This project is an implementation for blockchain concept in Java.

• The blocks are generated by multiple miners concurrently, that keep trying to find valid blocks.
• Blocks should have the hash of the previous block in the chain.
• Block's hash should start with a number of zeros controlled by the blockchain. The blockchain increases or decreases the number of zeroes based on the time needed for the miners to mine a valid block (should not be too easy nor hard for miners to mine blocks)
• Miners finding valid blocks are awarded with an amount of virtual currency

The app is using many Java concepts. Most importantly:

• Multithreading
• Thread Sync
• Executors
• Collections
• Streams
• RegEx
• Records
• Hashing