My sincere apologies, the link returns a 404 (trailing dot). The correct link 
to the BIP is 
https://github.com/ZenulAbidin/bips/blob/master/bip-notatether-signedmessage.mediawiki

-Ali

------- Original Message -------
On Thursday, August 4th, 2022 at 3:18 PM, Ali Sherief <a...@notatether.com> 
wrote:


> Hi,
>
> I have created a new BIP, called notatether-signedmessage. It can be viewed 
> at 
> https://github.com/ZenulAbidin/bips/blob/master/bip-notatether-signedmessage.mediawiki.
>
> For those who want a quick summary, it defines a step-by-step process for 
> signing and verifying messages from legacy, native/nested segwit, and taproot 
> addresses. It does not define a new signature format itself, except in the 
> case of Taproot. For those addresses, I have defined a signature format that 
> has 1 byte header/recID, 64 bytes signature, and 32 bytes x coordinate of a 
> public key. This is required to run the BIP340 Schnorr verify algorithm using 
> only the signature - and the header byte is added for backwards 
> compatibility. Otherwise, it completely integrates BIP137 signatures.
>
> I am planning to move that format to its own BIP as soon as possible, in lieu 
> that it is unacceptable to define formats in an Informational BIP.
>
> Please leave your comments in this mailing list. CC'ing BIP editors.
>
> - Ali
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