Marks on Nostr: Coinbase?

{ "id": "038b7cf92036c159c5628664db1a4009f6541a8152696d4eb66437d6c85860f6", "pubkey": "8ea485266b2285463b13bf835907161c22bb3da1e652b443db14f9cee6720a43", "created_at": 1731651589, "kind": 1, "tags": [ [ "e", "34c91ae3ce5489e448c0cf3355fd42e161f3884c826f896f9d4d137368ce5606", "", "root" ], [ "p", "d4338b7c3306491cfdf54914d1a52b80a965685f7361311eae5f3eaff1d23a5b" ] ], "content": "Coinbase?", "sig": "ea425c139071074e9f19a4710ac537a1190532388959e9ed2008a5c72b3a59d05d673a68834a1740ea147a32915e4d1e16fdc3dcf075ff2e219f2d4b282bf60f" }