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From: Nadav Kohen <nadav@suredbits.com>
Date: Thu, 27 Feb 2020 10:17:47 -0600
Message-ID: <CALGTLwMRJN1t2SzgQ6EJp=59ofOHmZ2sjite42++LCqHT6=3Mw@mail.gmail.com>
To: Bitcoin Protocol Discussion <bitcoin-dev@lists.linuxfoundation.org>
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Subject: Re: [bitcoin-dev] [Annoucement] Discreet Log Contract Protocol
	Specification
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Hi List,

We now have have some working code for executing 2-outcome Discreet Log
Contracts as well as documentation
<https://bitcoin-s.org/docs/next/applications/dlc> on how to use it, and
would love if anyone wanted to try it out!

Here's a short blog post
<https://suredbits.com/discreet-log-contract-demonstration/> with a video
demo of an execution.

And as always, we would also be thrilled if anyone interested in reviewing
or contributing took a look at our work-in-progress specification
<https://github.com/discreetlogcontracts/dlcspecs/>.

Best,
Nadav

On Tue, Jan 28, 2020 at 3:38 AM Lloyd Fournier via bitcoin-dev <
bitcoin-dev@lists.linuxfoundation.org> wrote:

> Hi Chris,
>
> This is a really exciting effort. I hope I will be able to contribute to
> it. I was wondering if you had seen the idea that DLCs can be done in onl=
y
> two transaction using Schnorr[1]. I also think this can be done in Bitcoi=
n
> as it is today using ECDSA adaptor signatures [2]. In my mind, the adapto=
r
> signature protocol is both easier to specify and implement on top of bein=
g
> cheaper and more private.
>
> LL
>
> [1] https://lists.launchpad.net/mimblewimble/msg00485.html
> [2]
> https://lists.linuxfoundation.org/pipermail/lightning-dev/2019-November/0=
02316.html
>
> On Tue, Jan 14, 2020 at 2:12 AM Chris Stewart via bitcoin-dev <
> bitcoin-dev@lists.linuxfoundation.org> wrote:
>
>> Hi all,
>>
>> Suredbits and Crypto Garage have begun to work on a specification for
>> using discreet log contracts <https://adiabat.github.io/dlc.pdf> in a
>> safe, private and interoperable way. We are writing to the mailing list =
to
>> inform and solicit feedback for the protocol specification so that we ca=
n
>> -- as a community -- agree on a common standard to use Bitcoin oracles.
>>
>> Our goal is to end up with a set of documents like the BIPs (Bitcoin
>> Improvement Proposals) and BOLTs (Basis of Lightning Technology) so that
>> others that wish to use the technology can easily write software to
>> integrate into the protocol.
>>
>> A secondary goal of ours is to remain compatible with standards used by
>> other bitcoin related protocols (like Lightning) so that every future
>> bitcoin related protocol can reach for a =E2=80=9Ctoolbox=E2=80=9D of ag=
reed standards for
>> things like funding transactions and closing transactions. We want to av=
oid
>> reinventing the wheel where possible and allow for library developers to
>> re-use software to hook into many bitcoin related protocols.
>>
>> You can find the specification repository here:
>>
>> https://github.com/discreetlogcontracts/dlcspecs/
>>
>> For more information on DLCs:
>>
>> [1] - https://adiabat.github.io/dlc.pdf
>>
>> [2] - https://cryptogarage.co.jp/p2pd/
>>
>> [3] -
>> https://suredbits.com/discreet-log-contracts-part-1-what-is-a-discreet-l=
og-contract/
>>
>> [4] -
>> https://blockstream.com/2019/04/19/en-transacting-bitcoin-based-p2p-deri=
vatives/
>>
>> [5] - https://dci.mit.edu/smart-contracts
>>
>> -Chris
>> _______________________________________________
>> bitcoin-dev mailing list
>> bitcoin-dev@lists.linuxfoundation.org
>> https://lists.linuxfoundation.org/mailman/listinfo/bitcoin-dev
>>
> _______________________________________________
> bitcoin-dev mailing list
> bitcoin-dev@lists.linuxfoundation.org
> https://lists.linuxfoundation.org/mailman/listinfo/bitcoin-dev
>

