” infringed upon?

There is a favorite talking point in some parts of the community claiming that this or that party broke the Hong Kong Agreement. Mentioned are for example: Delivery time of SegWit Delivery time of ...
2
votes
0answers
98 views

A common criticism of Segregated Witness is that it is “unnecessarily complex”. Why is it chosen over alternatives?

Segregated Witness (SegWit) is well-along the way to being implemented and deployed as a soft-fork. Facts: SegWit eliminates most forms of transaction malleability. Discounts input scripts in ...