Coming across a few pallets like Authorship, one finds a frequent mention of Uncles or UncleGenerations. What are uncles?

1 Answer 1


Each block, besides the genesis has a parent block. Let's assume you are building block X, the parent is X - 1. This means that all forks (blocks on with the same block number as X - 1) of X - 1 are the uncles of X.

  • Are forks from X - 2 uncles of X as well?
    – Bruno
    Commented Feb 15, 2022 at 17:58
  • 1
    AB / A1 B1 C1 | | | A --> B --> C --> D | A2 The uncles of D, with a maximum "generation" of 3 would be C1, B1, A1, A2.
    – bkchr
    Commented Feb 15, 2022 at 20:07

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