LedPaint on Nostr: what is cashu??

{ "id": "347fea9172eb6d4e9753cd61928f3058e40f610dd8b7d122881b75d2052e88ec", "pubkey": "d654bfc84ff9b9118adf2c09d2afec7d3e6d5e4656a55ddc1c2ed32a718ed158", "created_at": 1758106334, "kind": 1, "tags": [ [ "e", "2e2ae5610332eda70fe14f4fb24cf49b3b490602235a9ca4a35d1584766d17e4", "", "root" ], [ "p", "cec0f44d0d64d6d9d7a1c84c330f5467e752cc8b065f720e874a0bed1c5416d2" ], [ "r", "wss://relay.primal.net/" ] ], "content": "what is cashu??", "sig": "ed1821ddfd81a2363ac402d7bac0f5034da6d77e0ad8099127aff4b92a7d70c7e7d4e3201723a991461481a89e3b55c3593d6537a82cadf68ad674093df28b91" }