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Bitcoin => Bitcoin Discussion => Topic started by: Prem.Soorajpaul on August 27, 2017, 06:38:08 PM



Title: Block Size of 1,068 KB. Can someone explain this?
Post by: Prem.Soorajpaul on August 27, 2017, 06:38:08 PM
I was checking the latest blocks in blockchain.info, and I stumbled upon Block #482244. It is having a size of 1067.918 kB. How is this possible? The 2 MB block size limit was to be activated in November, right?

https://blockchain.info/block/000000000000000000fdb1e5ee1a55c9b918c915772e52c2c7bd25464db87b99


Title: Re: Block Size of 1,068 KB. Can someone explain this?
Post by: perico2 on August 27, 2017, 06:46:25 PM
I was checking the latest blocks in blockchain.info, and I stumbled upon Block #482244. It is having a size of 1067.918 kB. How is this possible? The 2 MB block size limit was to be activated in November, right?

https://blockchain.info/block/000000000000000000fdb1e5ee1a55c9b918c915772e52c2c7bd25464db87b99

This means that the block contains some SEGWIT transactions, as I have understood we could see blocks of 4 MB if all transactions were SEGWIT.


Title: Re: Block Size of 1,068 KB. Can someone explain this?
Post by: HeroC on August 27, 2017, 06:51:24 PM
There is no longer a hard limit on actual block size, it is now calculated on the contents of the transactions to be close to 1MB. I saw the algorithm on here somewhere, I'll see if I can find it again. But yes, it has to do with the activation of SegWit.


Title: Re: Block Size of 1,068 KB. Can someone explain this?
Post by: Xavofat on August 27, 2017, 07:53:53 PM
You should read this article (https://medium.com/@jimmysong/understanding-segwit-block-size-fd901b87c9d4) explaining how block size now works after SegWit activation.

As people begin sending SegWit transactions, we should start seeing block sizes larger than 1MB more often.  However, because of how SegWit handles witness data, legacy nodes will still see the block size limit as being 1MB, hence why SegWit has been implemented as a soft fork.


Title: Re: Block Size of 1,068 KB. Can someone explain this?
Post by: Foxpup on August 29, 2017, 02:32:32 AM
SegWit (which was recently activated) increased the block size limit to 4MB. There was never a proposal to increase it to 2MB in November; "SegWit2x" is a proposal to increase the limit to 8MB. Everyone who said otherwise was lying.