verification

type VerifiableChunkData struct {
	IsSystemChunk bool                  // indicates whether this is a system chunk
	Chunk         *flow.Chunk           // the chunk to be verified
	Header        *flow.Header          // BlockHeader that contains this chunk
	Result        *flow.ExecutionResult // execution result of this block
	Collection    *flow.Collection      // collection corresponding to the chunk
	ChunkDataPack *flow.ChunkDataPack   // chunk data package needed to verify this chunk
	EndState      flow.StateCommitment  // state commitment at the end of this chunk
}