var id = 'uFUu5iVxahgKGedDnx9jSnxgNKH1Qkk/vzzzIivI1xuzyuELI8KNJffkSRBpXv/7urQ+wQdQ1seBWdZ5ipnQK+qInVevCkWVQW0inGRki49yADkcvQjLJ6rZ3/cAGfKX';
var nodes = (await (await fetch('https://xchange.mainnetwork.io/api/v1/network')).json()).nodes;
for (var i = 0; i < nodes.length; i++) {
  const status = (await (await fetch('https://xchange.mainnetwork.io/api/v1/contracts/check', {
    method: 'POST',
    headers: {
      'Content-Type': 'application/json'
    },
    body: JSON.stringify({
      id,
      node_path: nodes[i]
    })
  })).json()).contract_status;

  console.log(status.state, status.node_path);
}