From: Dustin Dettmer <dustinpaystaxes@gmail.com>
To: Bitcoin Protocol Discussion
<bitcoin-dev@lists.linuxfoundation.org>,
ZmnSCPxj <ZmnSCPxj@protonmail.com>
Subject: Re: [bitcoin-dev] Proof-of-Stake Bitcoin Sidechains
Date: Tue, 22 Jan 2019 08:33:23 -0800 [thread overview]
Message-ID: <CABLeJxRmdccf2tVZ4MsdsEj6H9+NnOpp+AeMLZwYh-zTMkWJXw@mail.gmail.com> (raw)
In-Reply-To: <wTXHV7W_AXHz5xdhXJVJr2OdSpEOaFh0PBQubFdZv4JyF6SlImszj2QyF9G-_Dem06A3iBWLF3vdgiHC_NlsVqy7DFX5XTphajNnMqiU6r0=@protonmail.com>
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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.
Would be nice to have the funds destroyed or sent somewhere specific. Like
if somehow the revealed key was actually itself a presigned transaction. Or
perhaps a 32 byte piece of a tx needed to complete it.
On Tue, Jan 22, 2019 at 6:14 AM ZmnSCPxj via bitcoin-dev <
bitcoin-dev@lists.linuxfoundation.org> wrote:
> Good Morning Matt,
>
> > ### ZmnSCPxj,
> >
> > I'm intrigued by this mechanism of using fixed R values to prevent
> multiple signatures, but how do we derive the R values in a way where they
> are
> unique for each blockheight but still can be used to create signatures or
> verify?
>
> One possibility is to derive `R` using standard hierarchical derivation.
> Then require that the staking pubkey be revealed to the sidechain network
> as actually being `staking_pubkey = P + hash(P || parent_R) * G` (possibly
> with some trivial protection against Taproot).
> To sign for a blockheight `h`, you must use your public key `P` and the
> specific `R` we get from hierarchical derivation from `parent_R` and the
> blockheight as index.
>
>
>
> Regards,
> ZmnSCPxj
> _______________________________________________
> bitcoin-dev mailing list
> bitcoin-dev@lists.linuxfoundation.org
> https://lists.linuxfoundation.org/mailman/listinfo/bitcoin-dev
>
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next prev parent reply other threads:[~2019-01-22 16:33 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-01-18 22:59 [bitcoin-dev] Proof-of-Stake Bitcoin Sidechains Matt Bell
2019-01-19 1:42 ` ZmnSCPxj
2019-01-19 5:35 ` Matt Bell
2019-01-20 2:06 ` ZmnSCPxj
2019-01-21 18:47 ` Matt Bell
2019-01-22 9:19 ` ZmnSCPxj
2019-01-22 14:58 ` Satoshin
2019-01-22 20:03 ` Dustin Dettmer
2019-01-22 16:33 ` Dustin Dettmer [this message]
2019-01-24 10:03 ` ZmnSCPxj
2019-01-24 18:46 ` Matt Bell
2019-01-25 0:16 ` Peter Todd
2019-01-25 5:33 ` ZmnSCPxj
2019-01-22 20:22 ` Dr Adam Back
2019-02-01 9:19 ` ZmnSCPxj
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