Transaction not yet indexed

668MUPb2qheAKzLairxyR5GTZkRpSd92x458TiCEuptRhHF5MArHdUXRCcv9W4tbHtq8XPTAnk4csUNDcNUPxDyB

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