For those wondering, Mastodon contains no “web3” or crypto technology, and significantly predates any of that. The technology deployed here is primarily ActivityPub, which has roots in tech like RSS and PubSubHubbub.
It is noteworthy that “web3” designs are absent from the Twitter emigration discussion; that’s because it’s a scam and not fit for purpose.
The minute people start talking about adding crypto to the fediverse, run. That’s not what this is about and violates its spirit and design.
@davetroy I have always felt that calling decentralisation Web3 makes perfect sense.
Web1 was ‘anyone can broadcast’.
Web2 was ‘anyone can talk back’.
Web3 is ‘anyone can host’.
Technologies such as Bittorrent and ActivityPub are then fine examples of Web3. Blockchain could be Web3 but is not required (or particularly useful).
Try to get that genie back into the bottle, though… Especially if there’s so much money behind the ‘cryptobro’ definition of Web3.
Web 2.0 was asynchronous JavaScript, the concept of web applications, the semantic web (i.e., literally ActivityPub and the other RDF things that came before it), and decentralization.
"Web3" is something a bunch of grifters created to sell people concepts which had long been standardized.
Anyone has always been able to host the web.
Dave Troy 
Leonardo Di Ottio
Ziggy the Hamster ☎️ 4ZTH