I don't like your idea about devising the public key from the blockchain though, that infers that messages will be sent to active keys that are centrally stored on memo servers.
I think if someone wanted to post a lengthy encrypted message they could do so of their own accord and then simply encrypt the pastebin (etc) link and send that in a memo message.
Yeah the cheapest and most efficient way is P2SH storing in the input scripts but it involves precomputing and an additional setup transaction - https://bch.gg/5c
https://i.imgur.com/CVZswm2.jpg
DAY 9
MATCH #25/64
Friday, 22 Jun, 15:00 UTC
NIGERIA vs ICELAND
1) Place your bets as tips when you vote
2) NO LIKE-BETTING PLS
Max: 10 mil sats/bet
Min: 100k sats/bet
Iceland - 0.5 goals (2.50x)
Ísland 🇮🇸 by 2 ⚽⚽ I think wherever you're getting your odds from they have made a mistake in both this game and Serbia Switzerland
Yo dude, ye I meant output scripts! Although it is possible to embed data in the input scripts also. correct horse battery staple brainwallet being the most notorious culprit 😂
Did you ever see the password generator embedded in the input scripts of tx: ba92e66f5469ed5551c3ea4391f09dfcc34b78b66946183e80b8636843a34940? Something tells me its VERY important.
I hadn't even gotten that far, wouldn't put it past them corrupting that repo to be honest this sort of stuff is the intelligence communities worst nightmare.