KingArctan on Nostr: Proof of work?

{ "id": "5ca205c64ab70b0fdc5e5db5648fedd929617b42bcbd05fab6d395f62a89affc", "pubkey": "15973e4d0b61e82a711df3b37fda2e84059e065f1a1b666a8a9ce1fe6fbe6786", "created_at": 1712696990, "kind": 1, "tags": [ [ "r", "https://image.nostr.build/08f9fb2dbc43fc1f99daac3bd7a2202733fbf9914862da45a02ec579d252e6cf.jpg" ], [ "imeta", "url https://image.nostr.build/08f9fb2dbc43fc1f99daac3bd7a2202733fbf9914862da45a02ec579d252e6cf.jpg", "m image/jpeg", "alt Verifiable file url", "x f5fff19d9d7041cbbb61d74b03818e999d007c1719288e468bc066d47bb72cf9", "size 163445", "dim 768x1020", "blurhash _9FFdC^J~Wt8WEM{s.^,DOaLxaxaxYt6-piv4nIVIURPoIgO%K?aRjWVRjM{K6NFxuWUt7s,xu.SNG-:ofIVoef6?uWBoJxuofRjWBog%2RPt7M{M|Rjxbn$RPn%s:oJs:", "ox 08f9fb2dbc43fc1f99daac3bd7a2202733fbf9914862da45a02ec579d252e6cf" ] ], "content": "Proof of work? https://image.nostr.build/08f9fb2dbc43fc1f99daac3bd7a2202733fbf9914862da45a02ec579d252e6cf.jpg", "sig": "60b7e4d95207e84ca60f7b537b6764f759c92fac49c0aeb1e2ae9b7575710b3db51c6d783427cb0230781a10e9d430b6831168add674e6b40c311d8c8e9481e4" }