⭐ Merited by JayJuanGee (1)
Came across an archive with all of Satoshi's posts here in the Forum and one is from Jan 2010 in response to a question asked. The thread deals with what has now become known as ordinals...
Replies 10-12 fit in quite well...
Apparently Satoshi had never read page 35 of the Standards for efficient cryptography, SEC 1: Elliptic Curve Cryptography published on 2009 on Symmetric Encryption Schemes before writing this wrong reply Replies 10-12 fit in quite well...
Unfortunately, ECDSA can only sign signatures, it can't encrypt messages, and we need the small size of ECDSA.
Post #15 (slightly modified below)
It could use a separate infrastructure to pass messages, maybe just put a hash of the message in the transaction to prove that the transaction is for the order described in the message.
I.E. Side Chain.