Transaction not yet indexed

668jMcEHrXuqb255VdzkVTbGk2Qavxb2AhSJkMMEUH8ArQjukdsVMT6z28Jd2XzXiWU19MeRwfg7KUTH8TEQLEHH

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