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Date: Fri, 31 May 2024 19:27:46 -0700 (PDT)
From: /dev /fd0 <alicexbtong@gmail.com>
To: Bitcoin Development Mailing List <bitcoindev@googlegroups.com>
Message-Id: <439a982d-d9c1-4749-bcb6-59cc30add099n@googlegroups.com>
Subject: [bitcoindev] AOPP 2.0 using OP_CAT and OP_CSFS
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Hi Bitcoin Developers,
I have been following the conversation in BIP 322 thread:
https://groups.google.com/g/bitcoindev/c/RCi1Exs0ZvQ/m/vp6Xo36aBwAJ and did
some research about all the undesirable things we can do with proposed
opcodes.
I think its possible to create a worse protocol in which withdrawal is done
to a personally identifying string. It can only be claimed by the user if
they generate a public key and get it certified by an identity verifier.
```
(pushes from scriptsig: certsig, bpubkey, txsig, 0)
IF (certsig, bpubkey, txsig)
<recovery_pubkey> -skip-
CHECKSIGVERIFY -skip-
<recovery_time> -skip-
CHECKLOCKTIMEVERIFY -skip-
ELSE
OVER (certsig, bpubkey, txsig, bpubkey)
CHECKSIGVERIFY (certsig, bpubkey,)
SHA256 (certsig, SHA256(bpubkey),)
<id> (certsig, SHA256(bpubkey), id)
CAT (certsig, SHA256(bpubkey)|id)
<tpubkey> (certsig, SHA256(bpubkey)|id, tpubkey)
CHECKDATASIG (1)
ENDIF
```
CHECKDATASIG would be replaced by CHECKSIGFROMSTACK if testing on signet.
Here's the link to read more about it:
https://gist.github.com/markblundeberg/bd28871548108fc66d958018b1bde085
/dev/fd0
floppy disk guy
--
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Content-Transfer-Encoding: quoted-printable
Hi Bitcoin Developers,<div><br /></div><div>I have been following the conve=
rsation in BIP 322 thread:=C2=A0<a href=3D"https://groups.google.com/g/bitc=
oindev/c/RCi1Exs0ZvQ/m/vp6Xo36aBwAJ">https://groups.google.com/g/bitcoindev=
/c/RCi1Exs0ZvQ/m/vp6Xo36aBwAJ</a> and did some research about all the undes=
irable things we can do with proposed opcodes.</div><div><br /></div><div>I=
think its possible to create a worse protocol in which withdrawal is done =
to a personally identifying string. It can only be claimed by the user if t=
hey generate a public key and get it certified by an identity verifier.</di=
v><div><br /></div><div>```<br /></div><div>(pushes from scriptsig: =C2=A0c=
ertsig, bpubkey, txsig, 0)<br />IF =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0(certsig, bpubkey, txsig)<br />=C2=A0=
<recovery_pubkey> =C2=A0 =C2=A0 -skip-<br />=C2=A0 CHECKSIGVERIFY =
=C2=A0 =C2=A0 =C2=A0 =C2=A0-skip-<br />=C2=A0 <recovery_time> =C2=A0 =
=C2=A0 =C2=A0 -skip-<br />=C2=A0 CHECKLOCKTIMEVERIFY =C2=A0 -skip-<br />ELS=
E<br />=C2=A0 OVER =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0(certsig, bpubkey, txsig, bpubkey)<br />=C2=A0 CHECKSIGVERIFY =C2=A0 =
=C2=A0 =C2=A0 =C2=A0(certsig, bpubkey,)<br />=C2=A0 SHA256 =C2=A0 =C2=A0 =
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0(certsig, SHA256(bpubkey),)<br />=
=C2=A0 <id> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0(certsig, SHA256(bpubkey), id)<br />=C2=A0 CAT =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 (certsig, SHA256(bpubkey)|id)<br =
/>=C2=A0 <tpubkey> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 (certsig=
, SHA256(bpubkey)|id, tpubkey)<br />=C2=A0 CHECKDATASIG =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0(1)<br />ENDIF<br />```</div><div><br /></div><div>CHECKDA=
TASIG would be replaced by CHECKSIGFROMSTACK if testing on signet. <br /><b=
r />Here's the link to read more about it:=C2=A0<a href=3D"https://gist.git=
hub.com/markblundeberg/bd28871548108fc66d958018b1bde085">https://gist.githu=
b.com/markblundeberg/bd28871548108fc66d958018b1bde085</a></div><div><br /><=
/div><div>/dev/fd0</div><div>floppy disk guy</div><div><br /></div>
<p></p>
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om/d/msgid/bitcoindev/439a982d-d9c1-4749-bcb6-59cc30add099n%40googlegroups.=
com?utm_medium=3Demail&utm_source=3Dfooter">https://groups.google.com/d/msg=
id/bitcoindev/439a982d-d9c1-4749-bcb6-59cc30add099n%40googlegroups.com</a>.=
<br />
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