Module difficulty 

Get context and calculate difficulty for the next block.

Functions

adjust_difficulty_and_time_for_testnet 🔒

Adjust the difficulty and time for the testnet minimum difficulty rule.

best_relevant_chain_and_history_tree 🔒

Do a consistency check by checking the finalized tip before and after all other database queries.

difficulty_time_and_history_tree 🔒

Returns the GetBlockTemplateChainInfo for the supplied relevant_data, tip, network, history_tree, and captured local time now, or an error if no valid timestamp is available.

get_block_template_chain_info

Returns the GetBlockTemplateChainInfo for the current best chain.

solution_rate

Accepts a non_finalized_state, ZebraDb, num_blocks, and a block hash to start at.