uncles

uncles is a list of uncle blocks referenced by this block. Each item in uncles is of type UncleBlock, which contains the uncle’s header and proposals, but no transactions.

Structure of UncleBlock

Name	Type	Description
header	Header	The block header of the uncle block. See header for more.
proposals	[H80]	A list of short transaction IDs proposed by this uncle block. See proposals for more.