Transaction not yet indexed

521Nffqz3iMuSVrAA3kViEpAtMKB66FEXXWDCNdk6ty1f7wKrKwxyBZHJtpPk5ekpJotfyQh79YRbnKgadKoXf2a

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