nostr:npub1eqmc8e9mhtue38wd37a9spspw8jgc6k9eecxsez0nk6hx5tmww2sj5fx0r 
これ思い出しました
◆How to implement a basic ActivityPub server - Mastodon Blog
https://blog.joinmastodon.org/2018/06/how-to-implement-a-basic-activitypub-server/