[bitcoin-dev] Increasing the blocksize as a (generalized) softfork.

[David Chan]

The UTXO sets may diverge but they actually will be strict subsets/supersets of each other as no transaction would be invalid on one fork vs another unless the hard fork lasts longer than 100 blocks. 
This is of course specific to a block limit change hard fork. 



On 2015/12/31, at 13:39, joe2015--- via bitcoin-dev <bitcoin-dev at lists.linuxfoundation.org> wrote:

>> So I'm very strongly against this "generalized softfork" idea -- I also don't
>> see how upgraded nodes and non-upgraded nodes can possibly end up with the same
>> UTXO set.
> 
> The only way for non-upgraded nodes to get the correct UTXO set is to upgrade.
> 
> It is important to keep in mind this was proposed as an alternative to a hardfork.  With a hardfork the UTXOs also diverge as upgraded and non-upgraded clients follow different chains.
> 
> --joe.
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