CPPChain

A demo of an elementary form of blockchain in C++, built from scratch.

Features

1. For Users:

• User account creation
• Proof-of-Elapsed Time (PoET) algorithm implementation for users
• Smart Contract Capability

2. For Miners:

• Miner account creation
• Proof-of-Work (PoW) algorithm implementation for Miners
• Self-adjusting mining incentivizer (with respect to blocks mined) to prevent concentration of computation power

3. Voting system for ledger copies with each user.

User Creation

User creation is pretty simple. You initialize a new User() object with a token balance.

Proof-of-Elapsed Time algorithm implementation

The proof-of-elapsed time algorithm can be customized as you wish.
For simplicity, I kept it as a sleep timer of random duration within the range 10 +- 20s.

Smart Contract Capability

You can create simple smart contracts by extending the Contract() class, and initialize instances of the same.

NOTE: You MUST keep 2 boolean functions:

• transit(), and
• validate() in your Smart Contract class definition. Else the smart contract won't work.