Transaction not yet indexed

668n2WmGM2U8U4b6opWNkoq8Gh7DYvganibkWXix2ECJU2GbEoRuGtaF65mcfRrFocbfgZ4fwpqCWugo7yZzLdwq

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