Feature Request: Bitcoin Signed Message For Confirming!

Hello,

When I made a confirmation about the BTC address, only PGP signed message was asked. I feel this isn't a good idea. To prove the ownership of the address, I think it is good to ask a Bitcoin signed message. It should atleast include : Date of current day and a code. This can be posted in any of the verified networks(Github, Twitter or Reddit suggested) and verify it and put a link to the post. Else, this can be done by storing it within the system and put a link to it similar to PGP public key(https://keybase.io/kzm279/key.asc), https://keybase.io/kzm279/btc_signed_message.asc. Looking forward to suggestions/opinions.

Kindly,
Muhammed Zakir

Start with the issue description and determine how address ownership confirmation currently uses PGP-signed messages. Define whether Bitcoin signed messages should be posted to a verified network or stored by the system, then establish how the date, code, verification result, and resulting link would be represented; the unresolved alternatives mean the scope is not yet ready for implementation.

Written by the indexing model from the issue text.