> There's the super well-known ones like Bitcoin and Ethereum of course, and also a myriad of other technologies and ecosystems: Mastodon, ActivityPub, Perkeep,

> There's the super well-known ones like Bitcoin and Ethereum of course, and also a myriad of other technologies and ecosystems: Mastodon, ActivityPub, Perkeep, Scuttlebutt, Dweb, Solid... P2P technology is at least a decade older than blockchain - it's peak was in the early 2000's with Napster & co.