On Sat, Apr 1, 2017 at 3:15 PM, Natanael <natanael.l@gmail.com> wrote:
>
>
> Den 1 apr. 2017 14:33 skrev "Jorge Timón via bitcoin-dev"
> <bitcoin-dev@lists.linuxfoundation.org>:
>
> Segwit replaces the 1 mb size limit with a weight limit of 4 mb.
>
>
> That would make it a hardfork, not a softfork, if done exactly as you say.
>
> Segwit only separates out signature data. The 1 MB limit remains, but would
> now only cover the contents of the transaction scripts. With segwit that
> means we have two (2) size limits, not one. This is important to remember.
> Even with segwit + MAST for large complex scripts, there's still going to be
> a very low limit to the total number of possible transactions per block. And
> not all transactions will get the same space savings.

No, because of the way the weight is calculated, it is impossible to
create a block that old nodes would perceive as bigger than 1 mb
without also violating the weight limit.
After segwit activation, nodes supporting segwit don't need to
validate the 1 mb size limit anymore as long as they validate the
weight limit.