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<div dir=3D"ltr">Hi List,<div><br></div><div>We now have have some working =
code for executing 2-outcome Discreet Log Contracts as well as=C2=A0<a href=
=3D"https://bitcoin-s.org/docs/next/applications/dlc">documentation</a> on =
how to use it, and would love if anyone wanted to try it out!</div><div><br=
></div><div>Here&#39;s a short <a href=3D"https://suredbits.com/discreet-lo=
g-contract-demonstration/">blog post</a> with a video demo of an execution.=
</div><div><br></div><div>And as always, we would also be thrilled if anyon=
e interested in reviewing or contributing took a look at our work-in-progre=
ss <a href=3D"https://github.com/discreetlogcontracts/dlcspecs/">specificat=
ion</a>.</div><div><br></div><div>Best,</div><div>Nadav</div></div><br><div=
 class=3D"gmail_quote"><div dir=3D"ltr" class=3D"gmail_attr">On Tue, Jan 28=
, 2020 at 3:38 AM Lloyd Fournier via bitcoin-dev &lt;<a href=3D"mailto:bitc=
oin-dev@lists.linuxfoundation.org">bitcoin-dev@lists.linuxfoundation.org</a=
>&gt; wrote:<br></div><blockquote class=3D"gmail_quote" style=3D"margin:0px=
 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><di=
v dir=3D"ltr">Hi Chris,=C2=A0<div><br></div><div>This is a really exciting =
effort. I hope I will be able to contribute to it. I was wondering if you h=
ad seen the idea that DLCs can be done in only two transaction using Schnor=
r[1]. I also think this can be done in Bitcoin as it is today using ECDSA a=
daptor signatures [2]. In my mind, the adaptor signature protocol is both e=
asier to specify=C2=A0and implement on top of being cheaper and more privat=
e.</div><div><br></div><div>LL</div><div><br></div><div>[1]=C2=A0<a href=3D=
"https://lists.launchpad.net/mimblewimble/msg00485.html" target=3D"_blank">=
https://lists.launchpad.net/mimblewimble/msg00485.html</a></div><div>[2]=C2=
=A0<a href=3D"https://lists.linuxfoundation.org/pipermail/lightning-dev/201=
9-November/002316.html" target=3D"_blank">https://lists.linuxfoundation.org=
/pipermail/lightning-dev/2019-November/002316.html</a></div></div><br><div =
class=3D"gmail_quote"><div dir=3D"ltr" class=3D"gmail_attr">On Tue, Jan 14,=
 2020 at 2:12 AM Chris Stewart via bitcoin-dev &lt;<a href=3D"mailto:bitcoi=
n-dev@lists.linuxfoundation.org" target=3D"_blank">bitcoin-dev@lists.linuxf=
oundation.org</a>&gt; wrote:<br></div><blockquote class=3D"gmail_quote" sty=
le=3D"margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);paddi=
ng-left:1ex"><div dir=3D"ltr"><p dir=3D"ltr" style=3D"line-height:1.38;marg=
in-top:0pt;margin-bottom:0pt" id=3D"gmail-m_7711793517946650737gmail-m_4305=
887128563629483gmail-docs-internal-guid-40bcde10-7fff-29d2-384e-0252cfe7ab3=
3"><span style=3D"font-size:11pt;font-family:Arial;color:rgb(0,0,0);backgro=
und-color:transparent;font-weight:400;font-style:normal;font-variant:normal=
;text-decoration:none;vertical-align:baseline;white-space:pre-wrap">Hi all,=
</span></p><br><p dir=3D"ltr" style=3D"line-height:1.38;margin-top:0pt;marg=
in-bottom:0pt"><span style=3D"font-size:11pt;font-family:Arial;color:rgb(0,=
0,0);background-color:transparent;font-weight:400;font-style:normal;font-va=
riant:normal;text-decoration:none;vertical-align:baseline;white-space:pre-w=
rap">Suredbits and Crypto Garage have begun to work on a specification for =
using </span><a href=3D"https://adiabat.github.io/dlc.pdf" style=3D"text-de=
coration:none" target=3D"_blank"><span style=3D"font-size:11pt;font-family:=
Arial;color:rgb(17,85,204);background-color:transparent;font-weight:400;fon=
t-style:normal;font-variant:normal;text-decoration:underline;vertical-align=
:baseline;white-space:pre-wrap">discreet log contracts</span></a><span styl=
e=3D"font-size:11pt;font-family:Arial;color:rgb(0,0,0);background-color:tra=
