v0.3

Added

• Serialization of blocks and transactions to JSON files, using jsoncpp
• Command line arguments to retrieve blockchain information
• Parallelization of the mining process using OpenMP
• Integration of Merkle Tree implementation from libbitcoin-system

v0.2

Added

• Algorithm that builds & returns a root of the Merkle Tree
• Several miners to mine every individual block
• Validation of the transactions
• Serialization of the mined blocks to the text files

v0.1

Implement simple blockchain.