Blockchain

The best way to learn blockchain is by building one. This repository guides you from creating a basic blockchain to understanding advanced concepts, providing hands-on experience along the way. Dive in and start your blockchain journey today!

Simple Blockchain

docker run -p 7000:7000 propilideno/simple-blockchain

classDiagram
    direction LR

    class Blockchain {
        +Block[] Chain
        +int Difficulty
        +Transaction[] MemoryPool
        +Block mine()
        +void addTransaction(transaction Transaction)
        +bool isValid()
    }

    class Block {
        +Transaction[] Transactions
        +string PreviousHash
        +string Hash
        +time.Time Timestamp
        +int Nonce
        +string calculateHash()
        +void mine(difficulty int)
    }

    Blockchain "1" --> "*" Block : contains

    Block <|-- Block1 : PreviousHash
    Block1 <|-- Block2 : PreviousHash
    Block2 <|-- Block3 : PreviousHash
    Block3 <|-- Block4 : PreviousHash

Loading

Routes

• GET /chain
• GET /memorypool
• GET /mine
• POST /transactions/new
  • body: { "from": "Lucas", "to": "Filipe", "amount": 10 }

Lacks of

• Transaction validation
• Persistence
• Miner Reward
• Descentralization
  • P2P Network
  • Node discovery

Simple Transactional Blockchain

docker run -p 7000:7000 propilideno/simple-transactional-blockchain

classDiagram
    direction LR

    class Blockchain {
        +Block[] Chain
        +int Difficulty
        +float64 RewardPerBlock
        +float64 MaxCoins
        +float64 getMinedCoins()
        +float64 getBalance(address string)
        +bool isValid()
        +Block mine(miner string) Block
        +void addBlockData(data BlockData)
    }

    class Block {
        +BlockData[] Data
        +BlockReward Reward
        +string PreviousHash
        +string Hash
        +time.Time Timestamp
        +int Nonce
        +string calculateHash()
        +void mine(difficulty int)
    }

    Blockchain "1" --> "*" Block : contains

    Block <|-- Block1 : PreviousHash
    Block1 <|-- Block2 : PreviousHash
    Block2 <|-- Block3 : PreviousHash
    Block3 <|-- Block4 : PreviousHash

Loading

Routes

• GET /info?wallet=wallet_id
• GET /chain
• GET /memorypool
• GET /mine?wallet=wallet_id
• POST /data/new
  • body: { "from": "Lucas", "to": "Filipe", "amount": 10 }

Lacks of

• Persistence
• Descentralization
  • P2P Network
  • Node discovery

Lacks of

• Persistence
• Descentralization
  • P2P Network
  • Node discovery