Its tough cause cost to broadcast is free on the internet.
They solve this in the RF world by licensing who gets to broadcast. The only spammers on newspapers, radio, tv, post, satellite are people with a lot of cash.
They solve this in the RF world by licensing who gets to broadcast. The only spammers on newspapers, radio, tv, post, satellite are people with a lot of cash.
ActivityPub, however, requires all POST requests to be signed by the server that sends them. The signature is made with an RSA key of the actor that performed the activity. The public key of that pair is inside the JSON object of the actor. So, to verify the signature for an incoming activity, you'd make a request back to the originating server to fetch the actor object. This makes spoofing impossible and domain bans practical.