SHA-256 hashing
Cryptocurrencies are reliably protected against counterfeiting by means of hashing algorithm, which is impossible to reverse at present. Since the result of hashing is unpredictable, there is no algorithm for obtaining the desired result, except for random search. If the hash does not meet the condition, then the block of service information in the header changes randomly and the hash is recalculated.
Usually a lot of recalculations are required. When an option is found, the node sends the resulting block to other connected nodes that check the block. If an intruder creates a block using a modified version of the program and will write a reward for himself, this block will not be added to the chain. If there are no errors, the block is considered added to the chain and the next block must include its hash.
-------------------------------------------------------------------------------------------------- ------------------------------------------------------------------------------------------------- -------------------------------------------------------------------------------------------------- ------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- -------------------------------------------------------------------------------------------------- ------------------------------------------------------------------------------------------------- -------------------------------------------------------------------------------------------------- ------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- -------------------------------------------------------------------------------------------------- ------------------------------------------------------------------------------------------------- -------------------------------------------------------------------------------------------------- ------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- -------------------------------------------------------------------------------------------------- ------------------------------------------------------------------------------------------------- -------------------------------------------------------------------------------------------------- ------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- -------------------------------------------------------------------------------------------------- ------------------------------------------------------------------------------------------------- -------------------------------------------------------------------------------------------------- ------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
