curl --request GET \
  --url https://test.deribit.com/api/v2/public/status \
  --header 'Content-Type: application/json' \
  --data '
{
  "jsonrpc": "2.0",
  "id": 55,
  "method": "public/status",
  "params": {}
}
'

{
  "jsonrpc": "2.0",
  "id": 55,
  "result": {
    "locked_currencies": [
      "BTC",
      "ETH"
    ],
    "locked": true
  }
}