curl --request GET \
  --url https://api.timelockdata.com/api/v1/merkle/proof/{txid}

{
  "status": "<string>",
  "txId": "<string>",
  "merkleRoot": "<string>",
  "leafIndex": 123,
  "proof": [
    {
      "hash": "<string>",
      "position": "left"
    }
  ],
  "error": "<string>"
}