Transaction not yet indexed

521bvuyAVDS8aWPKuD48Xe8iGYLkFZ1JrPnDLLGDu45uZcJLE18FyKoE9CUGcbhreDuxULfxE4SKHqMaMoDrcvEZ

The transaction signature is valid but not yet indexed by this RPC node, or the transaction failed before inclusion.