Doesn't a good soft fork signaling mechanism along with an activation warning system for non-upgraded nodes (i.e. BIP9, or even block version ISM for that matter) essentially fix this? I don't quite get why this should be an issue.

On December 17, 2015 10:52:39 AM PST, Jeff Garzik via bitcoin-dev <bitcoin-dev@lists.linuxfoundation.org> wrote:


On Thu, Dec 17, 2015 at 1:46 PM, jl2012 <jl2012@xbt.hk> wrote:
This is not correct.

As only about 1/3 of nodes support BIP65 now, would you consider CLTV tx are less secure than others? I don't think so. Since one invalid CLTV tx will make the whole block invalid. Having more nodes to fully validate non-CLTV txs won't make them any safer. The same logic also applies to SW softfork.


Yes - the logic applies to all soft forks.  Each soft fork degrades the security of non-upgraded nodes.

The core design of bitcoin is that trustless nodes validate the work of miners, not trust them.

Soft forks move in the opposite direction.  Each new soft-forked feature leans very heavily on miner trust rather than P2P network validation.



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