nsparent;font-weight:400;font-style:normal;font-variant:normal;text-decorat=
ion:none;vertical-align:baseline;white-space:pre-wrap"> in a safe, private =
and interoperable way. We are writing to the mailing list to inform and sol=
icit feedback for the protocol specification so that we can -- as a communi=
ty -- agree on a common standard to use Bitcoin oracles.=C2=A0</span></p><b=
r><p dir=3D"ltr" style=3D"line-height:1.38;margin-top:0pt;margin-bottom:0pt=
"><span style=3D"font-size:11pt;font-family:Arial;color:rgb(0,0,0);backgrou=
nd-color:transparent;font-weight:400;font-style:normal;font-variant:normal;=
text-decoration:none;vertical-align:baseline;white-space:pre-wrap">Our goal=
 is to end up with a set of documents like the BIPs (Bitcoin Improvement Pr=
oposals) and BOLTs (Basis of Lightning Technology) so that others that wish=
 to use the technology can easily write software to integrate into the prot=
ocol.</span></p><br><p dir=3D"ltr" style=3D"line-height:1.38;margin-top:0pt=
;margin-bottom:0pt"><span style=3D"font-size:11pt;font-family:Arial;color:r=
gb(0,0,0);background-color:transparent;font-weight:400;font-style:normal;fo=
nt-variant:normal;text-decoration:none;vertical-align:baseline;white-space:=
pre-wrap">A secondary goal of ours is to remain compatible with standards u=
sed by other bitcoin related protocols (like Lightning) so that every futur=
e bitcoin related protocol can reach for a =E2=80=9Ctoolbox=E2=80=9D of agr=
eed standards for things like funding transactions and closing transactions=
. We want to avoid reinventing the wheel where possible and allow for libra=
ry developers to re-use software to hook into many bitcoin related protocol=
s.=C2=A0</span></p><br><p dir=3D"ltr" style=3D"line-height:1.38;margin-top:=
0pt;margin-bottom:0pt"><span style=3D"font-size:11pt;font-family:Arial;colo=
r:rgb(0,0,0);background-color:transparent;font-weight:400;font-style:normal=
;font-variant:normal;text-decoration:none;vertical-align:baseline;white-spa=
ce:pre-wrap">You can find the specification repository here:=C2=A0</span></=
p><br><p dir=3D"ltr" style=3D"line-height:1.38;margin-top:0pt;margin-bottom=
:0pt"><a href=3D"https://github.com/discreetlogcontracts/dlcspecs/" style=
=3D"text-decoration:none" target=3D"_blank"><span style=3D"font-size:11pt;f=
ont-family:Arial;color:rgb(17,85,204);background-color:transparent;font-wei=
ght:400;font-style:normal;font-variant:normal;text-decoration:underline;ver=
tical-align:baseline;white-space:pre-wrap">https://github.com/discreetlogco=
ntracts/dlcspecs/</span></a></p><br><p dir=3D"ltr" style=3D"line-height:1.3=
8;margin-top:0pt;margin-bottom:0pt"><span style=3D"font-size:11pt;font-fami=
ly:Arial;color:rgb(0,0,0);background-color:transparent;font-weight:400;font=
-style:normal;font-variant:normal;text-decoration:none;vertical-align:basel=
ine;white-space:pre-wrap">For more information on DLCs:=C2=A0</span></p><br=
><p dir=3D"ltr" style=3D"line-height:1.38;margin-top:0pt;margin-bottom:0pt"=
><span style=3D"font-size:11pt;font-family:Arial;color:rgb(0,0,0);backgroun=
d-color:transparent;font-weight:400;font-style:normal;font-variant:normal;t=
ext-decoration:none;vertical-align:baseline;white-space:pre-wrap">[1] - </s=
pan><a href=3D"https://adiabat.github.io/dlc.pdf" style=3D"text-decoration:=
none" target=3D"_blank"><span style=3D"font-size:11pt;font-family:Arial;col=
or:rgb(17,85,204);background-color:transparent;font-weight:400;font-style:n=
ormal;font-variant:normal;text-decoration:underline;vertical-align:baseline=
;white-space:pre-wrap">https://adiabat.github.io/dlc.pdf</span></a><span st=
yle=3D"font-size:11pt;font-family:Arial;color:rgb(0,0,0);background-color:t=
ransparent;font-weight:400;font-style:normal;font-variant:normal;text-decor=
ation:none;vertical-align:baseline;white-space:pre-wrap">=C2=A0</span></p><=
