Mastodon and evidently some others (unknown which ones) support "Linked Data Signatures", however that standard has been superseded, and the suggestion now is to use "data integrity proofs". I am not clear if anyone has implemented data integrity proofs yet.
Firefish and thus Goblin currently doesn't implement either of these.
A pretty low priority item I think, but something to consider at some point perhaps.
Mastodon and evidently some others (unknown which ones) support "Linked Data Signatures", however that standard has been superseded, and the suggestion now is to use "data integrity proofs". I am not clear if anyone has implemented data integrity proofs yet.
Firefish and thus Goblin currently doesn't implement either of these.
A pretty low priority item I think, but something to consider at some point perhaps.
https://www.w3.org/wiki/SocialCG/ActivityPub/Authentication_Authorization#Data_integrity_proofs_.2F_Linked_Data_Signatures https://codeberg.org/fediverse/fep/src/branch/main/fep/8b32/fep-8b32.md
https://w3c.github.io/vc-data-integrity/