Yes, that are mastodon posts. They should be able to read and also reply to your comment.
https://gitlab.com/soapbox-pub/mostr#mostr
Sefiro
npub19a…v63vp
2023-07-03 14:47:45 UTC
in reply to nevent1q…f6q5
Author Public Key
npub19a6x8frkkn2660fw0flz74a7qg8c2jxk5v9p2rsh7tv5e6ftsq3sav63vpSeen on
wss://nos.lolPublished at
2023-07-03 14:47:45 UTCEvent JSON
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