Transaction not yet indexed

668BsmaAAF8CXZrLsANA38gQauW6MTWuQmmHXPyTMX1GFvgPEX9uc9NWcTbGZ5bNdYbe2xCVCp3h4dpp7QRGTUeS

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