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Topic: Long term Scalability of Bitcoin and the 1 MB block size limit - page 2. (Read 8994 times)

legendary
Activity: 2632
Merit: 1023
i never quite understood why you need the who block chain and not just last part that is large enough to make it hard enough not to duplicate. All unmoved coins beyond this point could just be complied into a continuous space, sort like defraging a HD.....or is that the size of the bloc chain already?
full member
Activity: 193
Merit: 100
In terms of long term space requirements spent transaction deletion and summarisation will drastically reduce this even if you are running a complete but non-archival node.  

The scalability wiki covers a lot of this.

https://en.bitcoin.it/wiki/Scalability

remember also an increasing proportion of transactions are happening off-block


sr. member
Activity: 364
Merit: 250
Biggest blocks (in bytes)

Quote
Blocks

Hash    Height    Age    Date    ฿TC    #TXN    Bytes
0⋯4319133c6c0    228,538    8 months    2013-03-29 07:38:36Z    17,022    725    998,053
0⋯8f3a4259afa    256,961    2 months    2013-09-09 16:02:21Z    5,168    3,861    905,676
0⋯a3fb6b3be6e    258,355    2 months    2013-09-16 18:47:17Z    4,595    429    901,212
0⋯f65ddaf0d60    258,365    2 months    2013-09-16 20:48:59Z    9,516    619    898,627
0⋯92007e28df0    263,240    3 weeks    2013-10-1 ...

If it hits the 1-MB limit once in a while it's no problem, the problem begins when it starts hitting it several times in a row (and thus delaying transactions more and more).
legendary
Activity: 1176
Merit: 1020
See: Average block size chart

Since implementing the "dust rule", block size has been pretty steady; I would guess we won't hit the 1MB hard limit for another two years, but that is just a guess, we could easily hit it sooner or later than that.

It would be cool to see a version of that chart multiplied by 10/average-block-interval.  If blocks were coming at a rate of one per 10 minutes, the current block size would be about 60% bigger, or about 200KB.
sr. member
Activity: 437
Merit: 255
Biggest blocks (in bytes)

Quote
Blocks

Hash    Height    Age    Date    ฿TC    #TXN    Bytes
0⋯4319133c6c0    228,538    8 months    2013-03-29 07:38:36Z    17,022    725    998,053
0⋯8f3a4259afa    256,961    2 months    2013-09-09 16:02:21Z    5,168    3,861    905,676
0⋯a3fb6b3be6e    258,355    2 months    2013-09-16 18:47:17Z    4,595    429    901,212
0⋯f65ddaf0d60    258,365    2 months    2013-09-16 20:48:59Z    9,516    619    898,627
0⋯92007e28df0    263,240    3 weeks    2013-10-1 ...
legendary
Activity: 1652
Merit: 2301
Chief Scientist
See: Average block size chart

Since implementing the "dust rule", block size has been pretty steady; I would guess we won't hit the 1MB hard limit for another two years, but that is just a guess, we could easily hit it sooner or later than that.
full member
Activity: 126
Merit: 100
May I ask if anyone can guess at what time period we may hit this limit?

If we assume the current rate of growth of Bitcoin?

An order of magnitude would be acceptable in such guess work, eg  weeks, months, years, decades.
legendary
Activity: 1652
Merit: 2301
Chief Scientist
Consensus is the block size limit will have to rise.

Us geeks were/will/are arguing over how and when, not if...
sr. member
Activity: 336
Merit: 250
This is something that came up in a speculation discussion thread I'm involved in, and I was hoping someone with better knowledge of the technical aspects of bitcoin could clear things up for me.

As I understand it, bitcoin needs to have exponentially greater number of transactions in just a few years in order to keep miners interested as the block reward continues to halve, particularly as the miner fee gets smaller in the face of a rising price of Bitcoin. However, if there is a 1mb block size hard limit, it would seem that something's got to give.

I mostly want to hand wave this away and say oh the devs will work it out, but it's probably better to just reach out and get things clarified. Is this an inevitable doomsday scenario for Bitcoin in a world where bitcoin is the universal payment option internationally representing a $20 trillion market cap?
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