plenty on Nostr: Just put the url.

{ "id": "7e284396e8f2fa0f243c9dd9da43534beb8770a54817d911789fbacbcf1aa024", "pubkey": "402730966ed22ca2fdef6399e79bc5b5df3a07f15bfd6367f51ba3813953239e", "created_at": 1675239214, "kind": 1, "tags": [ [ "e", "21a26cbe26ee793679c0638b4029a9a44f36b276c6a24ad09b8ce902551355eb" ], [ "e", "d379f1ef12981dc06f892d31c3f93604f2e99246ed48f6dc73bab125e84d42cd" ], [ "p", "7b142c4b3d6eaac922836e6503875efe19492164e1389b9545e782ac62dd316d" ] ], "content": "Just put the url.", "sig": "3dba8342a48af2e3fa9f26d26c880be853b70d26e0dae5102cede186400ddd2e1e090b2d4965c2f2bf892a59f1f25623cf30291bb9b842de658491bbb8c28a8d" }