This is completely wrong. SPV wallets will work as normal without upgrade. Full
nodes will only provide transactions to SPV in a format they understand, and
SPV will accept the transaction since they are not doing any validation anyway.
The only reason an end user may want to upgrade is for lower transaction fee
when they are sending transaction. If they don't upgrade, that means the fee is
too low for them to care, which is a good news
---- On Mon, 17 Oct 2016 00:42:26 +0800 Tom Zander via bitcoin-dev
<firstname.lastname@example.org> wrote ----
> On Sunday, 16 October 2016 12:35:58 CEST Gavin Andresen wrote:
> > On Sun, Oct 16, 2016 at 10:58 AM, Tom Zander via bitcoin-dev <
> > email@example.com> wrote:
> > > The fallow period sounds waaaay to short. I suggest 2 months at minimum
> > > since anyone that wants to be safe needs to upgrade.
> > I asked a lot of businesses and individuals how long it would take them to
> > upgrade to a new release over the last year or two.
> > Nobody said it would take them more than two weeks.
> The question you asked them was likely about the block size. The main
> difference is that SPV users do not need to update after BIP109, but they do
> need to have a new wallet when SegWit transactions are being sent to them.
> This upgrade affects also end users, not just businesses etc.
> Personally, I'd say that 2 months is even too fast.
> Tom Zander
> Blog: https://zander.github.io
> Vlog: https://vimeo.com/channels/tomscryptochannel
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