Fiat sent

After the buyer sends the fiat money to the seller, the buyer should send a message in a Gift wrap Nostr event to Mostro indicating that the fiat money was sent, message in the first element of the rumor's content would look like this:

{
  "order": {
    "version": 1,
    "id": "<Order Id>",
    "action": "fiat-sent",
    "payload": null
  }
}

When the maker is the buyer on a range order

In most of the cases after complete a range order, a child order needs to be created, the client is rotating keys favoring privacy so Mostro can't know which would be the next trade pubkey of the maker, to solve this the client needs to send trade pubkey and trade index of the child order on the fiat-sent message, the message looks like this:

{
  "order": {
    "version": 1,
    "id": "<Order Id>",
    "action": "fiat-sent",
    "payload": {
      "next_trade": ["<trade pubkey>", <trade index>]
    }
  }
}

Mostro response

Mostro send messages to both parties confirming fiat-sent action and sending again the counterpart pubkey, here an example of the message to the buyer:

{
  "order": {
    "version": 1,
    "id": "<Order Id>",
    "action": "fiat-sent-ok",
    "payload": {
      "Peer": {
        "pubkey": "<Seller's trade pubkey>"
      }
    }
  }
}

And here an example of the message from Mostro to the seller:

{
  "order": {
    "version": 1,
    "id": "<Order Id>",
    "pubkey": "<Seller's trade pubkey>",
    "action": "fiat-sent-ok",
    "payload": {
      "Peer": {
        "pubkey": "<Buyer's trade pubkey>"
      }
    }
  }
}

Mostro updates the addressable event with d tag <Order Id> to change the status to fiat-sent:

[
  "EVENT",
  "RAND",
  {
    "id": "<Event id>",
    "pubkey": "<Mostro's pubkey>",
    "created_at": 1702549437,
    "kind": 38383,
    "tags": [
      ["d", "<Order Id>"],
      ["k", "sell"],
      ["f", "VES"],
      ["s", "fiat-sent"],
      ["amt", "7851"],
      ["fa", "100"],
      ["pm", "face to face"],
      ["premium", "1"],
      ["network", "mainnet"],
      ["layer", "lightning"],
      ["expiration", "1719391096"],
      ["y", "mostrop2p"],
      ["z", "order"]
    ],
    "content": "",
    "sig": "<Mostro's signature>"
  }
]