Transaction not yet indexed

668DKkemhPDUj3whE7GAjgp2gBpB6ieLP2ggXTX6tNA8LWmy6iVKbrT4tFQQ1LiZgaLPcfDLSC1SLU2NssbDwo3i

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