[bitcoin-dev] Proof-of-Stake Bitcoin Sidechains

[ZmnSCPxj]

Good mornint Peter,

> > > Wouldn’t a revealed private key for time locked funds create a race
> > > to spend? I imagine miners who are paying attention would have the
> > > advantage but it would still just be a race.
> >
> > If Bitcoin had implemented RBF "properly" (i.e. not have the silly
> > "opt-out" rule) then such races are won by bidding up the fees. A
>
> Note that CSV using transactions are always RBF as CSV disables the opt-out.
>

Thank you for this information.
I forgot that RBF opt-out was hacked on top of `nSequence`, and relative timelocks were also hacked on top of `nSequence`.
In particular coins locked on mainchain for the purpose of staking a sidechain (mainstake) have to be locked with an `OP_CSV`, which immediately enables this protection.

Regards,
ZmnSCPxj