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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1answer
31 views

How much bandwidth needed for bitcoin bigger blocks

If the Bitcoin blockchain would support 2000 transactions per second, how big would the blocks need to be (with segwit at 100% lets say), and most importantly, how much bandwidth would be necessary ...
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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,...
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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 ...
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What are Forward Blocks?

Mark Friedenbach says "Bitcoin’s Block Size Can Be Increased Without Hard Fork". Can someone ELI5 what are Forward Blocks?
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Block Size Hurdle

Given that Bitcoin has a 1 MB block size limit (approx. 2k transactions processed every 10 minutes), would I be correct in saying that as soon as the world will start using Bitcoin more frequently to ...
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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?
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Creating lage blocks with multiple transactions in regtest mode?

I want to create blocks with multiple transactions in regtest mode. I want to test propagation with blocks of size 1-2 MB on the dash network. ./dash-cli -regtest -daemon -debug -port=8330 -rpcport=...
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2answers
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Bitcoin.org developer reference outdated?

i just can't understand if bitcoin.org developer reference is outdated or not. for example here (https://bitcoin.org/en/developer-reference#raw-transaction-format) we can see: "As of Bitcoin Core 0.9....
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117 views

Can we drive the bitcoin transaction fee arbitrarily close to zero by keep increasing the block size limit?

Can the bitcoin scalability problem be solved in the long run by increasing the block size limit (either dynamically or statically)?
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2answers
749 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 ...
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2answers
130 views

How can low latency and high scalability be achieved with increased block size in BTC?

One of the solution to address low latency and high scalability in BTC is to increase block size. A single block takes 10 min on average for proof-of-work. Increased block will also take same time for ...
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1answer
725 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 ...
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3answers
347 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 ...
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6answers
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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 ...
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1answer
110 views

Does Bitcoin Cash validate the fears about larger block sizes?

I read on this forum that a larger block size wouldn't necessarily mean less blocks since blocks are mined every ten minutes, and this is why block size should remain smaller -- Wouldn't a full ...
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1answer
479 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 ...
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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?
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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 ...
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1answer
127 views

Blockchain sizes, and external devices

This question is rather technical. Blockchains tend to grow. Specially well-known blockchains like Bitcoin. I would like to store a certain blockchain on an external device (e.g. 1TB disk space), but ...
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3answers
640 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 ...
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1answer
468 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?
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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 ...
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1answer
56 views

Is there a way to predict somehow the required storage for a specific blockchain?

I'd like to store a blockchain or two in my computer. Blockchains are pretty heavy (I took over 3hs to download GameCredits blockchain, and is one of the smallest blockchains, I guess). My main fear ...
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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 ...
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1answer
305 views

Why is the block size limited to 2mb? [duplicate]

bitcoin is experiencing mass gross. Even some local businesses around me are starting to accept bitcoin payments. Of coarse, with new growth availability problems arise; and one is the slow and high ...
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1answer
103 views

Will 2mb blocksize mean double as many transactions?

If the blocksize is increase to 2MB will that mean twice as many transactions? Basically how much of the space is used on the standard variables found in the block?
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Bitcoin Vs Bank

Bitcoins are viewed as an alternative to traditional banking. There isn't a peer to peer passage of bitcoins. Like the banking agency is a mediator between the two people sending and receiving money; ...
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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 :)
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1answer
144 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 ...
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3answers
246 views

Why would I trust a cryptocurrency that allow only 3 transactions/s?

I noticed that the recent blocks usually includes about 2k transactions with is almost the upper limit (max. 1 MB per block). From this I can see that bitcoin would never allow more than 2000 / 10 * ...
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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 ...
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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?
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1answer
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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 ...
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0answers
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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 ...
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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 ...
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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 ...
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1answer
898 views

Why OP_RETURN should be used instead of raw data?

I've read this great Explanation of what an OP_RETURN transaction looks like and now I have only one question. Imagine that someone want to store some data in Bitcoin's blockchain. Why should he use ...
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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 ...
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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 ...
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1answer
580 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 ...
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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?
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1answer
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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 ...
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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 ...
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1answer
788 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 ...
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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 ...
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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 ...
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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)...
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1answer
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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 ...
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397 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 ...
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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 ...