Module challenge 

Structs

BlockDoubleSign

Double signed block.

Challenge

ChunkProofs

Invalid chunk (body of the chunk doesn’t match proofs or invalid encoding).

ChunkState

Doesn’t match post-{state root, outgoing receipts, gas used, etc} results after applying previous chunk.

SlashedValidator

Enums

ChallengeBody

MaybeEncodedShardChunk

Either EncodedShardChunk or ShardChunk. Used for ChunkProofs. Decoded is used to avoid re-encoding an already decoded chunk to construct a challenge. Encoded is still needed in case a challenge challenges an invalid encoded chunk that can’t be decoded.

PartialState

TODO (#8984): consider supporting format containing trie values only for state part boundaries and storing state items for state part range.

Type Aliases

Challenges

ChallengesResult

Result of checking challenge, contains which accounts to slash. If challenge is invalid this is sender, otherwise author of chunk (and possibly other participants that signed invalid blocks).

TrieValue

Serialized TrieNodeWithSize or state value.