p dir=3D"ltr" style=3D"line-height:1.38;margin-top:0pt;margin-bottom:0pt"><=
span style=3D"font-size:11pt;font-family:Arial;color:rgb(0,0,0);background-=
color:transparent;font-weight:400;font-style:normal;font-variant:normal;tex=
t-decoration:none;vertical-align:baseline;white-space:pre-wrap">[2] - <a hr=
ef=3D"https://cryptogarage.co.jp/p2pd/" target=3D"_blank">https://cryptogar=
age.co.jp/p2pd/</a></span></p><p dir=3D"ltr" style=3D"line-height:1.38;marg=
in-top:0pt;margin-bottom:0pt"><span style=3D"font-size:11pt;font-family:Ari=
al;color:rgb(0,0,0);background-color:transparent;font-weight:400;font-style=
:normal;font-variant:normal;text-decoration:none;vertical-align:baseline;wh=
ite-space:pre-wrap">[3] - </span><a href=3D"https://suredbits.com/discreet-=
log-contracts-part-1-what-is-a-discreet-log-contract/" style=3D"text-decora=
tion:none" target=3D"_blank"><span style=3D"font-size:11pt;font-family:Aria=
l;color:rgb(17,85,204);background-color:transparent;font-weight:400;font-st=
yle:normal;font-variant:normal;text-decoration:underline;vertical-align:bas=
eline;white-space:pre-wrap">https://suredbits.com/discreet-log-contracts-pa=
rt-1-what-is-a-discreet-log-contract/</span></a></p><p dir=3D"ltr" style=3D=
"line-height:1.38;margin-top:0pt;margin-bottom:0pt"><span style=3D"font-siz=
e:11pt;font-family:Arial;color:rgb(0,0,0);background-color:transparent;font=
-weight:400;font-style:normal;font-variant:normal;text-decoration:none;vert=
ical-align:baseline;white-space:pre-wrap">[4] - </span><a href=3D"https://b=
lockstream.com/2019/04/19/en-transacting-bitcoin-based-p2p-derivatives/" st=
yle=3D"text-decoration:none" target=3D"_blank"><span style=3D"font-size:11p=
t;font-family:Arial;color:rgb(17,85,204);background-color:transparent;font-=
weight:400;font-style:normal;font-variant:normal;text-decoration:underline;=
vertical-align:baseline;white-space:pre-wrap">https://blockstream.com/2019/=
04/19/en-transacting-bitcoin-based-p2p-derivatives/</span></a></p><p dir=3D=
"ltr" style=3D"line-height:1.38;margin-top:0pt;margin-bottom:0pt"><span sty=
le=3D"font-size:11pt;font-family:Arial;color:rgb(0,0,0);background-color:tr=
ansparent;font-weight:400;font-style:normal;font-variant:normal;text-decora=
tion:none;vertical-align:baseline;white-space:pre-wrap">[5] - </span><a hre=
f=3D"https://dci.mit.edu/smart-contracts" style=3D"text-decoration:none" ta=
rget=3D"_blank"><span style=3D"font-size:11pt;font-family:Arial;color:rgb(1=
7,85,204);background-color:transparent;font-weight:400;font-style:normal;fo=
nt-variant:normal;text-decoration:underline;vertical-align:baseline;white-s=
pace:pre-wrap">https://dci.mit.edu/smart-contracts</span></a></p><br><p dir=
=3D"ltr" style=3D"line-height:1.38;margin-top:0pt;margin-bottom:0pt"><span =
style=3D"font-size:11pt;font-family:Arial;color:rgb(0,0,0);background-color=
:transparent;font-weight:400;font-style:normal;font-variant:normal;text-dec=
oration:none;vertical-align:baseline;white-space:pre-wrap">-Chris <br></spa=
n></p></div>
_______________________________________________<br>
bitcoin-dev mailing list<br>
<a href=3D"mailto:bitcoin-dev@lists.linuxfoundation.org" target=3D"_blank">=
bitcoin-dev@lists.linuxfoundation.org</a><br>
<a href=3D"https://lists.linuxfoundation.org/mailman/listinfo/bitcoin-dev" =
rel=3D"noreferrer" target=3D"_blank">https://lists.linuxfoundation.org/mail=
man/listinfo/bitcoin-dev</a><br>
</blockquote></div>
_______________________________________________<br>
bitcoin-dev mailing list<br>
<a href=3D"mailto:bitcoin-dev@lists.linuxfoundation.org" target=3D"_blank">=
bitcoin-dev@lists.linuxfoundation.org</a><br>
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rel=3D"noreferrer" target=3D"_blank">https://lists.linuxfoundation.org/mail=
man/listinfo/bitcoin-dev</a><br>
</blockquote></div>

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