Date: Fri, 25 Jan 2019 05:33:37 +0000
To: Peter Todd <pete@petertodd.org>
From: ZmnSCPxj <ZmnSCPxj@protonmail.com>
Reply-To: ZmnSCPxj <ZmnSCPxj@protonmail.com>
Message-ID: <Bug73hgjU4TRIBFN5mQOLITGwsT5nHcr4J4ssOL2qXcLVh-GHClWYNm6UK-snj9uJFrVrcW2OQWZ94DhzukauNp-L1jk53p0J6WbekbKvpQ=@protonmail.com>
In-Reply-To: <23C4B29C-0A0C-4680-BF99-3A86C215BE34@petertodd.org>
References: <CACV3+OU1ynRuR2SioW+O+CAp5M7ZQA6af_hEY5JZCVrXpqjtKQ@mail.gmail.com>
	<BTyUDt_7oOQmFj_V61w2eUJ7rfi-eOuNphy5nN0xNAhY4sUHnR2-0U9m-ZEKip4YjFi2-hGBtucvFv7nCTVo3aBxZ94VQCa1Kx2pP_zgdxU=@protonmail.com>
	<CACV3+OWjszx6istHo7yaNxiS22kyhHQhcPxGT3QLDx3KPUMU6g@mail.gmail.com>
	<nq9NDv6z-EJuJ9jGMWdlIZbpVM6Rm8QyuWL3nRYtXWF90I-cErA_WS1ib28kt950bZYyfF1_eP153aDjhUy523wYSM9TVaeHqeZdp3xJpsk=@protonmail.com>
	<CACV3+OXQsUsgquJWZ9o8tTtak=axnbsdiNgLzF-j6yz1dDv4bA@mail.gmail.com>
	<wTXHV7W_AXHz5xdhXJVJr2OdSpEOaFh0PBQubFdZv4JyF6SlImszj2QyF9G-_Dem06A3iBWLF3vdgiHC_NlsVqy7DFX5XTphajNnMqiU6r0=@protonmail.com>
	<CABLeJxRmdccf2tVZ4MsdsEj6H9+NnOpp+AeMLZwYh-zTMkWJXw@mail.gmail.com>
	<8u0ExA_vvhRGzmFmxUoyqk6IBrnUEtEHAEMKzqLWLxC6IgBtvZR24jZBgeMeJlsPcjJKYgVar_rC388ZNjP09ZUkukfP1KRcL9NMDkrVrQM=@protonmail.com>
	<23C4B29C-0A0C-4680-BF99-3A86C215BE34@petertodd.org>
Feedback-ID: el4j0RWPRERue64lIQeq9Y2FP-mdB86tFqjmrJyEPR9VAtMovPEo9tvgA0CrTsSHJeeyPXqnoAu6DN-R04uJUg==:Ext:ProtonMail
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: quoted-printable
Cc: Bitcoin Protocol Discussion <bitcoin-dev@lists.linuxfoundation.org>
Subject: Re: [bitcoin-dev] Proof-of-Stake Bitcoin Sidechains
Precedence: list


Good mornint Peter,

> > > Wouldn=E2=80=99t 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-o=
ut.
>

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

Regards,
ZmnSCPxj